/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf -i ../../../trunk/examples/concurrent/bpl/mcr/example_9.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.25-abd8500 [2020-01-16 18:59:11,235 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-01-16 18:59:11,237 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-01-16 18:59:11,253 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-01-16 18:59:11,253 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-01-16 18:59:11,255 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-01-16 18:59:11,257 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-01-16 18:59:11,267 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-01-16 18:59:11,270 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-01-16 18:59:11,273 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-01-16 18:59:11,274 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-01-16 18:59:11,276 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-01-16 18:59:11,276 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-01-16 18:59:11,278 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-01-16 18:59:11,280 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-01-16 18:59:11,282 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-01-16 18:59:11,283 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-01-16 18:59:11,285 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-01-16 18:59:11,286 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-01-16 18:59:11,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-01-16 18:59:11,295 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-01-16 18:59:11,299 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-01-16 18:59:11,300 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-01-16 18:59:11,301 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-01-16 18:59:11,303 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-01-16 18:59:11,312 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-01-16 18:59:11,313 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-01-16 18:59:11,314 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-01-16 18:59:11,315 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf [2020-01-16 18:59:11,340 INFO L113 SettingsManager]: Loading preferences was successful [2020-01-16 18:59:11,340 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-01-16 18:59:11,342 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-01-16 18:59:11,344 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-01-16 18:59:11,344 INFO L138 SettingsManager]: * Use SBE=true [2020-01-16 18:59:11,344 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-01-16 18:59:11,344 INFO L138 SettingsManager]: * sizeof long=4 [2020-01-16 18:59:11,345 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-01-16 18:59:11,345 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-01-16 18:59:11,345 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-01-16 18:59:11,345 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-01-16 18:59:11,345 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-01-16 18:59:11,346 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-01-16 18:59:11,346 INFO L138 SettingsManager]: * sizeof long double=12 [2020-01-16 18:59:11,347 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-01-16 18:59:11,347 INFO L138 SettingsManager]: * Use constant arrays=true [2020-01-16 18:59:11,347 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-01-16 18:59:11,347 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-01-16 18:59:11,347 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-01-16 18:59:11,348 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-01-16 18:59:11,348 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-01-16 18:59:11,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-01-16 18:59:11,348 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-01-16 18:59:11,348 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-01-16 18:59:11,349 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-01-16 18:59:11,349 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-01-16 18:59:11,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-01-16 18:59:11,350 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-01-16 18:59:11,350 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-01-16 18:59:11,350 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-01-16 18:59:11,627 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-01-16 18:59:11,645 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-01-16 18:59:11,649 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-01-16 18:59:11,650 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2020-01-16 18:59:11,651 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2020-01-16 18:59:11,652 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_9.bpl [2020-01-16 18:59:11,654 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_9.bpl' [2020-01-16 18:59:11,690 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-01-16 18:59:11,691 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-01-16 18:59:11,692 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-01-16 18:59:11,692 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-01-16 18:59:11,692 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-01-16 18:59:11,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:59:11" (1/1) ... [2020-01-16 18:59:11,719 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:59:11" (1/1) ... [2020-01-16 18:59:11,728 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-01-16 18:59:11,729 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-01-16 18:59:11,729 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-01-16 18:59:11,729 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-01-16 18:59:11,740 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:59:11" (1/1) ... [2020-01-16 18:59:11,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:59:11" (1/1) ... [2020-01-16 18:59:11,741 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:59:11" (1/1) ... [2020-01-16 18:59:11,741 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:59:11" (1/1) ... [2020-01-16 18:59:11,747 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:59:11" (1/1) ... [2020-01-16 18:59:11,749 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:59:11" (1/1) ... [2020-01-16 18:59:11,750 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:59:11" (1/1) ... [2020-01-16 18:59:11,752 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-01-16 18:59:11,752 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-01-16 18:59:11,752 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-01-16 18:59:11,752 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-01-16 18:59:11,753 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:59:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-01-16 18:59:11,824 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2020-01-16 18:59:11,824 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2020-01-16 18:59:11,826 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2020-01-16 18:59:11,826 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2020-01-16 18:59:11,826 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2020-01-16 18:59:11,826 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2020-01-16 18:59:11,827 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2020-01-16 18:59:11,827 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2020-01-16 18:59:11,827 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2020-01-16 18:59:11,827 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2020-01-16 18:59:11,827 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2020-01-16 18:59:11,828 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2020-01-16 18:59:11,828 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2020-01-16 18:59:11,828 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2020-01-16 18:59:11,828 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2020-01-16 18:59:11,828 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2020-01-16 18:59:11,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-01-16 18:59:11,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-01-16 18:59:11,829 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2020-01-16 18:59:11,829 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2020-01-16 18:59:11,829 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2020-01-16 18:59:11,829 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2020-01-16 18:59:11,830 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2020-01-16 18:59:11,830 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2020-01-16 18:59:11,831 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2020-01-16 18:59:11,838 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2020-01-16 18:59:11,838 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2020-01-16 18:59:11,839 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_8 given in one single declaration [2020-01-16 18:59:11,839 INFO L130 BoogieDeclarations]: Found specification of procedure set_8 [2020-01-16 18:59:11,840 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8 [2020-01-16 18:59:11,841 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-01-16 18:59:12,068 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-01-16 18:59:12,069 INFO L287 CfgBuilder]: Removed 0 assume(true) statements. [2020-01-16 18:59:12,071 INFO L202 PluginConnector]: Adding new model example_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.01 06:59:12 BoogieIcfgContainer [2020-01-16 18:59:12,071 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-01-16 18:59:12,079 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-01-16 18:59:12,079 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-01-16 18:59:12,085 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-01-16 18:59:12,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:59:11" (1/2) ... [2020-01-16 18:59:12,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2942aa and model type example_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.01 06:59:12, skipping insertion in model container [2020-01-16 18:59:12,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.01 06:59:12" (2/2) ... [2020-01-16 18:59:12,089 INFO L109 eAbstractionObserver]: Analyzing ICFG example_9.bpl [2020-01-16 18:59:12,101 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-01-16 18:59:12,102 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-01-16 18:59:12,109 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-01-16 18:59:12,110 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-01-16 18:59:12,345 INFO L250 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-01-16 18:59:12,366 INFO L374 AbstractCegarLoop]: Interprodecural is true [2020-01-16 18:59:12,367 INFO L375 AbstractCegarLoop]: Hoare is true [2020-01-16 18:59:12,367 INFO L376 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-01-16 18:59:12,367 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-01-16 18:59:12,367 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-01-16 18:59:12,367 INFO L379 AbstractCegarLoop]: Difference is false [2020-01-16 18:59:12,368 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-01-16 18:59:12,368 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-01-16 18:59:12,385 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 120 transitions [2020-01-16 18:59:12,386 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 76 places, 120 transitions [2020-01-16 18:59:13,417 INFO L129 PetriNetUnfolder]: 1793/2334 cut-off events. [2020-01-16 18:59:13,418 INFO L130 PetriNetUnfolder]: For 2304/2304 co-relation queries the response was YES. [2020-01-16 18:59:13,469 INFO L76 FinitePrefix]: Finished finitePrefix Result has 4666 conditions, 2334 events. 1793/2334 cut-off events. For 2304/2304 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8911 event pairs. 0/2333 useless extension candidates. Maximal degree in co-relation 2090. Up to 630 conditions per place. [2020-01-16 18:59:13,539 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 76 places, 120 transitions [2020-01-16 18:59:14,392 INFO L129 PetriNetUnfolder]: 1793/2334 cut-off events. [2020-01-16 18:59:14,392 INFO L130 PetriNetUnfolder]: For 2304/2304 co-relation queries the response was YES. [2020-01-16 18:59:14,420 INFO L76 FinitePrefix]: Finished finitePrefix Result has 4666 conditions, 2334 events. 1793/2334 cut-off events. For 2304/2304 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8911 event pairs. 0/2333 useless extension candidates. Maximal degree in co-relation 2090. Up to 630 conditions per place. [2020-01-16 18:59:14,474 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2736 [2020-01-16 18:59:14,476 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-01-16 18:59:14,689 INFO L206 etLargeBlockEncoding]: Checked pairs total: 756 [2020-01-16 18:59:14,690 INFO L214 etLargeBlockEncoding]: Total number of compositions: 10 [2020-01-16 18:59:14,700 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 65 places, 110 transitions [2020-01-16 18:59:17,515 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 20196 states. [2020-01-16 18:59:17,517 INFO L276 IsEmpty]: Start isEmpty. Operand 20196 states. [2020-01-16 18:59:17,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:59:17,673 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:59:17,674 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:59:17,675 INFO L426 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:59:17,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:59:17,682 INFO L82 PathProgramCache]: Analyzing trace with hash 114387570, now seen corresponding path program 1 times [2020-01-16 18:59:17,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:59:17,694 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869205991] [2020-01-16 18:59:17,695 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:59:17,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:59:17,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:59:17,876 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869205991] [2020-01-16 18:59:17,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:59:17,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 18:59:17,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678493543] [2020-01-16 18:59:17,883 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 18:59:17,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:59:17,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 18:59:17,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 18:59:17,901 INFO L87 Difference]: Start difference. First operand 20196 states. Second operand 3 states. [2020-01-16 18:59:18,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:59:18,404 INFO L93 Difference]: Finished difference Result 18916 states and 109908 transitions. [2020-01-16 18:59:18,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 18:59:18,406 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-01-16 18:59:18,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:59:18,626 INFO L225 Difference]: With dead ends: 18916 [2020-01-16 18:59:18,626 INFO L226 Difference]: Without dead ends: 18915 [2020-01-16 18:59:18,629 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 18:59:19,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18915 states. [2020-01-16 18:59:20,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18915 to 18915. [2020-01-16 18:59:20,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18915 states. [2020-01-16 18:59:20,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18915 states to 18915 states and 109907 transitions. [2020-01-16 18:59:20,776 INFO L78 Accepts]: Start accepts. Automaton has 18915 states and 109907 transitions. Word has length 28 [2020-01-16 18:59:20,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:59:20,777 INFO L478 AbstractCegarLoop]: Abstraction has 18915 states and 109907 transitions. [2020-01-16 18:59:20,777 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 18:59:20,778 INFO L276 IsEmpty]: Start isEmpty. Operand 18915 states and 109907 transitions. [2020-01-16 18:59:20,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:59:20,889 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:59:20,889 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:59:20,890 INFO L426 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:59:20,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:59:20,890 INFO L82 PathProgramCache]: Analyzing trace with hash -520253774, now seen corresponding path program 1 times [2020-01-16 18:59:20,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:59:20,891 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694259547] [2020-01-16 18:59:20,891 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:59:20,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:59:20,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:59:20,925 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694259547] [2020-01-16 18:59:20,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:59:20,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 18:59:20,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222333599] [2020-01-16 18:59:20,927 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 18:59:20,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:59:20,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 18:59:20,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 18:59:20,928 INFO L87 Difference]: Start difference. First operand 18915 states and 109907 transitions. Second operand 3 states. [2020-01-16 18:59:21,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:59:21,131 INFO L93 Difference]: Finished difference Result 15971 states and 88467 transitions. [2020-01-16 18:59:21,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 18:59:21,132 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-01-16 18:59:21,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:59:21,227 INFO L225 Difference]: With dead ends: 15971 [2020-01-16 18:59:21,227 INFO L226 Difference]: Without dead ends: 15971 [2020-01-16 18:59:21,228 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 18:59:21,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15971 states. [2020-01-16 18:59:23,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15971 to 15971. [2020-01-16 18:59:23,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15971 states. [2020-01-16 18:59:23,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15971 states to 15971 states and 88467 transitions. [2020-01-16 18:59:23,321 INFO L78 Accepts]: Start accepts. Automaton has 15971 states and 88467 transitions. Word has length 28 [2020-01-16 18:59:23,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:59:23,322 INFO L478 AbstractCegarLoop]: Abstraction has 15971 states and 88467 transitions. [2020-01-16 18:59:23,322 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 18:59:23,322 INFO L276 IsEmpty]: Start isEmpty. Operand 15971 states and 88467 transitions. [2020-01-16 18:59:23,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:59:23,371 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:59:23,371 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:59:23,372 INFO L426 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:59:23,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:59:23,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1967135382, now seen corresponding path program 1 times [2020-01-16 18:59:23,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:59:23,373 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157699055] [2020-01-16 18:59:23,373 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:59:23,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:59:23,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:59:23,412 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157699055] [2020-01-16 18:59:23,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:59:23,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 18:59:23,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491475050] [2020-01-16 18:59:23,413 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 18:59:23,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:59:23,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 18:59:23,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 18:59:23,414 INFO L87 Difference]: Start difference. First operand 15971 states and 88467 transitions. Second operand 3 states. [2020-01-16 18:59:23,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:59:23,510 INFO L93 Difference]: Finished difference Result 10243 states and 54163 transitions. [2020-01-16 18:59:23,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 18:59:23,511 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-01-16 18:59:23,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:59:23,549 INFO L225 Difference]: With dead ends: 10243 [2020-01-16 18:59:23,549 INFO L226 Difference]: Without dead ends: 10243 [2020-01-16 18:59:23,549 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 18:59:23,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10243 states. [2020-01-16 18:59:23,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10243 to 10243. [2020-01-16 18:59:23,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10243 states. [2020-01-16 18:59:24,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10243 states to 10243 states and 54163 transitions. [2020-01-16 18:59:24,288 INFO L78 Accepts]: Start accepts. Automaton has 10243 states and 54163 transitions. Word has length 28 [2020-01-16 18:59:24,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:59:24,288 INFO L478 AbstractCegarLoop]: Abstraction has 10243 states and 54163 transitions. [2020-01-16 18:59:24,289 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 18:59:24,289 INFO L276 IsEmpty]: Start isEmpty. Operand 10243 states and 54163 transitions. [2020-01-16 18:59:24,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:59:24,323 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:59:24,323 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:59:24,323 INFO L426 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:59:24,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:59:24,325 INFO L82 PathProgramCache]: Analyzing trace with hash 2067096892, now seen corresponding path program 1 times [2020-01-16 18:59:24,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:59:24,326 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618588639] [2020-01-16 18:59:24,326 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:59:24,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:59:24,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:59:24,385 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618588639] [2020-01-16 18:59:24,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:59:24,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 18:59:24,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150371773] [2020-01-16 18:59:24,386 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 18:59:24,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:59:24,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 18:59:24,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 18:59:24,387 INFO L87 Difference]: Start difference. First operand 10243 states and 54163 transitions. Second operand 3 states. [2020-01-16 18:59:24,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:59:24,474 INFO L93 Difference]: Finished difference Result 9987 states and 52243 transitions. [2020-01-16 18:59:24,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 18:59:24,477 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-01-16 18:59:24,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:59:24,513 INFO L225 Difference]: With dead ends: 9987 [2020-01-16 18:59:24,513 INFO L226 Difference]: Without dead ends: 9987 [2020-01-16 18:59:24,514 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 18:59:24,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9987 states. [2020-01-16 18:59:24,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9987 to 9987. [2020-01-16 18:59:24,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9987 states. [2020-01-16 18:59:25,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9987 states to 9987 states and 52243 transitions. [2020-01-16 18:59:25,026 INFO L78 Accepts]: Start accepts. Automaton has 9987 states and 52243 transitions. Word has length 28 [2020-01-16 18:59:25,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:59:25,027 INFO L478 AbstractCegarLoop]: Abstraction has 9987 states and 52243 transitions. [2020-01-16 18:59:25,027 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 18:59:25,027 INFO L276 IsEmpty]: Start isEmpty. Operand 9987 states and 52243 transitions. [2020-01-16 18:59:25,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:59:25,052 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:59:25,052 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:59:25,053 INFO L426 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:59:25,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:59:25,053 INFO L82 PathProgramCache]: Analyzing trace with hash -77951046, now seen corresponding path program 1 times [2020-01-16 18:59:25,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:59:25,054 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925824142] [2020-01-16 18:59:25,054 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:59:25,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:59:25,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:59:25,108 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925824142] [2020-01-16 18:59:25,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:59:25,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 18:59:25,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801733404] [2020-01-16 18:59:25,109 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 18:59:25,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:59:25,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 18:59:25,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 18:59:25,110 INFO L87 Difference]: Start difference. First operand 9987 states and 52243 transitions. Second operand 3 states. [2020-01-16 18:59:25,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:59:25,166 INFO L93 Difference]: Finished difference Result 6171 states and 30927 transitions. [2020-01-16 18:59:25,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 18:59:25,167 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-01-16 18:59:25,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:59:25,186 INFO L225 Difference]: With dead ends: 6171 [2020-01-16 18:59:25,186 INFO L226 Difference]: Without dead ends: 6171 [2020-01-16 18:59:25,186 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 18:59:25,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6171 states. [2020-01-16 18:59:25,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6171 to 6171. [2020-01-16 18:59:25,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6171 states. [2020-01-16 18:59:25,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6171 states to 6171 states and 30927 transitions. [2020-01-16 18:59:25,473 INFO L78 Accepts]: Start accepts. Automaton has 6171 states and 30927 transitions. Word has length 28 [2020-01-16 18:59:25,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:59:25,476 INFO L478 AbstractCegarLoop]: Abstraction has 6171 states and 30927 transitions. [2020-01-16 18:59:25,476 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 18:59:25,476 INFO L276 IsEmpty]: Start isEmpty. Operand 6171 states and 30927 transitions. [2020-01-16 18:59:25,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:59:25,495 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:59:25,495 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:59:25,495 INFO L426 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:59:25,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:59:25,496 INFO L82 PathProgramCache]: Analyzing trace with hash -1337464426, now seen corresponding path program 1 times [2020-01-16 18:59:25,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:59:25,496 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787698503] [2020-01-16 18:59:25,497 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:59:25,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:59:25,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:59:25,558 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787698503] [2020-01-16 18:59:25,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:59:25,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 18:59:25,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618625912] [2020-01-16 18:59:25,560 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 18:59:25,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:59:25,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 18:59:25,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 18:59:25,562 INFO L87 Difference]: Start difference. First operand 6171 states and 30927 transitions. Second operand 3 states. [2020-01-16 18:59:25,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:59:25,617 INFO L93 Difference]: Finished difference Result 3883 states and 18511 transitions. [2020-01-16 18:59:25,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 18:59:25,618 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-01-16 18:59:25,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:59:25,635 INFO L225 Difference]: With dead ends: 3883 [2020-01-16 18:59:25,636 INFO L226 Difference]: Without dead ends: 3883 [2020-01-16 18:59:25,645 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 18:59:25,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3883 states. [2020-01-16 18:59:26,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3883 to 3883. [2020-01-16 18:59:26,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3883 states. [2020-01-16 18:59:26,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3883 states to 3883 states and 18511 transitions. [2020-01-16 18:59:26,342 INFO L78 Accepts]: Start accepts. Automaton has 3883 states and 18511 transitions. Word has length 28 [2020-01-16 18:59:26,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:59:26,345 INFO L478 AbstractCegarLoop]: Abstraction has 3883 states and 18511 transitions. [2020-01-16 18:59:26,345 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 18:59:26,345 INFO L276 IsEmpty]: Start isEmpty. Operand 3883 states and 18511 transitions. [2020-01-16 18:59:26,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:59:26,354 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:59:26,354 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:59:26,354 INFO L426 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:59:26,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:59:26,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1461842622, now seen corresponding path program 1 times [2020-01-16 18:59:26,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:59:26,356 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531457194] [2020-01-16 18:59:26,356 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:59:26,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:59:26,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:59:26,405 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531457194] [2020-01-16 18:59:26,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:59:26,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 18:59:26,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159022975] [2020-01-16 18:59:26,406 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 18:59:26,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:59:26,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 18:59:26,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 18:59:26,407 INFO L87 Difference]: Start difference. First operand 3883 states and 18511 transitions. Second operand 3 states. [2020-01-16 18:59:26,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:59:26,434 INFO L93 Difference]: Finished difference Result 2539 states and 11503 transitions. [2020-01-16 18:59:26,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 18:59:26,435 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-01-16 18:59:26,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:59:26,442 INFO L225 Difference]: With dead ends: 2539 [2020-01-16 18:59:26,442 INFO L226 Difference]: Without dead ends: 2539 [2020-01-16 18:59:26,443 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 18:59:26,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2539 states. [2020-01-16 18:59:26,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2539 to 2539. [2020-01-16 18:59:26,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2539 states. [2020-01-16 18:59:26,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2539 states to 2539 states and 11503 transitions. [2020-01-16 18:59:26,535 INFO L78 Accepts]: Start accepts. Automaton has 2539 states and 11503 transitions. Word has length 28 [2020-01-16 18:59:26,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:59:26,536 INFO L478 AbstractCegarLoop]: Abstraction has 2539 states and 11503 transitions. [2020-01-16 18:59:26,536 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 18:59:26,536 INFO L276 IsEmpty]: Start isEmpty. Operand 2539 states and 11503 transitions. [2020-01-16 18:59:26,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:59:26,541 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:59:26,541 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:59:26,542 INFO L426 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:59:26,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:59:26,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1283995022, now seen corresponding path program 1 times [2020-01-16 18:59:26,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:59:26,543 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503023629] [2020-01-16 18:59:26,543 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:59:26,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:59:26,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:59:26,579 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503023629] [2020-01-16 18:59:26,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:59:26,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 18:59:26,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766954815] [2020-01-16 18:59:26,580 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 18:59:26,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:59:26,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 18:59:26,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 18:59:26,581 INFO L87 Difference]: Start difference. First operand 2539 states and 11503 transitions. Second operand 3 states. [2020-01-16 18:59:26,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:59:26,599 INFO L93 Difference]: Finished difference Result 1535 states and 6913 transitions. [2020-01-16 18:59:26,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 18:59:26,600 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-01-16 18:59:26,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:59:26,604 INFO L225 Difference]: With dead ends: 1535 [2020-01-16 18:59:26,604 INFO L226 Difference]: Without dead ends: 1535 [2020-01-16 18:59:26,605 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 18:59:26,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1535 states. [2020-01-16 18:59:26,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1535 to 1535. [2020-01-16 18:59:26,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1535 states. [2020-01-16 18:59:26,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1535 states to 1535 states and 6913 transitions. [2020-01-16 18:59:26,670 INFO L78 Accepts]: Start accepts. Automaton has 1535 states and 6913 transitions. Word has length 28 [2020-01-16 18:59:26,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:59:26,671 INFO L478 AbstractCegarLoop]: Abstraction has 1535 states and 6913 transitions. [2020-01-16 18:59:26,671 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 18:59:26,671 INFO L276 IsEmpty]: Start isEmpty. Operand 1535 states and 6913 transitions. [2020-01-16 18:59:26,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:59:26,674 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:59:26,674 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:59:26,675 INFO L426 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:59:26,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:59:26,675 INFO L82 PathProgramCache]: Analyzing trace with hash 662697718, now seen corresponding path program 1 times [2020-01-16 18:59:26,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:59:26,676 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282092910] [2020-01-16 18:59:26,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:59:26,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:59:27,380 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:59:27,510 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-01-16 18:59:27,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:59:27,521 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282092910] [2020-01-16 18:59:27,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:59:27,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:59:27,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706820219] [2020-01-16 18:59:27,522 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:59:27,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:59:27,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:59:27,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:59:27,523 INFO L87 Difference]: Start difference. First operand 1535 states and 6913 transitions. Second operand 11 states. [2020-01-16 18:59:27,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:59:27,765 INFO L93 Difference]: Finished difference Result 3001 states and 11928 transitions. [2020-01-16 18:59:27,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:59:27,766 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:59:27,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:59:27,774 INFO L225 Difference]: With dead ends: 3001 [2020-01-16 18:59:27,774 INFO L226 Difference]: Without dead ends: 2986 [2020-01-16 18:59:27,774 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:59:27,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2986 states. [2020-01-16 18:59:27,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2986 to 1583. [2020-01-16 18:59:27,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:59:27,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7118 transitions. [2020-01-16 18:59:27,884 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7118 transitions. Word has length 28 [2020-01-16 18:59:27,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:59:27,885 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7118 transitions. [2020-01-16 18:59:27,885 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:59:27,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7118 transitions. [2020-01-16 18:59:27,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:59:27,889 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:59:27,889 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:59:27,889 INFO L426 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:59:27,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:59:27,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1407400216, now seen corresponding path program 2 times [2020-01-16 18:59:27,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:59:27,890 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085431545] [2020-01-16 18:59:27,890 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:59:27,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:59:28,571 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:59:28,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:59:28,580 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085431545] [2020-01-16 18:59:28,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:59:28,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:59:28,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828916272] [2020-01-16 18:59:28,581 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:59:28,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:59:28,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:59:28,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:59:28,582 INFO L87 Difference]: Start difference. First operand 1583 states and 7118 transitions. Second operand 11 states. [2020-01-16 18:59:28,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:59:28,894 INFO L93 Difference]: Finished difference Result 3002 states and 11925 transitions. [2020-01-16 18:59:28,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:59:28,895 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:59:28,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:59:28,902 INFO L225 Difference]: With dead ends: 3002 [2020-01-16 18:59:28,902 INFO L226 Difference]: Without dead ends: 2981 [2020-01-16 18:59:28,903 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:59:28,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2981 states. [2020-01-16 18:59:28,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2981 to 1578. [2020-01-16 18:59:28,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:59:28,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7104 transitions. [2020-01-16 18:59:28,994 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7104 transitions. Word has length 28 [2020-01-16 18:59:28,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:59:28,994 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7104 transitions. [2020-01-16 18:59:28,994 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:59:28,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7104 transitions. [2020-01-16 18:59:28,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:59:28,998 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:59:28,998 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:59:28,998 INFO L426 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:59:28,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:59:28,999 INFO L82 PathProgramCache]: Analyzing trace with hash -2021328620, now seen corresponding path program 3 times [2020-01-16 18:59:28,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:59:28,999 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274876810] [2020-01-16 18:59:29,000 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:59:29,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:59:29,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:59:29,652 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274876810] [2020-01-16 18:59:29,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:59:29,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:59:29,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898723931] [2020-01-16 18:59:29,653 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:59:29,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:59:29,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:59:29,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:59:29,654 INFO L87 Difference]: Start difference. First operand 1578 states and 7104 transitions. Second operand 11 states. [2020-01-16 18:59:29,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:59:29,877 INFO L93 Difference]: Finished difference Result 3006 states and 11932 transitions. [2020-01-16 18:59:29,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:59:29,877 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:59:29,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:59:29,885 INFO L225 Difference]: With dead ends: 3006 [2020-01-16 18:59:29,886 INFO L226 Difference]: Without dead ends: 2991 [2020-01-16 18:59:29,886 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:59:29,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2991 states. [2020-01-16 18:59:29,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2991 to 1584. [2020-01-16 18:59:29,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1584 states. [2020-01-16 18:59:29,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 7115 transitions. [2020-01-16 18:59:29,987 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 7115 transitions. Word has length 28 [2020-01-16 18:59:29,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:59:29,987 INFO L478 AbstractCegarLoop]: Abstraction has 1584 states and 7115 transitions. [2020-01-16 18:59:29,987 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:59:29,987 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 7115 transitions. [2020-01-16 18:59:29,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:59:29,991 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:59:29,992 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:59:29,992 INFO L426 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:59:29,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:59:29,992 INFO L82 PathProgramCache]: Analyzing trace with hash -531923624, now seen corresponding path program 4 times [2020-01-16 18:59:29,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:59:29,993 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479718918] [2020-01-16 18:59:29,993 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:59:29,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:59:30,461 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 30 [2020-01-16 18:59:30,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:59:30,587 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479718918] [2020-01-16 18:59:30,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:59:30,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:59:30,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752098261] [2020-01-16 18:59:30,589 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:59:30,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:59:30,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:59:30,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:59:30,589 INFO L87 Difference]: Start difference. First operand 1584 states and 7115 transitions. Second operand 11 states. [2020-01-16 18:59:30,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:59:30,766 INFO L93 Difference]: Finished difference Result 3011 states and 11936 transitions. [2020-01-16 18:59:30,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:59:30,767 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:59:30,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:59:30,775 INFO L225 Difference]: With dead ends: 3011 [2020-01-16 18:59:30,775 INFO L226 Difference]: Without dead ends: 2985 [2020-01-16 18:59:30,775 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:59:30,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2985 states. [2020-01-16 18:59:30,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2985 to 1578. [2020-01-16 18:59:30,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:59:30,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7098 transitions. [2020-01-16 18:59:30,859 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7098 transitions. Word has length 28 [2020-01-16 18:59:30,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:59:30,859 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7098 transitions. [2020-01-16 18:59:30,860 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:59:30,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7098 transitions. [2020-01-16 18:59:30,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:59:30,863 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:59:30,863 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:59:30,864 INFO L426 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:59:30,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:59:30,864 INFO L82 PathProgramCache]: Analyzing trace with hash 334314836, now seen corresponding path program 5 times [2020-01-16 18:59:30,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:59:30,865 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355305972] [2020-01-16 18:59:30,865 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:59:30,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:59:31,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:59:31,453 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355305972] [2020-01-16 18:59:31,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:59:31,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:59:31,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955898518] [2020-01-16 18:59:31,454 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:59:31,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:59:31,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:59:31,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:59:31,455 INFO L87 Difference]: Start difference. First operand 1578 states and 7098 transitions. Second operand 11 states. [2020-01-16 18:59:31,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:59:31,649 INFO L93 Difference]: Finished difference Result 3009 states and 11933 transitions. [2020-01-16 18:59:31,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:59:31,650 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:59:31,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:59:31,658 INFO L225 Difference]: With dead ends: 3009 [2020-01-16 18:59:31,658 INFO L226 Difference]: Without dead ends: 2993 [2020-01-16 18:59:31,659 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:59:31,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2993 states. [2020-01-16 18:59:31,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2993 to 1585. [2020-01-16 18:59:31,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 18:59:31,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7111 transitions. [2020-01-16 18:59:31,751 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7111 transitions. Word has length 28 [2020-01-16 18:59:31,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:59:31,752 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7111 transitions. [2020-01-16 18:59:31,752 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:59:31,752 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7111 transitions. [2020-01-16 18:59:31,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:59:31,755 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:59:31,756 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:59:31,756 INFO L426 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:59:31,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:59:31,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1079017334, now seen corresponding path program 6 times [2020-01-16 18:59:31,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:59:31,757 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756853184] [2020-01-16 18:59:31,757 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:59:31,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:59:32,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:59:32,370 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756853184] [2020-01-16 18:59:32,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:59:32,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:59:32,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476812753] [2020-01-16 18:59:32,371 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:59:32,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:59:32,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:59:32,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:59:32,372 INFO L87 Difference]: Start difference. First operand 1585 states and 7111 transitions. Second operand 11 states. [2020-01-16 18:59:32,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:59:32,574 INFO L93 Difference]: Finished difference Result 3013 states and 11934 transitions. [2020-01-16 18:59:32,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:59:32,575 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:59:32,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:59:32,584 INFO L225 Difference]: With dead ends: 3013 [2020-01-16 18:59:32,585 INFO L226 Difference]: Without dead ends: 2980 [2020-01-16 18:59:32,586 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:59:32,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2980 states. [2020-01-16 18:59:32,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2980 to 1572. [2020-01-16 18:59:32,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:59:32,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7081 transitions. [2020-01-16 18:59:32,722 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7081 transitions. Word has length 28 [2020-01-16 18:59:32,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:59:32,722 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7081 transitions. [2020-01-16 18:59:32,722 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:59:32,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7081 transitions. [2020-01-16 18:59:32,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:59:32,726 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:59:32,726 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:59:32,726 INFO L426 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:59:32,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:59:32,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1382710192, now seen corresponding path program 7 times [2020-01-16 18:59:32,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:59:32,727 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877499478] [2020-01-16 18:59:32,727 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:59:32,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:59:33,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:59:33,261 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877499478] [2020-01-16 18:59:33,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:59:33,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:59:33,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708357167] [2020-01-16 18:59:33,262 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:59:33,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:59:33,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:59:33,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:59:33,263 INFO L87 Difference]: Start difference. First operand 1572 states and 7081 transitions. Second operand 11 states. [2020-01-16 18:59:33,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:59:33,465 INFO L93 Difference]: Finished difference Result 2996 states and 11912 transitions. [2020-01-16 18:59:33,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:59:33,466 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:59:33,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:59:33,474 INFO L225 Difference]: With dead ends: 2996 [2020-01-16 18:59:33,474 INFO L226 Difference]: Without dead ends: 2981 [2020-01-16 18:59:33,474 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:59:33,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2981 states. [2020-01-16 18:59:33,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2981 to 1582. [2020-01-16 18:59:33,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 18:59:33,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7109 transitions. [2020-01-16 18:59:33,543 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7109 transitions. Word has length 28 [2020-01-16 18:59:33,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:59:33,543 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7109 transitions. [2020-01-16 18:59:33,543 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:59:33,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7109 transitions. [2020-01-16 18:59:33,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:59:33,546 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:59:33,546 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:59:33,546 INFO L426 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:59:33,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:59:33,546 INFO L82 PathProgramCache]: Analyzing trace with hash 2127412690, now seen corresponding path program 8 times [2020-01-16 18:59:33,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:59:33,547 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452955928] [2020-01-16 18:59:33,547 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:59:33,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:59:34,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:59:34,145 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452955928] [2020-01-16 18:59:34,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:59:34,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:59:34,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588540691] [2020-01-16 18:59:34,146 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:59:34,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:59:34,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:59:34,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:59:34,147 INFO L87 Difference]: Start difference. First operand 1582 states and 7109 transitions. Second operand 11 states. [2020-01-16 18:59:34,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:59:34,377 INFO L93 Difference]: Finished difference Result 2997 states and 11909 transitions. [2020-01-16 18:59:34,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:59:34,378 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:59:34,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:59:34,385 INFO L225 Difference]: With dead ends: 2997 [2020-01-16 18:59:34,385 INFO L226 Difference]: Without dead ends: 2976 [2020-01-16 18:59:34,385 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:59:34,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2976 states. [2020-01-16 18:59:34,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2976 to 1577. [2020-01-16 18:59:34,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:59:34,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7095 transitions. [2020-01-16 18:59:34,455 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7095 transitions. Word has length 28 [2020-01-16 18:59:34,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:59:34,455 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7095 transitions. [2020-01-16 18:59:34,455 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:59:34,455 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7095 transitions. [2020-01-16 18:59:34,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:59:34,458 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:59:34,458 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:59:34,458 INFO L426 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:59:34,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:59:34,459 INFO L82 PathProgramCache]: Analyzing trace with hash 309624812, now seen corresponding path program 9 times [2020-01-16 18:59:34,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:59:34,459 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589999490] [2020-01-16 18:59:34,459 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:59:34,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:59:35,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:59:35,004 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589999490] [2020-01-16 18:59:35,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:59:35,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:59:35,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355885810] [2020-01-16 18:59:35,005 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:59:35,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:59:35,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:59:35,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:59:35,006 INFO L87 Difference]: Start difference. First operand 1577 states and 7095 transitions. Second operand 11 states. [2020-01-16 18:59:35,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:59:35,198 INFO L93 Difference]: Finished difference Result 2998 states and 11911 transitions. [2020-01-16 18:59:35,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:59:35,199 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:59:35,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:59:35,206 INFO L225 Difference]: With dead ends: 2998 [2020-01-16 18:59:35,206 INFO L226 Difference]: Without dead ends: 2983 [2020-01-16 18:59:35,206 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:59:35,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2983 states. [2020-01-16 18:59:35,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2983 to 1582. [2020-01-16 18:59:35,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 18:59:35,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7104 transitions. [2020-01-16 18:59:35,276 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7104 transitions. Word has length 28 [2020-01-16 18:59:35,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:59:35,276 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7104 transitions. [2020-01-16 18:59:35,276 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:59:35,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7104 transitions. [2020-01-16 18:59:35,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:59:35,279 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:59:35,279 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:59:35,279 INFO L426 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:59:35,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:59:35,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1751234990, now seen corresponding path program 10 times [2020-01-16 18:59:35,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:59:35,280 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685638977] [2020-01-16 18:59:35,280 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:59:35,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:59:35,842 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:59:35,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:59:35,849 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685638977] [2020-01-16 18:59:35,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:59:35,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:59:35,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707443259] [2020-01-16 18:59:35,850 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:59:35,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:59:35,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:59:35,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:59:35,850 INFO L87 Difference]: Start difference. First operand 1582 states and 7104 transitions. Second operand 11 states. [2020-01-16 18:59:36,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:59:36,100 INFO L93 Difference]: Finished difference Result 3001 states and 11912 transitions. [2020-01-16 18:59:36,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:59:36,101 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:59:36,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:59:36,108 INFO L225 Difference]: With dead ends: 3001 [2020-01-16 18:59:36,108 INFO L226 Difference]: Without dead ends: 2978 [2020-01-16 18:59:36,109 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:59:36,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2978 states. [2020-01-16 18:59:36,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2978 to 1577. [2020-01-16 18:59:36,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:59:36,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7090 transitions. [2020-01-16 18:59:36,176 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7090 transitions. Word has length 28 [2020-01-16 18:59:36,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:59:36,176 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7090 transitions. [2020-01-16 18:59:36,176 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:59:36,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7090 transitions. [2020-01-16 18:59:36,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:59:36,178 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:59:36,179 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:59:36,179 INFO L426 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:59:36,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:59:36,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1629699028, now seen corresponding path program 11 times [2020-01-16 18:59:36,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:59:36,179 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325846791] [2020-01-16 18:59:36,179 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:59:36,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:59:36,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:59:36,718 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325846791] [2020-01-16 18:59:36,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:59:36,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:59:36,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143376798] [2020-01-16 18:59:36,719 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:59:36,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:59:36,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:59:36,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:59:36,720 INFO L87 Difference]: Start difference. First operand 1577 states and 7090 transitions. Second operand 11 states. [2020-01-16 18:59:36,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:59:36,905 INFO L93 Difference]: Finished difference Result 3001 states and 11913 transitions. [2020-01-16 18:59:36,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:59:36,906 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:59:36,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:59:36,914 INFO L225 Difference]: With dead ends: 3001 [2020-01-16 18:59:36,914 INFO L226 Difference]: Without dead ends: 2985 [2020-01-16 18:59:36,914 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:59:36,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2985 states. [2020-01-16 18:59:36,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2985 to 1583. [2020-01-16 18:59:36,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:59:36,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7101 transitions. [2020-01-16 18:59:36,982 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7101 transitions. Word has length 28 [2020-01-16 18:59:36,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:59:36,982 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7101 transitions. [2020-01-16 18:59:36,982 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:59:36,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7101 transitions. [2020-01-16 18:59:36,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:59:36,984 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:59:36,984 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:59:36,985 INFO L426 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:59:36,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:59:36,985 INFO L82 PathProgramCache]: Analyzing trace with hash -140294032, now seen corresponding path program 12 times [2020-01-16 18:59:36,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:59:36,985 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360909388] [2020-01-16 18:59:36,985 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:59:36,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:59:37,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:59:37,560 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360909388] [2020-01-16 18:59:37,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:59:37,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:59:37,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418970039] [2020-01-16 18:59:37,561 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:59:37,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:59:37,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:59:37,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:59:37,562 INFO L87 Difference]: Start difference. First operand 1583 states and 7101 transitions. Second operand 11 states. [2020-01-16 18:59:37,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:59:37,762 INFO L93 Difference]: Finished difference Result 3003 states and 11911 transitions. [2020-01-16 18:59:37,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:59:37,762 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:59:37,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:59:37,770 INFO L225 Difference]: With dead ends: 3003 [2020-01-16 18:59:37,770 INFO L226 Difference]: Without dead ends: 2974 [2020-01-16 18:59:37,770 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:59:37,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2974 states. [2020-01-16 18:59:37,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2974 to 1572. [2020-01-16 18:59:37,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:59:37,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7076 transitions. [2020-01-16 18:59:37,838 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7076 transitions. Word has length 28 [2020-01-16 18:59:37,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:59:37,839 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7076 transitions. [2020-01-16 18:59:37,839 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:59:37,839 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7076 transitions. [2020-01-16 18:59:37,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:59:37,841 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:59:37,841 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:59:37,841 INFO L426 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:59:37,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:59:37,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1393213296, now seen corresponding path program 13 times [2020-01-16 18:59:37,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:59:37,842 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634379598] [2020-01-16 18:59:37,842 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:59:37,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:59:38,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:59:38,407 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634379598] [2020-01-16 18:59:38,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:59:38,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:59:38,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473561933] [2020-01-16 18:59:38,408 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:59:38,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:59:38,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:59:38,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:59:38,409 INFO L87 Difference]: Start difference. First operand 1572 states and 7076 transitions. Second operand 11 states. [2020-01-16 18:59:38,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:59:38,638 INFO L93 Difference]: Finished difference Result 3012 states and 11939 transitions. [2020-01-16 18:59:38,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:59:38,638 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:59:38,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:59:38,644 INFO L225 Difference]: With dead ends: 3012 [2020-01-16 18:59:38,645 INFO L226 Difference]: Without dead ends: 2997 [2020-01-16 18:59:38,645 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:59:38,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2997 states. [2020-01-16 18:59:38,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2997 to 1585. [2020-01-16 18:59:38,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 18:59:38,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7111 transitions. [2020-01-16 18:59:38,712 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7111 transitions. Word has length 28 [2020-01-16 18:59:38,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:59:38,712 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7111 transitions. [2020-01-16 18:59:38,713 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:59:38,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7111 transitions. [2020-01-16 18:59:38,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:59:38,716 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:59:38,716 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:59:38,716 INFO L426 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:59:38,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:59:38,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1412349004, now seen corresponding path program 14 times [2020-01-16 18:59:38,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:59:38,717 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609728474] [2020-01-16 18:59:38,717 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:59:38,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:59:39,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:59:39,266 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609728474] [2020-01-16 18:59:39,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:59:39,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:59:39,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165911992] [2020-01-16 18:59:39,267 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:59:39,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:59:39,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:59:39,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:59:39,268 INFO L87 Difference]: Start difference. First operand 1585 states and 7111 transitions. Second operand 11 states. [2020-01-16 18:59:39,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:59:39,476 INFO L93 Difference]: Finished difference Result 3017 states and 11943 transitions. [2020-01-16 18:59:39,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:59:39,476 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:59:39,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:59:39,519 INFO L225 Difference]: With dead ends: 3017 [2020-01-16 18:59:39,519 INFO L226 Difference]: Without dead ends: 2991 [2020-01-16 18:59:39,519 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:59:39,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2991 states. [2020-01-16 18:59:39,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2991 to 1579. [2020-01-16 18:59:39,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:59:39,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7094 transitions. [2020-01-16 18:59:39,590 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7094 transitions. Word has length 28 [2020-01-16 18:59:39,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:59:39,591 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7094 transitions. [2020-01-16 18:59:39,591 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:59:39,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7094 transitions. [2020-01-16 18:59:39,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:59:39,594 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:59:39,594 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:59:39,595 INFO L426 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:59:39,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:59:39,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1290813042, now seen corresponding path program 15 times [2020-01-16 18:59:39,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:59:39,595 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933601856] [2020-01-16 18:59:39,595 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:59:39,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:59:40,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:59:40,162 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933601856] [2020-01-16 18:59:40,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:59:40,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:59:40,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320766696] [2020-01-16 18:59:40,163 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:59:40,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:59:40,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:59:40,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:59:40,164 INFO L87 Difference]: Start difference. First operand 1579 states and 7094 transitions. Second operand 11 states. [2020-01-16 18:59:40,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:59:40,397 INFO L93 Difference]: Finished difference Result 3009 states and 11928 transitions. [2020-01-16 18:59:40,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:59:40,398 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:59:40,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:59:40,405 INFO L225 Difference]: With dead ends: 3009 [2020-01-16 18:59:40,405 INFO L226 Difference]: Without dead ends: 2994 [2020-01-16 18:59:40,405 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:59:40,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2020-01-16 18:59:40,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 1584. [2020-01-16 18:59:40,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1584 states. [2020-01-16 18:59:40,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 7103 transitions. [2020-01-16 18:59:40,473 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 7103 transitions. Word has length 28 [2020-01-16 18:59:40,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:59:40,473 INFO L478 AbstractCegarLoop]: Abstraction has 1584 states and 7103 transitions. [2020-01-16 18:59:40,473 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:59:40,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 7103 transitions. [2020-01-16 18:59:40,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:59:40,476 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:59:40,476 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:59:40,476 INFO L426 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:59:40,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:59:40,476 INFO L82 PathProgramCache]: Analyzing trace with hash 943294452, now seen corresponding path program 16 times [2020-01-16 18:59:40,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:59:40,477 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895286388] [2020-01-16 18:59:40,477 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:59:40,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:59:41,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:59:41,027 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895286388] [2020-01-16 18:59:41,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:59:41,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:59:41,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929376566] [2020-01-16 18:59:41,028 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:59:41,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:59:41,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:59:41,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:59:41,029 INFO L87 Difference]: Start difference. First operand 1584 states and 7103 transitions. Second operand 11 states. [2020-01-16 18:59:41,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:59:41,254 INFO L93 Difference]: Finished difference Result 3012 states and 11929 transitions. [2020-01-16 18:59:41,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:59:41,255 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:59:41,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:59:41,262 INFO L225 Difference]: With dead ends: 3012 [2020-01-16 18:59:41,262 INFO L226 Difference]: Without dead ends: 2989 [2020-01-16 18:59:41,263 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:59:41,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2020-01-16 18:59:41,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 1579. [2020-01-16 18:59:41,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:59:41,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7089 transitions. [2020-01-16 18:59:41,333 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7089 transitions. Word has length 28 [2020-01-16 18:59:41,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:59:41,333 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7089 transitions. [2020-01-16 18:59:41,333 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:59:41,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7089 transitions. [2020-01-16 18:59:41,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:59:41,336 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:59:41,336 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:59:41,336 INFO L426 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:59:41,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:59:41,336 INFO L82 PathProgramCache]: Analyzing trace with hash -874493426, now seen corresponding path program 17 times [2020-01-16 18:59:41,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:59:41,337 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677529383] [2020-01-16 18:59:41,337 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:59:41,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:59:41,791 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 30 [2020-01-16 18:59:41,910 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-01-16 18:59:41,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:59:41,918 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677529383] [2020-01-16 18:59:41,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:59:41,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:59:41,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595020396] [2020-01-16 18:59:41,918 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:59:41,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:59:41,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:59:41,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:59:41,919 INFO L87 Difference]: Start difference. First operand 1579 states and 7089 transitions. Second operand 11 states. [2020-01-16 18:59:42,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:59:42,135 INFO L93 Difference]: Finished difference Result 3024 states and 11953 transitions. [2020-01-16 18:59:42,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:59:42,136 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:59:42,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:59:42,144 INFO L225 Difference]: With dead ends: 3024 [2020-01-16 18:59:42,144 INFO L226 Difference]: Without dead ends: 3004 [2020-01-16 18:59:42,144 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:59:42,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3004 states. [2020-01-16 18:59:42,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3004 to 1589. [2020-01-16 18:59:42,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1589 states. [2020-01-16 18:59:42,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 7106 transitions. [2020-01-16 18:59:42,212 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 7106 transitions. Word has length 28 [2020-01-16 18:59:42,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:59:42,212 INFO L478 AbstractCegarLoop]: Abstraction has 1589 states and 7106 transitions. [2020-01-16 18:59:42,212 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:59:42,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 7106 transitions. [2020-01-16 18:59:42,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:59:42,216 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:59:42,216 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:59:42,216 INFO L426 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:59:42,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:59:42,217 INFO L82 PathProgramCache]: Analyzing trace with hash -129790928, now seen corresponding path program 18 times [2020-01-16 18:59:42,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:59:42,217 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577104611] [2020-01-16 18:59:42,217 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:59:42,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:59:42,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:59:42,793 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577104611] [2020-01-16 18:59:42,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:59:42,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:59:42,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656458903] [2020-01-16 18:59:42,794 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:59:42,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:59:42,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:59:42,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:59:42,795 INFO L87 Difference]: Start difference. First operand 1589 states and 7106 transitions. Second operand 11 states. [2020-01-16 18:59:43,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:59:43,005 INFO L93 Difference]: Finished difference Result 3022 states and 11941 transitions. [2020-01-16 18:59:43,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:59:43,006 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:59:43,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:59:43,013 INFO L225 Difference]: With dead ends: 3022 [2020-01-16 18:59:43,014 INFO L226 Difference]: Without dead ends: 2987 [2020-01-16 18:59:43,014 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:59:43,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2987 states. [2020-01-16 18:59:43,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2987 to 1572. [2020-01-16 18:59:43,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:59:43,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7069 transitions. [2020-01-16 18:59:43,122 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7069 transitions. Word has length 28 [2020-01-16 18:59:43,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:59:43,122 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7069 transitions. [2020-01-16 18:59:43,122 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:59:43,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7069 transitions. [2020-01-16 18:59:43,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:59:43,125 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:59:43,125 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:59:43,125 INFO L426 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:59:43,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:59:43,125 INFO L82 PathProgramCache]: Analyzing trace with hash -2146548398, now seen corresponding path program 19 times [2020-01-16 18:59:43,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:59:43,126 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860730710] [2020-01-16 18:59:43,126 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:59:43,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:59:43,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:59:43,682 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860730710] [2020-01-16 18:59:43,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:59:43,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:59:43,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65675612] [2020-01-16 18:59:43,683 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:59:43,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:59:43,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:59:43,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:59:43,683 INFO L87 Difference]: Start difference. First operand 1572 states and 7069 transitions. Second operand 11 states. [2020-01-16 18:59:43,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:59:43,891 INFO L93 Difference]: Finished difference Result 3019 states and 11951 transitions. [2020-01-16 18:59:43,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:59:43,892 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:59:43,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:59:43,899 INFO L225 Difference]: With dead ends: 3019 [2020-01-16 18:59:43,899 INFO L226 Difference]: Without dead ends: 3003 [2020-01-16 18:59:43,899 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:59:43,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3003 states. [2020-01-16 18:59:43,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3003 to 1587. [2020-01-16 18:59:43,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1587 states. [2020-01-16 18:59:43,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 7110 transitions. [2020-01-16 18:59:43,966 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 7110 transitions. Word has length 28 [2020-01-16 18:59:43,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:59:43,967 INFO L478 AbstractCegarLoop]: Abstraction has 1587 states and 7110 transitions. [2020-01-16 18:59:43,967 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:59:43,967 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 7110 transitions. [2020-01-16 18:59:43,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:59:43,969 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:59:43,969 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:59:43,969 INFO L426 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:59:43,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:59:43,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1401845900, now seen corresponding path program 20 times [2020-01-16 18:59:43,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:59:43,970 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700672687] [2020-01-16 18:59:43,970 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:59:43,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:59:44,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:59:44,594 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700672687] [2020-01-16 18:59:44,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:59:44,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:59:44,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039085290] [2020-01-16 18:59:44,595 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:59:44,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:59:44,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:59:44,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:59:44,595 INFO L87 Difference]: Start difference. First operand 1587 states and 7110 transitions. Second operand 11 states. [2020-01-16 18:59:44,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:59:44,764 INFO L93 Difference]: Finished difference Result 3023 states and 11952 transitions. [2020-01-16 18:59:44,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:59:44,765 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:59:44,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:59:44,773 INFO L225 Difference]: With dead ends: 3023 [2020-01-16 18:59:44,773 INFO L226 Difference]: Without dead ends: 2996 [2020-01-16 18:59:44,773 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:59:44,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2996 states. [2020-01-16 18:59:44,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2996 to 1580. [2020-01-16 18:59:44,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:59:44,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7090 transitions. [2020-01-16 18:59:44,841 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7090 transitions. Word has length 28 [2020-01-16 18:59:44,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:59:44,842 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7090 transitions. [2020-01-16 18:59:44,842 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:59:44,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7090 transitions. [2020-01-16 18:59:44,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:59:44,844 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:59:44,844 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:59:44,844 INFO L426 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:59:44,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:59:44,845 INFO L82 PathProgramCache]: Analyzing trace with hash -535607440, now seen corresponding path program 21 times [2020-01-16 18:59:44,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:59:44,845 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213831623] [2020-01-16 18:59:44,845 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:59:44,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:59:45,371 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:59:45,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:59:45,378 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213831623] [2020-01-16 18:59:45,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:59:45,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:59:45,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067502071] [2020-01-16 18:59:45,379 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:59:45,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:59:45,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:59:45,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:59:45,380 INFO L87 Difference]: Start difference. First operand 1580 states and 7090 transitions. Second operand 11 states. [2020-01-16 18:59:45,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:59:45,631 INFO L93 Difference]: Finished difference Result 3016 states and 11939 transitions. [2020-01-16 18:59:45,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:59:45,632 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:59:45,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:59:45,639 INFO L225 Difference]: With dead ends: 3016 [2020-01-16 18:59:45,639 INFO L226 Difference]: Without dead ends: 3000 [2020-01-16 18:59:45,640 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:59:45,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3000 states. [2020-01-16 18:59:45,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3000 to 1586. [2020-01-16 18:59:45,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1586 states. [2020-01-16 18:59:45,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 7101 transitions. [2020-01-16 18:59:45,719 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 7101 transitions. Word has length 28 [2020-01-16 18:59:45,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:59:45,719 INFO L478 AbstractCegarLoop]: Abstraction has 1586 states and 7101 transitions. [2020-01-16 18:59:45,719 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:59:45,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 7101 transitions. [2020-01-16 18:59:45,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:59:45,722 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:59:45,723 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:59:45,723 INFO L426 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:59:45,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:59:45,723 INFO L82 PathProgramCache]: Analyzing trace with hash 953797556, now seen corresponding path program 22 times [2020-01-16 18:59:45,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:59:45,724 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610263341] [2020-01-16 18:59:45,724 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:59:45,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:59:46,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:59:46,345 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610263341] [2020-01-16 18:59:46,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:59:46,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:59:46,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661674711] [2020-01-16 18:59:46,345 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:59:46,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:59:46,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:59:46,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:59:46,346 INFO L87 Difference]: Start difference. First operand 1586 states and 7101 transitions. Second operand 11 states. [2020-01-16 18:59:46,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:59:46,536 INFO L93 Difference]: Finished difference Result 3018 states and 11937 transitions. [2020-01-16 18:59:46,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:59:46,537 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:59:46,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:59:46,544 INFO L225 Difference]: With dead ends: 3018 [2020-01-16 18:59:46,544 INFO L226 Difference]: Without dead ends: 2994 [2020-01-16 18:59:46,545 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:59:46,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2020-01-16 18:59:46,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 1580. [2020-01-16 18:59:46,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:59:46,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7084 transitions. [2020-01-16 18:59:46,613 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7084 transitions. Word has length 28 [2020-01-16 18:59:46,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:59:46,614 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7084 transitions. [2020-01-16 18:59:46,614 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:59:46,614 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7084 transitions. [2020-01-16 18:59:46,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:59:46,616 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:59:46,616 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:59:46,616 INFO L426 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:59:46,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:59:46,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1820036016, now seen corresponding path program 23 times [2020-01-16 18:59:46,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:59:46,617 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948048188] [2020-01-16 18:59:46,617 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:59:46,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:59:47,188 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-01-16 18:59:47,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:59:47,304 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948048188] [2020-01-16 18:59:47,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:59:47,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:59:47,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203929924] [2020-01-16 18:59:47,304 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:59:47,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:59:47,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:59:47,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:59:47,305 INFO L87 Difference]: Start difference. First operand 1580 states and 7084 transitions. Second operand 11 states. [2020-01-16 18:59:47,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:59:47,463 INFO L93 Difference]: Finished difference Result 3028 states and 11956 transitions. [2020-01-16 18:59:47,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:59:47,463 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:59:47,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:59:47,470 INFO L225 Difference]: With dead ends: 3028 [2020-01-16 18:59:47,470 INFO L226 Difference]: Without dead ends: 3008 [2020-01-16 18:59:47,471 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:59:47,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2020-01-16 18:59:47,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 1590. [2020-01-16 18:59:47,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1590 states. [2020-01-16 18:59:47,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 7101 transitions. [2020-01-16 18:59:47,539 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 7101 transitions. Word has length 28 [2020-01-16 18:59:47,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:59:47,539 INFO L478 AbstractCegarLoop]: Abstraction has 1590 states and 7101 transitions. [2020-01-16 18:59:47,539 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:59:47,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 7101 transitions. [2020-01-16 18:59:47,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:59:47,541 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:59:47,542 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:59:47,542 INFO L426 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:59:47,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:59:47,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1730228782, now seen corresponding path program 24 times [2020-01-16 18:59:47,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:59:47,542 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128862365] [2020-01-16 18:59:47,543 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:59:47,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:59:48,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:59:48,128 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128862365] [2020-01-16 18:59:48,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:59:48,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:59:48,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620563974] [2020-01-16 18:59:48,129 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:59:48,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:59:48,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:59:48,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:59:48,133 INFO L87 Difference]: Start difference. First operand 1590 states and 7101 transitions. Second operand 11 states. [2020-01-16 18:59:48,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:59:48,401 INFO L93 Difference]: Finished difference Result 3026 states and 11944 transitions. [2020-01-16 18:59:48,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:59:48,401 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:59:48,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:59:48,409 INFO L225 Difference]: With dead ends: 3026 [2020-01-16 18:59:48,409 INFO L226 Difference]: Without dead ends: 2983 [2020-01-16 18:59:48,409 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:59:48,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2983 states. [2020-01-16 18:59:48,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2983 to 1565. [2020-01-16 18:59:48,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 18:59:48,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7049 transitions. [2020-01-16 18:59:48,476 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7049 transitions. Word has length 28 [2020-01-16 18:59:48,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:59:48,476 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7049 transitions. [2020-01-16 18:59:48,476 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:59:48,476 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7049 transitions. [2020-01-16 18:59:48,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:59:48,479 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:59:48,479 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:59:48,479 INFO L426 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:59:48,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:59:48,479 INFO L82 PathProgramCache]: Analyzing trace with hash 582955646, now seen corresponding path program 25 times [2020-01-16 18:59:48,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:59:48,479 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345882072] [2020-01-16 18:59:48,479 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:59:48,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:59:49,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:59:49,041 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345882072] [2020-01-16 18:59:49,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:59:49,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:59:49,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528078070] [2020-01-16 18:59:49,042 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:59:49,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:59:49,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:59:49,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:59:49,042 INFO L87 Difference]: Start difference. First operand 1565 states and 7049 transitions. Second operand 11 states. [2020-01-16 18:59:49,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:59:49,257 INFO L93 Difference]: Finished difference Result 2995 states and 11908 transitions. [2020-01-16 18:59:49,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:59:49,258 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:59:49,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:59:49,265 INFO L225 Difference]: With dead ends: 2995 [2020-01-16 18:59:49,266 INFO L226 Difference]: Without dead ends: 2980 [2020-01-16 18:59:49,266 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:59:49,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2980 states. [2020-01-16 18:59:49,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2980 to 1582. [2020-01-16 18:59:49,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 18:59:49,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7108 transitions. [2020-01-16 18:59:49,334 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7108 transitions. Word has length 28 [2020-01-16 18:59:49,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:59:49,335 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7108 transitions. [2020-01-16 18:59:49,335 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:59:49,335 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7108 transitions. [2020-01-16 18:59:49,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:59:49,337 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:59:49,337 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:59:49,338 INFO L426 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:59:49,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:59:49,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1327658144, now seen corresponding path program 26 times [2020-01-16 18:59:49,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:59:49,338 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000891118] [2020-01-16 18:59:49,338 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:59:49,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:59:49,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:59:49,891 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000891118] [2020-01-16 18:59:49,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:59:49,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:59:49,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159010269] [2020-01-16 18:59:49,891 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:59:49,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:59:49,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:59:49,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:59:49,892 INFO L87 Difference]: Start difference. First operand 1582 states and 7108 transitions. Second operand 11 states. [2020-01-16 18:59:50,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:59:50,074 INFO L93 Difference]: Finished difference Result 2996 states and 11905 transitions. [2020-01-16 18:59:50,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:59:50,075 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:59:50,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:59:50,082 INFO L225 Difference]: With dead ends: 2996 [2020-01-16 18:59:50,083 INFO L226 Difference]: Without dead ends: 2975 [2020-01-16 18:59:50,083 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:59:50,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2975 states. [2020-01-16 18:59:50,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2975 to 1577. [2020-01-16 18:59:50,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:59:50,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7094 transitions. [2020-01-16 18:59:50,157 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7094 transitions. Word has length 28 [2020-01-16 18:59:50,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:59:50,157 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7094 transitions. [2020-01-16 18:59:50,157 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:59:50,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7094 transitions. [2020-01-16 18:59:50,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:59:50,161 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:59:50,161 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:59:50,161 INFO L426 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:59:50,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:59:50,162 INFO L82 PathProgramCache]: Analyzing trace with hash -2101070692, now seen corresponding path program 27 times [2020-01-16 18:59:50,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:59:50,162 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135006518] [2020-01-16 18:59:50,162 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:59:50,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:59:50,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:59:50,714 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135006518] [2020-01-16 18:59:50,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:59:50,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:59:50,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047707016] [2020-01-16 18:59:50,715 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:59:50,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:59:50,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:59:50,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:59:50,715 INFO L87 Difference]: Start difference. First operand 1577 states and 7094 transitions. Second operand 11 states. [2020-01-16 18:59:50,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:59:50,954 INFO L93 Difference]: Finished difference Result 3000 states and 11912 transitions. [2020-01-16 18:59:50,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:59:50,954 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:59:50,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:59:50,962 INFO L225 Difference]: With dead ends: 3000 [2020-01-16 18:59:50,962 INFO L226 Difference]: Without dead ends: 2985 [2020-01-16 18:59:50,963 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:59:51,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2985 states. [2020-01-16 18:59:51,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2985 to 1583. [2020-01-16 18:59:51,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:59:51,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7105 transitions. [2020-01-16 18:59:51,135 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7105 transitions. Word has length 28 [2020-01-16 18:59:51,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:59:51,135 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7105 transitions. [2020-01-16 18:59:51,136 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:59:51,136 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7105 transitions. [2020-01-16 18:59:51,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:59:51,139 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:59:51,139 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:59:51,140 INFO L426 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:59:51,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:59:51,140 INFO L82 PathProgramCache]: Analyzing trace with hash -611665696, now seen corresponding path program 28 times [2020-01-16 18:59:51,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:59:51,140 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607572507] [2020-01-16 18:59:51,141 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:59:51,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:59:51,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:59:51,725 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607572507] [2020-01-16 18:59:51,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:59:51,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:59:51,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759498280] [2020-01-16 18:59:51,726 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:59:51,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:59:51,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:59:51,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:59:51,727 INFO L87 Difference]: Start difference. First operand 1583 states and 7105 transitions. Second operand 11 states. [2020-01-16 18:59:51,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:59:51,904 INFO L93 Difference]: Finished difference Result 3005 states and 11916 transitions. [2020-01-16 18:59:51,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:59:51,905 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:59:51,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:59:51,912 INFO L225 Difference]: With dead ends: 3005 [2020-01-16 18:59:51,912 INFO L226 Difference]: Without dead ends: 2979 [2020-01-16 18:59:51,912 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:59:51,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2979 states. [2020-01-16 18:59:51,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2979 to 1577. [2020-01-16 18:59:51,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:59:51,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7088 transitions. [2020-01-16 18:59:51,981 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7088 transitions. Word has length 28 [2020-01-16 18:59:51,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:59:51,981 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7088 transitions. [2020-01-16 18:59:51,981 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:59:51,981 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7088 transitions. [2020-01-16 18:59:51,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:59:51,983 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:59:51,983 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:59:51,984 INFO L426 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:59:51,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:59:51,984 INFO L82 PathProgramCache]: Analyzing trace with hash 254572764, now seen corresponding path program 29 times [2020-01-16 18:59:51,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:59:51,984 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299818891] [2020-01-16 18:59:51,984 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:59:51,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:59:52,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:59:52,557 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299818891] [2020-01-16 18:59:52,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:59:52,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:59:52,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045940226] [2020-01-16 18:59:52,557 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:59:52,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:59:52,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:59:52,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:59:52,558 INFO L87 Difference]: Start difference. First operand 1577 states and 7088 transitions. Second operand 11 states. [2020-01-16 18:59:52,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:59:52,743 INFO L93 Difference]: Finished difference Result 3003 states and 11913 transitions. [2020-01-16 18:59:52,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:59:52,744 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:59:52,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:59:52,752 INFO L225 Difference]: With dead ends: 3003 [2020-01-16 18:59:52,752 INFO L226 Difference]: Without dead ends: 2987 [2020-01-16 18:59:52,752 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:59:52,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2987 states. [2020-01-16 18:59:52,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2987 to 1584. [2020-01-16 18:59:52,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1584 states. [2020-01-16 18:59:52,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 7101 transitions. [2020-01-16 18:59:52,819 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 7101 transitions. Word has length 28 [2020-01-16 18:59:52,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:59:52,819 INFO L478 AbstractCegarLoop]: Abstraction has 1584 states and 7101 transitions. [2020-01-16 18:59:52,819 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:59:52,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 7101 transitions. [2020-01-16 18:59:52,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:59:52,822 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:59:52,822 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:59:52,822 INFO L426 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:59:52,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:59:52,822 INFO L82 PathProgramCache]: Analyzing trace with hash 999275262, now seen corresponding path program 30 times [2020-01-16 18:59:52,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:59:52,822 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229692921] [2020-01-16 18:59:52,822 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:59:52,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:59:53,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:59:53,389 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229692921] [2020-01-16 18:59:53,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:59:53,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:59:53,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41174442] [2020-01-16 18:59:53,390 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:59:53,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:59:53,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:59:53,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:59:53,390 INFO L87 Difference]: Start difference. First operand 1584 states and 7101 transitions. Second operand 11 states. [2020-01-16 18:59:53,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:59:53,568 INFO L93 Difference]: Finished difference Result 3007 states and 11914 transitions. [2020-01-16 18:59:53,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:59:53,568 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:59:53,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:59:53,575 INFO L225 Difference]: With dead ends: 3007 [2020-01-16 18:59:53,575 INFO L226 Difference]: Without dead ends: 2974 [2020-01-16 18:59:53,575 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:59:53,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2974 states. [2020-01-16 18:59:53,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2974 to 1571. [2020-01-16 18:59:53,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:59:53,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7071 transitions. [2020-01-16 18:59:53,642 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7071 transitions. Word has length 28 [2020-01-16 18:59:53,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:59:53,642 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7071 transitions. [2020-01-16 18:59:53,642 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:59:53,642 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7071 transitions. [2020-01-16 18:59:53,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:59:53,645 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:59:53,645 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:59:53,645 INFO L426 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:59:53,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:59:53,645 INFO L82 PathProgramCache]: Analyzing trace with hash -242257480, now seen corresponding path program 31 times [2020-01-16 18:59:53,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:59:53,645 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654739076] [2020-01-16 18:59:53,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:59:53,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:59:54,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:59:54,205 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654739076] [2020-01-16 18:59:54,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:59:54,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:59:54,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560588070] [2020-01-16 18:59:54,206 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:59:54,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:59:54,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:59:54,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:59:54,206 INFO L87 Difference]: Start difference. First operand 1571 states and 7071 transitions. Second operand 11 states. [2020-01-16 18:59:54,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:59:54,432 INFO L93 Difference]: Finished difference Result 2989 states and 11890 transitions. [2020-01-16 18:59:54,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:59:54,432 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:59:54,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:59:54,440 INFO L225 Difference]: With dead ends: 2989 [2020-01-16 18:59:54,440 INFO L226 Difference]: Without dead ends: 2974 [2020-01-16 18:59:54,440 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:59:54,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2974 states. [2020-01-16 18:59:54,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2974 to 1581. [2020-01-16 18:59:54,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:59:54,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7099 transitions. [2020-01-16 18:59:54,513 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7099 transitions. Word has length 28 [2020-01-16 18:59:54,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:59:54,513 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7099 transitions. [2020-01-16 18:59:54,513 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:59:54,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7099 transitions. [2020-01-16 18:59:54,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:59:54,517 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:59:54,517 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:59:54,517 INFO L426 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:59:54,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:59:54,517 INFO L82 PathProgramCache]: Analyzing trace with hash 502445018, now seen corresponding path program 32 times [2020-01-16 18:59:54,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:59:54,518 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573005398] [2020-01-16 18:59:54,518 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:59:54,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:59:55,077 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:59:55,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:59:55,085 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573005398] [2020-01-16 18:59:55,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:59:55,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:59:55,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849730548] [2020-01-16 18:59:55,085 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:59:55,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:59:55,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:59:55,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:59:55,086 INFO L87 Difference]: Start difference. First operand 1581 states and 7099 transitions. Second operand 11 states. [2020-01-16 18:59:55,294 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 31 [2020-01-16 18:59:55,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:59:55,312 INFO L93 Difference]: Finished difference Result 2990 states and 11887 transitions. [2020-01-16 18:59:55,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:59:55,313 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:59:55,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:59:55,320 INFO L225 Difference]: With dead ends: 2990 [2020-01-16 18:59:55,320 INFO L226 Difference]: Without dead ends: 2969 [2020-01-16 18:59:55,321 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:59:55,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2969 states. [2020-01-16 18:59:55,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2969 to 1576. [2020-01-16 18:59:55,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:59:55,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7085 transitions. [2020-01-16 18:59:55,399 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7085 transitions. Word has length 28 [2020-01-16 18:59:55,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:59:55,399 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7085 transitions. [2020-01-16 18:59:55,399 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:59:55,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7085 transitions. [2020-01-16 18:59:55,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:59:55,403 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:59:55,403 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:59:55,403 INFO L426 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:59:55,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:59:55,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1850572662, now seen corresponding path program 33 times [2020-01-16 18:59:55,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:59:55,404 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389843166] [2020-01-16 18:59:55,404 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:59:55,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:59:55,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:59:55,968 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389843166] [2020-01-16 18:59:55,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:59:55,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:59:55,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111222773] [2020-01-16 18:59:55,968 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:59:55,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:59:55,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:59:55,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:59:55,969 INFO L87 Difference]: Start difference. First operand 1576 states and 7085 transitions. Second operand 11 states. [2020-01-16 18:59:56,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:59:56,205 INFO L93 Difference]: Finished difference Result 2990 states and 11887 transitions. [2020-01-16 18:59:56,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:59:56,205 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:59:56,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:59:56,212 INFO L225 Difference]: With dead ends: 2990 [2020-01-16 18:59:56,213 INFO L226 Difference]: Without dead ends: 2975 [2020-01-16 18:59:56,213 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:59:56,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2975 states. [2020-01-16 18:59:56,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2975 to 1581. [2020-01-16 18:59:56,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:59:56,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7094 transitions. [2020-01-16 18:59:56,279 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7094 transitions. Word has length 28 [2020-01-16 18:59:56,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:59:56,279 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7094 transitions. [2020-01-16 18:59:56,279 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:59:56,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7094 transitions. [2020-01-16 18:59:56,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:59:56,282 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:59:56,282 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:59:56,282 INFO L426 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:59:56,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:59:56,282 INFO L82 PathProgramCache]: Analyzing trace with hash -187919974, now seen corresponding path program 34 times [2020-01-16 18:59:56,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:59:56,283 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745236706] [2020-01-16 18:59:56,283 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:59:56,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:59:56,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:59:56,861 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745236706] [2020-01-16 18:59:56,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:59:56,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:59:56,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057387064] [2020-01-16 18:59:56,861 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:59:56,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:59:56,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:59:56,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:59:56,862 INFO L87 Difference]: Start difference. First operand 1581 states and 7094 transitions. Second operand 11 states. [2020-01-16 18:59:57,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:59:57,051 INFO L93 Difference]: Finished difference Result 2992 states and 11886 transitions. [2020-01-16 18:59:57,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:59:57,052 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:59:57,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:59:57,060 INFO L225 Difference]: With dead ends: 2992 [2020-01-16 18:59:57,060 INFO L226 Difference]: Without dead ends: 2970 [2020-01-16 18:59:57,060 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:59:57,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2970 states. [2020-01-16 18:59:57,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2970 to 1576. [2020-01-16 18:59:57,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:59:57,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7080 transitions. [2020-01-16 18:59:57,127 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7080 transitions. Word has length 28 [2020-01-16 18:59:57,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:59:57,127 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7080 transitions. [2020-01-16 18:59:57,127 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:59:57,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7080 transitions. [2020-01-16 18:59:57,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:59:57,130 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:59:57,130 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:59:57,130 INFO L426 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:59:57,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:59:57,131 INFO L82 PathProgramCache]: Analyzing trace with hash 505070794, now seen corresponding path program 35 times [2020-01-16 18:59:57,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:59:57,131 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876382312] [2020-01-16 18:59:57,131 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:59:57,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:59:57,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:59:57,731 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876382312] [2020-01-16 18:59:57,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:59:57,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:59:57,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965654823] [2020-01-16 18:59:57,732 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:59:57,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:59:57,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:59:57,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:59:57,733 INFO L87 Difference]: Start difference. First operand 1576 states and 7080 transitions. Second operand 11 states. [2020-01-16 18:59:57,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:59:57,929 INFO L93 Difference]: Finished difference Result 2993 states and 11889 transitions. [2020-01-16 18:59:57,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:59:57,930 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:59:57,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:59:57,937 INFO L225 Difference]: With dead ends: 2993 [2020-01-16 18:59:57,938 INFO L226 Difference]: Without dead ends: 2977 [2020-01-16 18:59:57,938 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:59:57,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2977 states. [2020-01-16 18:59:58,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2977 to 1582. [2020-01-16 18:59:58,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 18:59:58,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7091 transitions. [2020-01-16 18:59:58,005 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7091 transitions. Word has length 28 [2020-01-16 18:59:58,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:59:58,005 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7091 transitions. [2020-01-16 18:59:58,005 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:59:58,005 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7091 transitions. [2020-01-16 18:59:58,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:59:58,008 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:59:58,008 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:59:58,008 INFO L426 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:59:58,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:59:58,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1423020984, now seen corresponding path program 36 times [2020-01-16 18:59:58,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:59:58,009 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356640322] [2020-01-16 18:59:58,009 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:59:58,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:59:58,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:59:58,564 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356640322] [2020-01-16 18:59:58,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:59:58,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:59:58,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507613839] [2020-01-16 18:59:58,564 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:59:58,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:59:58,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:59:58,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:59:58,565 INFO L87 Difference]: Start difference. First operand 1582 states and 7091 transitions. Second operand 11 states. [2020-01-16 18:59:58,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:59:58,834 INFO L93 Difference]: Finished difference Result 2994 states and 11885 transitions. [2020-01-16 18:59:58,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:59:58,834 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:59:58,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:59:58,842 INFO L225 Difference]: With dead ends: 2994 [2020-01-16 18:59:58,842 INFO L226 Difference]: Without dead ends: 2966 [2020-01-16 18:59:58,843 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:59:58,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2966 states. [2020-01-16 18:59:58,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2966 to 1571. [2020-01-16 18:59:58,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:59:58,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7066 transitions. [2020-01-16 18:59:58,909 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7066 transitions. Word has length 28 [2020-01-16 18:59:58,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:59:58,909 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7066 transitions. [2020-01-16 18:59:58,909 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:59:58,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7066 transitions. [2020-01-16 18:59:58,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:59:58,912 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:59:58,912 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:59:58,912 INFO L426 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:59:58,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:59:58,912 INFO L82 PathProgramCache]: Analyzing trace with hash -231754376, now seen corresponding path program 37 times [2020-01-16 18:59:58,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:59:58,912 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861570009] [2020-01-16 18:59:58,913 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:59:58,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:59:59,492 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:59:59,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:59:59,499 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861570009] [2020-01-16 18:59:59,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:59:59,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:59:59,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107985348] [2020-01-16 18:59:59,500 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:59:59,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:59:59,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:59:59,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:59:59,500 INFO L87 Difference]: Start difference. First operand 1571 states and 7066 transitions. Second operand 11 states. [2020-01-16 18:59:59,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:59:59,761 INFO L93 Difference]: Finished difference Result 3002 states and 11911 transitions. [2020-01-16 18:59:59,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:59:59,761 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:59:59,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:59:59,768 INFO L225 Difference]: With dead ends: 3002 [2020-01-16 18:59:59,768 INFO L226 Difference]: Without dead ends: 2987 [2020-01-16 18:59:59,768 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:59:59,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2987 states. [2020-01-16 18:59:59,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2987 to 1583. [2020-01-16 18:59:59,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:59:59,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7099 transitions. [2020-01-16 18:59:59,836 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7099 transitions. Word has length 28 [2020-01-16 18:59:59,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:59:59,836 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7099 transitions. [2020-01-16 18:59:59,836 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:59:59,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7099 transitions. [2020-01-16 18:59:59,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:59:59,838 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:59:59,838 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:59:59,839 INFO L426 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 18:59:59,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:59:59,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1257650620, now seen corresponding path program 38 times [2020-01-16 18:59:59,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:59:59,839 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172270043] [2020-01-16 18:59:59,839 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:59:59,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:00,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:00,447 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172270043] [2020-01-16 19:00:00,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:00,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:00,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935857795] [2020-01-16 19:00:00,448 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:00,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:00,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:00,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:00,448 INFO L87 Difference]: Start difference. First operand 1583 states and 7099 transitions. Second operand 11 states. [2020-01-16 19:00:00,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:00,618 INFO L93 Difference]: Finished difference Result 3007 states and 11915 transitions. [2020-01-16 19:00:00,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:00,619 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:00,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:00,626 INFO L225 Difference]: With dead ends: 3007 [2020-01-16 19:00:00,626 INFO L226 Difference]: Without dead ends: 2981 [2020-01-16 19:00:00,627 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:00,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2981 states. [2020-01-16 19:00:00,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2981 to 1577. [2020-01-16 19:00:00,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 19:00:00,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7082 transitions. [2020-01-16 19:00:00,693 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7082 transitions. Word has length 28 [2020-01-16 19:00:00,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:00,694 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7082 transitions. [2020-01-16 19:00:00,694 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:00,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7082 transitions. [2020-01-16 19:00:00,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:00,696 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:00,696 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:00,696 INFO L426 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:00,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:00,696 INFO L82 PathProgramCache]: Analyzing trace with hash 843956780, now seen corresponding path program 39 times [2020-01-16 19:00:00,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:00,697 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844928768] [2020-01-16 19:00:00,697 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:00,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:01,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:01,234 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844928768] [2020-01-16 19:00:01,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:01,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:01,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021297079] [2020-01-16 19:00:01,235 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:01,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:01,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:01,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:01,235 INFO L87 Difference]: Start difference. First operand 1577 states and 7082 transitions. Second operand 11 states. [2020-01-16 19:00:01,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:01,431 INFO L93 Difference]: Finished difference Result 2998 states and 11898 transitions. [2020-01-16 19:00:01,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:01,432 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:01,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:01,439 INFO L225 Difference]: With dead ends: 2998 [2020-01-16 19:00:01,439 INFO L226 Difference]: Without dead ends: 2983 [2020-01-16 19:00:01,440 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:01,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2983 states. [2020-01-16 19:00:01,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2983 to 1582. [2020-01-16 19:00:01,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 19:00:01,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7091 transitions. [2020-01-16 19:00:01,507 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7091 transitions. Word has length 28 [2020-01-16 19:00:01,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:01,507 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7091 transitions. [2020-01-16 19:00:01,507 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:01,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7091 transitions. [2020-01-16 19:00:01,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:01,509 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:01,509 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:01,510 INFO L426 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:01,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:01,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1788357828, now seen corresponding path program 40 times [2020-01-16 19:00:01,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:01,510 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514604015] [2020-01-16 19:00:01,510 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:01,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:02,043 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 19:00:02,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:02,049 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514604015] [2020-01-16 19:00:02,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:02,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:02,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700548428] [2020-01-16 19:00:02,050 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:02,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:02,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:02,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:02,051 INFO L87 Difference]: Start difference. First operand 1582 states and 7091 transitions. Second operand 11 states. [2020-01-16 19:00:02,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:02,265 INFO L93 Difference]: Finished difference Result 3000 states and 11897 transitions. [2020-01-16 19:00:02,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:02,266 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:02,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:02,273 INFO L225 Difference]: With dead ends: 3000 [2020-01-16 19:00:02,273 INFO L226 Difference]: Without dead ends: 2978 [2020-01-16 19:00:02,273 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:02,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2978 states. [2020-01-16 19:00:02,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2978 to 1577. [2020-01-16 19:00:02,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 19:00:02,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7077 transitions. [2020-01-16 19:00:02,340 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7077 transitions. Word has length 28 [2020-01-16 19:00:02,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:02,340 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7077 transitions. [2020-01-16 19:00:02,340 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:02,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7077 transitions. [2020-01-16 19:00:02,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:02,342 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:02,342 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:02,342 INFO L426 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:02,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:02,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1260276396, now seen corresponding path program 41 times [2020-01-16 19:00:02,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:02,343 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738268314] [2020-01-16 19:00:02,343 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:02,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:02,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:02,886 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738268314] [2020-01-16 19:00:02,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:02,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:02,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752139163] [2020-01-16 19:00:02,887 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:02,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:02,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:02,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:02,888 INFO L87 Difference]: Start difference. First operand 1577 states and 7077 transitions. Second operand 11 states. [2020-01-16 19:00:03,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:03,122 INFO L93 Difference]: Finished difference Result 3011 states and 11919 transitions. [2020-01-16 19:00:03,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:03,123 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:03,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:03,131 INFO L225 Difference]: With dead ends: 3011 [2020-01-16 19:00:03,131 INFO L226 Difference]: Without dead ends: 2991 [2020-01-16 19:00:03,132 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:03,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2991 states. [2020-01-16 19:00:03,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2991 to 1585. [2020-01-16 19:00:03,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 19:00:03,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7091 transitions. [2020-01-16 19:00:03,205 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7091 transitions. Word has length 28 [2020-01-16 19:00:03,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:03,205 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7091 transitions. [2020-01-16 19:00:03,205 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:03,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7091 transitions. [2020-01-16 19:00:03,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:03,208 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:03,208 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:03,209 INFO L426 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:03,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:03,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1433524088, now seen corresponding path program 42 times [2020-01-16 19:00:03,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:03,209 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250662675] [2020-01-16 19:00:03,209 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:03,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:03,798 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 19:00:03,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:03,805 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250662675] [2020-01-16 19:00:03,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:03,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:03,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881527402] [2020-01-16 19:00:03,806 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:03,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:03,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:03,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:03,806 INFO L87 Difference]: Start difference. First operand 1585 states and 7091 transitions. Second operand 11 states. [2020-01-16 19:00:04,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:04,082 INFO L93 Difference]: Finished difference Result 3008 states and 11906 transitions. [2020-01-16 19:00:04,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:04,083 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:04,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:04,090 INFO L225 Difference]: With dead ends: 3008 [2020-01-16 19:00:04,090 INFO L226 Difference]: Without dead ends: 2977 [2020-01-16 19:00:04,090 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:04,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2977 states. [2020-01-16 19:00:04,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2977 to 1571. [2020-01-16 19:00:04,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:00:04,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7060 transitions. [2020-01-16 19:00:04,157 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7060 transitions. Word has length 28 [2020-01-16 19:00:04,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:04,158 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7060 transitions. [2020-01-16 19:00:04,158 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:04,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7060 transitions. [2020-01-16 19:00:04,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:04,160 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:04,160 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:04,160 INFO L426 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:04,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:04,161 INFO L82 PathProgramCache]: Analyzing trace with hash 523451226, now seen corresponding path program 43 times [2020-01-16 19:00:04,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:04,161 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75924301] [2020-01-16 19:00:04,161 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:04,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:04,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:04,714 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75924301] [2020-01-16 19:00:04,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:04,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:04,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98198635] [2020-01-16 19:00:04,715 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:04,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:04,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:04,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:04,715 INFO L87 Difference]: Start difference. First operand 1571 states and 7060 transitions. Second operand 11 states. [2020-01-16 19:00:04,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:04,977 INFO L93 Difference]: Finished difference Result 3009 states and 11924 transitions. [2020-01-16 19:00:04,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:04,977 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:04,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:04,985 INFO L225 Difference]: With dead ends: 3009 [2020-01-16 19:00:04,985 INFO L226 Difference]: Without dead ends: 2993 [2020-01-16 19:00:04,985 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:05,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2993 states. [2020-01-16 19:00:05,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2993 to 1585. [2020-01-16 19:00:05,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 19:00:05,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7099 transitions. [2020-01-16 19:00:05,055 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7099 transitions. Word has length 28 [2020-01-16 19:00:05,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:05,055 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7099 transitions. [2020-01-16 19:00:05,055 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:05,056 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7099 transitions. [2020-01-16 19:00:05,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:05,058 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:05,059 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:05,059 INFO L426 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:05,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:05,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1268153724, now seen corresponding path program 44 times [2020-01-16 19:00:05,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:05,059 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905770720] [2020-01-16 19:00:05,059 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:05,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:05,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:05,616 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905770720] [2020-01-16 19:00:05,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:05,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:05,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6214957] [2020-01-16 19:00:05,617 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:05,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:05,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:05,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:05,617 INFO L87 Difference]: Start difference. First operand 1585 states and 7099 transitions. Second operand 11 states. [2020-01-16 19:00:05,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:05,852 INFO L93 Difference]: Finished difference Result 3013 states and 11925 transitions. [2020-01-16 19:00:05,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:05,853 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:05,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:05,860 INFO L225 Difference]: With dead ends: 3013 [2020-01-16 19:00:05,860 INFO L226 Difference]: Without dead ends: 2986 [2020-01-16 19:00:05,861 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:05,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2986 states. [2020-01-16 19:00:05,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2986 to 1578. [2020-01-16 19:00:05,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 19:00:05,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7079 transitions. [2020-01-16 19:00:05,929 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7079 transitions. Word has length 28 [2020-01-16 19:00:05,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:05,929 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7079 transitions. [2020-01-16 19:00:05,929 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:05,929 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7079 transitions. [2020-01-16 19:00:05,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:05,932 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:05,932 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:05,932 INFO L426 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:05,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:05,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1599162382, now seen corresponding path program 45 times [2020-01-16 19:00:05,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:05,932 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391775179] [2020-01-16 19:00:05,932 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:05,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:06,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:06,510 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391775179] [2020-01-16 19:00:06,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:06,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:06,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579902984] [2020-01-16 19:00:06,511 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:06,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:06,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:06,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:06,511 INFO L87 Difference]: Start difference. First operand 1578 states and 7079 transitions. Second operand 11 states. [2020-01-16 19:00:06,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:06,700 INFO L93 Difference]: Finished difference Result 3005 states and 11910 transitions. [2020-01-16 19:00:06,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:06,701 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:06,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:06,708 INFO L225 Difference]: With dead ends: 3005 [2020-01-16 19:00:06,708 INFO L226 Difference]: Without dead ends: 2989 [2020-01-16 19:00:06,708 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:06,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2020-01-16 19:00:06,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 1584. [2020-01-16 19:00:06,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1584 states. [2020-01-16 19:00:06,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 7090 transitions. [2020-01-16 19:00:06,775 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 7090 transitions. Word has length 28 [2020-01-16 19:00:06,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:06,775 INFO L478 AbstractCegarLoop]: Abstraction has 1584 states and 7090 transitions. [2020-01-16 19:00:06,775 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:06,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 7090 transitions. [2020-01-16 19:00:06,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:06,778 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:06,778 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:06,778 INFO L426 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:06,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:06,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1777854724, now seen corresponding path program 46 times [2020-01-16 19:00:06,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:06,778 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498358286] [2020-01-16 19:00:06,779 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:06,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:07,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:07,330 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498358286] [2020-01-16 19:00:07,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:07,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:07,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281352095] [2020-01-16 19:00:07,330 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:07,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:07,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:07,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:07,331 INFO L87 Difference]: Start difference. First operand 1584 states and 7090 transitions. Second operand 11 states. [2020-01-16 19:00:07,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:07,497 INFO L93 Difference]: Finished difference Result 3006 states and 11906 transitions. [2020-01-16 19:00:07,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:07,498 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:07,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:07,505 INFO L225 Difference]: With dead ends: 3006 [2020-01-16 19:00:07,506 INFO L226 Difference]: Without dead ends: 2983 [2020-01-16 19:00:07,506 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:07,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2983 states. [2020-01-16 19:00:07,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2983 to 1578. [2020-01-16 19:00:07,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 19:00:07,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7073 transitions. [2020-01-16 19:00:07,580 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7073 transitions. Word has length 28 [2020-01-16 19:00:07,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:07,580 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7073 transitions. [2020-01-16 19:00:07,580 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:07,580 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7073 transitions. [2020-01-16 19:00:07,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:07,584 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:07,584 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:07,584 INFO L426 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:07,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:07,585 INFO L82 PathProgramCache]: Analyzing trace with hash -340161458, now seen corresponding path program 47 times [2020-01-16 19:00:07,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:07,585 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508773317] [2020-01-16 19:00:07,585 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:07,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:08,079 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 31 [2020-01-16 19:00:08,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:08,199 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508773317] [2020-01-16 19:00:08,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:08,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:08,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950271048] [2020-01-16 19:00:08,200 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:08,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:08,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:08,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:08,200 INFO L87 Difference]: Start difference. First operand 1578 states and 7073 transitions. Second operand 11 states. [2020-01-16 19:00:08,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:08,346 INFO L93 Difference]: Finished difference Result 3015 states and 11923 transitions. [2020-01-16 19:00:08,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:08,347 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:08,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:08,354 INFO L225 Difference]: With dead ends: 3015 [2020-01-16 19:00:08,354 INFO L226 Difference]: Without dead ends: 2995 [2020-01-16 19:00:08,355 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:08,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2995 states. [2020-01-16 19:00:08,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2995 to 1586. [2020-01-16 19:00:08,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1586 states. [2020-01-16 19:00:08,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 7087 transitions. [2020-01-16 19:00:08,421 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 7087 transitions. Word has length 28 [2020-01-16 19:00:08,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:08,422 INFO L478 AbstractCegarLoop]: Abstraction has 1586 states and 7087 transitions. [2020-01-16 19:00:08,422 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:08,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 7087 transitions. [2020-01-16 19:00:08,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:08,424 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:08,424 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:08,424 INFO L426 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:08,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:08,424 INFO L82 PathProgramCache]: Analyzing trace with hash -166913766, now seen corresponding path program 48 times [2020-01-16 19:00:08,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:08,425 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393455169] [2020-01-16 19:00:08,425 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:08,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:08,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:08,970 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393455169] [2020-01-16 19:00:08,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:08,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:08,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903726141] [2020-01-16 19:00:08,970 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:08,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:08,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:08,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:08,971 INFO L87 Difference]: Start difference. First operand 1586 states and 7087 transitions. Second operand 11 states. [2020-01-16 19:00:09,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:09,154 INFO L93 Difference]: Finished difference Result 3012 states and 11910 transitions. [2020-01-16 19:00:09,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:09,154 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:09,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:09,162 INFO L225 Difference]: With dead ends: 3012 [2020-01-16 19:00:09,162 INFO L226 Difference]: Without dead ends: 2974 [2020-01-16 19:00:09,162 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:09,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2974 states. [2020-01-16 19:00:09,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2974 to 1565. [2020-01-16 19:00:09,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 19:00:09,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7043 transitions. [2020-01-16 19:00:09,229 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7043 transitions. Word has length 28 [2020-01-16 19:00:09,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:09,230 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7043 transitions. [2020-01-16 19:00:09,230 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:09,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7043 transitions. [2020-01-16 19:00:09,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:09,232 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:09,232 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:09,232 INFO L426 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:09,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:09,232 INFO L82 PathProgramCache]: Analyzing trace with hash 15547412, now seen corresponding path program 49 times [2020-01-16 19:00:09,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:09,233 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256459728] [2020-01-16 19:00:09,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:09,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:09,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:09,798 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256459728] [2020-01-16 19:00:09,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:09,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:09,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743750101] [2020-01-16 19:00:09,798 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:09,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:09,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:09,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:09,799 INFO L87 Difference]: Start difference. First operand 1565 states and 7043 transitions. Second operand 11 states. [2020-01-16 19:00:09,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:09,984 INFO L93 Difference]: Finished difference Result 2981 states and 11870 transitions. [2020-01-16 19:00:09,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:09,985 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:09,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:09,993 INFO L225 Difference]: With dead ends: 2981 [2020-01-16 19:00:09,993 INFO L226 Difference]: Without dead ends: 2966 [2020-01-16 19:00:09,993 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:10,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2966 states. [2020-01-16 19:00:10,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2966 to 1580. [2020-01-16 19:00:10,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 19:00:10,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7095 transitions. [2020-01-16 19:00:10,060 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7095 transitions. Word has length 28 [2020-01-16 19:00:10,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:10,060 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7095 transitions. [2020-01-16 19:00:10,060 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:10,060 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7095 transitions. [2020-01-16 19:00:10,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:10,063 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:10,063 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:10,063 INFO L426 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:10,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:10,063 INFO L82 PathProgramCache]: Analyzing trace with hash 760249910, now seen corresponding path program 50 times [2020-01-16 19:00:10,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:10,063 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806460316] [2020-01-16 19:00:10,064 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:10,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:10,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:10,608 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806460316] [2020-01-16 19:00:10,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:10,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:10,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632051833] [2020-01-16 19:00:10,609 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:10,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:10,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:10,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:10,609 INFO L87 Difference]: Start difference. First operand 1580 states and 7095 transitions. Second operand 11 states. [2020-01-16 19:00:10,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:10,784 INFO L93 Difference]: Finished difference Result 2982 states and 11867 transitions. [2020-01-16 19:00:10,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:10,784 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:10,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:10,792 INFO L225 Difference]: With dead ends: 2982 [2020-01-16 19:00:10,792 INFO L226 Difference]: Without dead ends: 2961 [2020-01-16 19:00:10,793 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:10,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2020-01-16 19:00:10,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 1575. [2020-01-16 19:00:10,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:00:10,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7081 transitions. [2020-01-16 19:00:10,866 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7081 transitions. Word has length 28 [2020-01-16 19:00:10,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:10,866 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7081 transitions. [2020-01-16 19:00:10,867 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:10,867 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7081 transitions. [2020-01-16 19:00:10,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:10,869 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:10,869 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:10,870 INFO L426 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:10,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:10,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1057537968, now seen corresponding path program 51 times [2020-01-16 19:00:10,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:10,870 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527952232] [2020-01-16 19:00:10,870 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:10,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:11,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:11,437 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527952232] [2020-01-16 19:00:11,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:11,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:11,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621227195] [2020-01-16 19:00:11,437 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:11,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:11,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:11,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:11,438 INFO L87 Difference]: Start difference. First operand 1575 states and 7081 transitions. Second operand 11 states. [2020-01-16 19:00:11,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:11,611 INFO L93 Difference]: Finished difference Result 2983 states and 11869 transitions. [2020-01-16 19:00:11,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:11,611 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:11,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:11,618 INFO L225 Difference]: With dead ends: 2983 [2020-01-16 19:00:11,619 INFO L226 Difference]: Without dead ends: 2968 [2020-01-16 19:00:11,619 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:11,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2968 states. [2020-01-16 19:00:11,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2968 to 1580. [2020-01-16 19:00:11,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 19:00:11,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7090 transitions. [2020-01-16 19:00:11,687 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7090 transitions. Word has length 28 [2020-01-16 19:00:11,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:11,687 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7090 transitions. [2020-01-16 19:00:11,687 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:11,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7090 transitions. [2020-01-16 19:00:11,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:11,690 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:11,690 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:11,690 INFO L426 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:11,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:11,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1176569526, now seen corresponding path program 52 times [2020-01-16 19:00:11,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:11,690 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797574558] [2020-01-16 19:00:11,690 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:11,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:12,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:12,255 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797574558] [2020-01-16 19:00:12,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:12,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:12,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515375797] [2020-01-16 19:00:12,256 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:12,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:12,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:12,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:12,256 INFO L87 Difference]: Start difference. First operand 1580 states and 7090 transitions. Second operand 11 states. [2020-01-16 19:00:12,449 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 31 [2020-01-16 19:00:12,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:12,468 INFO L93 Difference]: Finished difference Result 2986 states and 11870 transitions. [2020-01-16 19:00:12,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:12,469 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:12,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:12,477 INFO L225 Difference]: With dead ends: 2986 [2020-01-16 19:00:12,477 INFO L226 Difference]: Without dead ends: 2963 [2020-01-16 19:00:12,477 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:12,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2963 states. [2020-01-16 19:00:12,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2963 to 1575. [2020-01-16 19:00:12,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:00:12,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7076 transitions. [2020-01-16 19:00:12,544 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7076 transitions. Word has length 28 [2020-01-16 19:00:12,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:12,544 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7076 transitions. [2020-01-16 19:00:12,544 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:12,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7076 transitions. [2020-01-16 19:00:12,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:12,547 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:12,547 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:12,547 INFO L426 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:12,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:12,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1298105488, now seen corresponding path program 53 times [2020-01-16 19:00:12,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:12,548 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355518596] [2020-01-16 19:00:12,548 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:12,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:13,088 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 19:00:13,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:13,095 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355518596] [2020-01-16 19:00:13,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:13,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:13,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583719983] [2020-01-16 19:00:13,096 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:13,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:13,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:13,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:13,096 INFO L87 Difference]: Start difference. First operand 1575 states and 7076 transitions. Second operand 11 states. [2020-01-16 19:00:13,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:13,275 INFO L93 Difference]: Finished difference Result 2986 states and 11871 transitions. [2020-01-16 19:00:13,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:13,276 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:13,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:13,283 INFO L225 Difference]: With dead ends: 2986 [2020-01-16 19:00:13,283 INFO L226 Difference]: Without dead ends: 2970 [2020-01-16 19:00:13,283 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:13,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2970 states. [2020-01-16 19:00:13,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2970 to 1581. [2020-01-16 19:00:13,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 19:00:13,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7087 transitions. [2020-01-16 19:00:13,351 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7087 transitions. Word has length 28 [2020-01-16 19:00:13,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:13,351 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7087 transitions. [2020-01-16 19:00:13,351 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:13,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7087 transitions. [2020-01-16 19:00:13,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:13,354 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:13,354 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:13,354 INFO L426 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:13,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:13,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1507456812, now seen corresponding path program 54 times [2020-01-16 19:00:13,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:13,354 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877135841] [2020-01-16 19:00:13,354 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:13,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:13,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:13,880 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877135841] [2020-01-16 19:00:13,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:13,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:13,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457227712] [2020-01-16 19:00:13,881 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:13,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:13,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:13,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:13,881 INFO L87 Difference]: Start difference. First operand 1581 states and 7087 transitions. Second operand 11 states. [2020-01-16 19:00:14,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:14,054 INFO L93 Difference]: Finished difference Result 2988 states and 11869 transitions. [2020-01-16 19:00:14,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:14,055 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:14,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:14,062 INFO L225 Difference]: With dead ends: 2988 [2020-01-16 19:00:14,062 INFO L226 Difference]: Without dead ends: 2959 [2020-01-16 19:00:14,062 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:14,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2959 states. [2020-01-16 19:00:14,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2959 to 1570. [2020-01-16 19:00:14,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 19:00:14,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7062 transitions. [2020-01-16 19:00:14,131 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7062 transitions. Word has length 28 [2020-01-16 19:00:14,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:14,131 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7062 transitions. [2020-01-16 19:00:14,131 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:14,131 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7062 transitions. [2020-01-16 19:00:14,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:14,134 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:14,134 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:14,134 INFO L426 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:14,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:14,134 INFO L82 PathProgramCache]: Analyzing trace with hash 603292734, now seen corresponding path program 55 times [2020-01-16 19:00:14,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:14,135 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460906328] [2020-01-16 19:00:14,135 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:14,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:14,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:14,720 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460906328] [2020-01-16 19:00:14,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:14,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:14,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018292125] [2020-01-16 19:00:14,721 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:14,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:14,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:14,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:14,722 INFO L87 Difference]: Start difference. First operand 1570 states and 7062 transitions. Second operand 11 states. [2020-01-16 19:00:14,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:14,896 INFO L93 Difference]: Finished difference Result 2980 states and 11863 transitions. [2020-01-16 19:00:14,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:14,897 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:14,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:14,904 INFO L225 Difference]: With dead ends: 2980 [2020-01-16 19:00:14,905 INFO L226 Difference]: Without dead ends: 2965 [2020-01-16 19:00:14,905 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:14,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2965 states. [2020-01-16 19:00:14,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2965 to 1580. [2020-01-16 19:00:14,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 19:00:14,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7090 transitions. [2020-01-16 19:00:14,972 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7090 transitions. Word has length 28 [2020-01-16 19:00:14,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:14,972 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7090 transitions. [2020-01-16 19:00:14,972 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:14,972 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7090 transitions. [2020-01-16 19:00:14,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:14,975 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:14,975 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:14,975 INFO L426 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:14,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:14,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1347995232, now seen corresponding path program 56 times [2020-01-16 19:00:14,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:14,976 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924968180] [2020-01-16 19:00:14,976 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:14,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:15,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:15,531 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924968180] [2020-01-16 19:00:15,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:15,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:15,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102002095] [2020-01-16 19:00:15,532 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:15,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:15,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:15,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:15,533 INFO L87 Difference]: Start difference. First operand 1580 states and 7090 transitions. Second operand 11 states. [2020-01-16 19:00:15,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:15,725 INFO L93 Difference]: Finished difference Result 2981 states and 11860 transitions. [2020-01-16 19:00:15,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:15,726 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:15,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:15,733 INFO L225 Difference]: With dead ends: 2981 [2020-01-16 19:00:15,734 INFO L226 Difference]: Without dead ends: 2960 [2020-01-16 19:00:15,734 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:15,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2960 states. [2020-01-16 19:00:15,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2960 to 1575. [2020-01-16 19:00:15,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:00:15,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7076 transitions. [2020-01-16 19:00:15,801 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7076 transitions. Word has length 28 [2020-01-16 19:00:15,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:15,801 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7076 transitions. [2020-01-16 19:00:15,801 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:15,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7076 transitions. [2020-01-16 19:00:15,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:15,804 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:15,804 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:15,804 INFO L426 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:15,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:15,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1005022448, now seen corresponding path program 57 times [2020-01-16 19:00:15,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:15,805 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153933462] [2020-01-16 19:00:15,805 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:15,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:16,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:16,351 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153933462] [2020-01-16 19:00:16,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:16,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:16,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167269915] [2020-01-16 19:00:16,352 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:16,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:16,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:16,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:16,353 INFO L87 Difference]: Start difference. First operand 1575 states and 7076 transitions. Second operand 11 states. [2020-01-16 19:00:16,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:16,629 INFO L93 Difference]: Finished difference Result 2981 states and 11860 transitions. [2020-01-16 19:00:16,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:16,629 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:16,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:16,638 INFO L225 Difference]: With dead ends: 2981 [2020-01-16 19:00:16,638 INFO L226 Difference]: Without dead ends: 2966 [2020-01-16 19:00:16,638 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:16,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2966 states. [2020-01-16 19:00:16,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2966 to 1580. [2020-01-16 19:00:16,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 19:00:16,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7085 transitions. [2020-01-16 19:00:16,830 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7085 transitions. Word has length 28 [2020-01-16 19:00:16,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:16,830 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7085 transitions. [2020-01-16 19:00:16,830 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:16,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7085 transitions. [2020-01-16 19:00:16,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:16,833 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:16,833 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:16,833 INFO L426 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:16,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:16,833 INFO L82 PathProgramCache]: Analyzing trace with hash 657630240, now seen corresponding path program 58 times [2020-01-16 19:00:16,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:16,834 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595968685] [2020-01-16 19:00:16,834 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:16,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:17,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:17,389 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595968685] [2020-01-16 19:00:17,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:17,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:17,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753343900] [2020-01-16 19:00:17,390 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:17,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:17,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:17,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:17,390 INFO L87 Difference]: Start difference. First operand 1580 states and 7085 transitions. Second operand 11 states. [2020-01-16 19:00:17,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:17,566 INFO L93 Difference]: Finished difference Result 2983 states and 11859 transitions. [2020-01-16 19:00:17,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:17,567 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:17,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:17,575 INFO L225 Difference]: With dead ends: 2983 [2020-01-16 19:00:17,575 INFO L226 Difference]: Without dead ends: 2961 [2020-01-16 19:00:17,575 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:17,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2020-01-16 19:00:17,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 1575. [2020-01-16 19:00:17,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:00:17,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7071 transitions. [2020-01-16 19:00:17,643 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7071 transitions. Word has length 28 [2020-01-16 19:00:17,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:17,644 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7071 transitions. [2020-01-16 19:00:17,644 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:17,644 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7071 transitions. [2020-01-16 19:00:17,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:17,646 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:17,646 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:17,646 INFO L426 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:17,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:17,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1350621008, now seen corresponding path program 59 times [2020-01-16 19:00:17,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:17,647 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535631791] [2020-01-16 19:00:17,647 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:17,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:18,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:18,190 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535631791] [2020-01-16 19:00:18,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:18,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:18,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037309640] [2020-01-16 19:00:18,191 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:18,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:18,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:18,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:18,191 INFO L87 Difference]: Start difference. First operand 1575 states and 7071 transitions. Second operand 11 states. [2020-01-16 19:00:18,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:18,374 INFO L93 Difference]: Finished difference Result 2984 states and 11862 transitions. [2020-01-16 19:00:18,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:18,375 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:18,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:18,382 INFO L225 Difference]: With dead ends: 2984 [2020-01-16 19:00:18,383 INFO L226 Difference]: Without dead ends: 2968 [2020-01-16 19:00:18,383 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:18,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2968 states. [2020-01-16 19:00:18,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2968 to 1581. [2020-01-16 19:00:18,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 19:00:18,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7082 transitions. [2020-01-16 19:00:18,456 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7082 transitions. Word has length 28 [2020-01-16 19:00:18,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:18,456 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7082 transitions. [2020-01-16 19:00:18,456 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:18,456 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7082 transitions. [2020-01-16 19:00:18,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:18,459 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:18,459 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:18,459 INFO L426 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:18,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:18,460 INFO L82 PathProgramCache]: Analyzing trace with hash -2026396098, now seen corresponding path program 60 times [2020-01-16 19:00:18,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:18,460 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178029439] [2020-01-16 19:00:18,460 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:18,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:19,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:19,008 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178029439] [2020-01-16 19:00:19,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:19,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:19,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994628263] [2020-01-16 19:00:19,009 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:19,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:19,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:19,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:19,009 INFO L87 Difference]: Start difference. First operand 1581 states and 7082 transitions. Second operand 11 states. [2020-01-16 19:00:19,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:19,194 INFO L93 Difference]: Finished difference Result 2985 states and 11858 transitions. [2020-01-16 19:00:19,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:19,194 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:19,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:19,202 INFO L225 Difference]: With dead ends: 2985 [2020-01-16 19:00:19,202 INFO L226 Difference]: Without dead ends: 2957 [2020-01-16 19:00:19,203 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:19,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2957 states. [2020-01-16 19:00:19,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2957 to 1570. [2020-01-16 19:00:19,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 19:00:19,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7057 transitions. [2020-01-16 19:00:19,269 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7057 transitions. Word has length 28 [2020-01-16 19:00:19,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:19,269 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7057 transitions. [2020-01-16 19:00:19,269 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:19,269 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7057 transitions. [2020-01-16 19:00:19,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:19,272 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:19,272 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:19,272 INFO L426 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:19,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:19,272 INFO L82 PathProgramCache]: Analyzing trace with hash 624298942, now seen corresponding path program 61 times [2020-01-16 19:00:19,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:19,272 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451564293] [2020-01-16 19:00:19,272 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:19,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:19,800 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 19:00:19,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:19,807 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451564293] [2020-01-16 19:00:19,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:19,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:19,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426105250] [2020-01-16 19:00:19,808 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:19,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:19,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:19,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:19,808 INFO L87 Difference]: Start difference. First operand 1570 states and 7057 transitions. Second operand 11 states. [2020-01-16 19:00:19,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:19,990 INFO L93 Difference]: Finished difference Result 2985 states and 11869 transitions. [2020-01-16 19:00:19,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:19,991 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:19,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:19,998 INFO L225 Difference]: With dead ends: 2985 [2020-01-16 19:00:19,998 INFO L226 Difference]: Without dead ends: 2970 [2020-01-16 19:00:19,998 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:20,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2970 states. [2020-01-16 19:00:20,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2970 to 1580. [2020-01-16 19:00:20,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 19:00:20,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7085 transitions. [2020-01-16 19:00:20,065 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7085 transitions. Word has length 28 [2020-01-16 19:00:20,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:20,065 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7085 transitions. [2020-01-16 19:00:20,065 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:20,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7085 transitions. [2020-01-16 19:00:20,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:20,067 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:20,068 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:20,068 INFO L426 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:20,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:20,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1436560860, now seen corresponding path program 62 times [2020-01-16 19:00:20,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:20,068 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507669434] [2020-01-16 19:00:20,068 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:20,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:20,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:20,618 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507669434] [2020-01-16 19:00:20,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:20,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:20,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650373991] [2020-01-16 19:00:20,619 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:20,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:20,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:20,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:20,620 INFO L87 Difference]: Start difference. First operand 1580 states and 7085 transitions. Second operand 11 states. [2020-01-16 19:00:20,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:20,802 INFO L93 Difference]: Finished difference Result 2988 states and 11870 transitions. [2020-01-16 19:00:20,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:20,803 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:20,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:20,810 INFO L225 Difference]: With dead ends: 2988 [2020-01-16 19:00:20,810 INFO L226 Difference]: Without dead ends: 2965 [2020-01-16 19:00:20,810 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:20,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2965 states. [2020-01-16 19:00:20,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2965 to 1575. [2020-01-16 19:00:20,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:00:20,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7071 transitions. [2020-01-16 19:00:20,877 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7071 transitions. Word has length 28 [2020-01-16 19:00:20,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:20,877 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7071 transitions. [2020-01-16 19:00:20,877 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:20,877 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7071 transitions. [2020-01-16 19:00:20,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:20,879 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:20,879 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:20,880 INFO L426 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:20,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:20,880 INFO L82 PathProgramCache]: Analyzing trace with hash 89069140, now seen corresponding path program 63 times [2020-01-16 19:00:20,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:20,880 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269759804] [2020-01-16 19:00:20,880 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:20,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:21,478 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 19:00:21,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:21,486 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269759804] [2020-01-16 19:00:21,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:21,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:21,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815576046] [2020-01-16 19:00:21,486 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:21,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:21,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:21,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:21,487 INFO L87 Difference]: Start difference. First operand 1575 states and 7071 transitions. Second operand 11 states. [2020-01-16 19:00:21,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:21,663 INFO L93 Difference]: Finished difference Result 2984 states and 11862 transitions. [2020-01-16 19:00:21,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:21,663 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:21,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:21,671 INFO L225 Difference]: With dead ends: 2984 [2020-01-16 19:00:21,671 INFO L226 Difference]: Without dead ends: 2969 [2020-01-16 19:00:21,671 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:21,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2969 states. [2020-01-16 19:00:21,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2969 to 1580. [2020-01-16 19:00:21,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 19:00:21,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7080 transitions. [2020-01-16 19:00:21,738 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7080 transitions. Word has length 28 [2020-01-16 19:00:21,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:21,738 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7080 transitions. [2020-01-16 19:00:21,738 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:21,738 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7080 transitions. [2020-01-16 19:00:21,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:21,740 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:21,740 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:21,741 INFO L426 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:21,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:21,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1751721828, now seen corresponding path program 64 times [2020-01-16 19:00:21,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:21,741 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581819051] [2020-01-16 19:00:21,741 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:21,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:22,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:22,294 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581819051] [2020-01-16 19:00:22,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:22,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:22,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818124002] [2020-01-16 19:00:22,295 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:22,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:22,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:22,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:22,296 INFO L87 Difference]: Start difference. First operand 1580 states and 7080 transitions. Second operand 11 states. [2020-01-16 19:00:22,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:22,476 INFO L93 Difference]: Finished difference Result 2986 states and 11861 transitions. [2020-01-16 19:00:22,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:22,477 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:22,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:22,484 INFO L225 Difference]: With dead ends: 2986 [2020-01-16 19:00:22,485 INFO L226 Difference]: Without dead ends: 2964 [2020-01-16 19:00:22,485 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:22,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2964 states. [2020-01-16 19:00:22,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2964 to 1575. [2020-01-16 19:00:22,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:00:22,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7066 transitions. [2020-01-16 19:00:22,551 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7066 transitions. Word has length 28 [2020-01-16 19:00:22,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:22,551 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7066 transitions. [2020-01-16 19:00:22,552 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:22,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7066 transitions. [2020-01-16 19:00:22,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:22,554 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:22,554 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:22,554 INFO L426 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:22,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:22,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1433935084, now seen corresponding path program 65 times [2020-01-16 19:00:22,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:22,555 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768049838] [2020-01-16 19:00:22,555 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:22,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:23,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:23,089 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768049838] [2020-01-16 19:00:23,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:23,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:23,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703436558] [2020-01-16 19:00:23,090 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:23,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:23,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:23,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:23,090 INFO L87 Difference]: Start difference. First operand 1575 states and 7066 transitions. Second operand 11 states. [2020-01-16 19:00:23,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:23,268 INFO L93 Difference]: Finished difference Result 2992 states and 11875 transitions. [2020-01-16 19:00:23,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:23,268 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:23,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:23,276 INFO L225 Difference]: With dead ends: 2992 [2020-01-16 19:00:23,276 INFO L226 Difference]: Without dead ends: 2974 [2020-01-16 19:00:23,277 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:23,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2974 states. [2020-01-16 19:00:23,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2974 to 1582. [2020-01-16 19:00:23,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 19:00:23,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7079 transitions. [2020-01-16 19:00:23,343 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7079 transitions. Word has length 28 [2020-01-16 19:00:23,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:23,343 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7079 transitions. [2020-01-16 19:00:23,343 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:23,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7079 transitions. [2020-01-16 19:00:23,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:23,346 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:23,346 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:23,346 INFO L426 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:23,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:23,346 INFO L82 PathProgramCache]: Analyzing trace with hash -2005389890, now seen corresponding path program 66 times [2020-01-16 19:00:23,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:23,347 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938015134] [2020-01-16 19:00:23,347 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:23,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:23,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:23,891 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938015134] [2020-01-16 19:00:23,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:23,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:23,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763576123] [2020-01-16 19:00:23,892 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:23,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:23,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:23,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:23,892 INFO L87 Difference]: Start difference. First operand 1582 states and 7079 transitions. Second operand 11 states. [2020-01-16 19:00:24,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:24,074 INFO L93 Difference]: Finished difference Result 2991 states and 11866 transitions. [2020-01-16 19:00:24,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:24,074 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:24,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:24,081 INFO L225 Difference]: With dead ends: 2991 [2020-01-16 19:00:24,081 INFO L226 Difference]: Without dead ends: 2962 [2020-01-16 19:00:24,082 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:24,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2962 states. [2020-01-16 19:00:24,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2962 to 1570. [2020-01-16 19:00:24,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 19:00:24,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7052 transitions. [2020-01-16 19:00:24,148 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7052 transitions. Word has length 28 [2020-01-16 19:00:24,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:24,148 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7052 transitions. [2020-01-16 19:00:24,148 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:24,148 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7052 transitions. [2020-01-16 19:00:24,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:24,151 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:24,151 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:24,151 INFO L426 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:24,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:24,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1379504544, now seen corresponding path program 67 times [2020-01-16 19:00:24,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:24,151 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265576046] [2020-01-16 19:00:24,151 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:24,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:24,682 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 19:00:24,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:24,690 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265576046] [2020-01-16 19:00:24,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:24,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:24,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439885241] [2020-01-16 19:00:24,690 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:24,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:24,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:24,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:24,691 INFO L87 Difference]: Start difference. First operand 1570 states and 7052 transitions. Second operand 11 states. [2020-01-16 19:00:24,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:24,865 INFO L93 Difference]: Finished difference Result 2992 states and 11883 transitions. [2020-01-16 19:00:24,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:24,866 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:24,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:24,873 INFO L225 Difference]: With dead ends: 2992 [2020-01-16 19:00:24,873 INFO L226 Difference]: Without dead ends: 2976 [2020-01-16 19:00:24,874 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:24,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2976 states. [2020-01-16 19:00:24,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2976 to 1582. [2020-01-16 19:00:24,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 19:00:24,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7086 transitions. [2020-01-16 19:00:24,940 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7086 transitions. Word has length 28 [2020-01-16 19:00:24,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:24,940 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7086 transitions. [2020-01-16 19:00:24,941 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:24,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7086 transitions. [2020-01-16 19:00:24,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:24,943 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:24,943 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:24,943 INFO L426 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:24,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:24,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1426057756, now seen corresponding path program 68 times [2020-01-16 19:00:24,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:24,944 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638853258] [2020-01-16 19:00:24,944 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:24,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:25,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:25,483 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638853258] [2020-01-16 19:00:25,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:25,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:25,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433499509] [2020-01-16 19:00:25,483 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:25,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:25,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:25,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:25,484 INFO L87 Difference]: Start difference. First operand 1582 states and 7086 transitions. Second operand 11 states. [2020-01-16 19:00:25,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:25,714 INFO L93 Difference]: Finished difference Result 2994 states and 11881 transitions. [2020-01-16 19:00:25,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:25,715 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:25,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:25,722 INFO L225 Difference]: With dead ends: 2994 [2020-01-16 19:00:25,722 INFO L226 Difference]: Without dead ends: 2970 [2020-01-16 19:00:25,722 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:25,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2970 states. [2020-01-16 19:00:25,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2970 to 1576. [2020-01-16 19:00:25,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 19:00:25,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7069 transitions. [2020-01-16 19:00:25,789 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7069 transitions. Word has length 28 [2020-01-16 19:00:25,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:25,789 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7069 transitions. [2020-01-16 19:00:25,789 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:25,790 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7069 transitions. [2020-01-16 19:00:25,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:25,792 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:25,792 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:25,792 INFO L426 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:25,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:25,792 INFO L82 PathProgramCache]: Analyzing trace with hash 844274742, now seen corresponding path program 69 times [2020-01-16 19:00:25,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:25,793 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222148545] [2020-01-16 19:00:25,793 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:25,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:26,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:26,352 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222148545] [2020-01-16 19:00:26,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:26,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:26,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219358710] [2020-01-16 19:00:26,353 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:26,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:26,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:26,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:26,353 INFO L87 Difference]: Start difference. First operand 1576 states and 7069 transitions. Second operand 11 states. [2020-01-16 19:00:26,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:26,529 INFO L93 Difference]: Finished difference Result 2991 states and 11875 transitions. [2020-01-16 19:00:26,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:26,530 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:26,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:26,537 INFO L225 Difference]: With dead ends: 2991 [2020-01-16 19:00:26,537 INFO L226 Difference]: Without dead ends: 2975 [2020-01-16 19:00:26,537 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:26,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2975 states. [2020-01-16 19:00:26,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2975 to 1582. [2020-01-16 19:00:26,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 19:00:26,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7080 transitions. [2020-01-16 19:00:26,606 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7080 transitions. Word has length 28 [2020-01-16 19:00:26,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:26,606 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7080 transitions. [2020-01-16 19:00:26,606 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:26,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7080 transitions. [2020-01-16 19:00:26,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:26,608 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:26,608 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:26,609 INFO L426 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:26,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:26,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1762224932, now seen corresponding path program 70 times [2020-01-16 19:00:26,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:26,609 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234712821] [2020-01-16 19:00:26,609 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:26,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:27,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:27,173 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234712821] [2020-01-16 19:00:27,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:27,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:27,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822747940] [2020-01-16 19:00:27,174 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:27,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:27,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:27,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:27,174 INFO L87 Difference]: Start difference. First operand 1582 states and 7080 transitions. Second operand 11 states. [2020-01-16 19:00:27,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:27,351 INFO L93 Difference]: Finished difference Result 2992 states and 11871 transitions. [2020-01-16 19:00:27,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:27,351 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:27,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:27,359 INFO L225 Difference]: With dead ends: 2992 [2020-01-16 19:00:27,359 INFO L226 Difference]: Without dead ends: 2969 [2020-01-16 19:00:27,359 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:27,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2969 states. [2020-01-16 19:00:27,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2969 to 1576. [2020-01-16 19:00:27,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 19:00:27,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7063 transitions. [2020-01-16 19:00:27,428 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7063 transitions. Word has length 28 [2020-01-16 19:00:27,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:27,428 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7063 transitions. [2020-01-16 19:00:27,428 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:27,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7063 transitions. [2020-01-16 19:00:27,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:27,431 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:27,431 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:27,431 INFO L426 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:27,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:27,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1260594358, now seen corresponding path program 71 times [2020-01-16 19:00:27,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:27,431 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510845114] [2020-01-16 19:00:27,431 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:27,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:27,972 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 33 [2020-01-16 19:00:27,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:27,979 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510845114] [2020-01-16 19:00:27,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:27,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:27,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215503588] [2020-01-16 19:00:27,980 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:27,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:27,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:27,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:27,980 INFO L87 Difference]: Start difference. First operand 1576 states and 7063 transitions. Second operand 11 states. [2020-01-16 19:00:28,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:28,193 INFO L93 Difference]: Finished difference Result 2996 states and 11880 transitions. [2020-01-16 19:00:28,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:28,193 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:28,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:28,201 INFO L225 Difference]: With dead ends: 2996 [2020-01-16 19:00:28,201 INFO L226 Difference]: Without dead ends: 2978 [2020-01-16 19:00:28,201 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:28,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2978 states. [2020-01-16 19:00:28,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2978 to 1583. [2020-01-16 19:00:28,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 19:00:28,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7076 transitions. [2020-01-16 19:00:28,268 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7076 transitions. Word has length 28 [2020-01-16 19:00:28,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:28,269 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7076 transitions. [2020-01-16 19:00:28,269 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:28,269 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7076 transitions. [2020-01-16 19:00:28,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:28,271 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:28,271 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:28,271 INFO L426 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:28,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:28,271 INFO L82 PathProgramCache]: Analyzing trace with hash 689139552, now seen corresponding path program 72 times [2020-01-16 19:00:28,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:28,272 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644373900] [2020-01-16 19:00:28,272 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:28,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:28,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:28,815 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644373900] [2020-01-16 19:00:28,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:28,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:28,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901641564] [2020-01-16 19:00:28,816 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:28,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:28,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:28,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:28,817 INFO L87 Difference]: Start difference. First operand 1583 states and 7076 transitions. Second operand 11 states. [2020-01-16 19:00:29,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:29,028 INFO L93 Difference]: Finished difference Result 2995 states and 11871 transitions. [2020-01-16 19:00:29,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:29,028 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:29,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:29,037 INFO L225 Difference]: With dead ends: 2995 [2020-01-16 19:00:29,037 INFO L226 Difference]: Without dead ends: 2960 [2020-01-16 19:00:29,037 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:29,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2960 states. [2020-01-16 19:00:29,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2960 to 1565. [2020-01-16 19:00:29,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 19:00:29,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7038 transitions. [2020-01-16 19:00:29,103 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7038 transitions. Word has length 28 [2020-01-16 19:00:29,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:29,104 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7038 transitions. [2020-01-16 19:00:29,104 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:29,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7038 transitions. [2020-01-16 19:00:29,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:29,106 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:29,106 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:29,106 INFO L426 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:29,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:29,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1952084594, now seen corresponding path program 73 times [2020-01-16 19:00:29,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:29,107 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154148589] [2020-01-16 19:00:29,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:29,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:29,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:29,650 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154148589] [2020-01-16 19:00:29,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:29,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:29,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476547358] [2020-01-16 19:00:29,651 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:29,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:29,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:29,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:29,651 INFO L87 Difference]: Start difference. First operand 1565 states and 7038 transitions. Second operand 11 states. [2020-01-16 19:00:29,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:29,829 INFO L93 Difference]: Finished difference Result 3018 states and 11947 transitions. [2020-01-16 19:00:29,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:29,829 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:29,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:29,837 INFO L225 Difference]: With dead ends: 3018 [2020-01-16 19:00:29,837 INFO L226 Difference]: Without dead ends: 3003 [2020-01-16 19:00:29,837 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:29,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3003 states. [2020-01-16 19:00:29,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3003 to 1586. [2020-01-16 19:00:29,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1586 states. [2020-01-16 19:00:29,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 7106 transitions. [2020-01-16 19:00:29,904 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 7106 transitions. Word has length 28 [2020-01-16 19:00:29,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:29,904 INFO L478 AbstractCegarLoop]: Abstraction has 1586 states and 7106 transitions. [2020-01-16 19:00:29,904 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:29,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 7106 transitions. [2020-01-16 19:00:29,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:29,907 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:29,907 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:29,907 INFO L426 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:29,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:29,907 INFO L82 PathProgramCache]: Analyzing trace with hash -853477706, now seen corresponding path program 74 times [2020-01-16 19:00:29,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:29,907 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056788156] [2020-01-16 19:00:29,907 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:29,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:30,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:30,487 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056788156] [2020-01-16 19:00:30,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:30,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:30,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887588691] [2020-01-16 19:00:30,487 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:30,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:30,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:30,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:30,488 INFO L87 Difference]: Start difference. First operand 1586 states and 7106 transitions. Second operand 11 states. [2020-01-16 19:00:30,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:30,623 INFO L93 Difference]: Finished difference Result 3023 states and 11951 transitions. [2020-01-16 19:00:30,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:30,624 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:30,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:30,631 INFO L225 Difference]: With dead ends: 3023 [2020-01-16 19:00:30,632 INFO L226 Difference]: Without dead ends: 2997 [2020-01-16 19:00:30,632 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:30,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2997 states. [2020-01-16 19:00:30,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2997 to 1580. [2020-01-16 19:00:30,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 19:00:30,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7089 transitions. [2020-01-16 19:00:30,703 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7089 transitions. Word has length 28 [2020-01-16 19:00:30,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:30,703 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7089 transitions. [2020-01-16 19:00:30,703 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:30,703 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7089 transitions. [2020-01-16 19:00:30,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:30,705 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:30,705 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:30,706 INFO L426 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:30,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:30,706 INFO L82 PathProgramCache]: Analyzing trace with hash -731941744, now seen corresponding path program 75 times [2020-01-16 19:00:30,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:30,706 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244627788] [2020-01-16 19:00:30,706 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:30,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:31,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:31,253 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244627788] [2020-01-16 19:00:31,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:31,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:31,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978465668] [2020-01-16 19:00:31,254 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:31,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:31,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:31,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:31,254 INFO L87 Difference]: Start difference. First operand 1580 states and 7089 transitions. Second operand 11 states. [2020-01-16 19:00:31,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:31,432 INFO L93 Difference]: Finished difference Result 3015 states and 11936 transitions. [2020-01-16 19:00:31,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:31,433 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:31,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:31,440 INFO L225 Difference]: With dead ends: 3015 [2020-01-16 19:00:31,441 INFO L226 Difference]: Without dead ends: 3000 [2020-01-16 19:00:31,441 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:31,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3000 states. [2020-01-16 19:00:31,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3000 to 1585. [2020-01-16 19:00:31,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 19:00:31,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7098 transitions. [2020-01-16 19:00:31,508 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7098 transitions. Word has length 28 [2020-01-16 19:00:31,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:31,508 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7098 transitions. [2020-01-16 19:00:31,509 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:31,509 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7098 transitions. [2020-01-16 19:00:31,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:31,511 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:31,511 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:31,511 INFO L426 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:31,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:31,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1502165750, now seen corresponding path program 76 times [2020-01-16 19:00:31,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:31,512 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356352606] [2020-01-16 19:00:31,512 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:31,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:32,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:32,051 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356352606] [2020-01-16 19:00:32,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:32,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:32,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798564382] [2020-01-16 19:00:32,052 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:32,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:32,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:32,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:32,052 INFO L87 Difference]: Start difference. First operand 1585 states and 7098 transitions. Second operand 11 states. [2020-01-16 19:00:32,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:32,272 INFO L93 Difference]: Finished difference Result 3018 states and 11937 transitions. [2020-01-16 19:00:32,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:32,273 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:32,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:32,280 INFO L225 Difference]: With dead ends: 3018 [2020-01-16 19:00:32,280 INFO L226 Difference]: Without dead ends: 2995 [2020-01-16 19:00:32,281 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:32,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2995 states. [2020-01-16 19:00:32,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2995 to 1580. [2020-01-16 19:00:32,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 19:00:32,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7084 transitions. [2020-01-16 19:00:32,348 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7084 transitions. Word has length 28 [2020-01-16 19:00:32,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:32,348 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7084 transitions. [2020-01-16 19:00:32,348 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:32,348 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7084 transitions. [2020-01-16 19:00:32,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:32,350 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:32,351 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:32,351 INFO L426 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:32,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:32,351 INFO L82 PathProgramCache]: Analyzing trace with hash -315622128, now seen corresponding path program 77 times [2020-01-16 19:00:32,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:32,351 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316695653] [2020-01-16 19:00:32,352 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:32,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:32,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:32,901 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316695653] [2020-01-16 19:00:32,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:32,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:32,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919350570] [2020-01-16 19:00:32,902 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:32,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:32,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:32,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:32,902 INFO L87 Difference]: Start difference. First operand 1580 states and 7084 transitions. Second operand 11 states. [2020-01-16 19:00:33,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:33,061 INFO L93 Difference]: Finished difference Result 3030 states and 11961 transitions. [2020-01-16 19:00:33,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:33,062 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:33,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:33,070 INFO L225 Difference]: With dead ends: 3030 [2020-01-16 19:00:33,070 INFO L226 Difference]: Without dead ends: 3010 [2020-01-16 19:00:33,070 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:33,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3010 states. [2020-01-16 19:00:33,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3010 to 1590. [2020-01-16 19:00:33,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1590 states. [2020-01-16 19:00:33,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 7101 transitions. [2020-01-16 19:00:33,138 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 7101 transitions. Word has length 28 [2020-01-16 19:00:33,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:33,138 INFO L478 AbstractCegarLoop]: Abstraction has 1590 states and 7101 transitions. [2020-01-16 19:00:33,139 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:33,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 7101 transitions. [2020-01-16 19:00:33,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:33,141 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:33,141 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:33,141 INFO L426 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:33,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:33,142 INFO L82 PathProgramCache]: Analyzing trace with hash 429080370, now seen corresponding path program 78 times [2020-01-16 19:00:33,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:33,142 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551389079] [2020-01-16 19:00:33,142 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:33,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:33,696 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 19:00:33,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:33,705 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551389079] [2020-01-16 19:00:33,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:33,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:33,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996566601] [2020-01-16 19:00:33,705 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:33,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:33,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:33,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:33,706 INFO L87 Difference]: Start difference. First operand 1590 states and 7101 transitions. Second operand 11 states. [2020-01-16 19:00:33,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:33,935 INFO L93 Difference]: Finished difference Result 3028 states and 11949 transitions. [2020-01-16 19:00:33,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:33,935 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:33,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:33,943 INFO L225 Difference]: With dead ends: 3028 [2020-01-16 19:00:33,943 INFO L226 Difference]: Without dead ends: 2993 [2020-01-16 19:00:33,944 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:33,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2993 states. [2020-01-16 19:00:34,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2993 to 1573. [2020-01-16 19:00:34,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:00:34,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7064 transitions. [2020-01-16 19:00:34,011 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7064 transitions. Word has length 28 [2020-01-16 19:00:34,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:34,011 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7064 transitions. [2020-01-16 19:00:34,012 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:34,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7064 transitions. [2020-01-16 19:00:34,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:34,014 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:34,014 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:34,014 INFO L426 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:34,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:34,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1755137380, now seen corresponding path program 79 times [2020-01-16 19:00:34,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:34,015 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440185399] [2020-01-16 19:00:34,015 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:34,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:34,571 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 19:00:34,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:34,577 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440185399] [2020-01-16 19:00:34,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:34,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:34,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886643793] [2020-01-16 19:00:34,578 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:34,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:34,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:34,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:34,578 INFO L87 Difference]: Start difference. First operand 1573 states and 7064 transitions. Second operand 11 states. [2020-01-16 19:00:34,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:34,767 INFO L93 Difference]: Finished difference Result 3014 states and 11932 transitions. [2020-01-16 19:00:34,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:34,768 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:34,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:34,775 INFO L225 Difference]: With dead ends: 3014 [2020-01-16 19:00:34,776 INFO L226 Difference]: Without dead ends: 2999 [2020-01-16 19:00:34,776 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:34,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2999 states. [2020-01-16 19:00:34,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2999 to 1585. [2020-01-16 19:00:34,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 19:00:34,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7097 transitions. [2020-01-16 19:00:34,843 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7097 transitions. Word has length 28 [2020-01-16 19:00:34,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:34,843 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7097 transitions. [2020-01-16 19:00:34,843 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:34,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7097 transitions. [2020-01-16 19:00:34,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:34,845 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:34,845 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:34,845 INFO L426 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:34,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:34,846 INFO L82 PathProgramCache]: Analyzing trace with hash -265732384, now seen corresponding path program 80 times [2020-01-16 19:00:34,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:34,846 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127480231] [2020-01-16 19:00:34,846 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:34,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:35,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:35,378 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127480231] [2020-01-16 19:00:35,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:35,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:35,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156988572] [2020-01-16 19:00:35,379 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:35,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:35,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:35,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:35,379 INFO L87 Difference]: Start difference. First operand 1585 states and 7097 transitions. Second operand 11 states. [2020-01-16 19:00:35,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:35,567 INFO L93 Difference]: Finished difference Result 3019 states and 11936 transitions. [2020-01-16 19:00:35,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:35,567 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:35,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:35,574 INFO L225 Difference]: With dead ends: 3019 [2020-01-16 19:00:35,574 INFO L226 Difference]: Without dead ends: 2993 [2020-01-16 19:00:35,575 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:35,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2993 states. [2020-01-16 19:00:35,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2993 to 1579. [2020-01-16 19:00:35,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 19:00:35,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7080 transitions. [2020-01-16 19:00:35,643 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7080 transitions. Word has length 28 [2020-01-16 19:00:35,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:35,643 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7080 transitions. [2020-01-16 19:00:35,644 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:35,644 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7080 transitions. [2020-01-16 19:00:35,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:35,646 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:35,646 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:35,646 INFO L426 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:35,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:35,646 INFO L82 PathProgramCache]: Analyzing trace with hash -679426224, now seen corresponding path program 81 times [2020-01-16 19:00:35,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:35,647 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527323246] [2020-01-16 19:00:35,647 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:35,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:36,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:36,180 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527323246] [2020-01-16 19:00:36,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:36,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:36,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258560170] [2020-01-16 19:00:36,181 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:36,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:36,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:36,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:36,182 INFO L87 Difference]: Start difference. First operand 1579 states and 7080 transitions. Second operand 11 states. [2020-01-16 19:00:36,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:36,366 INFO L93 Difference]: Finished difference Result 3010 states and 11919 transitions. [2020-01-16 19:00:36,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:36,367 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:36,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:36,374 INFO L225 Difference]: With dead ends: 3010 [2020-01-16 19:00:36,374 INFO L226 Difference]: Without dead ends: 2995 [2020-01-16 19:00:36,374 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:36,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2995 states. [2020-01-16 19:00:36,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2995 to 1584. [2020-01-16 19:00:36,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1584 states. [2020-01-16 19:00:36,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 7089 transitions. [2020-01-16 19:00:36,443 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 7089 transitions. Word has length 28 [2020-01-16 19:00:36,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:36,443 INFO L478 AbstractCegarLoop]: Abstraction has 1584 states and 7089 transitions. [2020-01-16 19:00:36,443 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:36,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 7089 transitions. [2020-01-16 19:00:36,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:36,445 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:36,446 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:36,446 INFO L426 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:36,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:36,446 INFO L82 PathProgramCache]: Analyzing trace with hash 983226464, now seen corresponding path program 82 times [2020-01-16 19:00:36,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:36,446 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904654161] [2020-01-16 19:00:36,447 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:36,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:37,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:37,018 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904654161] [2020-01-16 19:00:37,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:37,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:37,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956525605] [2020-01-16 19:00:37,019 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:37,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:37,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:37,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:37,019 INFO L87 Difference]: Start difference. First operand 1584 states and 7089 transitions. Second operand 11 states. [2020-01-16 19:00:37,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:37,206 INFO L93 Difference]: Finished difference Result 3012 states and 11918 transitions. [2020-01-16 19:00:37,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:37,206 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:37,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:37,213 INFO L225 Difference]: With dead ends: 3012 [2020-01-16 19:00:37,213 INFO L226 Difference]: Without dead ends: 2990 [2020-01-16 19:00:37,214 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:37,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2990 states. [2020-01-16 19:00:37,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2990 to 1579. [2020-01-16 19:00:37,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 19:00:37,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7075 transitions. [2020-01-16 19:00:37,281 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7075 transitions. Word has length 28 [2020-01-16 19:00:37,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:37,281 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7075 transitions. [2020-01-16 19:00:37,281 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:37,281 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7075 transitions. [2020-01-16 19:00:37,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:37,284 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:37,284 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:37,284 INFO L426 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:37,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:37,284 INFO L82 PathProgramCache]: Analyzing trace with hash -263106608, now seen corresponding path program 83 times [2020-01-16 19:00:37,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:37,284 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173330072] [2020-01-16 19:00:37,284 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:37,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:37,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:37,820 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173330072] [2020-01-16 19:00:37,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:37,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:37,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445192162] [2020-01-16 19:00:37,821 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:37,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:37,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:37,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:37,821 INFO L87 Difference]: Start difference. First operand 1579 states and 7075 transitions. Second operand 11 states. [2020-01-16 19:00:38,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:38,008 INFO L93 Difference]: Finished difference Result 3023 states and 11940 transitions. [2020-01-16 19:00:38,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:38,009 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:38,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:38,016 INFO L225 Difference]: With dead ends: 3023 [2020-01-16 19:00:38,016 INFO L226 Difference]: Without dead ends: 3003 [2020-01-16 19:00:38,016 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:38,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3003 states. [2020-01-16 19:00:38,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3003 to 1587. [2020-01-16 19:00:38,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1587 states. [2020-01-16 19:00:38,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 7089 transitions. [2020-01-16 19:00:38,083 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 7089 transitions. Word has length 28 [2020-01-16 19:00:38,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:38,083 INFO L478 AbstractCegarLoop]: Abstraction has 1587 states and 7089 transitions. [2020-01-16 19:00:38,083 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:38,083 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 7089 transitions. [2020-01-16 19:00:38,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:38,086 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:38,086 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:38,086 INFO L426 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:38,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:38,086 INFO L82 PathProgramCache]: Analyzing trace with hash -89858916, now seen corresponding path program 84 times [2020-01-16 19:00:38,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:38,086 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772668081] [2020-01-16 19:00:38,086 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:38,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:38,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:38,639 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772668081] [2020-01-16 19:00:38,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:38,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:38,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637364716] [2020-01-16 19:00:38,640 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:38,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:38,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:38,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:38,640 INFO L87 Difference]: Start difference. First operand 1587 states and 7089 transitions. Second operand 11 states. [2020-01-16 19:00:38,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:38,838 INFO L93 Difference]: Finished difference Result 3020 states and 11927 transitions. [2020-01-16 19:00:38,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:38,839 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:38,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:38,846 INFO L225 Difference]: With dead ends: 3020 [2020-01-16 19:00:38,846 INFO L226 Difference]: Without dead ends: 2989 [2020-01-16 19:00:38,846 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:38,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2020-01-16 19:00:38,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 1573. [2020-01-16 19:00:38,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:00:38,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7058 transitions. [2020-01-16 19:00:38,913 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7058 transitions. Word has length 28 [2020-01-16 19:00:38,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:38,914 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7058 transitions. [2020-01-16 19:00:38,914 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:38,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7058 transitions. [2020-01-16 19:00:38,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:38,916 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:38,916 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:38,916 INFO L426 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:38,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:38,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1744634276, now seen corresponding path program 85 times [2020-01-16 19:00:38,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:38,917 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838885572] [2020-01-16 19:00:38,917 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:38,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:39,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:39,462 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838885572] [2020-01-16 19:00:39,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:39,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:39,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55728740] [2020-01-16 19:00:39,462 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:39,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:39,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:39,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:39,463 INFO L87 Difference]: Start difference. First operand 1573 states and 7058 transitions. Second operand 11 states. [2020-01-16 19:00:39,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:39,659 INFO L93 Difference]: Finished difference Result 3006 states and 11911 transitions. [2020-01-16 19:00:39,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:39,660 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:39,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:39,667 INFO L225 Difference]: With dead ends: 3006 [2020-01-16 19:00:39,667 INFO L226 Difference]: Without dead ends: 2991 [2020-01-16 19:00:39,667 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:39,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2991 states. [2020-01-16 19:00:39,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2991 to 1583. [2020-01-16 19:00:39,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 19:00:39,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7086 transitions. [2020-01-16 19:00:39,735 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7086 transitions. Word has length 28 [2020-01-16 19:00:39,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:39,735 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7086 transitions. [2020-01-16 19:00:39,735 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:39,735 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7086 transitions. [2020-01-16 19:00:39,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:39,738 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:39,738 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:39,738 INFO L426 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:39,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:39,738 INFO L82 PathProgramCache]: Analyzing trace with hash 489473218, now seen corresponding path program 86 times [2020-01-16 19:00:39,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:39,738 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969600533] [2020-01-16 19:00:39,738 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:39,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:40,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:40,271 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969600533] [2020-01-16 19:00:40,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:40,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:40,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714355004] [2020-01-16 19:00:40,271 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:40,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:40,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:40,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:40,272 INFO L87 Difference]: Start difference. First operand 1583 states and 7086 transitions. Second operand 11 states. [2020-01-16 19:00:40,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:40,526 INFO L93 Difference]: Finished difference Result 3009 states and 11912 transitions. [2020-01-16 19:00:40,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:40,526 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:40,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:40,533 INFO L225 Difference]: With dead ends: 3009 [2020-01-16 19:00:40,533 INFO L226 Difference]: Without dead ends: 2986 [2020-01-16 19:00:40,533 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:40,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2986 states. [2020-01-16 19:00:40,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2986 to 1578. [2020-01-16 19:00:40,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 19:00:40,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7072 transitions. [2020-01-16 19:00:40,600 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7072 transitions. Word has length 28 [2020-01-16 19:00:40,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:40,600 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7072 transitions. [2020-01-16 19:00:40,600 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:40,600 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7072 transitions. [2020-01-16 19:00:40,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:40,602 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:40,602 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:40,602 INFO L426 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:40,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:40,603 INFO L82 PathProgramCache]: Analyzing trace with hash 2015103218, now seen corresponding path program 87 times [2020-01-16 19:00:40,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:40,603 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098586398] [2020-01-16 19:00:40,603 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:40,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:41,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:41,128 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098586398] [2020-01-16 19:00:41,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:41,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:41,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207682454] [2020-01-16 19:00:41,129 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:41,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:41,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:41,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:41,129 INFO L87 Difference]: Start difference. First operand 1578 states and 7072 transitions. Second operand 11 states. [2020-01-16 19:00:41,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:41,359 INFO L93 Difference]: Finished difference Result 3005 states and 11904 transitions. [2020-01-16 19:00:41,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:41,360 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:41,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:41,367 INFO L225 Difference]: With dead ends: 3005 [2020-01-16 19:00:41,367 INFO L226 Difference]: Without dead ends: 2990 [2020-01-16 19:00:41,368 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:41,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2990 states. [2020-01-16 19:00:41,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2990 to 1583. [2020-01-16 19:00:41,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 19:00:41,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7081 transitions. [2020-01-16 19:00:41,434 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7081 transitions. Word has length 28 [2020-01-16 19:00:41,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:41,435 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7081 transitions. [2020-01-16 19:00:41,435 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:41,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7081 transitions. [2020-01-16 19:00:41,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:41,437 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:41,437 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:41,437 INFO L426 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:41,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:41,437 INFO L82 PathProgramCache]: Analyzing trace with hash -617211390, now seen corresponding path program 88 times [2020-01-16 19:00:41,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:41,438 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859954142] [2020-01-16 19:00:41,438 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:41,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:41,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:41,969 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859954142] [2020-01-16 19:00:41,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:41,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:41,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601889999] [2020-01-16 19:00:41,970 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:41,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:41,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:41,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:41,971 INFO L87 Difference]: Start difference. First operand 1583 states and 7081 transitions. Second operand 11 states. [2020-01-16 19:00:42,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:42,166 INFO L93 Difference]: Finished difference Result 3007 states and 11903 transitions. [2020-01-16 19:00:42,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:42,167 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:42,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:42,175 INFO L225 Difference]: With dead ends: 3007 [2020-01-16 19:00:42,175 INFO L226 Difference]: Without dead ends: 2985 [2020-01-16 19:00:42,175 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:42,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2985 states. [2020-01-16 19:00:42,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2985 to 1578. [2020-01-16 19:00:42,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 19:00:42,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7067 transitions. [2020-01-16 19:00:42,249 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7067 transitions. Word has length 28 [2020-01-16 19:00:42,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:42,249 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7067 transitions. [2020-01-16 19:00:42,249 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:42,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7067 transitions. [2020-01-16 19:00:42,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:42,252 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:42,252 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:42,252 INFO L426 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:42,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:42,252 INFO L82 PathProgramCache]: Analyzing trace with hash 492098994, now seen corresponding path program 89 times [2020-01-16 19:00:42,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:42,252 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217939314] [2020-01-16 19:00:42,252 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:42,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:42,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:42,785 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217939314] [2020-01-16 19:00:42,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:42,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:42,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904998663] [2020-01-16 19:00:42,786 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:42,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:42,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:42,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:42,786 INFO L87 Difference]: Start difference. First operand 1578 states and 7067 transitions. Second operand 11 states. [2020-01-16 19:00:42,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:42,968 INFO L93 Difference]: Finished difference Result 3013 states and 11917 transitions. [2020-01-16 19:00:42,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:42,969 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:42,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:42,977 INFO L225 Difference]: With dead ends: 3013 [2020-01-16 19:00:42,977 INFO L226 Difference]: Without dead ends: 2995 [2020-01-16 19:00:42,977 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:43,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2995 states. [2020-01-16 19:00:43,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2995 to 1585. [2020-01-16 19:00:43,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 19:00:43,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7080 transitions. [2020-01-16 19:00:43,046 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7080 transitions. Word has length 28 [2020-01-16 19:00:43,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:43,046 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7080 transitions. [2020-01-16 19:00:43,047 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:43,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7080 transitions. [2020-01-16 19:00:43,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:43,049 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:43,049 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:43,049 INFO L426 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:43,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:43,049 INFO L82 PathProgramCache]: Analyzing trace with hash -79355812, now seen corresponding path program 90 times [2020-01-16 19:00:43,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:43,050 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442866459] [2020-01-16 19:00:43,050 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:43,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:43,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:43,587 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442866459] [2020-01-16 19:00:43,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:43,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:43,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952099670] [2020-01-16 19:00:43,588 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:43,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:43,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:43,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:43,588 INFO L87 Difference]: Start difference. First operand 1585 states and 7080 transitions. Second operand 11 states. [2020-01-16 19:00:43,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:43,820 INFO L93 Difference]: Finished difference Result 3012 states and 11908 transitions. [2020-01-16 19:00:43,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:43,820 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:43,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:43,829 INFO L225 Difference]: With dead ends: 3012 [2020-01-16 19:00:43,829 INFO L226 Difference]: Without dead ends: 2983 [2020-01-16 19:00:43,829 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:43,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2983 states. [2020-01-16 19:00:43,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2983 to 1573. [2020-01-16 19:00:43,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:00:43,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7053 transitions. [2020-01-16 19:00:43,912 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7053 transitions. Word has length 28 [2020-01-16 19:00:43,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:43,912 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7053 transitions. [2020-01-16 19:00:43,912 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:43,912 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7053 transitions. [2020-01-16 19:00:43,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:43,914 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:43,914 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:43,914 INFO L426 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:43,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:43,915 INFO L82 PathProgramCache]: Analyzing trace with hash -234223072, now seen corresponding path program 91 times [2020-01-16 19:00:43,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:43,915 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328734043] [2020-01-16 19:00:43,915 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:43,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:44,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:44,493 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328734043] [2020-01-16 19:00:44,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:44,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:44,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217466254] [2020-01-16 19:00:44,494 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:44,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:44,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:44,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:44,494 INFO L87 Difference]: Start difference. First operand 1573 states and 7053 transitions. Second operand 11 states. [2020-01-16 19:00:44,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:44,625 INFO L93 Difference]: Finished difference Result 3039 states and 11979 transitions. [2020-01-16 19:00:44,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:44,626 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:44,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:44,633 INFO L225 Difference]: With dead ends: 3039 [2020-01-16 19:00:44,633 INFO L226 Difference]: Without dead ends: 3019 [2020-01-16 19:00:44,633 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:44,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3019 states. [2020-01-16 19:00:44,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3019 to 1593. [2020-01-16 19:00:44,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1593 states. [2020-01-16 19:00:44,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1593 states to 1593 states and 7103 transitions. [2020-01-16 19:00:44,702 INFO L78 Accepts]: Start accepts. Automaton has 1593 states and 7103 transitions. Word has length 28 [2020-01-16 19:00:44,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:44,702 INFO L478 AbstractCegarLoop]: Abstraction has 1593 states and 7103 transitions. [2020-01-16 19:00:44,702 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:44,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1593 states and 7103 transitions. [2020-01-16 19:00:44,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:44,704 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:44,705 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:44,705 INFO L426 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:44,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:44,705 INFO L82 PathProgramCache]: Analyzing trace with hash 510479426, now seen corresponding path program 92 times [2020-01-16 19:00:44,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:44,705 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351691896] [2020-01-16 19:00:44,705 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:44,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:45,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:45,280 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351691896] [2020-01-16 19:00:45,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:45,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:45,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114010305] [2020-01-16 19:00:45,280 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:45,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:45,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:45,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:45,281 INFO L87 Difference]: Start difference. First operand 1593 states and 7103 transitions. Second operand 11 states. [2020-01-16 19:00:45,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:45,456 INFO L93 Difference]: Finished difference Result 3037 states and 11967 transitions. [2020-01-16 19:00:45,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:45,456 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:45,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:45,463 INFO L225 Difference]: With dead ends: 3037 [2020-01-16 19:00:45,464 INFO L226 Difference]: Without dead ends: 3009 [2020-01-16 19:00:45,464 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:45,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3009 states. [2020-01-16 19:00:45,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3009 to 1583. [2020-01-16 19:00:45,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 19:00:45,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7077 transitions. [2020-01-16 19:00:45,532 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7077 transitions. Word has length 28 [2020-01-16 19:00:45,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:45,532 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7077 transitions. [2020-01-16 19:00:45,532 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:45,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7077 transitions. [2020-01-16 19:00:45,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:45,535 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:45,535 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:45,535 INFO L426 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:45,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:45,535 INFO L82 PathProgramCache]: Analyzing trace with hash -769452874, now seen corresponding path program 93 times [2020-01-16 19:00:45,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:45,536 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989137162] [2020-01-16 19:00:45,536 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:45,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:46,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:46,087 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989137162] [2020-01-16 19:00:46,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:46,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:46,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901069492] [2020-01-16 19:00:46,087 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:46,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:46,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:46,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:46,088 INFO L87 Difference]: Start difference. First operand 1583 states and 7077 transitions. Second operand 11 states. [2020-01-16 19:00:46,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:46,255 INFO L93 Difference]: Finished difference Result 3036 states and 11964 transitions. [2020-01-16 19:00:46,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:46,255 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:46,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:46,262 INFO L225 Difference]: With dead ends: 3036 [2020-01-16 19:00:46,262 INFO L226 Difference]: Without dead ends: 3016 [2020-01-16 19:00:46,263 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:46,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3016 states. [2020-01-16 19:00:46,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3016 to 1591. [2020-01-16 19:00:46,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1591 states. [2020-01-16 19:00:46,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1591 states to 1591 states and 7091 transitions. [2020-01-16 19:00:46,336 INFO L78 Accepts]: Start accepts. Automaton has 1591 states and 7091 transitions. Word has length 28 [2020-01-16 19:00:46,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:46,337 INFO L478 AbstractCegarLoop]: Abstraction has 1591 states and 7091 transitions. [2020-01-16 19:00:46,337 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:46,337 INFO L276 IsEmpty]: Start isEmpty. Operand 1591 states and 7091 transitions. [2020-01-16 19:00:46,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:46,339 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:46,339 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:46,339 INFO L426 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:46,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:46,339 INFO L82 PathProgramCache]: Analyzing trace with hash -596205182, now seen corresponding path program 94 times [2020-01-16 19:00:46,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:46,340 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892867812] [2020-01-16 19:00:46,340 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:46,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:46,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:46,953 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892867812] [2020-01-16 19:00:46,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:46,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:46,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436410570] [2020-01-16 19:00:46,954 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:46,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:46,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:46,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:46,954 INFO L87 Difference]: Start difference. First operand 1591 states and 7091 transitions. Second operand 11 states. [2020-01-16 19:00:47,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:47,141 INFO L93 Difference]: Finished difference Result 3033 states and 11951 transitions. [2020-01-16 19:00:47,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:47,141 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:47,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:47,149 INFO L225 Difference]: With dead ends: 3033 [2020-01-16 19:00:47,149 INFO L226 Difference]: Without dead ends: 3008 [2020-01-16 19:00:47,149 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:47,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2020-01-16 19:00:47,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 1583. [2020-01-16 19:00:47,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 19:00:47,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7069 transitions. [2020-01-16 19:00:47,216 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7069 transitions. Word has length 28 [2020-01-16 19:00:47,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:47,216 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7069 transitions. [2020-01-16 19:00:47,216 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:47,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7069 transitions. [2020-01-16 19:00:47,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:47,218 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:47,218 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:47,218 INFO L426 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:47,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:47,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1586190582, now seen corresponding path program 95 times [2020-01-16 19:00:47,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:47,219 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057688403] [2020-01-16 19:00:47,219 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:47,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:47,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:47,769 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057688403] [2020-01-16 19:00:47,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:47,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:47,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344771353] [2020-01-16 19:00:47,770 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:47,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:47,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:47,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:47,770 INFO L87 Difference]: Start difference. First operand 1583 states and 7069 transitions. Second operand 11 states. [2020-01-16 19:00:47,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:47,955 INFO L93 Difference]: Finished difference Result 3031 states and 11948 transitions. [2020-01-16 19:00:47,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:47,955 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:47,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:47,963 INFO L225 Difference]: With dead ends: 3031 [2020-01-16 19:00:47,963 INFO L226 Difference]: Without dead ends: 3013 [2020-01-16 19:00:47,963 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:48,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3013 states. [2020-01-16 19:00:48,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3013 to 1590. [2020-01-16 19:00:48,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1590 states. [2020-01-16 19:00:48,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 7082 transitions. [2020-01-16 19:00:48,030 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 7082 transitions. Word has length 28 [2020-01-16 19:00:48,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:48,030 INFO L478 AbstractCegarLoop]: Abstraction has 1590 states and 7082 transitions. [2020-01-16 19:00:48,030 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:48,030 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 7082 transitions. [2020-01-16 19:00:48,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:48,032 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:48,032 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:48,032 INFO L426 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:48,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:48,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1014735776, now seen corresponding path program 96 times [2020-01-16 19:00:48,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:48,033 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519735398] [2020-01-16 19:00:48,033 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:48,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:48,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:48,620 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519735398] [2020-01-16 19:00:48,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:48,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:48,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135035040] [2020-01-16 19:00:48,620 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:48,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:48,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:48,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:48,623 INFO L87 Difference]: Start difference. First operand 1590 states and 7082 transitions. Second operand 11 states. [2020-01-16 19:00:48,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:48,815 INFO L93 Difference]: Finished difference Result 3030 states and 11939 transitions. [2020-01-16 19:00:48,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:48,815 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:48,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:48,822 INFO L225 Difference]: With dead ends: 3030 [2020-01-16 19:00:48,822 INFO L226 Difference]: Without dead ends: 2988 [2020-01-16 19:00:48,823 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:48,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2988 states. [2020-01-16 19:00:48,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2988 to 1565. [2020-01-16 19:00:48,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 19:00:48,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7030 transitions. [2020-01-16 19:00:48,889 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7030 transitions. Word has length 28 [2020-01-16 19:00:48,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:48,889 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7030 transitions. [2020-01-16 19:00:48,889 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:48,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7030 transitions. [2020-01-16 19:00:48,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:48,891 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:48,892 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:48,892 INFO L426 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:48,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:48,892 INFO L82 PathProgramCache]: Analyzing trace with hash 338356978, now seen corresponding path program 97 times [2020-01-16 19:00:48,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:48,892 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467446664] [2020-01-16 19:00:48,892 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:48,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:49,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:49,434 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467446664] [2020-01-16 19:00:49,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:49,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:49,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383796262] [2020-01-16 19:00:49,434 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:49,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:49,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:49,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:49,435 INFO L87 Difference]: Start difference. First operand 1565 states and 7030 transitions. Second operand 11 states. [2020-01-16 19:00:49,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:49,612 INFO L93 Difference]: Finished difference Result 3034 states and 11987 transitions. [2020-01-16 19:00:49,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:49,612 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:49,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:49,619 INFO L225 Difference]: With dead ends: 3034 [2020-01-16 19:00:49,619 INFO L226 Difference]: Without dead ends: 3018 [2020-01-16 19:00:49,619 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:49,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3018 states. [2020-01-16 19:00:49,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3018 to 1590. [2020-01-16 19:00:49,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1590 states. [2020-01-16 19:00:49,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 7110 transitions. [2020-01-16 19:00:49,687 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 7110 transitions. Word has length 28 [2020-01-16 19:00:49,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:49,687 INFO L478 AbstractCegarLoop]: Abstraction has 1590 states and 7110 transitions. [2020-01-16 19:00:49,687 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:49,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 7110 transitions. [2020-01-16 19:00:49,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:49,689 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:49,689 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:49,690 INFO L426 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:49,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:49,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1083059476, now seen corresponding path program 98 times [2020-01-16 19:00:49,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:49,690 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124053352] [2020-01-16 19:00:49,690 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:49,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:50,276 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 19:00:50,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:50,284 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124053352] [2020-01-16 19:00:50,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:50,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:50,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202743751] [2020-01-16 19:00:50,285 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:50,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:50,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:50,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:50,286 INFO L87 Difference]: Start difference. First operand 1590 states and 7110 transitions. Second operand 11 states. [2020-01-16 19:00:50,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:50,445 INFO L93 Difference]: Finished difference Result 3038 states and 11988 transitions. [2020-01-16 19:00:50,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:50,445 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:50,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:50,453 INFO L225 Difference]: With dead ends: 3038 [2020-01-16 19:00:50,454 INFO L226 Difference]: Without dead ends: 3011 [2020-01-16 19:00:50,454 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:50,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3011 states. [2020-01-16 19:00:50,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3011 to 1583. [2020-01-16 19:00:50,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 19:00:50,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7090 transitions. [2020-01-16 19:00:50,521 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7090 transitions. Word has length 28 [2020-01-16 19:00:50,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:50,521 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7090 transitions. [2020-01-16 19:00:50,521 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:50,521 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7090 transitions. [2020-01-16 19:00:50,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:50,523 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:50,523 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:50,523 INFO L426 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:50,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:50,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1949297936, now seen corresponding path program 99 times [2020-01-16 19:00:50,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:50,524 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307558825] [2020-01-16 19:00:50,524 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:50,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:51,074 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 19:00:51,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:51,082 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307558825] [2020-01-16 19:00:51,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:51,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:51,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860310014] [2020-01-16 19:00:51,083 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:51,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:51,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:51,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:51,083 INFO L87 Difference]: Start difference. First operand 1583 states and 7090 transitions. Second operand 11 states. [2020-01-16 19:00:51,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:51,321 INFO L93 Difference]: Finished difference Result 3031 states and 11975 transitions. [2020-01-16 19:00:51,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:51,321 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:51,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:51,327 INFO L225 Difference]: With dead ends: 3031 [2020-01-16 19:00:51,328 INFO L226 Difference]: Without dead ends: 3015 [2020-01-16 19:00:51,328 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:51,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3015 states. [2020-01-16 19:00:51,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3015 to 1589. [2020-01-16 19:00:51,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1589 states. [2020-01-16 19:00:51,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 7101 transitions. [2020-01-16 19:00:51,395 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 7101 transitions. Word has length 28 [2020-01-16 19:00:51,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:51,395 INFO L478 AbstractCegarLoop]: Abstraction has 1589 states and 7101 transitions. [2020-01-16 19:00:51,395 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:51,395 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 7101 transitions. [2020-01-16 19:00:51,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:51,397 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:51,397 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:51,398 INFO L426 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:51,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:51,398 INFO L82 PathProgramCache]: Analyzing trace with hash -856264364, now seen corresponding path program 100 times [2020-01-16 19:00:51,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:51,398 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313076363] [2020-01-16 19:00:51,398 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:51,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:51,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:51,933 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313076363] [2020-01-16 19:00:51,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:51,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:51,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773373866] [2020-01-16 19:00:51,934 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:51,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:51,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:51,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:51,934 INFO L87 Difference]: Start difference. First operand 1589 states and 7101 transitions. Second operand 11 states. [2020-01-16 19:00:52,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:52,135 INFO L93 Difference]: Finished difference Result 3033 states and 11973 transitions. [2020-01-16 19:00:52,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:52,136 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:52,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:52,143 INFO L225 Difference]: With dead ends: 3033 [2020-01-16 19:00:52,143 INFO L226 Difference]: Without dead ends: 3009 [2020-01-16 19:00:52,143 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:52,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3009 states. [2020-01-16 19:00:52,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3009 to 1583. [2020-01-16 19:00:52,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 19:00:52,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7084 transitions. [2020-01-16 19:00:52,210 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7084 transitions. Word has length 28 [2020-01-16 19:00:52,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:52,210 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7084 transitions. [2020-01-16 19:00:52,210 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:52,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7084 transitions. [2020-01-16 19:00:52,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:52,212 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:52,212 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:52,213 INFO L426 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:52,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:52,213 INFO L82 PathProgramCache]: Analyzing trace with hash 9974096, now seen corresponding path program 101 times [2020-01-16 19:00:52,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:52,213 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905702425] [2020-01-16 19:00:52,213 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:52,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:52,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:52,800 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905702425] [2020-01-16 19:00:52,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:52,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:52,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454321430] [2020-01-16 19:00:52,801 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:52,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:52,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:52,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:52,801 INFO L87 Difference]: Start difference. First operand 1583 states and 7084 transitions. Second operand 11 states. [2020-01-16 19:00:52,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:52,966 INFO L93 Difference]: Finished difference Result 3043 states and 11992 transitions. [2020-01-16 19:00:52,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:52,967 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:52,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:52,974 INFO L225 Difference]: With dead ends: 3043 [2020-01-16 19:00:52,975 INFO L226 Difference]: Without dead ends: 3023 [2020-01-16 19:00:52,975 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:53,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3023 states. [2020-01-16 19:00:53,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3023 to 1593. [2020-01-16 19:00:53,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1593 states. [2020-01-16 19:00:53,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1593 states to 1593 states and 7101 transitions. [2020-01-16 19:00:53,067 INFO L78 Accepts]: Start accepts. Automaton has 1593 states and 7101 transitions. Word has length 28 [2020-01-16 19:00:53,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:53,067 INFO L478 AbstractCegarLoop]: Abstraction has 1593 states and 7101 transitions. [2020-01-16 19:00:53,067 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:53,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1593 states and 7101 transitions. [2020-01-16 19:00:53,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:53,069 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:53,069 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:53,070 INFO L426 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:53,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:53,070 INFO L82 PathProgramCache]: Analyzing trace with hash 754676594, now seen corresponding path program 102 times [2020-01-16 19:00:53,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:53,070 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909494279] [2020-01-16 19:00:53,071 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:53,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:53,608 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 19:00:53,744 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 19:00:53,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:53,751 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909494279] [2020-01-16 19:00:53,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:53,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:53,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667486753] [2020-01-16 19:00:53,752 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:53,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:53,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:53,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:53,753 INFO L87 Difference]: Start difference. First operand 1593 states and 7101 transitions. Second operand 11 states. [2020-01-16 19:00:53,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:53,929 INFO L93 Difference]: Finished difference Result 3041 states and 11980 transitions. [2020-01-16 19:00:53,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:53,929 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:53,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:53,938 INFO L225 Difference]: With dead ends: 3041 [2020-01-16 19:00:53,938 INFO L226 Difference]: Without dead ends: 3005 [2020-01-16 19:00:53,939 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:53,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3005 states. [2020-01-16 19:00:54,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3005 to 1575. [2020-01-16 19:00:54,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:00:54,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7061 transitions. [2020-01-16 19:00:54,008 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7061 transitions. Word has length 28 [2020-01-16 19:00:54,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:54,008 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7061 transitions. [2020-01-16 19:00:54,008 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:54,008 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7061 transitions. [2020-01-16 19:00:54,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:54,011 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:54,011 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:54,011 INFO L426 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:54,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:54,011 INFO L82 PathProgramCache]: Analyzing trace with hash 926102300, now seen corresponding path program 103 times [2020-01-16 19:00:54,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:54,011 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000634664] [2020-01-16 19:00:54,011 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:54,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:54,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:54,551 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000634664] [2020-01-16 19:00:54,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:54,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:54,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913522354] [2020-01-16 19:00:54,551 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:54,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:54,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:54,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:54,552 INFO L87 Difference]: Start difference. First operand 1575 states and 7061 transitions. Second operand 11 states. [2020-01-16 19:00:54,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:54,786 INFO L93 Difference]: Finished difference Result 3030 states and 11971 transitions. [2020-01-16 19:00:54,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:54,786 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:54,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:54,793 INFO L225 Difference]: With dead ends: 3030 [2020-01-16 19:00:54,794 INFO L226 Difference]: Without dead ends: 3014 [2020-01-16 19:00:54,794 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:54,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3014 states. [2020-01-16 19:00:54,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3014 to 1589. [2020-01-16 19:00:54,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1589 states. [2020-01-16 19:00:54,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 7100 transitions. [2020-01-16 19:00:54,861 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 7100 transitions. Word has length 28 [2020-01-16 19:00:54,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:54,861 INFO L478 AbstractCegarLoop]: Abstraction has 1589 states and 7100 transitions. [2020-01-16 19:00:54,861 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:54,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 7100 transitions. [2020-01-16 19:00:54,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:54,864 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:54,864 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:54,864 INFO L426 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:54,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:54,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1670804798, now seen corresponding path program 104 times [2020-01-16 19:00:54,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:54,864 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150414730] [2020-01-16 19:00:54,864 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:54,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:55,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:55,427 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150414730] [2020-01-16 19:00:55,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:55,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:55,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032351684] [2020-01-16 19:00:55,427 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:55,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:55,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:55,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:55,428 INFO L87 Difference]: Start difference. First operand 1589 states and 7100 transitions. Second operand 11 states. [2020-01-16 19:00:55,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:55,607 INFO L93 Difference]: Finished difference Result 3034 states and 11972 transitions. [2020-01-16 19:00:55,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:55,608 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:55,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:55,615 INFO L225 Difference]: With dead ends: 3034 [2020-01-16 19:00:55,616 INFO L226 Difference]: Without dead ends: 3007 [2020-01-16 19:00:55,616 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:55,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3007 states. [2020-01-16 19:00:55,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3007 to 1582. [2020-01-16 19:00:55,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 19:00:55,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7080 transitions. [2020-01-16 19:00:55,684 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7080 transitions. Word has length 28 [2020-01-16 19:00:55,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:55,684 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7080 transitions. [2020-01-16 19:00:55,684 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:55,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7080 transitions. [2020-01-16 19:00:55,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:55,687 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:55,687 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:55,687 INFO L426 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:55,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:55,687 INFO L82 PathProgramCache]: Analyzing trace with hash 2001813456, now seen corresponding path program 105 times [2020-01-16 19:00:55,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:55,688 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565667477] [2020-01-16 19:00:55,688 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:55,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:56,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:56,226 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565667477] [2020-01-16 19:00:56,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:56,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:56,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199569371] [2020-01-16 19:00:56,226 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:56,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:56,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:56,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:56,227 INFO L87 Difference]: Start difference. First operand 1582 states and 7080 transitions. Second operand 11 states. [2020-01-16 19:00:56,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:56,461 INFO L93 Difference]: Finished difference Result 3026 states and 11957 transitions. [2020-01-16 19:00:56,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:56,461 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:56,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:56,469 INFO L225 Difference]: With dead ends: 3026 [2020-01-16 19:00:56,469 INFO L226 Difference]: Without dead ends: 3010 [2020-01-16 19:00:56,470 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:56,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3010 states. [2020-01-16 19:00:56,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3010 to 1588. [2020-01-16 19:00:56,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1588 states. [2020-01-16 19:00:56,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 7091 transitions. [2020-01-16 19:00:56,539 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 7091 transitions. Word has length 28 [2020-01-16 19:00:56,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:56,539 INFO L478 AbstractCegarLoop]: Abstraction has 1588 states and 7091 transitions. [2020-01-16 19:00:56,539 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:56,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 7091 transitions. [2020-01-16 19:00:56,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:56,542 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:56,542 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:56,542 INFO L426 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:56,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:56,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1375203650, now seen corresponding path program 106 times [2020-01-16 19:00:56,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:56,542 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191093777] [2020-01-16 19:00:56,543 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:56,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:57,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:57,123 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191093777] [2020-01-16 19:00:57,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:57,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:57,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645068303] [2020-01-16 19:00:57,123 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:57,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:57,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:57,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:57,124 INFO L87 Difference]: Start difference. First operand 1588 states and 7091 transitions. Second operand 11 states. [2020-01-16 19:00:57,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:57,310 INFO L93 Difference]: Finished difference Result 3027 states and 11953 transitions. [2020-01-16 19:00:57,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:57,311 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:57,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:57,318 INFO L225 Difference]: With dead ends: 3027 [2020-01-16 19:00:57,319 INFO L226 Difference]: Without dead ends: 3004 [2020-01-16 19:00:57,319 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:57,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3004 states. [2020-01-16 19:00:57,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3004 to 1582. [2020-01-16 19:00:57,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 19:00:57,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7074 transitions. [2020-01-16 19:00:57,388 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7074 transitions. Word has length 28 [2020-01-16 19:00:57,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:57,388 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7074 transitions. [2020-01-16 19:00:57,388 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:57,388 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7074 transitions. [2020-01-16 19:00:57,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:57,391 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:57,391 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:57,391 INFO L426 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:57,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:57,391 INFO L82 PathProgramCache]: Analyzing trace with hash 62489616, now seen corresponding path program 107 times [2020-01-16 19:00:57,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:57,391 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444303076] [2020-01-16 19:00:57,391 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:57,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:57,958 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 19:00:57,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:57,965 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444303076] [2020-01-16 19:00:57,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:57,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:57,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177769964] [2020-01-16 19:00:57,966 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:57,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:57,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:57,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:57,966 INFO L87 Difference]: Start difference. First operand 1582 states and 7074 transitions. Second operand 11 states. [2020-01-16 19:00:58,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:58,118 INFO L93 Difference]: Finished difference Result 3036 states and 11970 transitions. [2020-01-16 19:00:58,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:58,119 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:58,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:58,126 INFO L225 Difference]: With dead ends: 3036 [2020-01-16 19:00:58,127 INFO L226 Difference]: Without dead ends: 3016 [2020-01-16 19:00:58,127 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:58,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3016 states. [2020-01-16 19:00:58,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3016 to 1590. [2020-01-16 19:00:58,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1590 states. [2020-01-16 19:00:58,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 7088 transitions. [2020-01-16 19:00:58,194 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 7088 transitions. Word has length 28 [2020-01-16 19:00:58,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:58,194 INFO L478 AbstractCegarLoop]: Abstraction has 1590 states and 7088 transitions. [2020-01-16 19:00:58,194 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:58,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 7088 transitions. [2020-01-16 19:00:58,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:58,196 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:58,196 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:58,197 INFO L426 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:58,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:58,197 INFO L82 PathProgramCache]: Analyzing trace with hash 235737308, now seen corresponding path program 108 times [2020-01-16 19:00:58,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:58,197 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650016638] [2020-01-16 19:00:58,197 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:58,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:58,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:58,739 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650016638] [2020-01-16 19:00:58,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:58,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:58,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970955545] [2020-01-16 19:00:58,740 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:58,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:58,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:58,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:58,740 INFO L87 Difference]: Start difference. First operand 1590 states and 7088 transitions. Second operand 11 states. [2020-01-16 19:00:58,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:58,937 INFO L93 Difference]: Finished difference Result 3033 states and 11957 transitions. [2020-01-16 19:00:58,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:58,938 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:58,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:58,945 INFO L225 Difference]: With dead ends: 3033 [2020-01-16 19:00:58,945 INFO L226 Difference]: Without dead ends: 3001 [2020-01-16 19:00:58,946 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:58,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3001 states. [2020-01-16 19:00:59,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3001 to 1575. [2020-01-16 19:00:59,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:00:59,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7054 transitions. [2020-01-16 19:00:59,012 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7054 transitions. Word has length 28 [2020-01-16 19:00:59,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:59,013 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7054 transitions. [2020-01-16 19:00:59,013 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:59,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7054 transitions. [2020-01-16 19:00:59,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:59,015 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:59,015 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:59,015 INFO L426 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:59,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:59,015 INFO L82 PathProgramCache]: Analyzing trace with hash 936605404, now seen corresponding path program 109 times [2020-01-16 19:00:59,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:59,016 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974205230] [2020-01-16 19:00:59,016 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:59,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:00:59,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:00:59,551 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974205230] [2020-01-16 19:00:59,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:00:59,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:00:59,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501647849] [2020-01-16 19:00:59,552 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:00:59,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:00:59,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:00:59,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:00:59,552 INFO L87 Difference]: Start difference. First operand 1575 states and 7054 transitions. Second operand 11 states. [2020-01-16 19:00:59,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:00:59,799 INFO L93 Difference]: Finished difference Result 3022 states and 11949 transitions. [2020-01-16 19:00:59,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:00:59,799 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:00:59,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:00:59,806 INFO L225 Difference]: With dead ends: 3022 [2020-01-16 19:00:59,807 INFO L226 Difference]: Without dead ends: 3006 [2020-01-16 19:00:59,807 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:00:59,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3006 states. [2020-01-16 19:00:59,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3006 to 1587. [2020-01-16 19:00:59,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1587 states. [2020-01-16 19:00:59,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 7088 transitions. [2020-01-16 19:00:59,874 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 7088 transitions. Word has length 28 [2020-01-16 19:00:59,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:00:59,874 INFO L478 AbstractCegarLoop]: Abstraction has 1587 states and 7088 transitions. [2020-01-16 19:00:59,874 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:00:59,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 7088 transitions. [2020-01-16 19:00:59,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:00:59,877 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:00:59,877 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:00:59,877 INFO L426 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:00:59,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:00:59,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1868956896, now seen corresponding path program 110 times [2020-01-16 19:00:59,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:00:59,878 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421880219] [2020-01-16 19:00:59,878 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:00:59,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:00,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:00,413 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421880219] [2020-01-16 19:01:00,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:00,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:00,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051941944] [2020-01-16 19:01:00,414 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:00,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:00,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:00,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:00,414 INFO L87 Difference]: Start difference. First operand 1587 states and 7088 transitions. Second operand 11 states. [2020-01-16 19:01:00,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:00,647 INFO L93 Difference]: Finished difference Result 3024 states and 11947 transitions. [2020-01-16 19:01:00,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:00,647 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:00,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:00,654 INFO L225 Difference]: With dead ends: 3024 [2020-01-16 19:01:00,655 INFO L226 Difference]: Without dead ends: 3000 [2020-01-16 19:01:00,655 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:00,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3000 states. [2020-01-16 19:01:00,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3000 to 1581. [2020-01-16 19:01:00,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 19:01:00,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7071 transitions. [2020-01-16 19:01:00,722 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7071 transitions. Word has length 28 [2020-01-16 19:01:00,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:00,722 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7071 transitions. [2020-01-16 19:01:00,722 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:00,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7071 transitions. [2020-01-16 19:01:00,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:00,725 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:00,725 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:00,725 INFO L426 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:00,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:00,725 INFO L82 PathProgramCache]: Analyzing trace with hash 401375602, now seen corresponding path program 111 times [2020-01-16 19:01:00,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:00,725 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383772109] [2020-01-16 19:01:00,725 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:00,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:01,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:01,268 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383772109] [2020-01-16 19:01:01,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:01,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:01,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116885068] [2020-01-16 19:01:01,268 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:01,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:01,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:01,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:01,269 INFO L87 Difference]: Start difference. First operand 1581 states and 7071 transitions. Second operand 11 states. [2020-01-16 19:01:01,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:01,452 INFO L93 Difference]: Finished difference Result 3021 states and 11941 transitions. [2020-01-16 19:01:01,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:01,453 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:01,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:01,460 INFO L225 Difference]: With dead ends: 3021 [2020-01-16 19:01:01,460 INFO L226 Difference]: Without dead ends: 3005 [2020-01-16 19:01:01,460 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:01,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3005 states. [2020-01-16 19:01:01,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3005 to 1587. [2020-01-16 19:01:01,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1587 states. [2020-01-16 19:01:01,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 7082 transitions. [2020-01-16 19:01:01,527 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 7082 transitions. Word has length 28 [2020-01-16 19:01:01,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:01,528 INFO L478 AbstractCegarLoop]: Abstraction has 1587 states and 7082 transitions. [2020-01-16 19:01:01,528 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:01,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 7082 transitions. [2020-01-16 19:01:01,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:01,530 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:01,530 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:01,530 INFO L426 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:01,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:01,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1319325792, now seen corresponding path program 112 times [2020-01-16 19:01:01,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:01,531 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373086298] [2020-01-16 19:01:01,531 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:01,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:02,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:02,078 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373086298] [2020-01-16 19:01:02,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:02,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:02,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713572065] [2020-01-16 19:01:02,079 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:02,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:02,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:02,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:02,080 INFO L87 Difference]: Start difference. First operand 1587 states and 7082 transitions. Second operand 11 states. [2020-01-16 19:01:02,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:02,274 INFO L93 Difference]: Finished difference Result 3022 states and 11937 transitions. [2020-01-16 19:01:02,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:02,274 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:02,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:02,282 INFO L225 Difference]: With dead ends: 3022 [2020-01-16 19:01:02,282 INFO L226 Difference]: Without dead ends: 2999 [2020-01-16 19:01:02,282 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:02,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2999 states. [2020-01-16 19:01:02,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2999 to 1581. [2020-01-16 19:01:02,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 19:01:02,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7065 transitions. [2020-01-16 19:01:02,350 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7065 transitions. Word has length 28 [2020-01-16 19:01:02,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:02,350 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7065 transitions. [2020-01-16 19:01:02,350 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:02,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7065 transitions. [2020-01-16 19:01:02,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:02,352 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:02,352 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:02,352 INFO L426 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:02,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:02,353 INFO L82 PathProgramCache]: Analyzing trace with hash 817695218, now seen corresponding path program 113 times [2020-01-16 19:01:02,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:02,353 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3653522] [2020-01-16 19:01:02,353 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:02,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:02,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:02,925 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3653522] [2020-01-16 19:01:02,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:02,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:02,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582164872] [2020-01-16 19:01:02,925 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:02,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:02,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:02,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:02,926 INFO L87 Difference]: Start difference. First operand 1581 states and 7065 transitions. Second operand 11 states. [2020-01-16 19:01:03,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:03,140 INFO L93 Difference]: Finished difference Result 3026 states and 11946 transitions. [2020-01-16 19:01:03,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:03,141 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:03,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:03,148 INFO L225 Difference]: With dead ends: 3026 [2020-01-16 19:01:03,148 INFO L226 Difference]: Without dead ends: 3008 [2020-01-16 19:01:03,149 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:03,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2020-01-16 19:01:03,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 1588. [2020-01-16 19:01:03,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1588 states. [2020-01-16 19:01:03,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 7078 transitions. [2020-01-16 19:01:03,216 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 7078 transitions. Word has length 28 [2020-01-16 19:01:03,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:03,216 INFO L478 AbstractCegarLoop]: Abstraction has 1588 states and 7078 transitions. [2020-01-16 19:01:03,216 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:03,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 7078 transitions. [2020-01-16 19:01:03,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:03,219 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:03,219 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:03,219 INFO L426 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:03,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:03,219 INFO L82 PathProgramCache]: Analyzing trace with hash 246240412, now seen corresponding path program 114 times [2020-01-16 19:01:03,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:03,219 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020396738] [2020-01-16 19:01:03,219 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:03,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:03,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:03,760 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020396738] [2020-01-16 19:01:03,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:03,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:03,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429204240] [2020-01-16 19:01:03,761 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:03,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:03,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:03,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:03,762 INFO L87 Difference]: Start difference. First operand 1588 states and 7078 transitions. Second operand 11 states. [2020-01-16 19:01:03,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:03,968 INFO L93 Difference]: Finished difference Result 3025 states and 11937 transitions. [2020-01-16 19:01:03,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:03,968 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:03,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:03,975 INFO L225 Difference]: With dead ends: 3025 [2020-01-16 19:01:03,975 INFO L226 Difference]: Without dead ends: 2995 [2020-01-16 19:01:03,975 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:04,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2995 states. [2020-01-16 19:01:04,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2995 to 1575. [2020-01-16 19:01:04,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:01:04,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7048 transitions. [2020-01-16 19:01:04,044 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7048 transitions. Word has length 28 [2020-01-16 19:01:04,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:04,044 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7048 transitions. [2020-01-16 19:01:04,045 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:04,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7048 transitions. [2020-01-16 19:01:04,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:04,047 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:04,047 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:04,047 INFO L426 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:04,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:04,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1691811006, now seen corresponding path program 115 times [2020-01-16 19:01:04,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:04,048 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708478930] [2020-01-16 19:01:04,048 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:04,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:04,617 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 32 [2020-01-16 19:01:04,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:04,624 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708478930] [2020-01-16 19:01:04,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:04,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:04,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728035258] [2020-01-16 19:01:04,625 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:04,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:04,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:04,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:04,625 INFO L87 Difference]: Start difference. First operand 1575 states and 7048 transitions. Second operand 11 states. [2020-01-16 19:01:04,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:04,797 INFO L93 Difference]: Finished difference Result 3048 states and 11997 transitions. [2020-01-16 19:01:04,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:04,798 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:04,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:04,805 INFO L225 Difference]: With dead ends: 3048 [2020-01-16 19:01:04,805 INFO L226 Difference]: Without dead ends: 3028 [2020-01-16 19:01:04,805 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:04,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3028 states. [2020-01-16 19:01:04,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3028 to 1595. [2020-01-16 19:01:04,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1595 states. [2020-01-16 19:01:04,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1595 states to 1595 states and 7098 transitions. [2020-01-16 19:01:04,874 INFO L78 Accepts]: Start accepts. Automaton has 1595 states and 7098 transitions. Word has length 28 [2020-01-16 19:01:04,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:04,874 INFO L478 AbstractCegarLoop]: Abstraction has 1595 states and 7098 transitions. [2020-01-16 19:01:04,874 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:04,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1595 states and 7098 transitions. [2020-01-16 19:01:04,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:04,877 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:04,877 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:04,877 INFO L426 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:04,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:04,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1858453792, now seen corresponding path program 116 times [2020-01-16 19:01:04,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:04,877 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750274186] [2020-01-16 19:01:04,877 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:04,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:05,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:05,483 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750274186] [2020-01-16 19:01:05,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:05,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:05,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484190468] [2020-01-16 19:01:05,483 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:05,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:05,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:05,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:05,484 INFO L87 Difference]: Start difference. First operand 1595 states and 7098 transitions. Second operand 11 states. [2020-01-16 19:01:05,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:05,675 INFO L93 Difference]: Finished difference Result 3046 states and 11985 transitions. [2020-01-16 19:01:05,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:05,675 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:05,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:05,683 INFO L225 Difference]: With dead ends: 3046 [2020-01-16 19:01:05,683 INFO L226 Difference]: Without dead ends: 3018 [2020-01-16 19:01:05,684 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:05,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3018 states. [2020-01-16 19:01:05,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3018 to 1585. [2020-01-16 19:01:05,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 19:01:05,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7072 transitions. [2020-01-16 19:01:05,752 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7072 transitions. Word has length 28 [2020-01-16 19:01:05,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:05,752 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7072 transitions. [2020-01-16 19:01:05,752 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:05,752 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7072 transitions. [2020-01-16 19:01:05,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:05,754 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:05,754 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:05,755 INFO L426 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:05,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:05,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1156581204, now seen corresponding path program 117 times [2020-01-16 19:01:05,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:05,755 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932280577] [2020-01-16 19:01:05,755 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:05,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:06,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:06,322 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932280577] [2020-01-16 19:01:06,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:06,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:06,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282647682] [2020-01-16 19:01:06,323 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:06,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:06,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:06,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:06,323 INFO L87 Difference]: Start difference. First operand 1585 states and 7072 transitions. Second operand 11 states. [2020-01-16 19:01:06,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:06,500 INFO L93 Difference]: Finished difference Result 3045 states and 11982 transitions. [2020-01-16 19:01:06,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:06,501 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:06,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:06,508 INFO L225 Difference]: With dead ends: 3045 [2020-01-16 19:01:06,508 INFO L226 Difference]: Without dead ends: 3025 [2020-01-16 19:01:06,508 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:06,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3025 states. [2020-01-16 19:01:06,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3025 to 1593. [2020-01-16 19:01:06,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1593 states. [2020-01-16 19:01:06,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1593 states to 1593 states and 7086 transitions. [2020-01-16 19:01:06,575 INFO L78 Accepts]: Start accepts. Automaton has 1593 states and 7086 transitions. Word has length 28 [2020-01-16 19:01:06,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:06,576 INFO L478 AbstractCegarLoop]: Abstraction has 1593 states and 7086 transitions. [2020-01-16 19:01:06,576 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:06,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1593 states and 7086 transitions. [2020-01-16 19:01:06,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:06,578 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:06,578 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:06,578 INFO L426 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:06,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:06,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1329828896, now seen corresponding path program 118 times [2020-01-16 19:01:06,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:06,579 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362994787] [2020-01-16 19:01:06,579 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:06,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:07,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:07,260 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362994787] [2020-01-16 19:01:07,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:07,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:07,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217287190] [2020-01-16 19:01:07,261 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:07,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:07,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:07,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:07,261 INFO L87 Difference]: Start difference. First operand 1593 states and 7086 transitions. Second operand 11 states. [2020-01-16 19:01:07,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:07,488 INFO L93 Difference]: Finished difference Result 3042 states and 11969 transitions. [2020-01-16 19:01:07,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:07,488 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:07,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:07,496 INFO L225 Difference]: With dead ends: 3042 [2020-01-16 19:01:07,496 INFO L226 Difference]: Without dead ends: 3017 [2020-01-16 19:01:07,496 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:07,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3017 states. [2020-01-16 19:01:07,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3017 to 1585. [2020-01-16 19:01:07,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 19:01:07,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7064 transitions. [2020-01-16 19:01:07,567 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7064 transitions. Word has length 28 [2020-01-16 19:01:07,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:07,567 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7064 transitions. [2020-01-16 19:01:07,567 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:07,567 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7064 transitions. [2020-01-16 19:01:07,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:07,569 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:07,569 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:07,570 INFO L426 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:07,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:07,570 INFO L82 PathProgramCache]: Analyzing trace with hash -782742636, now seen corresponding path program 119 times [2020-01-16 19:01:07,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:07,570 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057498164] [2020-01-16 19:01:07,570 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:07,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:08,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:08,119 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057498164] [2020-01-16 19:01:08,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:08,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:08,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038436216] [2020-01-16 19:01:08,120 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:08,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:08,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:08,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:08,120 INFO L87 Difference]: Start difference. First operand 1585 states and 7064 transitions. Second operand 11 states. [2020-01-16 19:01:08,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:08,350 INFO L93 Difference]: Finished difference Result 3040 states and 11966 transitions. [2020-01-16 19:01:08,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:08,351 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:08,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:08,358 INFO L225 Difference]: With dead ends: 3040 [2020-01-16 19:01:08,359 INFO L226 Difference]: Without dead ends: 3022 [2020-01-16 19:01:08,359 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:08,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3022 states. [2020-01-16 19:01:08,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3022 to 1592. [2020-01-16 19:01:08,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1592 states. [2020-01-16 19:01:08,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1592 states to 1592 states and 7077 transitions. [2020-01-16 19:01:08,425 INFO L78 Accepts]: Start accepts. Automaton has 1592 states and 7077 transitions. Word has length 28 [2020-01-16 19:01:08,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:08,425 INFO L478 AbstractCegarLoop]: Abstraction has 1592 states and 7077 transitions. [2020-01-16 19:01:08,426 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:08,426 INFO L276 IsEmpty]: Start isEmpty. Operand 1592 states and 7077 transitions. [2020-01-16 19:01:08,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:08,428 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:08,428 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:08,428 INFO L426 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:08,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:08,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1354197442, now seen corresponding path program 120 times [2020-01-16 19:01:08,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:08,429 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246361572] [2020-01-16 19:01:08,429 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:08,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:08,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:08,974 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246361572] [2020-01-16 19:01:08,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:08,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:08,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478008955] [2020-01-16 19:01:08,975 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:08,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:08,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:08,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:08,976 INFO L87 Difference]: Start difference. First operand 1592 states and 7077 transitions. Second operand 11 states. [2020-01-16 19:01:09,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:09,247 INFO L93 Difference]: Finished difference Result 3039 states and 11957 transitions. [2020-01-16 19:01:09,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:09,247 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:09,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:09,254 INFO L225 Difference]: With dead ends: 3039 [2020-01-16 19:01:09,254 INFO L226 Difference]: Without dead ends: 2985 [2020-01-16 19:01:09,255 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:09,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2985 states. [2020-01-16 19:01:09,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2985 to 1555. [2020-01-16 19:01:09,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1555 states. [2020-01-16 19:01:09,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 7003 transitions. [2020-01-16 19:01:09,322 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 7003 transitions. Word has length 28 [2020-01-16 19:01:09,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:09,322 INFO L478 AbstractCegarLoop]: Abstraction has 1555 states and 7003 transitions. [2020-01-16 19:01:09,323 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:09,323 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 7003 transitions. [2020-01-16 19:01:09,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:09,325 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:09,325 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:09,325 INFO L426 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:09,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:09,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1151658060, now seen corresponding path program 121 times [2020-01-16 19:01:09,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:09,326 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311815304] [2020-01-16 19:01:09,326 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:09,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:09,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:09,862 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311815304] [2020-01-16 19:01:09,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:09,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:09,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687745609] [2020-01-16 19:01:09,862 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:09,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:09,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:09,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:09,863 INFO L87 Difference]: Start difference. First operand 1555 states and 7003 transitions. Second operand 11 states. [2020-01-16 19:01:10,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:10,130 INFO L93 Difference]: Finished difference Result 2966 states and 11803 transitions. [2020-01-16 19:01:10,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:10,131 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:10,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:10,138 INFO L225 Difference]: With dead ends: 2966 [2020-01-16 19:01:10,138 INFO L226 Difference]: Without dead ends: 2951 [2020-01-16 19:01:10,139 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:10,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2020-01-16 19:01:10,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 1579. [2020-01-16 19:01:10,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 19:01:10,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7097 transitions. [2020-01-16 19:01:10,206 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7097 transitions. Word has length 28 [2020-01-16 19:01:10,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:10,206 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7097 transitions. [2020-01-16 19:01:10,207 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:10,207 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7097 transitions. [2020-01-16 19:01:10,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:10,209 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:10,209 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:10,209 INFO L426 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:10,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:10,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1896360558, now seen corresponding path program 122 times [2020-01-16 19:01:10,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:10,210 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819113354] [2020-01-16 19:01:10,210 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:10,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:10,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:10,740 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819113354] [2020-01-16 19:01:10,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:10,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:10,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674374145] [2020-01-16 19:01:10,740 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:10,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:10,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:10,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:10,741 INFO L87 Difference]: Start difference. First operand 1579 states and 7097 transitions. Second operand 11 states. [2020-01-16 19:01:10,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:10,991 INFO L93 Difference]: Finished difference Result 2967 states and 11800 transitions. [2020-01-16 19:01:10,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:10,992 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:10,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:10,999 INFO L225 Difference]: With dead ends: 2967 [2020-01-16 19:01:10,999 INFO L226 Difference]: Without dead ends: 2946 [2020-01-16 19:01:10,999 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:11,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2946 states. [2020-01-16 19:01:11,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2946 to 1574. [2020-01-16 19:01:11,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 19:01:11,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7083 transitions. [2020-01-16 19:01:11,067 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7083 transitions. Word has length 28 [2020-01-16 19:01:11,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:11,067 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7083 transitions. [2020-01-16 19:01:11,067 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:11,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7083 transitions. [2020-01-16 19:01:11,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:11,069 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:11,069 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:11,069 INFO L426 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:11,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:11,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1532368278, now seen corresponding path program 123 times [2020-01-16 19:01:11,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:11,070 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312111187] [2020-01-16 19:01:11,070 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:11,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:11,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:11,601 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312111187] [2020-01-16 19:01:11,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:11,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:11,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349576830] [2020-01-16 19:01:11,602 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:11,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:11,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:11,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:11,602 INFO L87 Difference]: Start difference. First operand 1574 states and 7083 transitions. Second operand 11 states. [2020-01-16 19:01:11,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:11,847 INFO L93 Difference]: Finished difference Result 2971 states and 11807 transitions. [2020-01-16 19:01:11,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:11,848 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:11,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:11,855 INFO L225 Difference]: With dead ends: 2971 [2020-01-16 19:01:11,855 INFO L226 Difference]: Without dead ends: 2956 [2020-01-16 19:01:11,856 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:11,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2020-01-16 19:01:11,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 1580. [2020-01-16 19:01:11,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 19:01:11,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7094 transitions. [2020-01-16 19:01:11,922 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7094 transitions. Word has length 28 [2020-01-16 19:01:11,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:11,923 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7094 transitions. [2020-01-16 19:01:11,923 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:11,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7094 transitions. [2020-01-16 19:01:11,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:11,925 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:11,925 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:11,925 INFO L426 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:11,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:11,925 INFO L82 PathProgramCache]: Analyzing trace with hash -42963282, now seen corresponding path program 124 times [2020-01-16 19:01:11,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:11,926 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608785577] [2020-01-16 19:01:11,926 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:11,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:12,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:12,503 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608785577] [2020-01-16 19:01:12,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:12,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:12,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049338445] [2020-01-16 19:01:12,503 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:12,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:12,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:12,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:12,504 INFO L87 Difference]: Start difference. First operand 1580 states and 7094 transitions. Second operand 11 states. [2020-01-16 19:01:12,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:12,720 INFO L93 Difference]: Finished difference Result 2976 states and 11811 transitions. [2020-01-16 19:01:12,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:12,721 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:12,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:12,729 INFO L225 Difference]: With dead ends: 2976 [2020-01-16 19:01:12,729 INFO L226 Difference]: Without dead ends: 2950 [2020-01-16 19:01:12,729 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:12,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2020-01-16 19:01:12,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 1574. [2020-01-16 19:01:12,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 19:01:12,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7077 transitions. [2020-01-16 19:01:12,797 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7077 transitions. Word has length 28 [2020-01-16 19:01:12,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:12,797 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7077 transitions. [2020-01-16 19:01:12,797 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:12,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7077 transitions. [2020-01-16 19:01:12,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:12,799 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:12,800 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:12,800 INFO L426 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:12,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:12,800 INFO L82 PathProgramCache]: Analyzing trace with hash 823275178, now seen corresponding path program 125 times [2020-01-16 19:01:12,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:12,800 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096989185] [2020-01-16 19:01:12,800 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:12,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:13,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:13,390 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096989185] [2020-01-16 19:01:13,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:13,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:13,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107265611] [2020-01-16 19:01:13,391 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:13,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:13,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:13,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:13,391 INFO L87 Difference]: Start difference. First operand 1574 states and 7077 transitions. Second operand 11 states. [2020-01-16 19:01:13,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:13,660 INFO L93 Difference]: Finished difference Result 2974 states and 11808 transitions. [2020-01-16 19:01:13,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:13,661 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:13,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:13,668 INFO L225 Difference]: With dead ends: 2974 [2020-01-16 19:01:13,668 INFO L226 Difference]: Without dead ends: 2958 [2020-01-16 19:01:13,668 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:13,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2958 states. [2020-01-16 19:01:13,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2958 to 1581. [2020-01-16 19:01:13,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 19:01:13,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7090 transitions. [2020-01-16 19:01:13,735 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7090 transitions. Word has length 28 [2020-01-16 19:01:13,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:13,736 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7090 transitions. [2020-01-16 19:01:13,736 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:13,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7090 transitions. [2020-01-16 19:01:13,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:13,739 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:13,739 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:13,739 INFO L426 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:13,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:13,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1567977676, now seen corresponding path program 126 times [2020-01-16 19:01:13,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:13,740 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582501644] [2020-01-16 19:01:13,740 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:13,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:14,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:14,290 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582501644] [2020-01-16 19:01:14,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:14,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:14,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576552488] [2020-01-16 19:01:14,290 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:14,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:14,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:14,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:14,291 INFO L87 Difference]: Start difference. First operand 1581 states and 7090 transitions. Second operand 11 states. [2020-01-16 19:01:14,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:14,459 INFO L93 Difference]: Finished difference Result 2978 states and 11809 transitions. [2020-01-16 19:01:14,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:14,460 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:14,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:14,467 INFO L225 Difference]: With dead ends: 2978 [2020-01-16 19:01:14,467 INFO L226 Difference]: Without dead ends: 2945 [2020-01-16 19:01:14,468 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:14,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2945 states. [2020-01-16 19:01:14,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2945 to 1568. [2020-01-16 19:01:14,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 19:01:14,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7060 transitions. [2020-01-16 19:01:14,534 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7060 transitions. Word has length 28 [2020-01-16 19:01:14,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:14,534 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7060 transitions. [2020-01-16 19:01:14,534 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:14,534 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7060 transitions. [2020-01-16 19:01:14,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:14,536 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:14,536 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:14,536 INFO L426 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:14,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:14,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1871670534, now seen corresponding path program 127 times [2020-01-16 19:01:14,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:14,537 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196043510] [2020-01-16 19:01:14,537 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:14,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:15,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:15,065 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196043510] [2020-01-16 19:01:15,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:15,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:15,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615944331] [2020-01-16 19:01:15,066 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:15,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:15,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:15,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:15,067 INFO L87 Difference]: Start difference. First operand 1568 states and 7060 transitions. Second operand 11 states. [2020-01-16 19:01:15,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:15,301 INFO L93 Difference]: Finished difference Result 2961 states and 11787 transitions. [2020-01-16 19:01:15,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:15,302 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:15,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:15,311 INFO L225 Difference]: With dead ends: 2961 [2020-01-16 19:01:15,311 INFO L226 Difference]: Without dead ends: 2946 [2020-01-16 19:01:15,312 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:15,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2946 states. [2020-01-16 19:01:15,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2946 to 1578. [2020-01-16 19:01:15,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 19:01:15,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7088 transitions. [2020-01-16 19:01:15,405 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7088 transitions. Word has length 28 [2020-01-16 19:01:15,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:15,405 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7088 transitions. [2020-01-16 19:01:15,405 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:15,405 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7088 transitions. [2020-01-16 19:01:15,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:15,408 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:15,408 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:15,408 INFO L426 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:15,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:15,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1678594264, now seen corresponding path program 128 times [2020-01-16 19:01:15,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:15,409 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831188138] [2020-01-16 19:01:15,409 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:15,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:15,954 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 19:01:15,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:15,961 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831188138] [2020-01-16 19:01:15,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:15,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:15,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100418356] [2020-01-16 19:01:15,962 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:15,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:15,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:15,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:15,962 INFO L87 Difference]: Start difference. First operand 1578 states and 7088 transitions. Second operand 11 states. [2020-01-16 19:01:16,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:16,187 INFO L93 Difference]: Finished difference Result 2962 states and 11784 transitions. [2020-01-16 19:01:16,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:16,187 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:16,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:16,194 INFO L225 Difference]: With dead ends: 2962 [2020-01-16 19:01:16,194 INFO L226 Difference]: Without dead ends: 2941 [2020-01-16 19:01:16,194 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:16,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2941 states. [2020-01-16 19:01:16,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2941 to 1573. [2020-01-16 19:01:16,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:01:16,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7074 transitions. [2020-01-16 19:01:16,260 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7074 transitions. Word has length 28 [2020-01-16 19:01:16,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:16,261 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7074 transitions. [2020-01-16 19:01:16,261 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:16,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7074 transitions. [2020-01-16 19:01:16,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:16,263 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:16,263 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:16,263 INFO L426 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:16,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:16,263 INFO L82 PathProgramCache]: Analyzing trace with hash 798585154, now seen corresponding path program 129 times [2020-01-16 19:01:16,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:16,264 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110567511] [2020-01-16 19:01:16,264 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:16,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:16,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:16,793 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110567511] [2020-01-16 19:01:16,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:16,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:16,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340914585] [2020-01-16 19:01:16,794 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:16,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:16,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:16,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:16,795 INFO L87 Difference]: Start difference. First operand 1573 states and 7074 transitions. Second operand 11 states. [2020-01-16 19:01:17,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:17,059 INFO L93 Difference]: Finished difference Result 2963 states and 11786 transitions. [2020-01-16 19:01:17,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:17,060 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:17,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:17,067 INFO L225 Difference]: With dead ends: 2963 [2020-01-16 19:01:17,067 INFO L226 Difference]: Without dead ends: 2948 [2020-01-16 19:01:17,067 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:17,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2948 states. [2020-01-16 19:01:17,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2948 to 1578. [2020-01-16 19:01:17,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 19:01:17,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7083 transitions. [2020-01-16 19:01:17,163 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7083 transitions. Word has length 28 [2020-01-16 19:01:17,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:17,163 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7083 transitions. [2020-01-16 19:01:17,163 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:17,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7083 transitions. [2020-01-16 19:01:17,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:17,165 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:17,165 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:17,166 INFO L426 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:17,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:17,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1262274648, now seen corresponding path program 130 times [2020-01-16 19:01:17,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:17,166 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438136649] [2020-01-16 19:01:17,166 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:17,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:17,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:17,685 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438136649] [2020-01-16 19:01:17,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:17,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:17,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281140232] [2020-01-16 19:01:17,685 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:17,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:17,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:17,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:17,686 INFO L87 Difference]: Start difference. First operand 1578 states and 7083 transitions. Second operand 11 states. [2020-01-16 19:01:17,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:17,887 INFO L93 Difference]: Finished difference Result 2966 states and 11787 transitions. [2020-01-16 19:01:17,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:17,887 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:17,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:17,895 INFO L225 Difference]: With dead ends: 2966 [2020-01-16 19:01:17,895 INFO L226 Difference]: Without dead ends: 2943 [2020-01-16 19:01:17,896 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:17,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2943 states. [2020-01-16 19:01:17,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2943 to 1573. [2020-01-16 19:01:17,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:01:17,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7069 transitions. [2020-01-16 19:01:17,962 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7069 transitions. Word has length 28 [2020-01-16 19:01:17,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:17,962 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7069 transitions. [2020-01-16 19:01:17,962 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:17,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7069 transitions. [2020-01-16 19:01:17,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:17,965 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:17,965 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:17,965 INFO L426 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:17,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:17,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1140738686, now seen corresponding path program 131 times [2020-01-16 19:01:17,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:17,965 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082934317] [2020-01-16 19:01:17,965 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:17,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:18,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:18,493 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082934317] [2020-01-16 19:01:18,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:18,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:18,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885855295] [2020-01-16 19:01:18,494 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:18,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:18,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:18,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:18,494 INFO L87 Difference]: Start difference. First operand 1573 states and 7069 transitions. Second operand 11 states. [2020-01-16 19:01:18,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:18,668 INFO L93 Difference]: Finished difference Result 2966 states and 11788 transitions. [2020-01-16 19:01:18,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:18,668 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:18,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:18,675 INFO L225 Difference]: With dead ends: 2966 [2020-01-16 19:01:18,675 INFO L226 Difference]: Without dead ends: 2950 [2020-01-16 19:01:18,675 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:18,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2020-01-16 19:01:18,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 1579. [2020-01-16 19:01:18,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 19:01:18,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7080 transitions. [2020-01-16 19:01:18,743 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7080 transitions. Word has length 28 [2020-01-16 19:01:18,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:18,743 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7080 transitions. [2020-01-16 19:01:18,743 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:18,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7080 transitions. [2020-01-16 19:01:18,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:18,746 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:18,746 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:18,746 INFO L426 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:18,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:18,746 INFO L82 PathProgramCache]: Analyzing trace with hash 348666310, now seen corresponding path program 132 times [2020-01-16 19:01:18,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:18,746 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583565459] [2020-01-16 19:01:18,746 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:18,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:19,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:19,260 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583565459] [2020-01-16 19:01:19,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:19,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:19,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075713165] [2020-01-16 19:01:19,260 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:19,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:19,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:19,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:19,261 INFO L87 Difference]: Start difference. First operand 1579 states and 7080 transitions. Second operand 11 states. [2020-01-16 19:01:19,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:19,439 INFO L93 Difference]: Finished difference Result 2968 states and 11786 transitions. [2020-01-16 19:01:19,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:19,440 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:19,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:19,447 INFO L225 Difference]: With dead ends: 2968 [2020-01-16 19:01:19,447 INFO L226 Difference]: Without dead ends: 2939 [2020-01-16 19:01:19,447 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:19,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2939 states. [2020-01-16 19:01:19,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2939 to 1568. [2020-01-16 19:01:19,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 19:01:19,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7055 transitions. [2020-01-16 19:01:19,515 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7055 transitions. Word has length 28 [2020-01-16 19:01:19,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:19,515 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7055 transitions. [2020-01-16 19:01:19,515 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:19,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7055 transitions. [2020-01-16 19:01:19,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:19,518 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:19,518 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:19,518 INFO L426 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:19,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:19,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1882173638, now seen corresponding path program 133 times [2020-01-16 19:01:19,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:19,518 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112845212] [2020-01-16 19:01:19,518 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:19,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:20,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:20,049 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112845212] [2020-01-16 19:01:20,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:20,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:20,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838984830] [2020-01-16 19:01:20,049 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:20,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:20,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:20,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:20,050 INFO L87 Difference]: Start difference. First operand 1568 states and 7055 transitions. Second operand 11 states. [2020-01-16 19:01:20,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:20,220 INFO L93 Difference]: Finished difference Result 2977 states and 11814 transitions. [2020-01-16 19:01:20,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:20,220 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:20,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:20,227 INFO L225 Difference]: With dead ends: 2977 [2020-01-16 19:01:20,228 INFO L226 Difference]: Without dead ends: 2962 [2020-01-16 19:01:20,228 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:20,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2962 states. [2020-01-16 19:01:20,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2962 to 1581. [2020-01-16 19:01:20,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 19:01:20,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7090 transitions. [2020-01-16 19:01:20,297 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7090 transitions. Word has length 28 [2020-01-16 19:01:20,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:20,297 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7090 transitions. [2020-01-16 19:01:20,297 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:20,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7090 transitions. [2020-01-16 19:01:20,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:20,299 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:20,299 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:20,299 INFO L426 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:20,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:20,300 INFO L82 PathProgramCache]: Analyzing trace with hash -923388662, now seen corresponding path program 134 times [2020-01-16 19:01:20,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:20,300 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56075562] [2020-01-16 19:01:20,300 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:20,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:20,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:20,850 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56075562] [2020-01-16 19:01:20,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:20,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:20,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128529051] [2020-01-16 19:01:20,851 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:20,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:20,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:20,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:20,851 INFO L87 Difference]: Start difference. First operand 1581 states and 7090 transitions. Second operand 11 states. [2020-01-16 19:01:20,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:20,988 INFO L93 Difference]: Finished difference Result 2982 states and 11818 transitions. [2020-01-16 19:01:20,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:20,988 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:20,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:20,996 INFO L225 Difference]: With dead ends: 2982 [2020-01-16 19:01:20,996 INFO L226 Difference]: Without dead ends: 2956 [2020-01-16 19:01:20,996 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:21,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2020-01-16 19:01:21,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 1575. [2020-01-16 19:01:21,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:01:21,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7073 transitions. [2020-01-16 19:01:21,062 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7073 transitions. Word has length 28 [2020-01-16 19:01:21,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:21,063 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7073 transitions. [2020-01-16 19:01:21,063 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:21,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7073 transitions. [2020-01-16 19:01:21,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:21,065 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:21,065 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:21,065 INFO L426 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:21,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:21,065 INFO L82 PathProgramCache]: Analyzing trace with hash -801852700, now seen corresponding path program 135 times [2020-01-16 19:01:21,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:21,066 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243935029] [2020-01-16 19:01:21,066 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:21,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:21,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:21,618 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243935029] [2020-01-16 19:01:21,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:21,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:21,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368548814] [2020-01-16 19:01:21,619 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:21,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:21,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:21,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:21,619 INFO L87 Difference]: Start difference. First operand 1575 states and 7073 transitions. Second operand 11 states. [2020-01-16 19:01:21,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:21,806 INFO L93 Difference]: Finished difference Result 2974 states and 11803 transitions. [2020-01-16 19:01:21,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:21,807 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:21,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:21,814 INFO L225 Difference]: With dead ends: 2974 [2020-01-16 19:01:21,814 INFO L226 Difference]: Without dead ends: 2959 [2020-01-16 19:01:21,815 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:21,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2959 states. [2020-01-16 19:01:21,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2959 to 1580. [2020-01-16 19:01:21,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 19:01:21,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7082 transitions. [2020-01-16 19:01:21,903 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7082 transitions. Word has length 28 [2020-01-16 19:01:21,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:21,903 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7082 transitions. [2020-01-16 19:01:21,903 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:21,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7082 transitions. [2020-01-16 19:01:21,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:21,905 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:21,905 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:21,906 INFO L426 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:21,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:21,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1432254794, now seen corresponding path program 136 times [2020-01-16 19:01:21,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:21,906 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875312286] [2020-01-16 19:01:21,906 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:21,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:22,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:22,428 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875312286] [2020-01-16 19:01:22,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:22,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:22,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879585252] [2020-01-16 19:01:22,429 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:22,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:22,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:22,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:22,429 INFO L87 Difference]: Start difference. First operand 1580 states and 7082 transitions. Second operand 11 states. [2020-01-16 19:01:22,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:22,628 INFO L93 Difference]: Finished difference Result 2977 states and 11804 transitions. [2020-01-16 19:01:22,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:22,629 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:22,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:22,636 INFO L225 Difference]: With dead ends: 2977 [2020-01-16 19:01:22,637 INFO L226 Difference]: Without dead ends: 2954 [2020-01-16 19:01:22,637 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:22,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2020-01-16 19:01:22,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 1575. [2020-01-16 19:01:22,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:01:22,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7068 transitions. [2020-01-16 19:01:22,705 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7068 transitions. Word has length 28 [2020-01-16 19:01:22,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:22,705 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7068 transitions. [2020-01-16 19:01:22,705 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:22,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7068 transitions. [2020-01-16 19:01:22,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:22,708 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:22,708 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:22,708 INFO L426 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:22,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:22,708 INFO L82 PathProgramCache]: Analyzing trace with hash -385533084, now seen corresponding path program 137 times [2020-01-16 19:01:22,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:22,708 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407468606] [2020-01-16 19:01:22,708 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:22,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:23,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:23,279 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407468606] [2020-01-16 19:01:23,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:23,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:23,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404900053] [2020-01-16 19:01:23,280 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:23,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:23,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:23,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:23,280 INFO L87 Difference]: Start difference. First operand 1575 states and 7068 transitions. Second operand 11 states. [2020-01-16 19:01:23,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:23,416 INFO L93 Difference]: Finished difference Result 2989 states and 11828 transitions. [2020-01-16 19:01:23,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:23,416 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:23,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:23,423 INFO L225 Difference]: With dead ends: 2989 [2020-01-16 19:01:23,423 INFO L226 Difference]: Without dead ends: 2969 [2020-01-16 19:01:23,423 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:23,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2969 states. [2020-01-16 19:01:23,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2969 to 1585. [2020-01-16 19:01:23,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 19:01:23,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7085 transitions. [2020-01-16 19:01:23,490 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7085 transitions. Word has length 28 [2020-01-16 19:01:23,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:23,490 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7085 transitions. [2020-01-16 19:01:23,490 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:23,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7085 transitions. [2020-01-16 19:01:23,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:23,493 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:23,493 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:23,493 INFO L426 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:23,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:23,493 INFO L82 PathProgramCache]: Analyzing trace with hash 359169414, now seen corresponding path program 138 times [2020-01-16 19:01:23,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:23,493 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796620735] [2020-01-16 19:01:23,493 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:23,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:24,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:24,035 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796620735] [2020-01-16 19:01:24,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:24,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:24,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875509227] [2020-01-16 19:01:24,035 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:24,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:24,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:24,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:24,036 INFO L87 Difference]: Start difference. First operand 1585 states and 7085 transitions. Second operand 11 states. [2020-01-16 19:01:24,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:24,235 INFO L93 Difference]: Finished difference Result 2987 states and 11816 transitions. [2020-01-16 19:01:24,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:24,236 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:24,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:24,243 INFO L225 Difference]: With dead ends: 2987 [2020-01-16 19:01:24,243 INFO L226 Difference]: Without dead ends: 2952 [2020-01-16 19:01:24,243 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:24,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2020-01-16 19:01:24,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 1568. [2020-01-16 19:01:24,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 19:01:24,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7048 transitions. [2020-01-16 19:01:24,312 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7048 transitions. Word has length 28 [2020-01-16 19:01:24,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:24,312 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7048 transitions. [2020-01-16 19:01:24,312 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:24,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7048 transitions. [2020-01-16 19:01:24,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:24,314 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:24,314 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:24,315 INFO L426 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:24,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:24,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1657588056, now seen corresponding path program 139 times [2020-01-16 19:01:24,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:24,315 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839138710] [2020-01-16 19:01:24,315 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:24,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:24,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:24,871 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839138710] [2020-01-16 19:01:24,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:24,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:24,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63094349] [2020-01-16 19:01:24,872 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:24,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:24,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:24,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:24,872 INFO L87 Difference]: Start difference. First operand 1568 states and 7048 transitions. Second operand 11 states. [2020-01-16 19:01:25,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:25,042 INFO L93 Difference]: Finished difference Result 2984 states and 11826 transitions. [2020-01-16 19:01:25,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:25,043 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:25,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:25,050 INFO L225 Difference]: With dead ends: 2984 [2020-01-16 19:01:25,050 INFO L226 Difference]: Without dead ends: 2968 [2020-01-16 19:01:25,051 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:25,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2968 states. [2020-01-16 19:01:25,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2968 to 1583. [2020-01-16 19:01:25,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 19:01:25,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7089 transitions. [2020-01-16 19:01:25,117 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7089 transitions. Word has length 28 [2020-01-16 19:01:25,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:25,117 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7089 transitions. [2020-01-16 19:01:25,117 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:25,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7089 transitions. [2020-01-16 19:01:25,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:25,120 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:25,120 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:25,120 INFO L426 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:25,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:25,120 INFO L82 PathProgramCache]: Analyzing trace with hash -912885558, now seen corresponding path program 140 times [2020-01-16 19:01:25,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:25,120 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255460930] [2020-01-16 19:01:25,120 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:25,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:25,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:25,659 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255460930] [2020-01-16 19:01:25,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:25,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:25,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323855446] [2020-01-16 19:01:25,660 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:25,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:25,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:25,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:25,660 INFO L87 Difference]: Start difference. First operand 1583 states and 7089 transitions. Second operand 11 states. [2020-01-16 19:01:25,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:25,799 INFO L93 Difference]: Finished difference Result 2988 states and 11827 transitions. [2020-01-16 19:01:25,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:25,799 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:25,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:25,807 INFO L225 Difference]: With dead ends: 2988 [2020-01-16 19:01:25,807 INFO L226 Difference]: Without dead ends: 2961 [2020-01-16 19:01:25,807 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:25,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2020-01-16 19:01:25,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 1576. [2020-01-16 19:01:25,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 19:01:25,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7069 transitions. [2020-01-16 19:01:25,873 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7069 transitions. Word has length 28 [2020-01-16 19:01:25,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:25,873 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7069 transitions. [2020-01-16 19:01:25,873 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:25,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7069 transitions. [2020-01-16 19:01:25,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:25,875 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:25,876 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:25,876 INFO L426 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:25,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:25,876 INFO L82 PathProgramCache]: Analyzing trace with hash -46647098, now seen corresponding path program 141 times [2020-01-16 19:01:25,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:25,876 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992568127] [2020-01-16 19:01:25,876 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:25,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:26,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:26,404 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992568127] [2020-01-16 19:01:26,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:26,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:26,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019399682] [2020-01-16 19:01:26,405 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:26,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:26,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:26,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:26,405 INFO L87 Difference]: Start difference. First operand 1576 states and 7069 transitions. Second operand 11 states. [2020-01-16 19:01:26,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:26,586 INFO L93 Difference]: Finished difference Result 2981 states and 11814 transitions. [2020-01-16 19:01:26,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:26,587 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:26,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:26,594 INFO L225 Difference]: With dead ends: 2981 [2020-01-16 19:01:26,594 INFO L226 Difference]: Without dead ends: 2965 [2020-01-16 19:01:26,594 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:26,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2965 states. [2020-01-16 19:01:26,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2965 to 1582. [2020-01-16 19:01:26,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 19:01:26,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7080 transitions. [2020-01-16 19:01:26,681 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7080 transitions. Word has length 28 [2020-01-16 19:01:26,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:26,681 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7080 transitions. [2020-01-16 19:01:26,681 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:26,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7080 transitions. [2020-01-16 19:01:26,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:26,683 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:26,684 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:26,684 INFO L426 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:26,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:26,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1442757898, now seen corresponding path program 142 times [2020-01-16 19:01:26,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:26,684 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885785717] [2020-01-16 19:01:26,684 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:26,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:27,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:27,212 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885785717] [2020-01-16 19:01:27,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:27,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:27,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373156781] [2020-01-16 19:01:27,212 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:27,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:27,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:27,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:27,213 INFO L87 Difference]: Start difference. First operand 1582 states and 7080 transitions. Second operand 11 states. [2020-01-16 19:01:27,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:27,426 INFO L93 Difference]: Finished difference Result 2983 states and 11812 transitions. [2020-01-16 19:01:27,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:27,426 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:27,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:27,434 INFO L225 Difference]: With dead ends: 2983 [2020-01-16 19:01:27,434 INFO L226 Difference]: Without dead ends: 2959 [2020-01-16 19:01:27,434 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:27,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2959 states. [2020-01-16 19:01:27,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2959 to 1576. [2020-01-16 19:01:27,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 19:01:27,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7063 transitions. [2020-01-16 19:01:27,501 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7063 transitions. Word has length 28 [2020-01-16 19:01:27,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:27,501 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7063 transitions. [2020-01-16 19:01:27,501 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:27,501 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7063 transitions. [2020-01-16 19:01:27,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:27,503 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:27,503 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:27,503 INFO L426 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:27,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:27,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1985970938, now seen corresponding path program 143 times [2020-01-16 19:01:27,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:27,504 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723701650] [2020-01-16 19:01:27,504 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:27,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:28,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:28,066 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723701650] [2020-01-16 19:01:28,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:28,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:28,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137918216] [2020-01-16 19:01:28,066 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:28,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:28,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:28,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:28,067 INFO L87 Difference]: Start difference. First operand 1576 states and 7063 transitions. Second operand 11 states. [2020-01-16 19:01:28,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:28,211 INFO L93 Difference]: Finished difference Result 2993 states and 11831 transitions. [2020-01-16 19:01:28,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:28,211 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:28,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:28,218 INFO L225 Difference]: With dead ends: 2993 [2020-01-16 19:01:28,218 INFO L226 Difference]: Without dead ends: 2973 [2020-01-16 19:01:28,218 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:28,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2973 states. [2020-01-16 19:01:28,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2973 to 1586. [2020-01-16 19:01:28,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1586 states. [2020-01-16 19:01:28,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 7080 transitions. [2020-01-16 19:01:28,288 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 7080 transitions. Word has length 28 [2020-01-16 19:01:28,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:28,288 INFO L478 AbstractCegarLoop]: Abstraction has 1586 states and 7080 transitions. [2020-01-16 19:01:28,288 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:28,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 7080 transitions. [2020-01-16 19:01:28,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:28,290 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:28,290 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:28,290 INFO L426 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:28,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:28,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1241268440, now seen corresponding path program 144 times [2020-01-16 19:01:28,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:28,291 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311369554] [2020-01-16 19:01:28,291 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:28,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:28,825 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 19:01:28,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:28,832 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311369554] [2020-01-16 19:01:28,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:28,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:28,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579758356] [2020-01-16 19:01:28,833 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:28,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:28,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:28,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:28,833 INFO L87 Difference]: Start difference. First operand 1586 states and 7080 transitions. Second operand 11 states. [2020-01-16 19:01:29,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:29,022 INFO L93 Difference]: Finished difference Result 2991 states and 11819 transitions. [2020-01-16 19:01:29,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:29,023 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:29,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:29,030 INFO L225 Difference]: With dead ends: 2991 [2020-01-16 19:01:29,031 INFO L226 Difference]: Without dead ends: 2948 [2020-01-16 19:01:29,031 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:29,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2948 states. [2020-01-16 19:01:29,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2948 to 1561. [2020-01-16 19:01:29,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1561 states. [2020-01-16 19:01:29,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1561 states to 1561 states and 7029 transitions. [2020-01-16 19:01:29,098 INFO L78 Accepts]: Start accepts. Automaton has 1561 states and 7029 transitions. Word has length 28 [2020-01-16 19:01:29,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:29,098 INFO L478 AbstractCegarLoop]: Abstraction has 1561 states and 7029 transitions. [2020-01-16 19:01:29,098 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:29,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1561 states and 7029 transitions. [2020-01-16 19:01:29,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:29,101 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:29,101 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:29,101 INFO L426 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:29,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:29,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1398945230, now seen corresponding path program 145 times [2020-01-16 19:01:29,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:29,101 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372284040] [2020-01-16 19:01:29,101 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:29,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:29,633 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-01-16 19:01:29,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:29,640 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372284040] [2020-01-16 19:01:29,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:29,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:29,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677688064] [2020-01-16 19:01:29,641 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:29,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:29,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:29,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:29,641 INFO L87 Difference]: Start difference. First operand 1561 states and 7029 transitions. Second operand 11 states. [2020-01-16 19:01:29,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:29,827 INFO L93 Difference]: Finished difference Result 2946 states and 11739 transitions. [2020-01-16 19:01:29,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:29,828 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:29,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:29,835 INFO L225 Difference]: With dead ends: 2946 [2020-01-16 19:01:29,835 INFO L226 Difference]: Without dead ends: 2931 [2020-01-16 19:01:29,835 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:29,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2931 states. [2020-01-16 19:01:29,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2931 to 1577. [2020-01-16 19:01:29,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 19:01:29,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7083 transitions. [2020-01-16 19:01:29,903 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7083 transitions. Word has length 28 [2020-01-16 19:01:29,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:29,903 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7083 transitions. [2020-01-16 19:01:29,903 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:29,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7083 transitions. [2020-01-16 19:01:29,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:29,905 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:29,905 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:29,905 INFO L426 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:29,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:29,906 INFO L82 PathProgramCache]: Analyzing trace with hash -654242732, now seen corresponding path program 146 times [2020-01-16 19:01:29,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:29,906 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703434052] [2020-01-16 19:01:29,906 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:29,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:30,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:30,448 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703434052] [2020-01-16 19:01:30,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:30,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:30,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450943150] [2020-01-16 19:01:30,448 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:30,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:30,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:30,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:30,449 INFO L87 Difference]: Start difference. First operand 1577 states and 7083 transitions. Second operand 11 states. [2020-01-16 19:01:30,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:30,628 INFO L93 Difference]: Finished difference Result 2947 states and 11736 transitions. [2020-01-16 19:01:30,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:30,628 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:30,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:30,636 INFO L225 Difference]: With dead ends: 2947 [2020-01-16 19:01:30,636 INFO L226 Difference]: Without dead ends: 2926 [2020-01-16 19:01:30,636 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:30,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2020-01-16 19:01:30,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 1572. [2020-01-16 19:01:30,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 19:01:30,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7069 transitions. [2020-01-16 19:01:30,703 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7069 transitions. Word has length 28 [2020-01-16 19:01:30,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:30,704 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7069 transitions. [2020-01-16 19:01:30,704 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:30,704 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7069 transitions. [2020-01-16 19:01:30,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:30,706 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:30,706 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:30,706 INFO L426 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:30,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:30,706 INFO L82 PathProgramCache]: Analyzing trace with hash 211995728, now seen corresponding path program 147 times [2020-01-16 19:01:30,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:30,707 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925589870] [2020-01-16 19:01:30,707 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:30,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:31,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:31,243 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925589870] [2020-01-16 19:01:31,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:31,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:31,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092941419] [2020-01-16 19:01:31,243 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:31,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:31,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:31,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:31,244 INFO L87 Difference]: Start difference. First operand 1572 states and 7069 transitions. Second operand 11 states. [2020-01-16 19:01:31,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:31,472 INFO L93 Difference]: Finished difference Result 2951 states and 11743 transitions. [2020-01-16 19:01:31,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:31,473 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:31,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:31,480 INFO L225 Difference]: With dead ends: 2951 [2020-01-16 19:01:31,481 INFO L226 Difference]: Without dead ends: 2936 [2020-01-16 19:01:31,481 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:31,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2936 states. [2020-01-16 19:01:31,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2936 to 1578. [2020-01-16 19:01:31,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 19:01:31,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7080 transitions. [2020-01-16 19:01:31,546 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7080 transitions. Word has length 28 [2020-01-16 19:01:31,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:31,547 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7080 transitions. [2020-01-16 19:01:31,547 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:31,547 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7080 transitions. [2020-01-16 19:01:31,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:31,549 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:31,549 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:31,549 INFO L426 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:31,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:31,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1701400724, now seen corresponding path program 148 times [2020-01-16 19:01:31,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:31,550 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262587968] [2020-01-16 19:01:31,550 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:31,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:32,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:32,074 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262587968] [2020-01-16 19:01:32,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:32,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:32,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54006994] [2020-01-16 19:01:32,075 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:32,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:32,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:32,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:32,075 INFO L87 Difference]: Start difference. First operand 1578 states and 7080 transitions. Second operand 11 states. [2020-01-16 19:01:32,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:32,220 INFO L93 Difference]: Finished difference Result 2956 states and 11747 transitions. [2020-01-16 19:01:32,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:32,221 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:32,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:32,228 INFO L225 Difference]: With dead ends: 2956 [2020-01-16 19:01:32,228 INFO L226 Difference]: Without dead ends: 2930 [2020-01-16 19:01:32,229 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:32,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2020-01-16 19:01:32,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1572. [2020-01-16 19:01:32,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 19:01:32,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7063 transitions. [2020-01-16 19:01:32,296 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7063 transitions. Word has length 28 [2020-01-16 19:01:32,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:32,296 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7063 transitions. [2020-01-16 19:01:32,297 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:32,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7063 transitions. [2020-01-16 19:01:32,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:32,299 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:32,299 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:32,299 INFO L426 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:32,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:32,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1727328112, now seen corresponding path program 149 times [2020-01-16 19:01:32,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:32,299 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904669872] [2020-01-16 19:01:32,300 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:32,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:32,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:32,835 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904669872] [2020-01-16 19:01:32,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:32,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:32,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505642872] [2020-01-16 19:01:32,836 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:32,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:32,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:32,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:32,836 INFO L87 Difference]: Start difference. First operand 1572 states and 7063 transitions. Second operand 11 states. [2020-01-16 19:01:33,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:33,012 INFO L93 Difference]: Finished difference Result 2954 states and 11744 transitions. [2020-01-16 19:01:33,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:33,012 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:33,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:33,019 INFO L225 Difference]: With dead ends: 2954 [2020-01-16 19:01:33,020 INFO L226 Difference]: Without dead ends: 2938 [2020-01-16 19:01:33,020 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:33,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2020-01-16 19:01:33,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 1579. [2020-01-16 19:01:33,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 19:01:33,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7076 transitions. [2020-01-16 19:01:33,086 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7076 transitions. Word has length 28 [2020-01-16 19:01:33,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:33,086 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7076 transitions. [2020-01-16 19:01:33,086 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:33,087 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7076 transitions. [2020-01-16 19:01:33,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:33,089 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:33,089 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:33,089 INFO L426 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:33,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:33,089 INFO L82 PathProgramCache]: Analyzing trace with hash -982625614, now seen corresponding path program 150 times [2020-01-16 19:01:33,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:33,089 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600350064] [2020-01-16 19:01:33,090 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:33,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:33,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:33,637 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600350064] [2020-01-16 19:01:33,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:33,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:33,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298040546] [2020-01-16 19:01:33,637 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:33,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:33,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:33,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:33,638 INFO L87 Difference]: Start difference. First operand 1579 states and 7076 transitions. Second operand 11 states. [2020-01-16 19:01:33,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:33,786 INFO L93 Difference]: Finished difference Result 2958 states and 11745 transitions. [2020-01-16 19:01:33,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:33,786 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:33,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:33,794 INFO L225 Difference]: With dead ends: 2958 [2020-01-16 19:01:33,794 INFO L226 Difference]: Without dead ends: 2925 [2020-01-16 19:01:33,795 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:33,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2925 states. [2020-01-16 19:01:33,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2925 to 1566. [2020-01-16 19:01:33,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1566 states. [2020-01-16 19:01:33,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 7047 transitions. [2020-01-16 19:01:33,861 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 7047 transitions. Word has length 28 [2020-01-16 19:01:33,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:33,861 INFO L478 AbstractCegarLoop]: Abstraction has 1566 states and 7047 transitions. [2020-01-16 19:01:33,861 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:33,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 7047 transitions. [2020-01-16 19:01:33,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:33,863 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:33,863 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:33,864 INFO L426 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:33,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:33,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1606068116, now seen corresponding path program 151 times [2020-01-16 19:01:33,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:33,864 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640848021] [2020-01-16 19:01:33,864 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:33,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:34,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:34,399 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640848021] [2020-01-16 19:01:34,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:34,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:34,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545275033] [2020-01-16 19:01:34,399 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:34,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:34,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:34,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:34,400 INFO L87 Difference]: Start difference. First operand 1566 states and 7047 transitions. Second operand 11 states. [2020-01-16 19:01:34,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:34,586 INFO L93 Difference]: Finished difference Result 2933 states and 11703 transitions. [2020-01-16 19:01:34,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:34,586 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:34,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:34,594 INFO L225 Difference]: With dead ends: 2933 [2020-01-16 19:01:34,595 INFO L226 Difference]: Without dead ends: 2918 [2020-01-16 19:01:34,595 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:34,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2918 states. [2020-01-16 19:01:34,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2918 to 1575. [2020-01-16 19:01:34,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:01:34,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7071 transitions. [2020-01-16 19:01:34,663 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7071 transitions. Word has length 28 [2020-01-16 19:01:34,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:34,663 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7071 transitions. [2020-01-16 19:01:34,663 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:34,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7071 transitions. [2020-01-16 19:01:34,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:34,665 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:34,665 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:34,666 INFO L426 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:34,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:34,666 INFO L82 PathProgramCache]: Analyzing trace with hash -861365618, now seen corresponding path program 152 times [2020-01-16 19:01:34,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:34,666 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105927300] [2020-01-16 19:01:34,666 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:34,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:35,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:35,223 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105927300] [2020-01-16 19:01:35,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:35,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:35,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614951087] [2020-01-16 19:01:35,223 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:35,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:35,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:35,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:35,224 INFO L87 Difference]: Start difference. First operand 1575 states and 7071 transitions. Second operand 11 states. [2020-01-16 19:01:35,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:35,401 INFO L93 Difference]: Finished difference Result 2934 states and 11700 transitions. [2020-01-16 19:01:35,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:35,401 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:35,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:35,409 INFO L225 Difference]: With dead ends: 2934 [2020-01-16 19:01:35,409 INFO L226 Difference]: Without dead ends: 2913 [2020-01-16 19:01:35,410 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:35,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2913 states. [2020-01-16 19:01:35,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2913 to 1570. [2020-01-16 19:01:35,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 19:01:35,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7058 transitions. [2020-01-16 19:01:35,477 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7058 transitions. Word has length 28 [2020-01-16 19:01:35,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:35,477 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7058 transitions. [2020-01-16 19:01:35,477 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:35,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7058 transitions. [2020-01-16 19:01:35,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:35,479 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:35,480 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:35,480 INFO L426 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:35,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:35,480 INFO L82 PathProgramCache]: Analyzing trace with hash -2141297918, now seen corresponding path program 153 times [2020-01-16 19:01:35,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:35,480 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285482581] [2020-01-16 19:01:35,480 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:35,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:36,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:36,057 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285482581] [2020-01-16 19:01:36,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:36,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:36,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201790444] [2020-01-16 19:01:36,058 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:36,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:36,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:36,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:36,058 INFO L87 Difference]: Start difference. First operand 1570 states and 7058 transitions. Second operand 11 states. [2020-01-16 19:01:36,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:36,264 INFO L93 Difference]: Finished difference Result 2930 states and 11692 transitions. [2020-01-16 19:01:36,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:36,264 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:36,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:36,272 INFO L225 Difference]: With dead ends: 2930 [2020-01-16 19:01:36,272 INFO L226 Difference]: Without dead ends: 2915 [2020-01-16 19:01:36,272 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:36,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2915 states. [2020-01-16 19:01:36,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2915 to 1574. [2020-01-16 19:01:36,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 19:01:36,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7065 transitions. [2020-01-16 19:01:36,337 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7065 transitions. Word has length 28 [2020-01-16 19:01:36,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:36,338 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7065 transitions. [2020-01-16 19:01:36,338 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:36,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7065 transitions. [2020-01-16 19:01:36,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:36,340 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:36,340 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:36,340 INFO L426 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:36,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:36,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1968050226, now seen corresponding path program 154 times [2020-01-16 19:01:36,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:36,341 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485696389] [2020-01-16 19:01:36,341 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:36,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:36,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:36,867 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485696389] [2020-01-16 19:01:36,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:36,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:36,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60339934] [2020-01-16 19:01:36,867 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:36,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:36,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:36,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:36,868 INFO L87 Difference]: Start difference. First operand 1574 states and 7065 transitions. Second operand 11 states. [2020-01-16 19:01:37,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:37,056 INFO L93 Difference]: Finished difference Result 2929 states and 11686 transitions. [2020-01-16 19:01:37,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:37,056 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:37,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:37,063 INFO L225 Difference]: With dead ends: 2929 [2020-01-16 19:01:37,063 INFO L226 Difference]: Without dead ends: 2911 [2020-01-16 19:01:37,063 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:37,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2020-01-16 19:01:37,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 1570. [2020-01-16 19:01:37,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 19:01:37,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7054 transitions. [2020-01-16 19:01:37,130 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7054 transitions. Word has length 28 [2020-01-16 19:01:37,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:37,130 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7054 transitions. [2020-01-16 19:01:37,131 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:37,131 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7054 transitions. [2020-01-16 19:01:37,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:37,133 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:37,133 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:37,133 INFO L426 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:37,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:37,133 INFO L82 PathProgramCache]: Analyzing trace with hash 214345538, now seen corresponding path program 155 times [2020-01-16 19:01:37,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:37,134 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65682530] [2020-01-16 19:01:37,134 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:37,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:37,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:37,650 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65682530] [2020-01-16 19:01:37,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:37,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:37,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494222020] [2020-01-16 19:01:37,651 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:37,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:37,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:37,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:37,651 INFO L87 Difference]: Start difference. First operand 1570 states and 7054 transitions. Second operand 11 states. [2020-01-16 19:01:37,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:37,857 INFO L93 Difference]: Finished difference Result 2932 states and 11692 transitions. [2020-01-16 19:01:37,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:37,858 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:37,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:37,867 INFO L225 Difference]: With dead ends: 2932 [2020-01-16 19:01:37,867 INFO L226 Difference]: Without dead ends: 2916 [2020-01-16 19:01:37,867 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:37,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2020-01-16 19:01:37,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 1574. [2020-01-16 19:01:37,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 19:01:37,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7061 transitions. [2020-01-16 19:01:37,962 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7061 transitions. Word has length 28 [2020-01-16 19:01:37,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:37,962 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7061 transitions. [2020-01-16 19:01:37,963 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:37,963 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7061 transitions. [2020-01-16 19:01:37,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:37,968 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:37,968 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:37,968 INFO L426 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:37,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:37,969 INFO L82 PathProgramCache]: Analyzing trace with hash -357109268, now seen corresponding path program 156 times [2020-01-16 19:01:37,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:37,969 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827660534] [2020-01-16 19:01:37,969 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:37,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:38,552 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 19:01:38,709 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 19:01:38,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:38,721 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827660534] [2020-01-16 19:01:38,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:38,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:38,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268152607] [2020-01-16 19:01:38,722 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:38,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:38,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:38,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:38,723 INFO L87 Difference]: Start difference. First operand 1574 states and 7061 transitions. Second operand 11 states. [2020-01-16 19:01:38,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:38,955 INFO L93 Difference]: Finished difference Result 2930 states and 11684 transitions. [2020-01-16 19:01:38,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:38,955 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:38,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:38,963 INFO L225 Difference]: With dead ends: 2930 [2020-01-16 19:01:38,963 INFO L226 Difference]: Without dead ends: 2908 [2020-01-16 19:01:38,964 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:39,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2020-01-16 19:01:39,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 1566. [2020-01-16 19:01:39,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1566 states. [2020-01-16 19:01:39,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 7043 transitions. [2020-01-16 19:01:39,063 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 7043 transitions. Word has length 28 [2020-01-16 19:01:39,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:39,063 INFO L478 AbstractCegarLoop]: Abstraction has 1566 states and 7043 transitions. [2020-01-16 19:01:39,063 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:39,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 7043 transitions. [2020-01-16 19:01:39,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:39,066 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:39,066 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:39,066 INFO L426 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:39,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:39,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1595565012, now seen corresponding path program 157 times [2020-01-16 19:01:39,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:39,067 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225920835] [2020-01-16 19:01:39,067 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:39,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:39,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:39,583 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225920835] [2020-01-16 19:01:39,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:39,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:39,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27524526] [2020-01-16 19:01:39,583 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:39,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:39,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:39,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:39,584 INFO L87 Difference]: Start difference. First operand 1566 states and 7043 transitions. Second operand 11 states. [2020-01-16 19:01:39,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:39,762 INFO L93 Difference]: Finished difference Result 2945 states and 11722 transitions. [2020-01-16 19:01:39,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:39,762 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:39,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:39,769 INFO L225 Difference]: With dead ends: 2945 [2020-01-16 19:01:39,769 INFO L226 Difference]: Without dead ends: 2930 [2020-01-16 19:01:39,769 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:39,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2020-01-16 19:01:39,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1577. [2020-01-16 19:01:39,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 19:01:39,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7072 transitions. [2020-01-16 19:01:39,835 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7072 transitions. Word has length 28 [2020-01-16 19:01:39,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:39,836 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7072 transitions. [2020-01-16 19:01:39,836 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:39,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7072 transitions. [2020-01-16 19:01:39,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:39,838 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:39,838 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:39,838 INFO L426 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:39,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:39,838 INFO L82 PathProgramCache]: Analyzing trace with hash -106160016, now seen corresponding path program 158 times [2020-01-16 19:01:39,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:39,839 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358139913] [2020-01-16 19:01:39,839 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:39,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:40,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:40,365 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358139913] [2020-01-16 19:01:40,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:40,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:40,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633147358] [2020-01-16 19:01:40,366 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:40,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:40,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:40,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:40,366 INFO L87 Difference]: Start difference. First operand 1577 states and 7072 transitions. Second operand 11 states. [2020-01-16 19:01:40,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:40,502 INFO L93 Difference]: Finished difference Result 2950 states and 11726 transitions. [2020-01-16 19:01:40,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:40,503 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:40,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:40,510 INFO L225 Difference]: With dead ends: 2950 [2020-01-16 19:01:40,510 INFO L226 Difference]: Without dead ends: 2924 [2020-01-16 19:01:40,511 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:40,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2924 states. [2020-01-16 19:01:40,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2924 to 1571. [2020-01-16 19:01:40,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:01:40,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7056 transitions. [2020-01-16 19:01:40,578 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7056 transitions. Word has length 28 [2020-01-16 19:01:40,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:40,578 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7056 transitions. [2020-01-16 19:01:40,578 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:40,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7056 transitions. [2020-01-16 19:01:40,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:40,581 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:40,581 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:40,581 INFO L426 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:40,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:40,581 INFO L82 PathProgramCache]: Analyzing trace with hash 553231524, now seen corresponding path program 159 times [2020-01-16 19:01:40,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:40,581 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465853478] [2020-01-16 19:01:40,581 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:40,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:41,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:41,108 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465853478] [2020-01-16 19:01:41,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:41,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:41,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709124841] [2020-01-16 19:01:41,108 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:41,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:41,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:41,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:41,109 INFO L87 Difference]: Start difference. First operand 1571 states and 7056 transitions. Second operand 11 states. [2020-01-16 19:01:41,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:41,355 INFO L93 Difference]: Finished difference Result 2937 states and 11701 transitions. [2020-01-16 19:01:41,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:41,355 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:41,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:41,363 INFO L225 Difference]: With dead ends: 2937 [2020-01-16 19:01:41,363 INFO L226 Difference]: Without dead ends: 2922 [2020-01-16 19:01:41,363 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:41,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2922 states. [2020-01-16 19:01:41,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2922 to 1575. [2020-01-16 19:01:41,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:01:41,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7063 transitions. [2020-01-16 19:01:41,429 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7063 transitions. Word has length 28 [2020-01-16 19:01:41,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:41,429 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7063 transitions. [2020-01-16 19:01:41,429 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:41,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7063 transitions. [2020-01-16 19:01:41,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:41,431 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:41,431 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:41,432 INFO L426 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:41,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:41,432 INFO L82 PathProgramCache]: Analyzing trace with hash 726479216, now seen corresponding path program 160 times [2020-01-16 19:01:41,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:41,432 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228985045] [2020-01-16 19:01:41,432 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:41,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:41,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:41,957 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228985045] [2020-01-16 19:01:41,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:41,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:41,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925770019] [2020-01-16 19:01:41,957 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:41,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:41,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:41,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:41,958 INFO L87 Difference]: Start difference. First operand 1575 states and 7063 transitions. Second operand 11 states. [2020-01-16 19:01:42,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:42,139 INFO L93 Difference]: Finished difference Result 2936 states and 11695 transitions. [2020-01-16 19:01:42,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:42,140 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:42,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:42,147 INFO L225 Difference]: With dead ends: 2936 [2020-01-16 19:01:42,148 INFO L226 Difference]: Without dead ends: 2918 [2020-01-16 19:01:42,148 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:42,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2918 states. [2020-01-16 19:01:42,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2918 to 1571. [2020-01-16 19:01:42,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:01:42,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7052 transitions. [2020-01-16 19:01:42,214 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7052 transitions. Word has length 28 [2020-01-16 19:01:42,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:42,214 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7052 transitions. [2020-01-16 19:01:42,214 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:42,214 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7052 transitions. [2020-01-16 19:01:42,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:42,216 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:42,216 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:42,216 INFO L426 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:42,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:42,216 INFO L82 PathProgramCache]: Analyzing trace with hash 969551140, now seen corresponding path program 161 times [2020-01-16 19:01:42,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:42,217 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111873302] [2020-01-16 19:01:42,217 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:42,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:42,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:42,734 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111873302] [2020-01-16 19:01:42,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:42,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:42,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854189446] [2020-01-16 19:01:42,735 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:42,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:42,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:42,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:42,736 INFO L87 Difference]: Start difference. First operand 1571 states and 7052 transitions. Second operand 11 states. [2020-01-16 19:01:42,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:42,903 INFO L93 Difference]: Finished difference Result 2948 states and 11717 transitions. [2020-01-16 19:01:42,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:42,904 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:42,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:42,912 INFO L225 Difference]: With dead ends: 2948 [2020-01-16 19:01:42,912 INFO L226 Difference]: Without dead ends: 2928 [2020-01-16 19:01:42,912 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:42,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2020-01-16 19:01:42,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 1576. [2020-01-16 19:01:42,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 19:01:42,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7060 transitions. [2020-01-16 19:01:42,978 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7060 transitions. Word has length 28 [2020-01-16 19:01:42,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:42,978 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7060 transitions. [2020-01-16 19:01:42,979 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:42,979 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7060 transitions. [2020-01-16 19:01:42,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:42,981 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:42,981 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:42,981 INFO L426 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:42,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:42,981 INFO L82 PathProgramCache]: Analyzing trace with hash -346606164, now seen corresponding path program 162 times [2020-01-16 19:01:42,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:42,981 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984432428] [2020-01-16 19:01:42,982 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:42,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:43,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:43,500 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984432428] [2020-01-16 19:01:43,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:43,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:43,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766990526] [2020-01-16 19:01:43,500 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:43,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:43,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:43,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:43,501 INFO L87 Difference]: Start difference. First operand 1576 states and 7060 transitions. Second operand 11 states. [2020-01-16 19:01:43,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:43,739 INFO L93 Difference]: Finished difference Result 2942 states and 11701 transitions. [2020-01-16 19:01:43,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:43,740 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:43,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:43,748 INFO L225 Difference]: With dead ends: 2942 [2020-01-16 19:01:43,748 INFO L226 Difference]: Without dead ends: 2918 [2020-01-16 19:01:43,748 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:43,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2918 states. [2020-01-16 19:01:43,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2918 to 1566. [2020-01-16 19:01:43,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1566 states. [2020-01-16 19:01:43,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 7038 transitions. [2020-01-16 19:01:43,813 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 7038 transitions. Word has length 28 [2020-01-16 19:01:43,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:43,813 INFO L478 AbstractCegarLoop]: Abstraction has 1566 states and 7038 transitions. [2020-01-16 19:01:43,814 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:43,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 7038 transitions. [2020-01-16 19:01:43,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:43,816 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:43,816 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:43,816 INFO L426 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:43,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:43,816 INFO L82 PathProgramCache]: Analyzing trace with hash -840359410, now seen corresponding path program 163 times [2020-01-16 19:01:43,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:43,816 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939052093] [2020-01-16 19:01:43,816 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:43,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:44,341 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 19:01:44,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:44,348 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939052093] [2020-01-16 19:01:44,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:44,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:44,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259283318] [2020-01-16 19:01:44,348 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:44,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:44,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:44,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:44,349 INFO L87 Difference]: Start difference. First operand 1566 states and 7038 transitions. Second operand 11 states. [2020-01-16 19:01:44,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:44,535 INFO L93 Difference]: Finished difference Result 2950 states and 11729 transitions. [2020-01-16 19:01:44,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:44,535 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:44,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:44,542 INFO L225 Difference]: With dead ends: 2950 [2020-01-16 19:01:44,543 INFO L226 Difference]: Without dead ends: 2934 [2020-01-16 19:01:44,543 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:44,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2934 states. [2020-01-16 19:01:44,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2934 to 1578. [2020-01-16 19:01:44,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 19:01:44,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7069 transitions. [2020-01-16 19:01:44,611 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7069 transitions. Word has length 28 [2020-01-16 19:01:44,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:44,611 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7069 transitions. [2020-01-16 19:01:44,612 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:44,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7069 transitions. [2020-01-16 19:01:44,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:44,615 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:44,615 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:44,615 INFO L426 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:44,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:44,616 INFO L82 PathProgramCache]: Analyzing trace with hash -95656912, now seen corresponding path program 164 times [2020-01-16 19:01:44,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:44,616 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791129801] [2020-01-16 19:01:44,616 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:44,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:45,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:45,166 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791129801] [2020-01-16 19:01:45,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:45,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:45,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017600244] [2020-01-16 19:01:45,167 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:45,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:45,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:45,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:45,167 INFO L87 Difference]: Start difference. First operand 1578 states and 7069 transitions. Second operand 11 states. [2020-01-16 19:01:45,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:45,357 INFO L93 Difference]: Finished difference Result 2954 states and 11730 transitions. [2020-01-16 19:01:45,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:45,358 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:45,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:45,366 INFO L225 Difference]: With dead ends: 2954 [2020-01-16 19:01:45,366 INFO L226 Difference]: Without dead ends: 2927 [2020-01-16 19:01:45,366 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:45,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2927 states. [2020-01-16 19:01:45,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2927 to 1571. [2020-01-16 19:01:45,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:01:45,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7051 transitions. [2020-01-16 19:01:45,432 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7051 transitions. Word has length 28 [2020-01-16 19:01:45,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:45,432 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7051 transitions. [2020-01-16 19:01:45,432 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:45,432 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7051 transitions. [2020-01-16 19:01:45,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:45,435 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:45,435 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:45,435 INFO L426 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:45,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:45,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1308437126, now seen corresponding path program 165 times [2020-01-16 19:01:45,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:45,435 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155448611] [2020-01-16 19:01:45,435 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:45,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:45,950 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 19:01:45,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:45,958 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155448611] [2020-01-16 19:01:45,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:45,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:45,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545374161] [2020-01-16 19:01:45,958 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:45,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:45,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:45,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:45,959 INFO L87 Difference]: Start difference. First operand 1571 states and 7051 transitions. Second operand 11 states. [2020-01-16 19:01:46,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:46,157 INFO L93 Difference]: Finished difference Result 2941 states and 11705 transitions. [2020-01-16 19:01:46,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:46,158 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:46,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:46,165 INFO L225 Difference]: With dead ends: 2941 [2020-01-16 19:01:46,165 INFO L226 Difference]: Without dead ends: 2925 [2020-01-16 19:01:46,165 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:46,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2925 states. [2020-01-16 19:01:46,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2925 to 1575. [2020-01-16 19:01:46,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:01:46,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7058 transitions. [2020-01-16 19:01:46,231 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7058 transitions. Word has length 28 [2020-01-16 19:01:46,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:46,231 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7058 transitions. [2020-01-16 19:01:46,231 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:46,231 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7058 transitions. [2020-01-16 19:01:46,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:46,233 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:46,233 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:46,233 INFO L426 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:46,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:46,234 INFO L82 PathProgramCache]: Analyzing trace with hash 736982320, now seen corresponding path program 166 times [2020-01-16 19:01:46,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:46,234 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318385464] [2020-01-16 19:01:46,234 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:46,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:46,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:46,750 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318385464] [2020-01-16 19:01:46,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:46,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:46,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148802977] [2020-01-16 19:01:46,751 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:46,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:46,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:46,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:46,751 INFO L87 Difference]: Start difference. First operand 1575 states and 7058 transitions. Second operand 11 states. [2020-01-16 19:01:46,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:46,963 INFO L93 Difference]: Finished difference Result 2939 states and 11697 transitions. [2020-01-16 19:01:46,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:46,964 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:46,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:46,971 INFO L225 Difference]: With dead ends: 2939 [2020-01-16 19:01:46,971 INFO L226 Difference]: Without dead ends: 2921 [2020-01-16 19:01:46,971 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:47,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2020-01-16 19:01:47,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 1571. [2020-01-16 19:01:47,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:01:47,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7047 transitions. [2020-01-16 19:01:47,037 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7047 transitions. Word has length 28 [2020-01-16 19:01:47,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:47,037 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7047 transitions. [2020-01-16 19:01:47,037 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:47,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7047 transitions. [2020-01-16 19:01:47,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:47,040 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:47,040 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:47,040 INFO L426 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:47,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:47,040 INFO L82 PathProgramCache]: Analyzing trace with hash -630886714, now seen corresponding path program 167 times [2020-01-16 19:01:47,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:47,040 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485340757] [2020-01-16 19:01:47,040 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:47,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:47,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:47,569 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485340757] [2020-01-16 19:01:47,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:47,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:47,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818482152] [2020-01-16 19:01:47,570 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:47,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:47,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:47,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:47,570 INFO L87 Difference]: Start difference. First operand 1571 states and 7047 transitions. Second operand 11 states. [2020-01-16 19:01:47,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:47,807 INFO L93 Difference]: Finished difference Result 2950 states and 11717 transitions. [2020-01-16 19:01:47,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:47,808 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:47,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:47,815 INFO L225 Difference]: With dead ends: 2950 [2020-01-16 19:01:47,815 INFO L226 Difference]: Without dead ends: 2930 [2020-01-16 19:01:47,816 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:47,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2020-01-16 19:01:47,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1576. [2020-01-16 19:01:47,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 19:01:47,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7055 transitions. [2020-01-16 19:01:47,882 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7055 transitions. Word has length 28 [2020-01-16 19:01:47,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:47,882 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7055 transitions. [2020-01-16 19:01:47,882 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:47,882 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7055 transitions. [2020-01-16 19:01:47,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:47,884 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:47,884 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:47,885 INFO L426 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:47,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:47,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1947044018, now seen corresponding path program 168 times [2020-01-16 19:01:47,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:47,885 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6757005] [2020-01-16 19:01:47,885 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:47,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:48,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:48,398 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6757005] [2020-01-16 19:01:48,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:48,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:48,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817622285] [2020-01-16 19:01:48,398 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:48,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:48,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:48,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:48,399 INFO L87 Difference]: Start difference. First operand 1576 states and 7055 transitions. Second operand 11 states. [2020-01-16 19:01:48,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:48,599 INFO L93 Difference]: Finished difference Result 2944 states and 11701 transitions. [2020-01-16 19:01:48,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:48,600 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:48,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:48,607 INFO L225 Difference]: With dead ends: 2944 [2020-01-16 19:01:48,607 INFO L226 Difference]: Without dead ends: 2915 [2020-01-16 19:01:48,607 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:48,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2915 states. [2020-01-16 19:01:48,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2915 to 1561. [2020-01-16 19:01:48,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1561 states. [2020-01-16 19:01:48,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1561 states to 1561 states and 7024 transitions. [2020-01-16 19:01:48,673 INFO L78 Accepts]: Start accepts. Automaton has 1561 states and 7024 transitions. Word has length 28 [2020-01-16 19:01:48,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:48,673 INFO L478 AbstractCegarLoop]: Abstraction has 1561 states and 7024 transitions. [2020-01-16 19:01:48,673 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:48,673 INFO L276 IsEmpty]: Start isEmpty. Operand 1561 states and 7024 transitions. [2020-01-16 19:01:48,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:48,675 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:48,676 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:48,676 INFO L426 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:48,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:48,676 INFO L82 PathProgramCache]: Analyzing trace with hash -254171636, now seen corresponding path program 169 times [2020-01-16 19:01:48,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:48,676 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012618025] [2020-01-16 19:01:48,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:48,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:49,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:49,205 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012618025] [2020-01-16 19:01:49,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:49,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:49,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647693588] [2020-01-16 19:01:49,205 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:49,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:49,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:49,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:49,206 INFO L87 Difference]: Start difference. First operand 1561 states and 7024 transitions. Second operand 11 states. [2020-01-16 19:01:49,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:49,414 INFO L93 Difference]: Finished difference Result 2932 states and 11702 transitions. [2020-01-16 19:01:49,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:49,414 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:49,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:49,421 INFO L225 Difference]: With dead ends: 2932 [2020-01-16 19:01:49,421 INFO L226 Difference]: Without dead ends: 2917 [2020-01-16 19:01:49,421 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:49,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2917 states. [2020-01-16 19:01:49,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2917 to 1575. [2020-01-16 19:01:49,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:01:49,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7071 transitions. [2020-01-16 19:01:49,488 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7071 transitions. Word has length 28 [2020-01-16 19:01:49,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:49,488 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7071 transitions. [2020-01-16 19:01:49,488 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:49,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7071 transitions. [2020-01-16 19:01:49,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:49,490 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:49,490 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:49,490 INFO L426 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:49,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:49,491 INFO L82 PathProgramCache]: Analyzing trace with hash 490530862, now seen corresponding path program 170 times [2020-01-16 19:01:49,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:49,491 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621708797] [2020-01-16 19:01:49,491 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:49,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:50,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:50,017 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621708797] [2020-01-16 19:01:50,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:50,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:50,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004415428] [2020-01-16 19:01:50,017 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:50,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:50,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:50,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:50,018 INFO L87 Difference]: Start difference. First operand 1575 states and 7071 transitions. Second operand 11 states. [2020-01-16 19:01:50,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:50,250 INFO L93 Difference]: Finished difference Result 2933 states and 11699 transitions. [2020-01-16 19:01:50,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:50,251 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:50,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:50,258 INFO L225 Difference]: With dead ends: 2933 [2020-01-16 19:01:50,258 INFO L226 Difference]: Without dead ends: 2912 [2020-01-16 19:01:50,258 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:50,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2912 states. [2020-01-16 19:01:50,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2912 to 1570. [2020-01-16 19:01:50,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 19:01:50,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7057 transitions. [2020-01-16 19:01:50,324 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7057 transitions. Word has length 28 [2020-01-16 19:01:50,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:50,324 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7057 transitions. [2020-01-16 19:01:50,324 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:50,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7057 transitions. [2020-01-16 19:01:50,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:50,327 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:50,327 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:50,327 INFO L426 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:50,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:50,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1327257016, now seen corresponding path program 171 times [2020-01-16 19:01:50,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:50,327 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103106922] [2020-01-16 19:01:50,327 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:50,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:50,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:50,844 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103106922] [2020-01-16 19:01:50,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:50,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:50,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567825658] [2020-01-16 19:01:50,845 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:50,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:50,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:50,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:50,845 INFO L87 Difference]: Start difference. First operand 1570 states and 7057 transitions. Second operand 11 states. [2020-01-16 19:01:51,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:51,055 INFO L93 Difference]: Finished difference Result 2934 states and 11701 transitions. [2020-01-16 19:01:51,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:51,055 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:51,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:51,063 INFO L225 Difference]: With dead ends: 2934 [2020-01-16 19:01:51,063 INFO L226 Difference]: Without dead ends: 2919 [2020-01-16 19:01:51,063 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:51,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2919 states. [2020-01-16 19:01:51,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2919 to 1575. [2020-01-16 19:01:51,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:01:51,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7066 transitions. [2020-01-16 19:01:51,129 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7066 transitions. Word has length 28 [2020-01-16 19:01:51,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:51,129 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7066 transitions. [2020-01-16 19:01:51,129 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:51,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7066 transitions. [2020-01-16 19:01:51,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:51,131 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:51,131 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:51,131 INFO L426 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:51,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:51,132 INFO L82 PathProgramCache]: Analyzing trace with hash 906850478, now seen corresponding path program 172 times [2020-01-16 19:01:51,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:51,132 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512064605] [2020-01-16 19:01:51,132 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:51,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:51,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:51,656 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512064605] [2020-01-16 19:01:51,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:51,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:51,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441817440] [2020-01-16 19:01:51,656 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:51,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:51,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:51,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:51,657 INFO L87 Difference]: Start difference. First operand 1575 states and 7066 transitions. Second operand 11 states. [2020-01-16 19:01:51,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:51,857 INFO L93 Difference]: Finished difference Result 2937 states and 11702 transitions. [2020-01-16 19:01:51,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:51,857 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:51,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:51,865 INFO L225 Difference]: With dead ends: 2937 [2020-01-16 19:01:51,865 INFO L226 Difference]: Without dead ends: 2914 [2020-01-16 19:01:51,865 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:51,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2914 states. [2020-01-16 19:01:51,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2914 to 1570. [2020-01-16 19:01:51,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 19:01:51,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7052 transitions. [2020-01-16 19:01:51,931 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7052 transitions. Word has length 28 [2020-01-16 19:01:51,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:51,931 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7052 transitions. [2020-01-16 19:01:51,931 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:51,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7052 transitions. [2020-01-16 19:01:51,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:51,934 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:51,934 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:51,934 INFO L426 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:51,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:51,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1028386440, now seen corresponding path program 173 times [2020-01-16 19:01:51,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:51,934 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936014455] [2020-01-16 19:01:51,934 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:51,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:52,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:52,458 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936014455] [2020-01-16 19:01:52,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:52,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:52,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017878444] [2020-01-16 19:01:52,459 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:52,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:52,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:52,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:52,459 INFO L87 Difference]: Start difference. First operand 1570 states and 7052 transitions. Second operand 11 states. [2020-01-16 19:01:52,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:52,666 INFO L93 Difference]: Finished difference Result 2937 states and 11703 transitions. [2020-01-16 19:01:52,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:52,667 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:52,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:52,674 INFO L225 Difference]: With dead ends: 2937 [2020-01-16 19:01:52,674 INFO L226 Difference]: Without dead ends: 2921 [2020-01-16 19:01:52,675 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:52,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2020-01-16 19:01:52,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 1576. [2020-01-16 19:01:52,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 19:01:52,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7063 transitions. [2020-01-16 19:01:52,740 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7063 transitions. Word has length 28 [2020-01-16 19:01:52,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:52,741 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7063 transitions. [2020-01-16 19:01:52,741 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:52,741 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7063 transitions. [2020-01-16 19:01:52,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:52,743 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:52,743 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:52,743 INFO L426 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:52,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:52,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1777175860, now seen corresponding path program 174 times [2020-01-16 19:01:52,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:52,744 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092983605] [2020-01-16 19:01:52,744 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:52,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:53,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:53,270 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092983605] [2020-01-16 19:01:53,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:53,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:53,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699277343] [2020-01-16 19:01:53,270 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:53,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:53,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:53,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:53,271 INFO L87 Difference]: Start difference. First operand 1576 states and 7063 transitions. Second operand 11 states. [2020-01-16 19:01:53,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:53,476 INFO L93 Difference]: Finished difference Result 2939 states and 11701 transitions. [2020-01-16 19:01:53,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:53,477 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:53,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:53,485 INFO L225 Difference]: With dead ends: 2939 [2020-01-16 19:01:53,485 INFO L226 Difference]: Without dead ends: 2910 [2020-01-16 19:01:53,485 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:53,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2910 states. [2020-01-16 19:01:53,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2910 to 1565. [2020-01-16 19:01:53,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 19:01:53,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7039 transitions. [2020-01-16 19:01:53,551 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7039 transitions. Word has length 28 [2020-01-16 19:01:53,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:53,551 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7039 transitions. [2020-01-16 19:01:53,551 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:53,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7039 transitions. [2020-01-16 19:01:53,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:53,553 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:53,553 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:53,554 INFO L426 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:53,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:53,554 INFO L82 PathProgramCache]: Analyzing trace with hash -760517902, now seen corresponding path program 175 times [2020-01-16 19:01:53,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:53,554 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890556031] [2020-01-16 19:01:53,554 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:53,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:54,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:54,095 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890556031] [2020-01-16 19:01:54,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:54,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:54,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430274486] [2020-01-16 19:01:54,095 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:54,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:54,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:54,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:54,096 INFO L87 Difference]: Start difference. First operand 1565 states and 7039 transitions. Second operand 11 states. [2020-01-16 19:01:54,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:54,284 INFO L93 Difference]: Finished difference Result 2924 states and 11677 transitions. [2020-01-16 19:01:54,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:54,285 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:54,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:54,292 INFO L225 Difference]: With dead ends: 2924 [2020-01-16 19:01:54,292 INFO L226 Difference]: Without dead ends: 2909 [2020-01-16 19:01:54,293 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:54,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2909 states. [2020-01-16 19:01:54,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2909 to 1574. [2020-01-16 19:01:54,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 19:01:54,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7063 transitions. [2020-01-16 19:01:54,359 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7063 transitions. Word has length 28 [2020-01-16 19:01:54,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:54,359 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7063 transitions. [2020-01-16 19:01:54,359 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:54,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7063 transitions. [2020-01-16 19:01:54,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:54,361 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:54,361 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:54,361 INFO L426 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:54,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:54,362 INFO L82 PathProgramCache]: Analyzing trace with hash -15815404, now seen corresponding path program 176 times [2020-01-16 19:01:54,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:54,362 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64643706] [2020-01-16 19:01:54,362 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:54,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:54,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:54,899 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64643706] [2020-01-16 19:01:54,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:54,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:54,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529107121] [2020-01-16 19:01:54,899 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:54,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:54,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:54,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:54,900 INFO L87 Difference]: Start difference. First operand 1574 states and 7063 transitions. Second operand 11 states. [2020-01-16 19:01:55,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:55,091 INFO L93 Difference]: Finished difference Result 2925 states and 11674 transitions. [2020-01-16 19:01:55,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:55,091 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:55,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:55,098 INFO L225 Difference]: With dead ends: 2925 [2020-01-16 19:01:55,099 INFO L226 Difference]: Without dead ends: 2904 [2020-01-16 19:01:55,099 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:55,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2904 states. [2020-01-16 19:01:55,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2904 to 1569. [2020-01-16 19:01:55,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 19:01:55,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7050 transitions. [2020-01-16 19:01:55,164 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7050 transitions. Word has length 28 [2020-01-16 19:01:55,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:55,165 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7050 transitions. [2020-01-16 19:01:55,165 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:55,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7050 transitions. [2020-01-16 19:01:55,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:55,167 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:55,167 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:55,167 INFO L426 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:55,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:55,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1295747704, now seen corresponding path program 177 times [2020-01-16 19:01:55,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:55,167 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968575840] [2020-01-16 19:01:55,168 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:55,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:55,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:55,692 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968575840] [2020-01-16 19:01:55,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:55,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:55,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278327662] [2020-01-16 19:01:55,692 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:55,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:55,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:55,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:55,693 INFO L87 Difference]: Start difference. First operand 1569 states and 7050 transitions. Second operand 11 states. [2020-01-16 19:01:55,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:55,908 INFO L93 Difference]: Finished difference Result 2921 states and 11666 transitions. [2020-01-16 19:01:55,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:55,908 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:55,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:55,916 INFO L225 Difference]: With dead ends: 2921 [2020-01-16 19:01:55,916 INFO L226 Difference]: Without dead ends: 2906 [2020-01-16 19:01:55,917 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:55,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2906 states. [2020-01-16 19:01:55,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2906 to 1573. [2020-01-16 19:01:55,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:01:55,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7057 transitions. [2020-01-16 19:01:55,982 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7057 transitions. Word has length 28 [2020-01-16 19:01:55,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:55,982 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7057 transitions. [2020-01-16 19:01:55,982 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:55,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7057 transitions. [2020-01-16 19:01:55,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:55,984 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:55,984 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:55,984 INFO L426 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:55,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:55,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1122500012, now seen corresponding path program 178 times [2020-01-16 19:01:55,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:55,985 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841043672] [2020-01-16 19:01:55,985 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:55,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:56,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:56,511 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841043672] [2020-01-16 19:01:56,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:56,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:56,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134732477] [2020-01-16 19:01:56,511 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:56,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:56,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:56,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:56,512 INFO L87 Difference]: Start difference. First operand 1573 states and 7057 transitions. Second operand 11 states. [2020-01-16 19:01:56,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:56,699 INFO L93 Difference]: Finished difference Result 2920 states and 11660 transitions. [2020-01-16 19:01:56,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:56,699 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:56,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:56,706 INFO L225 Difference]: With dead ends: 2920 [2020-01-16 19:01:56,707 INFO L226 Difference]: Without dead ends: 2902 [2020-01-16 19:01:56,707 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:56,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2902 states. [2020-01-16 19:01:56,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2902 to 1569. [2020-01-16 19:01:56,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 19:01:56,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7046 transitions. [2020-01-16 19:01:56,773 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7046 transitions. Word has length 28 [2020-01-16 19:01:56,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:56,773 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7046 transitions. [2020-01-16 19:01:56,773 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:56,773 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7046 transitions. [2020-01-16 19:01:56,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:56,775 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:56,775 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:56,775 INFO L426 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:56,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:56,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1059895752, now seen corresponding path program 179 times [2020-01-16 19:01:56,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:56,776 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064734271] [2020-01-16 19:01:56,776 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:56,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:57,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:57,296 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064734271] [2020-01-16 19:01:57,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:57,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:57,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791300219] [2020-01-16 19:01:57,296 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:57,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:57,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:57,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:57,297 INFO L87 Difference]: Start difference. First operand 1569 states and 7046 transitions. Second operand 11 states. [2020-01-16 19:01:57,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:57,495 INFO L93 Difference]: Finished difference Result 2923 states and 11666 transitions. [2020-01-16 19:01:57,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:57,496 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:57,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:57,503 INFO L225 Difference]: With dead ends: 2923 [2020-01-16 19:01:57,503 INFO L226 Difference]: Without dead ends: 2907 [2020-01-16 19:01:57,503 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:57,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2907 states. [2020-01-16 19:01:57,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2907 to 1573. [2020-01-16 19:01:57,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:01:57,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7053 transitions. [2020-01-16 19:01:57,569 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7053 transitions. Word has length 28 [2020-01-16 19:01:57,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:57,569 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7053 transitions. [2020-01-16 19:01:57,569 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:57,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7053 transitions. [2020-01-16 19:01:57,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:57,572 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:57,572 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:57,572 INFO L426 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:57,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:57,572 INFO L82 PathProgramCache]: Analyzing trace with hash 488440946, now seen corresponding path program 180 times [2020-01-16 19:01:57,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:57,573 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200989282] [2020-01-16 19:01:57,573 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:57,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:58,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:58,099 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200989282] [2020-01-16 19:01:58,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:58,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:58,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64573195] [2020-01-16 19:01:58,100 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:58,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:58,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:58,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:58,101 INFO L87 Difference]: Start difference. First operand 1573 states and 7053 transitions. Second operand 11 states. [2020-01-16 19:01:58,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:58,285 INFO L93 Difference]: Finished difference Result 2921 states and 11658 transitions. [2020-01-16 19:01:58,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:58,289 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:58,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:58,296 INFO L225 Difference]: With dead ends: 2921 [2020-01-16 19:01:58,296 INFO L226 Difference]: Without dead ends: 2899 [2020-01-16 19:01:58,296 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:58,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-01-16 19:01:58,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1565. [2020-01-16 19:01:58,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 19:01:58,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7035 transitions. [2020-01-16 19:01:58,362 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7035 transitions. Word has length 28 [2020-01-16 19:01:58,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:58,362 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7035 transitions. [2020-01-16 19:01:58,362 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:58,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7035 transitions. [2020-01-16 19:01:58,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:58,365 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:58,365 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:58,365 INFO L426 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:58,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:58,365 INFO L82 PathProgramCache]: Analyzing trace with hash -739511694, now seen corresponding path program 181 times [2020-01-16 19:01:58,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:58,366 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626652229] [2020-01-16 19:01:58,366 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:58,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:58,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:58,886 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626652229] [2020-01-16 19:01:58,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:58,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:58,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92017902] [2020-01-16 19:01:58,886 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:58,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:58,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:58,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:58,887 INFO L87 Difference]: Start difference. First operand 1565 states and 7035 transitions. Second operand 11 states. [2020-01-16 19:01:59,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:59,068 INFO L93 Difference]: Finished difference Result 2928 states and 11681 transitions. [2020-01-16 19:01:59,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:59,069 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:59,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:59,077 INFO L225 Difference]: With dead ends: 2928 [2020-01-16 19:01:59,077 INFO L226 Difference]: Without dead ends: 2913 [2020-01-16 19:01:59,077 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:59,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2913 states. [2020-01-16 19:01:59,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2913 to 1574. [2020-01-16 19:01:59,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 19:01:59,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7059 transitions. [2020-01-16 19:01:59,148 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7059 transitions. Word has length 28 [2020-01-16 19:01:59,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:59,149 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7059 transitions. [2020-01-16 19:01:59,149 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:59,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7059 transitions. [2020-01-16 19:01:59,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:59,151 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:59,151 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:59,151 INFO L426 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:59,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:59,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1494595800, now seen corresponding path program 182 times [2020-01-16 19:01:59,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:59,152 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698497980] [2020-01-16 19:01:59,152 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:59,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:01:59,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:01:59,667 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698497980] [2020-01-16 19:01:59,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:01:59,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:01:59,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257499400] [2020-01-16 19:01:59,668 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:01:59,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:01:59,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:01:59,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:01:59,668 INFO L87 Difference]: Start difference. First operand 1574 states and 7059 transitions. Second operand 11 states. [2020-01-16 19:01:59,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:01:59,874 INFO L93 Difference]: Finished difference Result 2931 states and 11682 transitions. [2020-01-16 19:01:59,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:01:59,875 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:01:59,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:01:59,882 INFO L225 Difference]: With dead ends: 2931 [2020-01-16 19:01:59,882 INFO L226 Difference]: Without dead ends: 2908 [2020-01-16 19:01:59,882 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:01:59,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2020-01-16 19:01:59,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 1569. [2020-01-16 19:01:59,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 19:01:59,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7046 transitions. [2020-01-16 19:01:59,949 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7046 transitions. Word has length 28 [2020-01-16 19:01:59,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:01:59,949 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7046 transitions. [2020-01-16 19:01:59,949 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:01:59,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7046 transitions. [2020-01-16 19:01:59,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:01:59,951 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:01:59,951 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:01:59,952 INFO L426 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:01:59,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:01:59,952 INFO L82 PathProgramCache]: Analyzing trace with hash -201656116, now seen corresponding path program 183 times [2020-01-16 19:01:59,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:01:59,952 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541368326] [2020-01-16 19:01:59,952 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:01:59,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:00,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:00,477 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541368326] [2020-01-16 19:02:00,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:00,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:00,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716051575] [2020-01-16 19:02:00,477 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:00,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:00,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:00,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:00,478 INFO L87 Difference]: Start difference. First operand 1569 states and 7046 transitions. Second operand 11 states. [2020-01-16 19:02:00,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:00,684 INFO L93 Difference]: Finished difference Result 2923 states and 11666 transitions. [2020-01-16 19:02:00,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:00,685 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:00,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:00,692 INFO L225 Difference]: With dead ends: 2923 [2020-01-16 19:02:00,693 INFO L226 Difference]: Without dead ends: 2908 [2020-01-16 19:02:00,693 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:00,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2020-01-16 19:02:00,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 1573. [2020-01-16 19:02:00,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:02:00,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7053 transitions. [2020-01-16 19:02:00,758 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7053 transitions. Word has length 28 [2020-01-16 19:02:00,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:00,758 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7053 transitions. [2020-01-16 19:02:00,758 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:00,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7053 transitions. [2020-01-16 19:02:00,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:00,761 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:00,761 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:00,761 INFO L426 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:00,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:00,761 INFO L82 PathProgramCache]: Analyzing trace with hash -28408424, now seen corresponding path program 184 times [2020-01-16 19:02:00,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:00,762 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500683662] [2020-01-16 19:02:00,762 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:00,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:01,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:01,306 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500683662] [2020-01-16 19:02:01,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:01,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:01,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509215525] [2020-01-16 19:02:01,307 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:01,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:01,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:01,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:01,307 INFO L87 Difference]: Start difference. First operand 1573 states and 7053 transitions. Second operand 11 states. [2020-01-16 19:02:01,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:01,524 INFO L93 Difference]: Finished difference Result 2922 states and 11660 transitions. [2020-01-16 19:02:01,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:01,525 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:01,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:01,532 INFO L225 Difference]: With dead ends: 2922 [2020-01-16 19:02:01,532 INFO L226 Difference]: Without dead ends: 2904 [2020-01-16 19:02:01,533 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:01,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2904 states. [2020-01-16 19:02:01,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2904 to 1569. [2020-01-16 19:02:01,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 19:02:01,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7042 transitions. [2020-01-16 19:02:01,602 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7042 transitions. Word has length 28 [2020-01-16 19:02:01,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:01,602 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7042 transitions. [2020-01-16 19:02:01,602 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:01,602 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7042 transitions. [2020-01-16 19:02:01,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:01,605 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:01,606 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:01,606 INFO L426 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:01,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:01,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1724660340, now seen corresponding path program 185 times [2020-01-16 19:02:01,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:01,606 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917434892] [2020-01-16 19:02:01,606 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:01,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:02,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:02,126 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917434892] [2020-01-16 19:02:02,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:02,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:02,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710936226] [2020-01-16 19:02:02,126 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:02,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:02,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:02,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:02,127 INFO L87 Difference]: Start difference. First operand 1569 states and 7042 transitions. Second operand 11 states. [2020-01-16 19:02:02,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:02,350 INFO L93 Difference]: Finished difference Result 2929 states and 11674 transitions. [2020-01-16 19:02:02,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:02,350 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:02,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:02,358 INFO L225 Difference]: With dead ends: 2929 [2020-01-16 19:02:02,358 INFO L226 Difference]: Without dead ends: 2911 [2020-01-16 19:02:02,359 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:02,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2020-01-16 19:02:02,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 1573. [2020-01-16 19:02:02,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:02:02,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7049 transitions. [2020-01-16 19:02:02,425 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7049 transitions. Word has length 28 [2020-01-16 19:02:02,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:02,425 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7049 transitions. [2020-01-16 19:02:02,425 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:02,425 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7049 transitions. [2020-01-16 19:02:02,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:02,427 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:02,427 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:02,427 INFO L426 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:02,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:02,428 INFO L82 PathProgramCache]: Analyzing trace with hash 509447154, now seen corresponding path program 186 times [2020-01-16 19:02:02,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:02,428 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277775459] [2020-01-16 19:02:02,429 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:02,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:02,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:02,952 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277775459] [2020-01-16 19:02:02,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:02,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:02,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877378144] [2020-01-16 19:02:02,952 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:02,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:02,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:02,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:02,953 INFO L87 Difference]: Start difference. First operand 1573 states and 7049 transitions. Second operand 11 states. [2020-01-16 19:02:03,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:03,197 INFO L93 Difference]: Finished difference Result 2925 states and 11662 transitions. [2020-01-16 19:02:03,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:03,198 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:03,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:03,205 INFO L225 Difference]: With dead ends: 2925 [2020-01-16 19:02:03,205 INFO L226 Difference]: Without dead ends: 2903 [2020-01-16 19:02:03,205 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:03,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2903 states. [2020-01-16 19:02:03,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2903 to 1565. [2020-01-16 19:02:03,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 19:02:03,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7031 transitions. [2020-01-16 19:02:03,271 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7031 transitions. Word has length 28 [2020-01-16 19:02:03,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:03,271 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7031 transitions. [2020-01-16 19:02:03,271 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:03,272 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7031 transitions. [2020-01-16 19:02:03,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:03,274 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:03,274 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:03,274 INFO L426 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:03,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:03,274 INFO L82 PathProgramCache]: Analyzing trace with hash 15693908, now seen corresponding path program 187 times [2020-01-16 19:02:03,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:03,274 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993235269] [2020-01-16 19:02:03,274 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:03,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:03,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:03,780 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993235269] [2020-01-16 19:02:03,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:03,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:03,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6778085] [2020-01-16 19:02:03,780 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:03,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:03,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:03,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:03,780 INFO L87 Difference]: Start difference. First operand 1565 states and 7031 transitions. Second operand 11 states. [2020-01-16 19:02:03,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:03,970 INFO L93 Difference]: Finished difference Result 2933 states and 11689 transitions. [2020-01-16 19:02:03,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:03,970 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:03,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:03,978 INFO L225 Difference]: With dead ends: 2933 [2020-01-16 19:02:03,978 INFO L226 Difference]: Without dead ends: 2917 [2020-01-16 19:02:03,979 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:04,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2917 states. [2020-01-16 19:02:04,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2917 to 1575. [2020-01-16 19:02:04,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:02:04,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7057 transitions. [2020-01-16 19:02:04,045 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7057 transitions. Word has length 28 [2020-01-16 19:02:04,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:04,045 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7057 transitions. [2020-01-16 19:02:04,045 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:04,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7057 transitions. [2020-01-16 19:02:04,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:04,048 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:04,048 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:04,048 INFO L426 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:04,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:04,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1505098904, now seen corresponding path program 188 times [2020-01-16 19:02:04,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:04,048 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584939906] [2020-01-16 19:02:04,048 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:04,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:04,565 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 19:02:04,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:04,573 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584939906] [2020-01-16 19:02:04,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:04,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:04,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203855346] [2020-01-16 19:02:04,574 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:04,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:04,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:04,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:04,574 INFO L87 Difference]: Start difference. First operand 1575 states and 7057 transitions. Second operand 11 states. [2020-01-16 19:02:04,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:04,761 INFO L93 Difference]: Finished difference Result 2935 states and 11687 transitions. [2020-01-16 19:02:04,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:04,762 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:04,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:04,769 INFO L225 Difference]: With dead ends: 2935 [2020-01-16 19:02:04,769 INFO L226 Difference]: Without dead ends: 2911 [2020-01-16 19:02:04,770 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:04,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2020-01-16 19:02:04,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 1569. [2020-01-16 19:02:04,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 19:02:04,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7042 transitions. [2020-01-16 19:02:04,836 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7042 transitions. Word has length 28 [2020-01-16 19:02:04,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:04,836 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7042 transitions. [2020-01-16 19:02:04,837 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:04,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7042 transitions. [2020-01-16 19:02:04,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:04,839 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:04,839 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:04,839 INFO L426 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:04,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:04,839 INFO L82 PathProgramCache]: Analyzing trace with hash 553549486, now seen corresponding path program 189 times [2020-01-16 19:02:04,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:04,839 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383567101] [2020-01-16 19:02:04,840 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:04,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:05,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:05,369 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383567101] [2020-01-16 19:02:05,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:05,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:05,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081963834] [2020-01-16 19:02:05,369 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:05,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:05,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:05,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:05,370 INFO L87 Difference]: Start difference. First operand 1569 states and 7042 transitions. Second operand 11 states. [2020-01-16 19:02:05,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:05,570 INFO L93 Difference]: Finished difference Result 2927 states and 11671 transitions. [2020-01-16 19:02:05,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:05,571 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:05,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:05,578 INFO L225 Difference]: With dead ends: 2927 [2020-01-16 19:02:05,578 INFO L226 Difference]: Without dead ends: 2911 [2020-01-16 19:02:05,579 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:05,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2020-01-16 19:02:05,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 1573. [2020-01-16 19:02:05,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:02:05,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7049 transitions. [2020-01-16 19:02:05,663 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7049 transitions. Word has length 28 [2020-01-16 19:02:05,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:05,664 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7049 transitions. [2020-01-16 19:02:05,664 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:05,664 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7049 transitions. [2020-01-16 19:02:05,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:05,666 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:05,666 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:05,666 INFO L426 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:05,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:05,666 INFO L82 PathProgramCache]: Analyzing trace with hash -17905320, now seen corresponding path program 190 times [2020-01-16 19:02:05,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:05,667 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224659898] [2020-01-16 19:02:05,667 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:05,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:06,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:06,181 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224659898] [2020-01-16 19:02:06,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:06,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:06,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754287792] [2020-01-16 19:02:06,182 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:06,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:06,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:06,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:06,182 INFO L87 Difference]: Start difference. First operand 1573 states and 7049 transitions. Second operand 11 states. [2020-01-16 19:02:06,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:06,429 INFO L93 Difference]: Finished difference Result 2925 states and 11663 transitions. [2020-01-16 19:02:06,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:06,430 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:06,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:06,437 INFO L225 Difference]: With dead ends: 2925 [2020-01-16 19:02:06,437 INFO L226 Difference]: Without dead ends: 2907 [2020-01-16 19:02:06,437 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:06,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2907 states. [2020-01-16 19:02:06,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2907 to 1569. [2020-01-16 19:02:06,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 19:02:06,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7038 transitions. [2020-01-16 19:02:06,503 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7038 transitions. Word has length 28 [2020-01-16 19:02:06,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:06,503 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7038 transitions. [2020-01-16 19:02:06,503 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:06,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7038 transitions. [2020-01-16 19:02:06,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:06,505 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:06,505 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:06,505 INFO L426 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:06,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:06,506 INFO L82 PathProgramCache]: Analyzing trace with hash 969869102, now seen corresponding path program 191 times [2020-01-16 19:02:06,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:06,506 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443439319] [2020-01-16 19:02:06,506 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:06,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:07,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:07,024 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443439319] [2020-01-16 19:02:07,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:07,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:07,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436148149] [2020-01-16 19:02:07,024 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:07,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:07,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:07,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:07,025 INFO L87 Difference]: Start difference. First operand 1569 states and 7038 transitions. Second operand 11 states. [2020-01-16 19:02:07,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:07,269 INFO L93 Difference]: Finished difference Result 2931 states and 11675 transitions. [2020-01-16 19:02:07,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:07,269 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:07,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:07,276 INFO L225 Difference]: With dead ends: 2931 [2020-01-16 19:02:07,277 INFO L226 Difference]: Without dead ends: 2913 [2020-01-16 19:02:07,277 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:07,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2913 states. [2020-01-16 19:02:07,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2913 to 1573. [2020-01-16 19:02:07,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:02:07,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7045 transitions. [2020-01-16 19:02:07,343 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7045 transitions. Word has length 28 [2020-01-16 19:02:07,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:07,344 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7045 transitions. [2020-01-16 19:02:07,344 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:07,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7045 transitions. [2020-01-16 19:02:07,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:07,346 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:07,346 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:07,346 INFO L426 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:07,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:07,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1090990700, now seen corresponding path program 192 times [2020-01-16 19:02:07,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:07,347 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694014312] [2020-01-16 19:02:07,347 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:07,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:07,861 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 19:02:07,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:07,869 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694014312] [2020-01-16 19:02:07,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:07,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:07,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077465893] [2020-01-16 19:02:07,869 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:07,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:07,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:07,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:07,870 INFO L87 Difference]: Start difference. First operand 1573 states and 7045 transitions. Second operand 11 states. [2020-01-16 19:02:08,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:08,079 INFO L93 Difference]: Finished difference Result 2927 states and 11663 transitions. [2020-01-16 19:02:08,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:08,080 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:08,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:08,087 INFO L225 Difference]: With dead ends: 2927 [2020-01-16 19:02:08,088 INFO L226 Difference]: Without dead ends: 2901 [2020-01-16 19:02:08,088 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:08,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2901 states. [2020-01-16 19:02:08,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2901 to 1561. [2020-01-16 19:02:08,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1561 states. [2020-01-16 19:02:08,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1561 states to 1561 states and 7020 transitions. [2020-01-16 19:02:08,154 INFO L78 Accepts]: Start accepts. Automaton has 1561 states and 7020 transitions. Word has length 28 [2020-01-16 19:02:08,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:08,154 INFO L478 AbstractCegarLoop]: Abstraction has 1561 states and 7020 transitions. [2020-01-16 19:02:08,154 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:08,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1561 states and 7020 transitions. [2020-01-16 19:02:08,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:08,157 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:08,157 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:08,157 INFO L426 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:08,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:08,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1682365546, now seen corresponding path program 193 times [2020-01-16 19:02:08,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:08,157 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91511131] [2020-01-16 19:02:08,157 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:08,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:08,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:08,696 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91511131] [2020-01-16 19:02:08,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:08,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:08,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775373020] [2020-01-16 19:02:08,696 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:08,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:08,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:08,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:08,697 INFO L87 Difference]: Start difference. First operand 1561 states and 7020 transitions. Second operand 11 states. [2020-01-16 19:02:08,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:08,874 INFO L93 Difference]: Finished difference Result 2965 states and 11770 transitions. [2020-01-16 19:02:08,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:08,875 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:08,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:08,882 INFO L225 Difference]: With dead ends: 2965 [2020-01-16 19:02:08,882 INFO L226 Difference]: Without dead ends: 2950 [2020-01-16 19:02:08,882 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:08,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2020-01-16 19:02:08,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 1580. [2020-01-16 19:02:08,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 19:02:08,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7081 transitions. [2020-01-16 19:02:08,948 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7081 transitions. Word has length 28 [2020-01-16 19:02:08,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:08,949 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7081 transitions. [2020-01-16 19:02:08,949 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:08,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7081 transitions. [2020-01-16 19:02:08,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:08,951 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:08,951 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:08,951 INFO L426 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:08,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:08,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1123196754, now seen corresponding path program 194 times [2020-01-16 19:02:08,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:08,953 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454415405] [2020-01-16 19:02:08,953 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:08,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:09,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:09,494 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454415405] [2020-01-16 19:02:09,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:09,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:09,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413851426] [2020-01-16 19:02:09,494 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:09,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:09,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:09,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:09,495 INFO L87 Difference]: Start difference. First operand 1580 states and 7081 transitions. Second operand 11 states. [2020-01-16 19:02:09,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:09,661 INFO L93 Difference]: Finished difference Result 2970 states and 11774 transitions. [2020-01-16 19:02:09,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:09,662 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:09,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:09,669 INFO L225 Difference]: With dead ends: 2970 [2020-01-16 19:02:09,669 INFO L226 Difference]: Without dead ends: 2944 [2020-01-16 19:02:09,670 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:09,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2944 states. [2020-01-16 19:02:09,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2944 to 1574. [2020-01-16 19:02:09,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 19:02:09,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7064 transitions. [2020-01-16 19:02:09,735 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7064 transitions. Word has length 28 [2020-01-16 19:02:09,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:09,736 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7064 transitions. [2020-01-16 19:02:09,736 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:09,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7064 transitions. [2020-01-16 19:02:09,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:09,738 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:09,738 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:09,738 INFO L426 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:09,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:09,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1001660792, now seen corresponding path program 195 times [2020-01-16 19:02:09,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:09,739 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822776606] [2020-01-16 19:02:09,739 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:09,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:10,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:10,271 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822776606] [2020-01-16 19:02:10,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:10,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:10,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125471921] [2020-01-16 19:02:10,271 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:10,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:10,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:10,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:10,272 INFO L87 Difference]: Start difference. First operand 1574 states and 7064 transitions. Second operand 11 states. [2020-01-16 19:02:10,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:10,489 INFO L93 Difference]: Finished difference Result 2962 states and 11759 transitions. [2020-01-16 19:02:10,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:10,490 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:10,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:10,497 INFO L225 Difference]: With dead ends: 2962 [2020-01-16 19:02:10,497 INFO L226 Difference]: Without dead ends: 2947 [2020-01-16 19:02:10,497 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:10,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2947 states. [2020-01-16 19:02:10,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2947 to 1579. [2020-01-16 19:02:10,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 19:02:10,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7073 transitions. [2020-01-16 19:02:10,586 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7073 transitions. Word has length 28 [2020-01-16 19:02:10,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:10,586 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7073 transitions. [2020-01-16 19:02:10,586 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:10,587 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7073 transitions. [2020-01-16 19:02:10,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:10,589 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:10,589 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:10,589 INFO L426 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:10,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:10,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1232446702, now seen corresponding path program 196 times [2020-01-16 19:02:10,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:10,590 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392006310] [2020-01-16 19:02:10,590 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:10,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:11,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:11,107 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392006310] [2020-01-16 19:02:11,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:11,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:11,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188440930] [2020-01-16 19:02:11,108 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:11,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:11,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:11,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:11,108 INFO L87 Difference]: Start difference. First operand 1579 states and 7073 transitions. Second operand 11 states. [2020-01-16 19:02:11,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:11,309 INFO L93 Difference]: Finished difference Result 2965 states and 11760 transitions. [2020-01-16 19:02:11,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:11,310 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:11,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:11,317 INFO L225 Difference]: With dead ends: 2965 [2020-01-16 19:02:11,317 INFO L226 Difference]: Without dead ends: 2942 [2020-01-16 19:02:11,317 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:11,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2020-01-16 19:02:11,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 1574. [2020-01-16 19:02:11,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 19:02:11,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7059 transitions. [2020-01-16 19:02:11,385 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7059 transitions. Word has length 28 [2020-01-16 19:02:11,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:11,385 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7059 transitions. [2020-01-16 19:02:11,385 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:11,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7059 transitions. [2020-01-16 19:02:11,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:11,387 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:11,387 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:11,388 INFO L426 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:11,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:11,388 INFO L82 PathProgramCache]: Analyzing trace with hash -585341176, now seen corresponding path program 197 times [2020-01-16 19:02:11,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:11,388 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58479774] [2020-01-16 19:02:11,388 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:11,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:11,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:11,918 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58479774] [2020-01-16 19:02:11,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:11,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:11,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709021514] [2020-01-16 19:02:11,918 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:11,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:11,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:11,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:11,919 INFO L87 Difference]: Start difference. First operand 1574 states and 7059 transitions. Second operand 11 states. [2020-01-16 19:02:12,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:12,061 INFO L93 Difference]: Finished difference Result 2977 states and 11784 transitions. [2020-01-16 19:02:12,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:12,062 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:12,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:12,069 INFO L225 Difference]: With dead ends: 2977 [2020-01-16 19:02:12,069 INFO L226 Difference]: Without dead ends: 2957 [2020-01-16 19:02:12,070 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:12,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2957 states. [2020-01-16 19:02:12,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2957 to 1584. [2020-01-16 19:02:12,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1584 states. [2020-01-16 19:02:12,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 7076 transitions. [2020-01-16 19:02:12,140 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 7076 transitions. Word has length 28 [2020-01-16 19:02:12,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:12,140 INFO L478 AbstractCegarLoop]: Abstraction has 1584 states and 7076 transitions. [2020-01-16 19:02:12,140 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:12,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 7076 transitions. [2020-01-16 19:02:12,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:12,142 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:12,142 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:12,143 INFO L426 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:12,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:12,143 INFO L82 PathProgramCache]: Analyzing trace with hash 159361322, now seen corresponding path program 198 times [2020-01-16 19:02:12,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:12,143 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211516460] [2020-01-16 19:02:12,143 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:12,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:12,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:12,687 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211516460] [2020-01-16 19:02:12,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:12,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:12,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550577235] [2020-01-16 19:02:12,687 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:12,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:12,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:12,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:12,688 INFO L87 Difference]: Start difference. First operand 1584 states and 7076 transitions. Second operand 11 states. [2020-01-16 19:02:12,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:12,894 INFO L93 Difference]: Finished difference Result 2975 states and 11772 transitions. [2020-01-16 19:02:12,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:12,894 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:12,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:12,901 INFO L225 Difference]: With dead ends: 2975 [2020-01-16 19:02:12,902 INFO L226 Difference]: Without dead ends: 2940 [2020-01-16 19:02:12,902 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:12,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2940 states. [2020-01-16 19:02:12,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2940 to 1567. [2020-01-16 19:02:12,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 19:02:12,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7040 transitions. [2020-01-16 19:02:12,971 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7040 transitions. Word has length 28 [2020-01-16 19:02:12,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:12,971 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7040 transitions. [2020-01-16 19:02:12,971 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:12,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7040 transitions. [2020-01-16 19:02:12,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:12,973 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:12,973 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:12,973 INFO L426 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:12,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:12,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1176019280, now seen corresponding path program 199 times [2020-01-16 19:02:12,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:12,974 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899197077] [2020-01-16 19:02:12,974 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:12,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:13,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:13,505 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899197077] [2020-01-16 19:02:13,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:13,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:13,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091058519] [2020-01-16 19:02:13,506 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:13,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:13,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:13,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:13,506 INFO L87 Difference]: Start difference. First operand 1567 states and 7040 transitions. Second operand 11 states. [2020-01-16 19:02:13,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:13,715 INFO L93 Difference]: Finished difference Result 2953 states and 11734 transitions. [2020-01-16 19:02:13,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:13,716 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:13,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:13,723 INFO L225 Difference]: With dead ends: 2953 [2020-01-16 19:02:13,723 INFO L226 Difference]: Without dead ends: 2938 [2020-01-16 19:02:13,724 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:13,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2020-01-16 19:02:13,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 1578. [2020-01-16 19:02:13,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 19:02:13,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7069 transitions. [2020-01-16 19:02:13,792 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7069 transitions. Word has length 28 [2020-01-16 19:02:13,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:13,792 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7069 transitions. [2020-01-16 19:02:13,792 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:13,792 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7069 transitions. [2020-01-16 19:02:13,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:13,794 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:13,794 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:13,794 INFO L426 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:13,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:13,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1629543020, now seen corresponding path program 200 times [2020-01-16 19:02:13,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:13,795 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768462956] [2020-01-16 19:02:13,795 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:13,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:14,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:14,338 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768462956] [2020-01-16 19:02:14,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:14,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:14,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949796888] [2020-01-16 19:02:14,338 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:14,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:14,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:14,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:14,339 INFO L87 Difference]: Start difference. First operand 1578 states and 7069 transitions. Second operand 11 states. [2020-01-16 19:02:14,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:14,484 INFO L93 Difference]: Finished difference Result 2958 states and 11738 transitions. [2020-01-16 19:02:14,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:14,485 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:14,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:14,492 INFO L225 Difference]: With dead ends: 2958 [2020-01-16 19:02:14,493 INFO L226 Difference]: Without dead ends: 2932 [2020-01-16 19:02:14,493 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:14,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2932 states. [2020-01-16 19:02:14,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2932 to 1572. [2020-01-16 19:02:14,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 19:02:14,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7053 transitions. [2020-01-16 19:02:14,561 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7053 transitions. Word has length 28 [2020-01-16 19:02:14,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:14,561 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7053 transitions. [2020-01-16 19:02:14,561 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:14,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7053 transitions. [2020-01-16 19:02:14,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:14,564 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:14,564 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:14,564 INFO L426 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:14,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:14,564 INFO L82 PathProgramCache]: Analyzing trace with hash -970151480, now seen corresponding path program 201 times [2020-01-16 19:02:14,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:14,564 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503345010] [2020-01-16 19:02:14,565 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:14,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:15,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:15,092 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503345010] [2020-01-16 19:02:15,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:15,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:15,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698273539] [2020-01-16 19:02:15,092 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:15,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:15,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:15,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:15,092 INFO L87 Difference]: Start difference. First operand 1572 states and 7053 transitions. Second operand 11 states. [2020-01-16 19:02:15,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:15,301 INFO L93 Difference]: Finished difference Result 2945 states and 11713 transitions. [2020-01-16 19:02:15,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:15,301 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:15,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:15,309 INFO L225 Difference]: With dead ends: 2945 [2020-01-16 19:02:15,309 INFO L226 Difference]: Without dead ends: 2930 [2020-01-16 19:02:15,309 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:15,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2020-01-16 19:02:15,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1576. [2020-01-16 19:02:15,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 19:02:15,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7060 transitions. [2020-01-16 19:02:15,377 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7060 transitions. Word has length 28 [2020-01-16 19:02:15,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:15,377 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7060 transitions. [2020-01-16 19:02:15,377 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:15,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7060 transitions. [2020-01-16 19:02:15,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:15,380 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:15,380 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:15,380 INFO L426 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:15,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:15,380 INFO L82 PathProgramCache]: Analyzing trace with hash -796903788, now seen corresponding path program 202 times [2020-01-16 19:02:15,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:15,380 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5061328] [2020-01-16 19:02:15,381 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:15,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:15,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:15,936 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5061328] [2020-01-16 19:02:15,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:15,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:15,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257153449] [2020-01-16 19:02:15,937 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:15,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:15,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:15,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:15,938 INFO L87 Difference]: Start difference. First operand 1576 states and 7060 transitions. Second operand 11 states. [2020-01-16 19:02:16,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:16,128 INFO L93 Difference]: Finished difference Result 2944 states and 11707 transitions. [2020-01-16 19:02:16,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:16,129 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:16,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:16,136 INFO L225 Difference]: With dead ends: 2944 [2020-01-16 19:02:16,136 INFO L226 Difference]: Without dead ends: 2926 [2020-01-16 19:02:16,137 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:16,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2020-01-16 19:02:16,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 1572. [2020-01-16 19:02:16,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 19:02:16,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7049 transitions. [2020-01-16 19:02:16,206 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7049 transitions. Word has length 28 [2020-01-16 19:02:16,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:16,206 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7049 transitions. [2020-01-16 19:02:16,206 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:16,207 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7049 transitions. [2020-01-16 19:02:16,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:16,209 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:16,209 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:16,209 INFO L426 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:16,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:16,209 INFO L82 PathProgramCache]: Analyzing trace with hash -553831864, now seen corresponding path program 203 times [2020-01-16 19:02:16,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:16,209 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131951920] [2020-01-16 19:02:16,210 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:16,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:16,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:16,739 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131951920] [2020-01-16 19:02:16,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:16,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:16,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427777552] [2020-01-16 19:02:16,740 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:16,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:16,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:16,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:16,740 INFO L87 Difference]: Start difference. First operand 1572 states and 7049 transitions. Second operand 11 states. [2020-01-16 19:02:16,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:16,909 INFO L93 Difference]: Finished difference Result 2956 states and 11729 transitions. [2020-01-16 19:02:16,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:16,910 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:16,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:16,917 INFO L225 Difference]: With dead ends: 2956 [2020-01-16 19:02:16,917 INFO L226 Difference]: Without dead ends: 2936 [2020-01-16 19:02:16,917 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:16,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2936 states. [2020-01-16 19:02:16,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2936 to 1577. [2020-01-16 19:02:16,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 19:02:16,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7057 transitions. [2020-01-16 19:02:16,983 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7057 transitions. Word has length 28 [2020-01-16 19:02:16,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:16,984 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7057 transitions. [2020-01-16 19:02:16,984 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:16,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7057 transitions. [2020-01-16 19:02:16,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:16,986 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:16,986 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:16,986 INFO L426 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:16,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:16,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1869989168, now seen corresponding path program 204 times [2020-01-16 19:02:16,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:16,986 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545772441] [2020-01-16 19:02:16,987 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:16,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:17,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:17,503 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545772441] [2020-01-16 19:02:17,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:17,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:17,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220232757] [2020-01-16 19:02:17,503 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:17,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:17,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:17,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:17,504 INFO L87 Difference]: Start difference. First operand 1577 states and 7057 transitions. Second operand 11 states. [2020-01-16 19:02:17,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:17,692 INFO L93 Difference]: Finished difference Result 2950 states and 11713 transitions. [2020-01-16 19:02:17,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:17,693 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:17,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:17,700 INFO L225 Difference]: With dead ends: 2950 [2020-01-16 19:02:17,700 INFO L226 Difference]: Without dead ends: 2926 [2020-01-16 19:02:17,700 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:17,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2020-01-16 19:02:17,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 1567. [2020-01-16 19:02:17,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 19:02:17,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7035 transitions. [2020-01-16 19:02:17,767 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7035 transitions. Word has length 28 [2020-01-16 19:02:17,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:17,767 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7035 transitions. [2020-01-16 19:02:17,767 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:17,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7035 transitions. [2020-01-16 19:02:17,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:17,770 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:17,770 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:17,770 INFO L426 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:17,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:17,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1186522384, now seen corresponding path program 205 times [2020-01-16 19:02:17,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:17,770 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753561256] [2020-01-16 19:02:17,770 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:17,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:18,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:18,292 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753561256] [2020-01-16 19:02:18,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:18,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:18,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021121892] [2020-01-16 19:02:18,292 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:18,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:18,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:18,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:18,293 INFO L87 Difference]: Start difference. First operand 1567 states and 7035 transitions. Second operand 11 states. [2020-01-16 19:02:18,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:18,478 INFO L93 Difference]: Finished difference Result 2945 states and 11714 transitions. [2020-01-16 19:02:18,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:18,478 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:18,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:18,485 INFO L225 Difference]: With dead ends: 2945 [2020-01-16 19:02:18,485 INFO L226 Difference]: Without dead ends: 2930 [2020-01-16 19:02:18,485 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:18,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2020-01-16 19:02:18,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1576. [2020-01-16 19:02:18,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 19:02:18,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7059 transitions. [2020-01-16 19:02:18,560 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7059 transitions. Word has length 28 [2020-01-16 19:02:18,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:18,560 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7059 transitions. [2020-01-16 19:02:18,560 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:18,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7059 transitions. [2020-01-16 19:02:18,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:18,562 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:18,562 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:18,563 INFO L426 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:18,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:18,563 INFO L82 PathProgramCache]: Analyzing trace with hash -874337418, now seen corresponding path program 206 times [2020-01-16 19:02:18,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:18,563 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56383814] [2020-01-16 19:02:18,563 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:18,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:19,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:19,075 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56383814] [2020-01-16 19:02:19,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:19,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:19,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332091444] [2020-01-16 19:02:19,075 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:19,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:19,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:19,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:19,076 INFO L87 Difference]: Start difference. First operand 1576 states and 7059 transitions. Second operand 11 states. [2020-01-16 19:02:19,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:19,271 INFO L93 Difference]: Finished difference Result 2948 states and 11715 transitions. [2020-01-16 19:02:19,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:19,272 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:19,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:19,279 INFO L225 Difference]: With dead ends: 2948 [2020-01-16 19:02:19,280 INFO L226 Difference]: Without dead ends: 2925 [2020-01-16 19:02:19,280 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:19,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2925 states. [2020-01-16 19:02:19,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2925 to 1571. [2020-01-16 19:02:19,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:02:19,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7046 transitions. [2020-01-16 19:02:19,350 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7046 transitions. Word has length 28 [2020-01-16 19:02:19,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:19,350 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7046 transitions. [2020-01-16 19:02:19,350 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:19,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7046 transitions. [2020-01-16 19:02:19,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:19,353 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:19,353 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:19,353 INFO L426 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:19,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:19,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1724377962, now seen corresponding path program 207 times [2020-01-16 19:02:19,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:19,353 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792215899] [2020-01-16 19:02:19,353 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:19,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:19,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:19,877 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792215899] [2020-01-16 19:02:19,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:19,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:19,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075005445] [2020-01-16 19:02:19,877 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:19,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:19,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:19,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:19,878 INFO L87 Difference]: Start difference. First operand 1571 states and 7046 transitions. Second operand 11 states. [2020-01-16 19:02:20,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:20,148 INFO L93 Difference]: Finished difference Result 2940 states and 11699 transitions. [2020-01-16 19:02:20,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:20,149 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:20,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:20,156 INFO L225 Difference]: With dead ends: 2940 [2020-01-16 19:02:20,156 INFO L226 Difference]: Without dead ends: 2925 [2020-01-16 19:02:20,157 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:20,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2925 states. [2020-01-16 19:02:20,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2925 to 1575. [2020-01-16 19:02:20,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:02:20,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7053 transitions. [2020-01-16 19:02:20,224 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7053 transitions. Word has length 28 [2020-01-16 19:02:20,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:20,224 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7053 transitions. [2020-01-16 19:02:20,224 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:20,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7053 transitions. [2020-01-16 19:02:20,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:20,227 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:20,227 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:20,227 INFO L426 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:20,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:20,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1897625654, now seen corresponding path program 208 times [2020-01-16 19:02:20,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:20,227 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62438322] [2020-01-16 19:02:20,227 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:20,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:20,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:20,775 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62438322] [2020-01-16 19:02:20,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:20,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:20,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213796190] [2020-01-16 19:02:20,775 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:20,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:20,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:20,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:20,776 INFO L87 Difference]: Start difference. First operand 1575 states and 7053 transitions. Second operand 11 states. [2020-01-16 19:02:20,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:20,991 INFO L93 Difference]: Finished difference Result 2939 states and 11693 transitions. [2020-01-16 19:02:20,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:20,991 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:20,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:20,999 INFO L225 Difference]: With dead ends: 2939 [2020-01-16 19:02:20,999 INFO L226 Difference]: Without dead ends: 2921 [2020-01-16 19:02:20,999 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:21,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2020-01-16 19:02:21,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 1571. [2020-01-16 19:02:21,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:02:21,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7042 transitions. [2020-01-16 19:02:21,067 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7042 transitions. Word has length 28 [2020-01-16 19:02:21,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:21,067 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7042 transitions. [2020-01-16 19:02:21,067 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:21,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7042 transitions. [2020-01-16 19:02:21,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:21,069 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:21,069 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:21,070 INFO L426 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:21,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:21,070 INFO L82 PathProgramCache]: Analyzing trace with hash 201373738, now seen corresponding path program 209 times [2020-01-16 19:02:21,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:21,070 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605242226] [2020-01-16 19:02:21,070 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:21,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:21,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:21,588 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605242226] [2020-01-16 19:02:21,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:21,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:21,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711030275] [2020-01-16 19:02:21,588 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:21,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:21,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:21,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:21,589 INFO L87 Difference]: Start difference. First operand 1571 states and 7042 transitions. Second operand 11 states. [2020-01-16 19:02:21,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:21,854 INFO L93 Difference]: Finished difference Result 2946 states and 11707 transitions. [2020-01-16 19:02:21,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:21,854 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:21,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:21,861 INFO L225 Difference]: With dead ends: 2946 [2020-01-16 19:02:21,862 INFO L226 Difference]: Without dead ends: 2928 [2020-01-16 19:02:21,862 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:21,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2020-01-16 19:02:21,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 1575. [2020-01-16 19:02:21,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:02:21,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7049 transitions. [2020-01-16 19:02:21,929 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7049 transitions. Word has length 28 [2020-01-16 19:02:21,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:21,929 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7049 transitions. [2020-01-16 19:02:21,929 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:21,929 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7049 transitions. [2020-01-16 19:02:21,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:21,931 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:21,931 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:21,931 INFO L426 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:21,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:21,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1859486064, now seen corresponding path program 210 times [2020-01-16 19:02:21,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:21,932 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635157679] [2020-01-16 19:02:21,932 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:21,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:22,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:22,457 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635157679] [2020-01-16 19:02:22,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:22,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:22,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561765260] [2020-01-16 19:02:22,457 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:22,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:22,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:22,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:22,458 INFO L87 Difference]: Start difference. First operand 1575 states and 7049 transitions. Second operand 11 states. [2020-01-16 19:02:22,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:22,727 INFO L93 Difference]: Finished difference Result 2942 states and 11695 transitions. [2020-01-16 19:02:22,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:22,727 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:22,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:22,734 INFO L225 Difference]: With dead ends: 2942 [2020-01-16 19:02:22,734 INFO L226 Difference]: Without dead ends: 2920 [2020-01-16 19:02:22,735 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:22,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2920 states. [2020-01-16 19:02:22,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2920 to 1567. [2020-01-16 19:02:22,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 19:02:22,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7031 transitions. [2020-01-16 19:02:22,801 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7031 transitions. Word has length 28 [2020-01-16 19:02:22,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:22,801 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7031 transitions. [2020-01-16 19:02:22,801 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:22,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7031 transitions. [2020-01-16 19:02:22,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:22,803 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:22,804 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:22,804 INFO L426 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:22,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:22,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1598033708, now seen corresponding path program 211 times [2020-01-16 19:02:22,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:22,804 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674895617] [2020-01-16 19:02:22,804 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:22,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:23,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:23,353 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674895617] [2020-01-16 19:02:23,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:23,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:23,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266377571] [2020-01-16 19:02:23,353 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:23,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:23,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:23,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:23,354 INFO L87 Difference]: Start difference. First operand 1567 states and 7031 transitions. Second operand 11 states. [2020-01-16 19:02:23,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:23,537 INFO L93 Difference]: Finished difference Result 2973 states and 11768 transitions. [2020-01-16 19:02:23,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:23,537 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:23,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:23,544 INFO L225 Difference]: With dead ends: 2973 [2020-01-16 19:02:23,544 INFO L226 Difference]: Without dead ends: 2953 [2020-01-16 19:02:23,545 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:23,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2953 states. [2020-01-16 19:02:23,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2953 to 1583. [2020-01-16 19:02:23,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 19:02:23,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7068 transitions. [2020-01-16 19:02:23,612 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7068 transitions. Word has length 28 [2020-01-16 19:02:23,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:23,613 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7068 transitions. [2020-01-16 19:02:23,613 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:23,613 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7068 transitions. [2020-01-16 19:02:23,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:23,615 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:23,615 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:23,615 INFO L426 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:23,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:23,615 INFO L82 PathProgramCache]: Analyzing trace with hash -853331210, now seen corresponding path program 212 times [2020-01-16 19:02:23,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:23,616 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163094102] [2020-01-16 19:02:23,616 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:23,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:24,142 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 19:02:24,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:24,150 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163094102] [2020-01-16 19:02:24,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:24,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:24,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459413133] [2020-01-16 19:02:24,150 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:24,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:24,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:24,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:24,151 INFO L87 Difference]: Start difference. First operand 1583 states and 7068 transitions. Second operand 11 states. [2020-01-16 19:02:24,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:24,413 INFO L93 Difference]: Finished difference Result 2971 states and 11756 transitions. [2020-01-16 19:02:24,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:24,414 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:24,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:24,421 INFO L225 Difference]: With dead ends: 2971 [2020-01-16 19:02:24,421 INFO L226 Difference]: Without dead ends: 2943 [2020-01-16 19:02:24,421 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:24,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2943 states. [2020-01-16 19:02:24,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2943 to 1573. [2020-01-16 19:02:24,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:02:24,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7045 transitions. [2020-01-16 19:02:24,488 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7045 transitions. Word has length 28 [2020-01-16 19:02:24,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:24,488 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7045 transitions. [2020-01-16 19:02:24,488 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:24,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7045 transitions. [2020-01-16 19:02:24,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:24,490 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:24,491 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:24,491 INFO L426 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:24,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:24,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1060178130, now seen corresponding path program 213 times [2020-01-16 19:02:24,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:24,491 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985758800] [2020-01-16 19:02:24,491 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:24,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:25,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:25,015 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985758800] [2020-01-16 19:02:25,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:25,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:25,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627699970] [2020-01-16 19:02:25,016 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:25,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:25,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:25,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:25,016 INFO L87 Difference]: Start difference. First operand 1573 states and 7045 transitions. Second operand 11 states. [2020-01-16 19:02:25,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:25,247 INFO L93 Difference]: Finished difference Result 2964 states and 11741 transitions. [2020-01-16 19:02:25,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:25,247 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:25,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:25,254 INFO L225 Difference]: With dead ends: 2964 [2020-01-16 19:02:25,254 INFO L226 Difference]: Without dead ends: 2944 [2020-01-16 19:02:25,254 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:25,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2944 states. [2020-01-16 19:02:25,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2944 to 1578. [2020-01-16 19:02:25,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 19:02:25,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7053 transitions. [2020-01-16 19:02:25,320 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7053 transitions. Word has length 28 [2020-01-16 19:02:25,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:25,320 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7053 transitions. [2020-01-16 19:02:25,320 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:25,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7053 transitions. [2020-01-16 19:02:25,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:25,323 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:25,323 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:25,323 INFO L426 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:25,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:25,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1918631862, now seen corresponding path program 214 times [2020-01-16 19:02:25,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:25,323 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576436194] [2020-01-16 19:02:25,323 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:25,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:25,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:25,868 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576436194] [2020-01-16 19:02:25,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:25,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:25,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689316179] [2020-01-16 19:02:25,869 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:25,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:25,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:25,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:25,869 INFO L87 Difference]: Start difference. First operand 1578 states and 7053 transitions. Second operand 11 states. [2020-01-16 19:02:26,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:26,067 INFO L93 Difference]: Finished difference Result 2958 states and 11725 transitions. [2020-01-16 19:02:26,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:26,067 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:26,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:26,075 INFO L225 Difference]: With dead ends: 2958 [2020-01-16 19:02:26,075 INFO L226 Difference]: Without dead ends: 2939 [2020-01-16 19:02:26,075 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:26,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2939 states. [2020-01-16 19:02:26,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2939 to 1573. [2020-01-16 19:02:26,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:02:26,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7040 transitions. [2020-01-16 19:02:26,144 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7040 transitions. Word has length 28 [2020-01-16 19:02:26,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:26,144 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7040 transitions. [2020-01-16 19:02:26,144 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:26,144 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7040 transitions. [2020-01-16 19:02:26,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:26,146 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:26,146 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:26,146 INFO L426 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:26,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:26,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1295465326, now seen corresponding path program 215 times [2020-01-16 19:02:26,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:26,147 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691976573] [2020-01-16 19:02:26,147 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:26,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:26,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:26,656 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691976573] [2020-01-16 19:02:26,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:26,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:26,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107891107] [2020-01-16 19:02:26,657 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:26,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:26,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:26,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:26,657 INFO L87 Difference]: Start difference. First operand 1573 states and 7040 transitions. Second operand 11 states. [2020-01-16 19:02:26,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:26,926 INFO L93 Difference]: Finished difference Result 2959 states and 11728 transitions. [2020-01-16 19:02:26,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:26,926 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:26,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:26,933 INFO L225 Difference]: With dead ends: 2959 [2020-01-16 19:02:26,933 INFO L226 Difference]: Without dead ends: 2941 [2020-01-16 19:02:26,933 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:26,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2941 states. [2020-01-16 19:02:26,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2941 to 1577. [2020-01-16 19:02:26,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 19:02:26,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7047 transitions. [2020-01-16 19:02:26,999 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7047 transitions. Word has length 28 [2020-01-16 19:02:27,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:27,000 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7047 transitions. [2020-01-16 19:02:27,000 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:27,000 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7047 transitions. [2020-01-16 19:02:27,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:27,002 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:27,002 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:27,002 INFO L426 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:27,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:27,002 INFO L82 PathProgramCache]: Analyzing trace with hash -765394476, now seen corresponding path program 216 times [2020-01-16 19:02:27,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:27,003 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110269246] [2020-01-16 19:02:27,003 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:27,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:27,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:27,519 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110269246] [2020-01-16 19:02:27,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:27,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:27,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487092749] [2020-01-16 19:02:27,519 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:27,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:27,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:27,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:27,520 INFO L87 Difference]: Start difference. First operand 1577 states and 7047 transitions. Second operand 11 states. [2020-01-16 19:02:27,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:27,797 INFO L93 Difference]: Finished difference Result 2955 states and 11716 transitions. [2020-01-16 19:02:27,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:27,798 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:27,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:27,806 INFO L225 Difference]: With dead ends: 2955 [2020-01-16 19:02:27,806 INFO L226 Difference]: Without dead ends: 2925 [2020-01-16 19:02:27,806 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:27,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2925 states. [2020-01-16 19:02:27,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2925 to 1561. [2020-01-16 19:02:27,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1561 states. [2020-01-16 19:02:27,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1561 states to 1561 states and 7014 transitions. [2020-01-16 19:02:27,875 INFO L78 Accepts]: Start accepts. Automaton has 1561 states and 7014 transitions. Word has length 28 [2020-01-16 19:02:27,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:27,875 INFO L478 AbstractCegarLoop]: Abstraction has 1561 states and 7014 transitions. [2020-01-16 19:02:27,875 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:27,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1561 states and 7014 transitions. [2020-01-16 19:02:27,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:27,877 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:27,877 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:27,877 INFO L426 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:27,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:27,878 INFO L82 PathProgramCache]: Analyzing trace with hash 68637930, now seen corresponding path program 217 times [2020-01-16 19:02:27,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:27,878 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370094857] [2020-01-16 19:02:27,878 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:27,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:28,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:28,412 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370094857] [2020-01-16 19:02:28,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:28,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:28,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901086902] [2020-01-16 19:02:28,413 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:28,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:28,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:28,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:28,413 INFO L87 Difference]: Start difference. First operand 1561 states and 7014 transitions. Second operand 11 states. [2020-01-16 19:02:28,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:28,603 INFO L93 Difference]: Finished difference Result 2976 states and 11795 transitions. [2020-01-16 19:02:28,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:28,603 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:28,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:28,610 INFO L225 Difference]: With dead ends: 2976 [2020-01-16 19:02:28,610 INFO L226 Difference]: Without dead ends: 2960 [2020-01-16 19:02:28,610 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:28,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2960 states. [2020-01-16 19:02:28,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2960 to 1582. [2020-01-16 19:02:28,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 19:02:28,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7081 transitions. [2020-01-16 19:02:28,677 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7081 transitions. Word has length 28 [2020-01-16 19:02:28,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:28,678 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7081 transitions. [2020-01-16 19:02:28,678 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:28,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7081 transitions. [2020-01-16 19:02:28,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:28,680 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:28,680 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:28,680 INFO L426 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:28,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:28,680 INFO L82 PathProgramCache]: Analyzing trace with hash 813340428, now seen corresponding path program 218 times [2020-01-16 19:02:28,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:28,681 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504886611] [2020-01-16 19:02:28,681 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:28,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:29,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:29,213 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504886611] [2020-01-16 19:02:29,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:29,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:29,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900642655] [2020-01-16 19:02:29,214 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:29,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:29,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:29,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:29,214 INFO L87 Difference]: Start difference. First operand 1582 states and 7081 transitions. Second operand 11 states. [2020-01-16 19:02:29,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:29,346 INFO L93 Difference]: Finished difference Result 2980 states and 11796 transitions. [2020-01-16 19:02:29,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:29,347 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:29,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:29,354 INFO L225 Difference]: With dead ends: 2980 [2020-01-16 19:02:29,355 INFO L226 Difference]: Without dead ends: 2953 [2020-01-16 19:02:29,355 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:29,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2953 states. [2020-01-16 19:02:29,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2953 to 1575. [2020-01-16 19:02:29,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:02:29,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7061 transitions. [2020-01-16 19:02:29,421 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7061 transitions. Word has length 28 [2020-01-16 19:02:29,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:29,421 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7061 transitions. [2020-01-16 19:02:29,422 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:29,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7061 transitions. [2020-01-16 19:02:29,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:29,424 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:29,424 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:29,424 INFO L426 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:29,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:29,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1679578888, now seen corresponding path program 219 times [2020-01-16 19:02:29,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:29,424 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972885904] [2020-01-16 19:02:29,424 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:29,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:29,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:29,947 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972885904] [2020-01-16 19:02:29,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:29,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:29,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070235960] [2020-01-16 19:02:29,947 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:29,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:29,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:29,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:29,948 INFO L87 Difference]: Start difference. First operand 1575 states and 7061 transitions. Second operand 11 states. [2020-01-16 19:02:30,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:30,142 INFO L93 Difference]: Finished difference Result 2973 states and 11783 transitions. [2020-01-16 19:02:30,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:30,143 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:30,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:30,150 INFO L225 Difference]: With dead ends: 2973 [2020-01-16 19:02:30,150 INFO L226 Difference]: Without dead ends: 2957 [2020-01-16 19:02:30,151 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:30,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2957 states. [2020-01-16 19:02:30,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2957 to 1581. [2020-01-16 19:02:30,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 19:02:30,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7072 transitions. [2020-01-16 19:02:30,217 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7072 transitions. Word has length 28 [2020-01-16 19:02:30,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:30,217 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7072 transitions. [2020-01-16 19:02:30,217 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:30,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7072 transitions. [2020-01-16 19:02:30,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:30,219 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:30,219 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:30,220 INFO L426 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:30,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:30,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1125983412, now seen corresponding path program 220 times [2020-01-16 19:02:30,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:30,220 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689551147] [2020-01-16 19:02:30,220 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:30,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:30,760 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 19:02:30,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:30,767 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689551147] [2020-01-16 19:02:30,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:30,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:30,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009219054] [2020-01-16 19:02:30,767 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:30,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:30,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:30,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:30,768 INFO L87 Difference]: Start difference. First operand 1581 states and 7072 transitions. Second operand 11 states. [2020-01-16 19:02:30,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:30,935 INFO L93 Difference]: Finished difference Result 2975 states and 11781 transitions. [2020-01-16 19:02:30,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:30,936 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:30,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:30,943 INFO L225 Difference]: With dead ends: 2975 [2020-01-16 19:02:30,944 INFO L226 Difference]: Without dead ends: 2951 [2020-01-16 19:02:30,944 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:30,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2020-01-16 19:02:31,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 1575. [2020-01-16 19:02:31,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:02:31,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7055 transitions. [2020-01-16 19:02:31,010 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7055 transitions. Word has length 28 [2020-01-16 19:02:31,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:31,010 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7055 transitions. [2020-01-16 19:02:31,010 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:31,010 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7055 transitions. [2020-01-16 19:02:31,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:31,013 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:31,013 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:31,013 INFO L426 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:31,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:31,013 INFO L82 PathProgramCache]: Analyzing trace with hash -259744952, now seen corresponding path program 221 times [2020-01-16 19:02:31,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:31,013 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130914264] [2020-01-16 19:02:31,013 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:31,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:31,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:31,548 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130914264] [2020-01-16 19:02:31,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:31,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:31,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002961965] [2020-01-16 19:02:31,548 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:31,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:31,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:31,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:31,549 INFO L87 Difference]: Start difference. First operand 1575 states and 7055 transitions. Second operand 11 states. [2020-01-16 19:02:31,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:31,678 INFO L93 Difference]: Finished difference Result 2985 states and 11800 transitions. [2020-01-16 19:02:31,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:31,678 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:31,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:31,685 INFO L225 Difference]: With dead ends: 2985 [2020-01-16 19:02:31,686 INFO L226 Difference]: Without dead ends: 2965 [2020-01-16 19:02:31,686 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:31,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2965 states. [2020-01-16 19:02:31,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2965 to 1585. [2020-01-16 19:02:31,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 19:02:31,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7072 transitions. [2020-01-16 19:02:31,753 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7072 transitions. Word has length 28 [2020-01-16 19:02:31,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:31,753 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7072 transitions. [2020-01-16 19:02:31,753 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:31,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7072 transitions. [2020-01-16 19:02:31,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:31,755 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:31,755 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:31,755 INFO L426 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:31,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:31,756 INFO L82 PathProgramCache]: Analyzing trace with hash 484957546, now seen corresponding path program 222 times [2020-01-16 19:02:31,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:31,756 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225940678] [2020-01-16 19:02:31,756 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:31,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:32,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:32,294 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225940678] [2020-01-16 19:02:32,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:32,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:32,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876876363] [2020-01-16 19:02:32,295 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:32,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:32,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:32,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:32,295 INFO L87 Difference]: Start difference. First operand 1585 states and 7072 transitions. Second operand 11 states. [2020-01-16 19:02:32,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:32,468 INFO L93 Difference]: Finished difference Result 2983 states and 11788 transitions. [2020-01-16 19:02:32,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:32,468 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:32,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:32,475 INFO L225 Difference]: With dead ends: 2983 [2020-01-16 19:02:32,475 INFO L226 Difference]: Without dead ends: 2947 [2020-01-16 19:02:32,475 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:32,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2947 states. [2020-01-16 19:02:32,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2947 to 1567. [2020-01-16 19:02:32,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 19:02:32,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7034 transitions. [2020-01-16 19:02:32,541 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7034 transitions. Word has length 28 [2020-01-16 19:02:32,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:32,541 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7034 transitions. [2020-01-16 19:02:32,541 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:32,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7034 transitions. [2020-01-16 19:02:32,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:32,544 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:32,544 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:32,544 INFO L426 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:32,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:32,544 INFO L82 PathProgramCache]: Analyzing trace with hash -437708336, now seen corresponding path program 223 times [2020-01-16 19:02:32,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:32,544 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220180316] [2020-01-16 19:02:32,544 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:32,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:33,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:33,067 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220180316] [2020-01-16 19:02:33,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:33,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:33,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106058256] [2020-01-16 19:02:33,067 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:33,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:33,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:33,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:33,068 INFO L87 Difference]: Start difference. First operand 1567 states and 7034 transitions. Second operand 11 states. [2020-01-16 19:02:33,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:33,259 INFO L93 Difference]: Finished difference Result 2962 states and 11752 transitions. [2020-01-16 19:02:33,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:33,259 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:33,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:33,266 INFO L225 Difference]: With dead ends: 2962 [2020-01-16 19:02:33,266 INFO L226 Difference]: Without dead ends: 2946 [2020-01-16 19:02:33,266 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:33,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2946 states. [2020-01-16 19:02:33,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2946 to 1579. [2020-01-16 19:02:33,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 19:02:33,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7065 transitions. [2020-01-16 19:02:33,333 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7065 transitions. Word has length 28 [2020-01-16 19:02:33,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:33,333 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7065 transitions. [2020-01-16 19:02:33,333 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:33,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7065 transitions. [2020-01-16 19:02:33,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:33,335 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:33,335 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:33,335 INFO L426 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:33,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:33,335 INFO L82 PathProgramCache]: Analyzing trace with hash 306994162, now seen corresponding path program 224 times [2020-01-16 19:02:33,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:33,336 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705464530] [2020-01-16 19:02:33,336 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:33,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:33,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:33,872 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705464530] [2020-01-16 19:02:33,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:33,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:33,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079703788] [2020-01-16 19:02:33,872 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:33,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:33,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:33,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:33,873 INFO L87 Difference]: Start difference. First operand 1579 states and 7065 transitions. Second operand 11 states. [2020-01-16 19:02:34,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:34,010 INFO L93 Difference]: Finished difference Result 2966 states and 11753 transitions. [2020-01-16 19:02:34,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:34,011 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:34,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:34,017 INFO L225 Difference]: With dead ends: 2966 [2020-01-16 19:02:34,017 INFO L226 Difference]: Without dead ends: 2939 [2020-01-16 19:02:34,018 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:34,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2939 states. [2020-01-16 19:02:34,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2939 to 1572. [2020-01-16 19:02:34,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 19:02:34,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7047 transitions. [2020-01-16 19:02:34,083 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7047 transitions. Word has length 28 [2020-01-16 19:02:34,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:34,083 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7047 transitions. [2020-01-16 19:02:34,083 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:34,083 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7047 transitions. [2020-01-16 19:02:34,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:34,086 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:34,086 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:34,086 INFO L426 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:34,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:34,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1711088200, now seen corresponding path program 225 times [2020-01-16 19:02:34,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:34,086 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588406459] [2020-01-16 19:02:34,086 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:34,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:34,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:34,610 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588406459] [2020-01-16 19:02:34,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:34,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:34,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13973251] [2020-01-16 19:02:34,611 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:34,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:34,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:34,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:34,611 INFO L87 Difference]: Start difference. First operand 1572 states and 7047 transitions. Second operand 11 states. [2020-01-16 19:02:34,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:34,810 INFO L93 Difference]: Finished difference Result 2953 states and 11728 transitions. [2020-01-16 19:02:34,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:34,810 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:34,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:34,817 INFO L225 Difference]: With dead ends: 2953 [2020-01-16 19:02:34,817 INFO L226 Difference]: Without dead ends: 2937 [2020-01-16 19:02:34,817 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:34,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2020-01-16 19:02:34,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 1576. [2020-01-16 19:02:34,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 19:02:34,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7054 transitions. [2020-01-16 19:02:34,883 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7054 transitions. Word has length 28 [2020-01-16 19:02:34,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:34,884 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7054 transitions. [2020-01-16 19:02:34,884 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:34,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7054 transitions. [2020-01-16 19:02:34,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:34,886 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:34,886 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:34,886 INFO L426 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:34,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:34,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1139633394, now seen corresponding path program 226 times [2020-01-16 19:02:34,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:34,887 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336623822] [2020-01-16 19:02:34,887 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:34,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:35,319 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 19:02:35,515 WARN L192 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 19:02:35,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:35,527 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336623822] [2020-01-16 19:02:35,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:35,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:35,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341242504] [2020-01-16 19:02:35,528 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:35,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:35,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:35,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:35,529 INFO L87 Difference]: Start difference. First operand 1576 states and 7054 transitions. Second operand 11 states. [2020-01-16 19:02:35,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:35,698 INFO L93 Difference]: Finished difference Result 2951 states and 11720 transitions. [2020-01-16 19:02:35,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:35,698 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:35,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:35,704 INFO L225 Difference]: With dead ends: 2951 [2020-01-16 19:02:35,704 INFO L226 Difference]: Without dead ends: 2933 [2020-01-16 19:02:35,705 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:35,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2933 states. [2020-01-16 19:02:35,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2933 to 1572. [2020-01-16 19:02:35,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 19:02:35,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7043 transitions. [2020-01-16 19:02:35,771 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7043 transitions. Word has length 28 [2020-01-16 19:02:35,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:35,771 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7043 transitions. [2020-01-16 19:02:35,771 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:35,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7043 transitions. [2020-01-16 19:02:35,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:35,773 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:35,773 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:35,773 INFO L426 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:35,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:35,774 INFO L82 PathProgramCache]: Analyzing trace with hash -228235640, now seen corresponding path program 227 times [2020-01-16 19:02:35,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:35,774 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436178447] [2020-01-16 19:02:35,774 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:35,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:36,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:36,298 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436178447] [2020-01-16 19:02:36,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:36,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:36,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625572726] [2020-01-16 19:02:36,299 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:36,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:36,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:36,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:36,299 INFO L87 Difference]: Start difference. First operand 1572 states and 7043 transitions. Second operand 11 states. [2020-01-16 19:02:36,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:36,465 INFO L93 Difference]: Finished difference Result 2962 states and 11740 transitions. [2020-01-16 19:02:36,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:36,465 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:36,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:36,473 INFO L225 Difference]: With dead ends: 2962 [2020-01-16 19:02:36,473 INFO L226 Difference]: Without dead ends: 2942 [2020-01-16 19:02:36,473 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:36,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2020-01-16 19:02:36,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 1577. [2020-01-16 19:02:36,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 19:02:36,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7051 transitions. [2020-01-16 19:02:36,539 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7051 transitions. Word has length 28 [2020-01-16 19:02:36,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:36,539 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7051 transitions. [2020-01-16 19:02:36,539 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:36,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7051 transitions. [2020-01-16 19:02:36,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:36,542 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:36,542 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:36,542 INFO L426 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:36,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:36,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1544392944, now seen corresponding path program 228 times [2020-01-16 19:02:36,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:36,542 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360339348] [2020-01-16 19:02:36,542 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:36,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:37,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:37,053 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360339348] [2020-01-16 19:02:37,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:37,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:37,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516693054] [2020-01-16 19:02:37,054 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:37,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:37,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:37,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:37,055 INFO L87 Difference]: Start difference. First operand 1577 states and 7051 transitions. Second operand 11 states. [2020-01-16 19:02:37,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:37,240 INFO L93 Difference]: Finished difference Result 2956 states and 11724 transitions. [2020-01-16 19:02:37,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:37,241 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:37,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:37,248 INFO L225 Difference]: With dead ends: 2956 [2020-01-16 19:02:37,248 INFO L226 Difference]: Without dead ends: 2932 [2020-01-16 19:02:37,248 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:37,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2932 states. [2020-01-16 19:02:37,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2932 to 1567. [2020-01-16 19:02:37,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 19:02:37,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7029 transitions. [2020-01-16 19:02:37,314 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7029 transitions. Word has length 28 [2020-01-16 19:02:37,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:37,314 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7029 transitions. [2020-01-16 19:02:37,314 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:37,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7029 transitions. [2020-01-16 19:02:37,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:37,317 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:37,317 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:37,317 INFO L426 AbstractCegarLoop]: === Iteration 237 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:37,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:37,317 INFO L82 PathProgramCache]: Analyzing trace with hash -427205232, now seen corresponding path program 229 times [2020-01-16 19:02:37,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:37,317 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850148531] [2020-01-16 19:02:37,317 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:37,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:37,829 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 19:02:37,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:37,835 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850148531] [2020-01-16 19:02:37,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:37,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:37,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329245925] [2020-01-16 19:02:37,836 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:37,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:37,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:37,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:37,836 INFO L87 Difference]: Start difference. First operand 1567 states and 7029 transitions. Second operand 11 states. [2020-01-16 19:02:38,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:38,016 INFO L93 Difference]: Finished difference Result 2954 states and 11732 transitions. [2020-01-16 19:02:38,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:38,017 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:38,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:38,024 INFO L225 Difference]: With dead ends: 2954 [2020-01-16 19:02:38,024 INFO L226 Difference]: Without dead ends: 2938 [2020-01-16 19:02:38,025 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:38,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2020-01-16 19:02:38,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 1577. [2020-01-16 19:02:38,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 19:02:38,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7055 transitions. [2020-01-16 19:02:38,090 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7055 transitions. Word has length 28 [2020-01-16 19:02:38,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:38,091 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7055 transitions. [2020-01-16 19:02:38,091 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:38,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7055 transitions. [2020-01-16 19:02:38,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:38,093 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:38,093 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:38,093 INFO L426 AbstractCegarLoop]: === Iteration 238 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:38,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:38,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1062199764, now seen corresponding path program 230 times [2020-01-16 19:02:38,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:38,094 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106117034] [2020-01-16 19:02:38,094 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:38,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:38,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:38,617 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106117034] [2020-01-16 19:02:38,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:38,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:38,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098666942] [2020-01-16 19:02:38,617 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:38,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:38,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:38,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:38,618 INFO L87 Difference]: Start difference. First operand 1577 states and 7055 transitions. Second operand 11 states. [2020-01-16 19:02:38,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:38,812 INFO L93 Difference]: Finished difference Result 2956 states and 11730 transitions. [2020-01-16 19:02:38,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:38,812 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:38,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:38,820 INFO L225 Difference]: With dead ends: 2956 [2020-01-16 19:02:38,820 INFO L226 Difference]: Without dead ends: 2932 [2020-01-16 19:02:38,821 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:38,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2932 states. [2020-01-16 19:02:38,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2932 to 1571. [2020-01-16 19:02:38,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:02:38,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7040 transitions. [2020-01-16 19:02:38,887 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7040 transitions. Word has length 28 [2020-01-16 19:02:38,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:38,887 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7040 transitions. [2020-01-16 19:02:38,887 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:38,887 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7040 transitions. [2020-01-16 19:02:38,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:38,889 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:38,889 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:38,889 INFO L426 AbstractCegarLoop]: === Iteration 239 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:38,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:38,889 INFO L82 PathProgramCache]: Analyzing trace with hash 110650346, now seen corresponding path program 231 times [2020-01-16 19:02:38,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:38,890 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253781537] [2020-01-16 19:02:38,890 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:38,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:39,399 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 19:02:39,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:39,405 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253781537] [2020-01-16 19:02:39,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:39,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:39,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118344705] [2020-01-16 19:02:39,406 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:39,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:39,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:39,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:39,406 INFO L87 Difference]: Start difference. First operand 1571 states and 7040 transitions. Second operand 11 states. [2020-01-16 19:02:39,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:39,610 INFO L93 Difference]: Finished difference Result 2948 states and 11714 transitions. [2020-01-16 19:02:39,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:39,611 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:39,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:39,617 INFO L225 Difference]: With dead ends: 2948 [2020-01-16 19:02:39,618 INFO L226 Difference]: Without dead ends: 2932 [2020-01-16 19:02:39,618 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:39,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2932 states. [2020-01-16 19:02:39,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2932 to 1575. [2020-01-16 19:02:39,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:02:39,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7047 transitions. [2020-01-16 19:02:39,687 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7047 transitions. Word has length 28 [2020-01-16 19:02:39,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:39,688 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7047 transitions. [2020-01-16 19:02:39,688 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:39,688 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7047 transitions. [2020-01-16 19:02:39,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:39,690 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:39,690 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:39,691 INFO L426 AbstractCegarLoop]: === Iteration 240 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:39,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:39,691 INFO L82 PathProgramCache]: Analyzing trace with hash -460804460, now seen corresponding path program 232 times [2020-01-16 19:02:39,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:39,691 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121699803] [2020-01-16 19:02:39,691 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:39,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:40,212 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 19:02:40,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:40,219 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121699803] [2020-01-16 19:02:40,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:40,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:40,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688946337] [2020-01-16 19:02:40,219 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:40,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:40,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:40,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:40,220 INFO L87 Difference]: Start difference. First operand 1575 states and 7047 transitions. Second operand 11 states. [2020-01-16 19:02:40,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:40,458 INFO L93 Difference]: Finished difference Result 2946 states and 11706 transitions. [2020-01-16 19:02:40,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:40,459 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:40,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:40,467 INFO L225 Difference]: With dead ends: 2946 [2020-01-16 19:02:40,467 INFO L226 Difference]: Without dead ends: 2928 [2020-01-16 19:02:40,467 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:40,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2020-01-16 19:02:40,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 1571. [2020-01-16 19:02:40,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:02:40,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7036 transitions. [2020-01-16 19:02:40,532 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7036 transitions. Word has length 28 [2020-01-16 19:02:40,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:40,533 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7036 transitions. [2020-01-16 19:02:40,533 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:40,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7036 transitions. [2020-01-16 19:02:40,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:40,535 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:40,535 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:40,535 INFO L426 AbstractCegarLoop]: === Iteration 241 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:40,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:40,536 INFO L82 PathProgramCache]: Analyzing trace with hash 526969962, now seen corresponding path program 233 times [2020-01-16 19:02:40,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:40,536 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081140455] [2020-01-16 19:02:40,536 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:40,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:41,044 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 19:02:41,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:41,052 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081140455] [2020-01-16 19:02:41,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:41,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:41,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216164521] [2020-01-16 19:02:41,052 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:41,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:41,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:41,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:41,053 INFO L87 Difference]: Start difference. First operand 1571 states and 7036 transitions. Second operand 11 states. [2020-01-16 19:02:41,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:41,232 INFO L93 Difference]: Finished difference Result 2952 states and 11718 transitions. [2020-01-16 19:02:41,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:41,232 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:41,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:41,239 INFO L225 Difference]: With dead ends: 2952 [2020-01-16 19:02:41,239 INFO L226 Difference]: Without dead ends: 2934 [2020-01-16 19:02:41,239 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:41,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2934 states. [2020-01-16 19:02:41,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2934 to 1575. [2020-01-16 19:02:41,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:02:41,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7043 transitions. [2020-01-16 19:02:41,306 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7043 transitions. Word has length 28 [2020-01-16 19:02:41,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:41,306 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7043 transitions. [2020-01-16 19:02:41,306 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:41,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7043 transitions. [2020-01-16 19:02:41,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:41,308 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:41,309 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:41,309 INFO L426 AbstractCegarLoop]: === Iteration 242 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:41,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:41,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1533889840, now seen corresponding path program 234 times [2020-01-16 19:02:41,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:41,309 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150443370] [2020-01-16 19:02:41,309 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:41,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:41,823 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 19:02:41,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:41,830 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150443370] [2020-01-16 19:02:41,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:41,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:41,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778135255] [2020-01-16 19:02:41,831 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:41,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:41,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:41,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:41,831 INFO L87 Difference]: Start difference. First operand 1575 states and 7043 transitions. Second operand 11 states. [2020-01-16 19:02:42,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:42,015 INFO L93 Difference]: Finished difference Result 2948 states and 11706 transitions. [2020-01-16 19:02:42,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:42,015 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:42,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:42,022 INFO L225 Difference]: With dead ends: 2948 [2020-01-16 19:02:42,022 INFO L226 Difference]: Without dead ends: 2926 [2020-01-16 19:02:42,022 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:42,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2020-01-16 19:02:42,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 1567. [2020-01-16 19:02:42,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 19:02:42,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7025 transitions. [2020-01-16 19:02:42,088 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7025 transitions. Word has length 28 [2020-01-16 19:02:42,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:42,088 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7025 transitions. [2020-01-16 19:02:42,088 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:42,088 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7025 transitions. [2020-01-16 19:02:42,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:42,090 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:42,090 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:42,091 INFO L426 AbstractCegarLoop]: === Iteration 243 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:42,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:42,091 INFO L82 PathProgramCache]: Analyzing trace with hash 328000370, now seen corresponding path program 235 times [2020-01-16 19:02:42,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:42,091 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257717097] [2020-01-16 19:02:42,091 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:42,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:42,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:42,645 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257717097] [2020-01-16 19:02:42,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:42,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:42,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418215411] [2020-01-16 19:02:42,646 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:42,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:42,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:42,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:42,646 INFO L87 Difference]: Start difference. First operand 1567 states and 7025 transitions. Second operand 11 states. [2020-01-16 19:02:42,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:42,785 INFO L93 Difference]: Finished difference Result 2977 states and 11774 transitions. [2020-01-16 19:02:42,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:42,786 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:42,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:42,793 INFO L225 Difference]: With dead ends: 2977 [2020-01-16 19:02:42,793 INFO L226 Difference]: Without dead ends: 2957 [2020-01-16 19:02:42,793 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:42,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2957 states. [2020-01-16 19:02:42,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2957 to 1583. [2020-01-16 19:02:42,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 19:02:42,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7062 transitions. [2020-01-16 19:02:42,862 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7062 transitions. Word has length 28 [2020-01-16 19:02:42,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:42,862 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7062 transitions. [2020-01-16 19:02:42,862 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:42,862 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7062 transitions. [2020-01-16 19:02:42,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:42,865 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:42,865 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:42,865 INFO L426 AbstractCegarLoop]: === Iteration 244 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:42,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:42,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1072702868, now seen corresponding path program 236 times [2020-01-16 19:02:42,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:42,865 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763748110] [2020-01-16 19:02:42,865 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:42,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:43,406 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 19:02:43,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:43,413 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763748110] [2020-01-16 19:02:43,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:43,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:43,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378638173] [2020-01-16 19:02:43,413 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:43,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:43,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:43,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:43,414 INFO L87 Difference]: Start difference. First operand 1583 states and 7062 transitions. Second operand 11 states. [2020-01-16 19:02:43,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:43,597 INFO L93 Difference]: Finished difference Result 2975 states and 11762 transitions. [2020-01-16 19:02:43,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:43,598 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:43,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:43,606 INFO L225 Difference]: With dead ends: 2975 [2020-01-16 19:02:43,606 INFO L226 Difference]: Without dead ends: 2947 [2020-01-16 19:02:43,606 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:43,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2947 states. [2020-01-16 19:02:43,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2947 to 1573. [2020-01-16 19:02:43,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:02:43,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7039 transitions. [2020-01-16 19:02:43,673 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7039 transitions. Word has length 28 [2020-01-16 19:02:43,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:43,673 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7039 transitions. [2020-01-16 19:02:43,673 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:43,673 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7039 transitions. [2020-01-16 19:02:43,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:43,675 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:43,675 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:43,675 INFO L426 AbstractCegarLoop]: === Iteration 245 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:43,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:43,676 INFO L82 PathProgramCache]: Analyzing trace with hash 865855948, now seen corresponding path program 237 times [2020-01-16 19:02:43,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:43,676 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262995143] [2020-01-16 19:02:43,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:43,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:44,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:44,219 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262995143] [2020-01-16 19:02:44,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:44,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:44,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039980444] [2020-01-16 19:02:44,219 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:44,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:44,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:44,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:44,220 INFO L87 Difference]: Start difference. First operand 1573 states and 7039 transitions. Second operand 11 states. [2020-01-16 19:02:44,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:44,366 INFO L93 Difference]: Finished difference Result 2968 states and 11747 transitions. [2020-01-16 19:02:44,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:44,366 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:44,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:44,372 INFO L225 Difference]: With dead ends: 2968 [2020-01-16 19:02:44,372 INFO L226 Difference]: Without dead ends: 2948 [2020-01-16 19:02:44,373 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:44,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2948 states. [2020-01-16 19:02:44,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2948 to 1578. [2020-01-16 19:02:44,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 19:02:44,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7047 transitions. [2020-01-16 19:02:44,439 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7047 transitions. Word has length 28 [2020-01-16 19:02:44,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:44,439 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7047 transitions. [2020-01-16 19:02:44,439 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:44,439 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7047 transitions. [2020-01-16 19:02:44,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:44,441 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:44,441 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:44,441 INFO L426 AbstractCegarLoop]: === Iteration 246 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:44,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:44,441 INFO L82 PathProgramCache]: Analyzing trace with hash -450301356, now seen corresponding path program 238 times [2020-01-16 19:02:44,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:44,442 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880822190] [2020-01-16 19:02:44,442 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:44,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:44,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:44,971 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880822190] [2020-01-16 19:02:44,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:44,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:44,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872729003] [2020-01-16 19:02:44,972 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:44,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:44,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:44,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:44,972 INFO L87 Difference]: Start difference. First operand 1578 states and 7047 transitions. Second operand 11 states. [2020-01-16 19:02:45,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:45,175 INFO L93 Difference]: Finished difference Result 2962 states and 11731 transitions. [2020-01-16 19:02:45,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:45,175 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:45,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:45,183 INFO L225 Difference]: With dead ends: 2962 [2020-01-16 19:02:45,183 INFO L226 Difference]: Without dead ends: 2943 [2020-01-16 19:02:45,183 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:45,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2943 states. [2020-01-16 19:02:45,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2943 to 1573. [2020-01-16 19:02:45,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:02:45,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7034 transitions. [2020-01-16 19:02:45,249 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7034 transitions. Word has length 28 [2020-01-16 19:02:45,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:45,249 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7034 transitions. [2020-01-16 19:02:45,249 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:45,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7034 transitions. [2020-01-16 19:02:45,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:45,252 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:45,252 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:45,252 INFO L426 AbstractCegarLoop]: === Iteration 247 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:45,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:45,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1073467892, now seen corresponding path program 239 times [2020-01-16 19:02:45,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:45,252 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049455801] [2020-01-16 19:02:45,252 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:45,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:45,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:45,807 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049455801] [2020-01-16 19:02:45,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:45,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:45,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655132887] [2020-01-16 19:02:45,808 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:45,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:45,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:45,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:45,808 INFO L87 Difference]: Start difference. First operand 1573 states and 7034 transitions. Second operand 11 states. [2020-01-16 19:02:45,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:45,992 INFO L93 Difference]: Finished difference Result 2963 states and 11734 transitions. [2020-01-16 19:02:45,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:45,992 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:45,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:46,000 INFO L225 Difference]: With dead ends: 2963 [2020-01-16 19:02:46,000 INFO L226 Difference]: Without dead ends: 2945 [2020-01-16 19:02:46,000 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:46,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2945 states. [2020-01-16 19:02:46,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2945 to 1577. [2020-01-16 19:02:46,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 19:02:46,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7041 transitions. [2020-01-16 19:02:46,067 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7041 transitions. Word has length 28 [2020-01-16 19:02:46,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:46,067 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7041 transitions. [2020-01-16 19:02:46,067 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:46,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7041 transitions. [2020-01-16 19:02:46,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:46,069 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:46,069 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:46,070 INFO L426 AbstractCegarLoop]: === Iteration 248 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:46,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:46,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1160639602, now seen corresponding path program 240 times [2020-01-16 19:02:46,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:46,070 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512682152] [2020-01-16 19:02:46,070 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:46,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:46,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:46,601 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512682152] [2020-01-16 19:02:46,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:46,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:46,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932629749] [2020-01-16 19:02:46,602 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:46,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:46,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:46,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:46,602 INFO L87 Difference]: Start difference. First operand 1577 states and 7041 transitions. Second operand 11 states. [2020-01-16 19:02:46,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:46,787 INFO L93 Difference]: Finished difference Result 2959 states and 11722 transitions. [2020-01-16 19:02:46,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:46,788 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:46,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:46,795 INFO L225 Difference]: With dead ends: 2959 [2020-01-16 19:02:46,796 INFO L226 Difference]: Without dead ends: 2923 [2020-01-16 19:02:46,796 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:46,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2923 states. [2020-01-16 19:02:46,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2923 to 1555. [2020-01-16 19:02:46,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1555 states. [2020-01-16 19:02:46,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 6997 transitions. [2020-01-16 19:02:46,862 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 6997 transitions. Word has length 28 [2020-01-16 19:02:46,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:46,863 INFO L478 AbstractCegarLoop]: Abstraction has 1555 states and 6997 transitions. [2020-01-16 19:02:46,863 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:46,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 6997 transitions. [2020-01-16 19:02:46,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:46,865 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:46,865 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:46,865 INFO L426 AbstractCegarLoop]: === Iteration 249 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:46,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:46,865 INFO L82 PathProgramCache]: Analyzing trace with hash 424017834, now seen corresponding path program 241 times [2020-01-16 19:02:46,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:46,866 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401459096] [2020-01-16 19:02:46,866 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:46,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:47,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:47,393 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401459096] [2020-01-16 19:02:47,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:47,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:47,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758550752] [2020-01-16 19:02:47,393 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:47,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:47,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:47,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:47,394 INFO L87 Difference]: Start difference. First operand 1555 states and 6997 transitions. Second operand 11 states. [2020-01-16 19:02:47,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:47,593 INFO L93 Difference]: Finished difference Result 2936 states and 11714 transitions. [2020-01-16 19:02:47,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:47,594 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:47,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:47,601 INFO L225 Difference]: With dead ends: 2936 [2020-01-16 19:02:47,601 INFO L226 Difference]: Without dead ends: 2921 [2020-01-16 19:02:47,601 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:47,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2020-01-16 19:02:47,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 1576. [2020-01-16 19:02:47,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 19:02:47,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7079 transitions. [2020-01-16 19:02:47,668 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7079 transitions. Word has length 28 [2020-01-16 19:02:47,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:47,668 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7079 transitions. [2020-01-16 19:02:47,668 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:47,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7079 transitions. [2020-01-16 19:02:47,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:47,670 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:47,670 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:47,670 INFO L426 AbstractCegarLoop]: === Iteration 250 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:47,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:47,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1168720332, now seen corresponding path program 242 times [2020-01-16 19:02:47,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:47,671 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385692173] [2020-01-16 19:02:47,671 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:47,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:48,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:48,196 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385692173] [2020-01-16 19:02:48,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:48,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:48,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272611960] [2020-01-16 19:02:48,196 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:48,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:48,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:48,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:48,197 INFO L87 Difference]: Start difference. First operand 1576 states and 7079 transitions. Second operand 11 states. [2020-01-16 19:02:48,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:48,380 INFO L93 Difference]: Finished difference Result 2937 states and 11711 transitions. [2020-01-16 19:02:48,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:48,380 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:48,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:48,388 INFO L225 Difference]: With dead ends: 2937 [2020-01-16 19:02:48,388 INFO L226 Difference]: Without dead ends: 2916 [2020-01-16 19:02:48,388 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:48,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2020-01-16 19:02:48,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 1571. [2020-01-16 19:02:48,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:02:48,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7065 transitions. [2020-01-16 19:02:48,456 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7065 transitions. Word has length 28 [2020-01-16 19:02:48,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:48,457 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7065 transitions. [2020-01-16 19:02:48,457 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:48,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7065 transitions. [2020-01-16 19:02:48,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:48,459 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:48,459 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:48,459 INFO L426 AbstractCegarLoop]: === Iteration 251 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:48,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:48,460 INFO L82 PathProgramCache]: Analyzing trace with hash 2034958792, now seen corresponding path program 243 times [2020-01-16 19:02:48,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:48,460 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718514576] [2020-01-16 19:02:48,460 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:48,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:48,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:48,984 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718514576] [2020-01-16 19:02:48,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:48,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:48,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998631288] [2020-01-16 19:02:48,985 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:48,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:48,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:48,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:48,985 INFO L87 Difference]: Start difference. First operand 1571 states and 7065 transitions. Second operand 11 states. [2020-01-16 19:02:49,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:49,208 INFO L93 Difference]: Finished difference Result 2941 states and 11718 transitions. [2020-01-16 19:02:49,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:49,209 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:49,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:49,215 INFO L225 Difference]: With dead ends: 2941 [2020-01-16 19:02:49,215 INFO L226 Difference]: Without dead ends: 2926 [2020-01-16 19:02:49,216 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:49,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2020-01-16 19:02:49,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 1577. [2020-01-16 19:02:49,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 19:02:49,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7076 transitions. [2020-01-16 19:02:49,283 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7076 transitions. Word has length 28 [2020-01-16 19:02:49,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:49,284 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7076 transitions. [2020-01-16 19:02:49,284 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:49,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7076 transitions. [2020-01-16 19:02:49,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:49,286 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:49,286 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:49,286 INFO L426 AbstractCegarLoop]: === Iteration 252 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:49,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:49,286 INFO L82 PathProgramCache]: Analyzing trace with hash -770603508, now seen corresponding path program 244 times [2020-01-16 19:02:49,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:49,287 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058093954] [2020-01-16 19:02:49,287 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:49,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:49,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:49,814 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058093954] [2020-01-16 19:02:49,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:49,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:49,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680012100] [2020-01-16 19:02:49,815 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:49,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:49,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:49,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:49,815 INFO L87 Difference]: Start difference. First operand 1577 states and 7076 transitions. Second operand 11 states. [2020-01-16 19:02:49,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:49,961 INFO L93 Difference]: Finished difference Result 2946 states and 11722 transitions. [2020-01-16 19:02:49,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:49,961 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:49,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:49,968 INFO L225 Difference]: With dead ends: 2946 [2020-01-16 19:02:49,968 INFO L226 Difference]: Without dead ends: 2920 [2020-01-16 19:02:49,968 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:50,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2920 states. [2020-01-16 19:02:50,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2920 to 1571. [2020-01-16 19:02:50,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:02:50,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7059 transitions. [2020-01-16 19:02:50,035 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7059 transitions. Word has length 28 [2020-01-16 19:02:50,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:50,035 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7059 transitions. [2020-01-16 19:02:50,035 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:50,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7059 transitions. [2020-01-16 19:02:50,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:50,037 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:50,037 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:50,038 INFO L426 AbstractCegarLoop]: === Iteration 253 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:50,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:50,038 INFO L82 PathProgramCache]: Analyzing trace with hash 95634952, now seen corresponding path program 245 times [2020-01-16 19:02:50,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:50,038 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471239628] [2020-01-16 19:02:50,038 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:50,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:50,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:50,587 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471239628] [2020-01-16 19:02:50,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:50,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:50,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396276914] [2020-01-16 19:02:50,587 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:50,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:50,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:50,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:50,588 INFO L87 Difference]: Start difference. First operand 1571 states and 7059 transitions. Second operand 11 states. [2020-01-16 19:02:50,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:50,792 INFO L93 Difference]: Finished difference Result 2944 states and 11719 transitions. [2020-01-16 19:02:50,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:50,792 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:50,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:50,800 INFO L225 Difference]: With dead ends: 2944 [2020-01-16 19:02:50,800 INFO L226 Difference]: Without dead ends: 2928 [2020-01-16 19:02:50,800 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:50,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2020-01-16 19:02:50,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 1578. [2020-01-16 19:02:50,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 19:02:50,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7072 transitions. [2020-01-16 19:02:50,866 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7072 transitions. Word has length 28 [2020-01-16 19:02:50,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:50,867 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7072 transitions. [2020-01-16 19:02:50,867 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:50,867 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7072 transitions. [2020-01-16 19:02:50,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:50,869 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:50,869 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:50,869 INFO L426 AbstractCegarLoop]: === Iteration 254 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:50,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:50,869 INFO L82 PathProgramCache]: Analyzing trace with hash 840337450, now seen corresponding path program 246 times [2020-01-16 19:02:50,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:50,870 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956161431] [2020-01-16 19:02:50,870 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:50,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:51,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:51,398 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956161431] [2020-01-16 19:02:51,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:51,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:51,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109756273] [2020-01-16 19:02:51,398 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:51,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:51,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:51,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:51,399 INFO L87 Difference]: Start difference. First operand 1578 states and 7072 transitions. Second operand 11 states. [2020-01-16 19:02:51,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:51,558 INFO L93 Difference]: Finished difference Result 2948 states and 11720 transitions. [2020-01-16 19:02:51,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:51,559 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:51,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:51,566 INFO L225 Difference]: With dead ends: 2948 [2020-01-16 19:02:51,566 INFO L226 Difference]: Without dead ends: 2915 [2020-01-16 19:02:51,567 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:51,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2915 states. [2020-01-16 19:02:51,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2915 to 1565. [2020-01-16 19:02:51,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 19:02:51,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7043 transitions. [2020-01-16 19:02:51,633 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7043 transitions. Word has length 28 [2020-01-16 19:02:51,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:51,633 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7043 transitions. [2020-01-16 19:02:51,633 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:51,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7043 transitions. [2020-01-16 19:02:51,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:51,635 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:51,635 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:51,635 INFO L426 AbstractCegarLoop]: === Iteration 255 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:51,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:51,636 INFO L82 PathProgramCache]: Analyzing trace with hash 216894948, now seen corresponding path program 247 times [2020-01-16 19:02:51,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:51,636 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191238550] [2020-01-16 19:02:51,636 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:51,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:52,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:52,160 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191238550] [2020-01-16 19:02:52,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:52,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:52,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884803869] [2020-01-16 19:02:52,160 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:52,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:52,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:52,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:52,161 INFO L87 Difference]: Start difference. First operand 1565 states and 7043 transitions. Second operand 11 states. [2020-01-16 19:02:52,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:52,343 INFO L93 Difference]: Finished difference Result 2923 states and 11678 transitions. [2020-01-16 19:02:52,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:52,343 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:52,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:52,351 INFO L225 Difference]: With dead ends: 2923 [2020-01-16 19:02:52,351 INFO L226 Difference]: Without dead ends: 2908 [2020-01-16 19:02:52,351 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:52,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2020-01-16 19:02:52,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 1574. [2020-01-16 19:02:52,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 19:02:52,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7067 transitions. [2020-01-16 19:02:52,417 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7067 transitions. Word has length 28 [2020-01-16 19:02:52,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:52,417 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7067 transitions. [2020-01-16 19:02:52,417 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:52,417 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7067 transitions. [2020-01-16 19:02:52,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:52,421 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:52,421 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:52,421 INFO L426 AbstractCegarLoop]: === Iteration 256 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:52,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:52,421 INFO L82 PathProgramCache]: Analyzing trace with hash 961597446, now seen corresponding path program 248 times [2020-01-16 19:02:52,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:52,422 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640344419] [2020-01-16 19:02:52,422 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:52,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:52,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:52,952 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640344419] [2020-01-16 19:02:52,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:52,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:52,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416745512] [2020-01-16 19:02:52,952 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:52,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:52,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:52,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:52,953 INFO L87 Difference]: Start difference. First operand 1574 states and 7067 transitions. Second operand 11 states. [2020-01-16 19:02:53,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:53,163 INFO L93 Difference]: Finished difference Result 2924 states and 11675 transitions. [2020-01-16 19:02:53,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:53,165 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:53,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:53,173 INFO L225 Difference]: With dead ends: 2924 [2020-01-16 19:02:53,173 INFO L226 Difference]: Without dead ends: 2903 [2020-01-16 19:02:53,174 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:53,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2903 states. [2020-01-16 19:02:53,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2903 to 1569. [2020-01-16 19:02:53,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 19:02:53,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7054 transitions. [2020-01-16 19:02:53,251 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7054 transitions. Word has length 28 [2020-01-16 19:02:53,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:53,251 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7054 transitions. [2020-01-16 19:02:53,252 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:53,252 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7054 transitions. [2020-01-16 19:02:53,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:53,254 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:53,254 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:53,254 INFO L426 AbstractCegarLoop]: === Iteration 257 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:53,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:53,255 INFO L82 PathProgramCache]: Analyzing trace with hash -318334854, now seen corresponding path program 249 times [2020-01-16 19:02:53,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:53,255 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410607553] [2020-01-16 19:02:53,255 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:53,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:53,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:53,800 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410607553] [2020-01-16 19:02:53,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:53,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:53,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029978048] [2020-01-16 19:02:53,801 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:53,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:53,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:53,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:53,801 INFO L87 Difference]: Start difference. First operand 1569 states and 7054 transitions. Second operand 11 states. [2020-01-16 19:02:53,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:53,994 INFO L93 Difference]: Finished difference Result 2920 states and 11667 transitions. [2020-01-16 19:02:53,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:53,994 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:53,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:54,002 INFO L225 Difference]: With dead ends: 2920 [2020-01-16 19:02:54,002 INFO L226 Difference]: Without dead ends: 2905 [2020-01-16 19:02:54,002 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:54,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2905 states. [2020-01-16 19:02:54,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2905 to 1573. [2020-01-16 19:02:54,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:02:54,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7061 transitions. [2020-01-16 19:02:54,070 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7061 transitions. Word has length 28 [2020-01-16 19:02:54,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:54,071 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7061 transitions. [2020-01-16 19:02:54,071 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:54,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7061 transitions. [2020-01-16 19:02:54,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:54,073 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:54,073 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:54,073 INFO L426 AbstractCegarLoop]: === Iteration 258 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:54,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:54,073 INFO L82 PathProgramCache]: Analyzing trace with hash -145087162, now seen corresponding path program 250 times [2020-01-16 19:02:54,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:54,074 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616781702] [2020-01-16 19:02:54,074 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:54,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:54,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:54,605 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616781702] [2020-01-16 19:02:54,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:54,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:54,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433502529] [2020-01-16 19:02:54,605 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:54,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:54,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:54,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:54,606 INFO L87 Difference]: Start difference. First operand 1573 states and 7061 transitions. Second operand 11 states. [2020-01-16 19:02:54,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:54,798 INFO L93 Difference]: Finished difference Result 2919 states and 11661 transitions. [2020-01-16 19:02:54,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:54,799 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:54,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:54,807 INFO L225 Difference]: With dead ends: 2919 [2020-01-16 19:02:54,807 INFO L226 Difference]: Without dead ends: 2901 [2020-01-16 19:02:54,807 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:54,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2901 states. [2020-01-16 19:02:54,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2901 to 1569. [2020-01-16 19:02:54,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 19:02:54,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7050 transitions. [2020-01-16 19:02:54,873 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7050 transitions. Word has length 28 [2020-01-16 19:02:54,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:54,873 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7050 transitions. [2020-01-16 19:02:54,873 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:54,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7050 transitions. [2020-01-16 19:02:54,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:54,875 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:54,875 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:54,875 INFO L426 AbstractCegarLoop]: === Iteration 259 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:54,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:54,876 INFO L82 PathProgramCache]: Analyzing trace with hash 2037308602, now seen corresponding path program 251 times [2020-01-16 19:02:54,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:54,876 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978298569] [2020-01-16 19:02:54,876 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:54,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:55,417 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 19:02:55,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:55,424 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978298569] [2020-01-16 19:02:55,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:55,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:55,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895539206] [2020-01-16 19:02:55,425 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:55,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:55,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:55,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:55,425 INFO L87 Difference]: Start difference. First operand 1569 states and 7050 transitions. Second operand 11 states. [2020-01-16 19:02:55,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:55,700 INFO L93 Difference]: Finished difference Result 2922 states and 11667 transitions. [2020-01-16 19:02:55,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:55,700 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:55,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:55,707 INFO L225 Difference]: With dead ends: 2922 [2020-01-16 19:02:55,707 INFO L226 Difference]: Without dead ends: 2906 [2020-01-16 19:02:55,707 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:55,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2906 states. [2020-01-16 19:02:55,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2906 to 1573. [2020-01-16 19:02:55,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:02:55,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7057 transitions. [2020-01-16 19:02:55,774 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7057 transitions. Word has length 28 [2020-01-16 19:02:55,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:55,774 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7057 transitions. [2020-01-16 19:02:55,774 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:55,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7057 transitions. [2020-01-16 19:02:55,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:55,777 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:55,777 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:55,777 INFO L426 AbstractCegarLoop]: === Iteration 260 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:55,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:55,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1465853796, now seen corresponding path program 252 times [2020-01-16 19:02:55,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:55,777 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076117888] [2020-01-16 19:02:55,777 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:55,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:56,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:56,309 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076117888] [2020-01-16 19:02:56,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:56,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:56,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836176869] [2020-01-16 19:02:56,310 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:56,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:56,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:56,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:56,310 INFO L87 Difference]: Start difference. First operand 1573 states and 7057 transitions. Second operand 11 states. [2020-01-16 19:02:56,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:56,551 INFO L93 Difference]: Finished difference Result 2920 states and 11659 transitions. [2020-01-16 19:02:56,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:56,551 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:56,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:56,559 INFO L225 Difference]: With dead ends: 2920 [2020-01-16 19:02:56,559 INFO L226 Difference]: Without dead ends: 2898 [2020-01-16 19:02:56,559 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:56,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2898 states. [2020-01-16 19:02:56,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2898 to 1565. [2020-01-16 19:02:56,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 19:02:56,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7039 transitions. [2020-01-16 19:02:56,625 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7039 transitions. Word has length 28 [2020-01-16 19:02:56,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:56,625 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7039 transitions. [2020-01-16 19:02:56,625 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:56,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7039 transitions. [2020-01-16 19:02:56,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:56,628 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:56,628 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:56,628 INFO L426 AbstractCegarLoop]: === Iteration 261 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:56,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:56,628 INFO L82 PathProgramCache]: Analyzing trace with hash 227398052, now seen corresponding path program 253 times [2020-01-16 19:02:56,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:56,628 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416509126] [2020-01-16 19:02:56,628 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:56,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:57,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:57,162 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416509126] [2020-01-16 19:02:57,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:57,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:57,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724076767] [2020-01-16 19:02:57,163 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:57,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:57,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:57,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:57,163 INFO L87 Difference]: Start difference. First operand 1565 states and 7039 transitions. Second operand 11 states. [2020-01-16 19:02:57,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:57,429 INFO L93 Difference]: Finished difference Result 2935 states and 11697 transitions. [2020-01-16 19:02:57,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:57,429 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:57,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:57,437 INFO L225 Difference]: With dead ends: 2935 [2020-01-16 19:02:57,437 INFO L226 Difference]: Without dead ends: 2920 [2020-01-16 19:02:57,437 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:57,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2920 states. [2020-01-16 19:02:57,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2920 to 1576. [2020-01-16 19:02:57,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 19:02:57,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7068 transitions. [2020-01-16 19:02:57,503 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7068 transitions. Word has length 28 [2020-01-16 19:02:57,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:57,504 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7068 transitions. [2020-01-16 19:02:57,504 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:57,504 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7068 transitions. [2020-01-16 19:02:57,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:57,506 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:57,506 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:57,506 INFO L426 AbstractCegarLoop]: === Iteration 262 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:57,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:57,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1716803048, now seen corresponding path program 254 times [2020-01-16 19:02:57,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:57,507 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035983147] [2020-01-16 19:02:57,507 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:57,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:58,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:58,044 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035983147] [2020-01-16 19:02:58,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:58,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:58,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202778687] [2020-01-16 19:02:58,045 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:58,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:58,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:58,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:58,045 INFO L87 Difference]: Start difference. First operand 1576 states and 7068 transitions. Second operand 11 states. [2020-01-16 19:02:58,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:58,207 INFO L93 Difference]: Finished difference Result 2940 states and 11701 transitions. [2020-01-16 19:02:58,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:58,208 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:58,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:58,215 INFO L225 Difference]: With dead ends: 2940 [2020-01-16 19:02:58,215 INFO L226 Difference]: Without dead ends: 2914 [2020-01-16 19:02:58,216 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:58,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2914 states. [2020-01-16 19:02:58,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2914 to 1570. [2020-01-16 19:02:58,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 19:02:58,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7052 transitions. [2020-01-16 19:02:58,281 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7052 transitions. Word has length 28 [2020-01-16 19:02:58,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:58,282 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7052 transitions. [2020-01-16 19:02:58,282 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:58,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7052 transitions. [2020-01-16 19:02:58,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:58,284 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:58,284 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:58,284 INFO L426 AbstractCegarLoop]: === Iteration 263 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:58,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:58,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1918772708, now seen corresponding path program 255 times [2020-01-16 19:02:58,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:58,285 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960779187] [2020-01-16 19:02:58,285 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:58,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:58,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:58,818 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960779187] [2020-01-16 19:02:58,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:58,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:58,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069405597] [2020-01-16 19:02:58,818 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:58,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:58,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:58,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:58,819 INFO L87 Difference]: Start difference. First operand 1570 states and 7052 transitions. Second operand 11 states. [2020-01-16 19:02:59,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:59,044 INFO L93 Difference]: Finished difference Result 2927 states and 11676 transitions. [2020-01-16 19:02:59,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:59,044 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:59,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:59,052 INFO L225 Difference]: With dead ends: 2927 [2020-01-16 19:02:59,052 INFO L226 Difference]: Without dead ends: 2912 [2020-01-16 19:02:59,052 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:59,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2912 states. [2020-01-16 19:02:59,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2912 to 1574. [2020-01-16 19:02:59,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 19:02:59,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7059 transitions. [2020-01-16 19:02:59,119 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7059 transitions. Word has length 28 [2020-01-16 19:02:59,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:59,119 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7059 transitions. [2020-01-16 19:02:59,119 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:59,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7059 transitions. [2020-01-16 19:02:59,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:59,121 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:59,121 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:59,121 INFO L426 AbstractCegarLoop]: === Iteration 264 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:59,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:59,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1745525016, now seen corresponding path program 256 times [2020-01-16 19:02:59,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:59,122 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161131906] [2020-01-16 19:02:59,122 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:59,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:02:59,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:02:59,660 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161131906] [2020-01-16 19:02:59,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:02:59,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:02:59,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467325316] [2020-01-16 19:02:59,661 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:02:59,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:02:59,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:02:59,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:02:59,661 INFO L87 Difference]: Start difference. First operand 1574 states and 7059 transitions. Second operand 11 states. [2020-01-16 19:02:59,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:02:59,853 INFO L93 Difference]: Finished difference Result 2926 states and 11670 transitions. [2020-01-16 19:02:59,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:02:59,854 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:02:59,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:02:59,860 INFO L225 Difference]: With dead ends: 2926 [2020-01-16 19:02:59,861 INFO L226 Difference]: Without dead ends: 2908 [2020-01-16 19:02:59,861 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:02:59,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2020-01-16 19:02:59,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 1570. [2020-01-16 19:02:59,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 19:02:59,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7048 transitions. [2020-01-16 19:02:59,926 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7048 transitions. Word has length 28 [2020-01-16 19:02:59,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:02:59,927 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7048 transitions. [2020-01-16 19:02:59,927 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:02:59,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7048 transitions. [2020-01-16 19:02:59,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:02:59,929 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:02:59,929 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:02:59,929 INFO L426 AbstractCegarLoop]: === Iteration 265 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:02:59,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:02:59,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1502453092, now seen corresponding path program 257 times [2020-01-16 19:02:59,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:02:59,929 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115263195] [2020-01-16 19:02:59,930 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:02:59,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:00,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:00,469 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115263195] [2020-01-16 19:03:00,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:00,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:00,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352255108] [2020-01-16 19:03:00,469 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:00,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:00,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:00,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:00,469 INFO L87 Difference]: Start difference. First operand 1570 states and 7048 transitions. Second operand 11 states. [2020-01-16 19:03:00,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:00,647 INFO L93 Difference]: Finished difference Result 2938 states and 11692 transitions. [2020-01-16 19:03:00,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:00,647 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:00,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:00,655 INFO L225 Difference]: With dead ends: 2938 [2020-01-16 19:03:00,655 INFO L226 Difference]: Without dead ends: 2918 [2020-01-16 19:03:00,655 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:00,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2918 states. [2020-01-16 19:03:00,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2918 to 1575. [2020-01-16 19:03:00,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:03:00,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7056 transitions. [2020-01-16 19:03:00,721 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7056 transitions. Word has length 28 [2020-01-16 19:03:00,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:00,722 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7056 transitions. [2020-01-16 19:03:00,722 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:00,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7056 transitions. [2020-01-16 19:03:00,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:00,724 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:00,724 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:00,724 INFO L426 AbstractCegarLoop]: === Iteration 266 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:00,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:00,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1476356900, now seen corresponding path program 258 times [2020-01-16 19:03:00,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:00,725 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883261916] [2020-01-16 19:03:00,725 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:00,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:01,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:01,237 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883261916] [2020-01-16 19:03:01,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:01,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:01,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117048] [2020-01-16 19:03:01,238 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:01,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:01,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:01,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:01,238 INFO L87 Difference]: Start difference. First operand 1575 states and 7056 transitions. Second operand 11 states. [2020-01-16 19:03:01,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:01,465 INFO L93 Difference]: Finished difference Result 2932 states and 11676 transitions. [2020-01-16 19:03:01,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:01,465 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:01,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:01,472 INFO L225 Difference]: With dead ends: 2932 [2020-01-16 19:03:01,473 INFO L226 Difference]: Without dead ends: 2908 [2020-01-16 19:03:01,473 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:01,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2020-01-16 19:03:01,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 1565. [2020-01-16 19:03:01,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 19:03:01,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7034 transitions. [2020-01-16 19:03:01,538 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7034 transitions. Word has length 28 [2020-01-16 19:03:01,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:01,539 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7034 transitions. [2020-01-16 19:03:01,539 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:01,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7034 transitions. [2020-01-16 19:03:01,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:01,541 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:01,541 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:01,541 INFO L426 AbstractCegarLoop]: === Iteration 267 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:01,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:01,541 INFO L82 PathProgramCache]: Analyzing trace with hash 982603654, now seen corresponding path program 259 times [2020-01-16 19:03:01,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:01,542 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039629625] [2020-01-16 19:03:01,542 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:01,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:02,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:02,057 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039629625] [2020-01-16 19:03:02,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:02,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:02,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264001279] [2020-01-16 19:03:02,057 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:02,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:02,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:02,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:02,057 INFO L87 Difference]: Start difference. First operand 1565 states and 7034 transitions. Second operand 11 states. [2020-01-16 19:03:02,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:02,250 INFO L93 Difference]: Finished difference Result 2940 states and 11704 transitions. [2020-01-16 19:03:02,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:02,250 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:02,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:02,258 INFO L225 Difference]: With dead ends: 2940 [2020-01-16 19:03:02,258 INFO L226 Difference]: Without dead ends: 2924 [2020-01-16 19:03:02,258 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:02,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2924 states. [2020-01-16 19:03:02,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2924 to 1577. [2020-01-16 19:03:02,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 19:03:02,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7065 transitions. [2020-01-16 19:03:02,324 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7065 transitions. Word has length 28 [2020-01-16 19:03:02,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:02,324 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7065 transitions. [2020-01-16 19:03:02,324 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:02,325 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7065 transitions. [2020-01-16 19:03:02,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:02,327 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:02,327 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:02,327 INFO L426 AbstractCegarLoop]: === Iteration 268 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:02,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:02,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1727306152, now seen corresponding path program 260 times [2020-01-16 19:03:02,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:02,327 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282479436] [2020-01-16 19:03:02,327 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:02,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:02,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:02,850 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282479436] [2020-01-16 19:03:02,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:02,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:02,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657895817] [2020-01-16 19:03:02,850 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:02,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:02,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:02,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:02,851 INFO L87 Difference]: Start difference. First operand 1577 states and 7065 transitions. Second operand 11 states. [2020-01-16 19:03:03,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:03,002 INFO L93 Difference]: Finished difference Result 2944 states and 11705 transitions. [2020-01-16 19:03:03,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:03,002 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:03,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:03,010 INFO L225 Difference]: With dead ends: 2944 [2020-01-16 19:03:03,010 INFO L226 Difference]: Without dead ends: 2917 [2020-01-16 19:03:03,010 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:03,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2917 states. [2020-01-16 19:03:03,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2917 to 1570. [2020-01-16 19:03:03,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 19:03:03,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7047 transitions. [2020-01-16 19:03:03,076 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7047 transitions. Word has length 28 [2020-01-16 19:03:03,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:03,076 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7047 transitions. [2020-01-16 19:03:03,076 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:03,077 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7047 transitions. [2020-01-16 19:03:03,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:03,079 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:03,079 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:03,079 INFO L426 AbstractCegarLoop]: === Iteration 269 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:03,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:03,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1163567106, now seen corresponding path program 261 times [2020-01-16 19:03:03,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:03,079 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861790401] [2020-01-16 19:03:03,079 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:03,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:03,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:03,597 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861790401] [2020-01-16 19:03:03,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:03,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:03,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106205984] [2020-01-16 19:03:03,597 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:03,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:03,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:03,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:03,598 INFO L87 Difference]: Start difference. First operand 1570 states and 7047 transitions. Second operand 11 states. [2020-01-16 19:03:03,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:03,776 INFO L93 Difference]: Finished difference Result 2931 states and 11680 transitions. [2020-01-16 19:03:03,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:03,776 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:03,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:03,784 INFO L225 Difference]: With dead ends: 2931 [2020-01-16 19:03:03,784 INFO L226 Difference]: Without dead ends: 2915 [2020-01-16 19:03:03,784 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:03,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2915 states. [2020-01-16 19:03:03,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2915 to 1574. [2020-01-16 19:03:03,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 19:03:03,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7054 transitions. [2020-01-16 19:03:03,850 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7054 transitions. Word has length 28 [2020-01-16 19:03:03,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:03,850 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7054 transitions. [2020-01-16 19:03:03,850 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:03,850 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7054 transitions. [2020-01-16 19:03:03,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:03,852 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:03,852 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:03,852 INFO L426 AbstractCegarLoop]: === Iteration 270 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:03,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:03,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1735021912, now seen corresponding path program 262 times [2020-01-16 19:03:03,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:03,853 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872857638] [2020-01-16 19:03:03,853 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:03,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:04,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:04,368 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872857638] [2020-01-16 19:03:04,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:04,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:04,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523796722] [2020-01-16 19:03:04,368 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:04,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:04,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:04,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:04,369 INFO L87 Difference]: Start difference. First operand 1574 states and 7054 transitions. Second operand 11 states. [2020-01-16 19:03:04,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:04,553 INFO L93 Difference]: Finished difference Result 2929 states and 11672 transitions. [2020-01-16 19:03:04,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:04,553 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:04,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:04,560 INFO L225 Difference]: With dead ends: 2929 [2020-01-16 19:03:04,560 INFO L226 Difference]: Without dead ends: 2911 [2020-01-16 19:03:04,560 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:04,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2020-01-16 19:03:04,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 1570. [2020-01-16 19:03:04,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 19:03:04,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7043 transitions. [2020-01-16 19:03:04,626 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7043 transitions. Word has length 28 [2020-01-16 19:03:04,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:04,626 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7043 transitions. [2020-01-16 19:03:04,626 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:04,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7043 transitions. [2020-01-16 19:03:04,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:04,629 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:04,629 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:04,629 INFO L426 AbstractCegarLoop]: === Iteration 271 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:04,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:04,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1192076350, now seen corresponding path program 263 times [2020-01-16 19:03:04,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:04,629 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625015944] [2020-01-16 19:03:04,629 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:04,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:05,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:05,148 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625015944] [2020-01-16 19:03:05,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:05,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:05,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481044423] [2020-01-16 19:03:05,148 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:05,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:05,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:05,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:05,149 INFO L87 Difference]: Start difference. First operand 1570 states and 7043 transitions. Second operand 11 states. [2020-01-16 19:03:05,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:05,310 INFO L93 Difference]: Finished difference Result 2940 states and 11692 transitions. [2020-01-16 19:03:05,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:05,311 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:05,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:05,318 INFO L225 Difference]: With dead ends: 2940 [2020-01-16 19:03:05,319 INFO L226 Difference]: Without dead ends: 2920 [2020-01-16 19:03:05,319 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:05,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2920 states. [2020-01-16 19:03:05,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2920 to 1575. [2020-01-16 19:03:05,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:03:05,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7051 transitions. [2020-01-16 19:03:05,385 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7051 transitions. Word has length 28 [2020-01-16 19:03:05,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:05,385 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7051 transitions. [2020-01-16 19:03:05,385 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:05,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7051 transitions. [2020-01-16 19:03:05,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:05,387 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:05,387 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:05,387 INFO L426 AbstractCegarLoop]: === Iteration 272 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:05,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:05,388 INFO L82 PathProgramCache]: Analyzing trace with hash -124080954, now seen corresponding path program 264 times [2020-01-16 19:03:05,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:05,388 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022497315] [2020-01-16 19:03:05,388 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:05,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:05,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:05,924 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022497315] [2020-01-16 19:03:05,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:05,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:05,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595930838] [2020-01-16 19:03:05,924 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:05,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:05,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:05,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:05,925 INFO L87 Difference]: Start difference. First operand 1575 states and 7051 transitions. Second operand 11 states. [2020-01-16 19:03:06,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:06,111 INFO L93 Difference]: Finished difference Result 2934 states and 11676 transitions. [2020-01-16 19:03:06,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:06,112 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:06,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:06,119 INFO L225 Difference]: With dead ends: 2934 [2020-01-16 19:03:06,119 INFO L226 Difference]: Without dead ends: 2905 [2020-01-16 19:03:06,119 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:06,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2905 states. [2020-01-16 19:03:06,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2905 to 1560. [2020-01-16 19:03:06,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1560 states. [2020-01-16 19:03:06,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1560 states to 1560 states and 7020 transitions. [2020-01-16 19:03:06,185 INFO L78 Accepts]: Start accepts. Automaton has 1560 states and 7020 transitions. Word has length 28 [2020-01-16 19:03:06,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:06,185 INFO L478 AbstractCegarLoop]: Abstraction has 1560 states and 7020 transitions. [2020-01-16 19:03:06,185 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:06,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1560 states and 7020 transitions. [2020-01-16 19:03:06,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:06,187 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:06,187 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:06,188 INFO L426 AbstractCegarLoop]: === Iteration 273 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:06,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:06,188 INFO L82 PathProgramCache]: Analyzing trace with hash 155271406, now seen corresponding path program 265 times [2020-01-16 19:03:06,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:06,188 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473762750] [2020-01-16 19:03:06,188 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:06,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:06,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:06,718 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473762750] [2020-01-16 19:03:06,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:06,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:06,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502031662] [2020-01-16 19:03:06,718 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:06,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:06,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:06,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:06,719 INFO L87 Difference]: Start difference. First operand 1560 states and 7020 transitions. Second operand 11 states. [2020-01-16 19:03:06,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:06,902 INFO L93 Difference]: Finished difference Result 2950 states and 11754 transitions. [2020-01-16 19:03:06,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:06,903 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:06,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:06,910 INFO L225 Difference]: With dead ends: 2950 [2020-01-16 19:03:06,910 INFO L226 Difference]: Without dead ends: 2935 [2020-01-16 19:03:06,911 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:06,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2935 states. [2020-01-16 19:03:06,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2935 to 1577. [2020-01-16 19:03:06,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 19:03:06,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7079 transitions. [2020-01-16 19:03:06,977 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7079 transitions. Word has length 28 [2020-01-16 19:03:06,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:06,977 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7079 transitions. [2020-01-16 19:03:06,977 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:06,977 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7079 transitions. [2020-01-16 19:03:06,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:06,979 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:06,979 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:06,980 INFO L426 AbstractCegarLoop]: === Iteration 274 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:06,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:06,980 INFO L82 PathProgramCache]: Analyzing trace with hash 899973904, now seen corresponding path program 266 times [2020-01-16 19:03:06,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:06,980 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372766893] [2020-01-16 19:03:06,980 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:06,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:07,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:07,503 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372766893] [2020-01-16 19:03:07,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:07,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:07,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171897345] [2020-01-16 19:03:07,503 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:07,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:07,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:07,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:07,504 INFO L87 Difference]: Start difference. First operand 1577 states and 7079 transitions. Second operand 11 states. [2020-01-16 19:03:07,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:07,712 INFO L93 Difference]: Finished difference Result 2951 states and 11751 transitions. [2020-01-16 19:03:07,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:07,712 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:07,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:07,719 INFO L225 Difference]: With dead ends: 2951 [2020-01-16 19:03:07,720 INFO L226 Difference]: Without dead ends: 2930 [2020-01-16 19:03:07,720 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:07,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2020-01-16 19:03:07,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1572. [2020-01-16 19:03:07,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 19:03:07,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7065 transitions. [2020-01-16 19:03:07,785 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7065 transitions. Word has length 28 [2020-01-16 19:03:07,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:07,786 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7065 transitions. [2020-01-16 19:03:07,786 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:07,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7065 transitions. [2020-01-16 19:03:07,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:07,788 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:07,788 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:07,788 INFO L426 AbstractCegarLoop]: === Iteration 275 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:07,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:07,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1766212364, now seen corresponding path program 267 times [2020-01-16 19:03:07,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:07,789 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532520314] [2020-01-16 19:03:07,789 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:07,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:08,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:08,313 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532520314] [2020-01-16 19:03:08,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:08,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:08,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152894409] [2020-01-16 19:03:08,313 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:08,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:08,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:08,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:08,314 INFO L87 Difference]: Start difference. First operand 1572 states and 7065 transitions. Second operand 11 states. [2020-01-16 19:03:08,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:08,524 INFO L93 Difference]: Finished difference Result 2955 states and 11758 transitions. [2020-01-16 19:03:08,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:08,525 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:08,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:08,532 INFO L225 Difference]: With dead ends: 2955 [2020-01-16 19:03:08,533 INFO L226 Difference]: Without dead ends: 2940 [2020-01-16 19:03:08,533 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:08,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2940 states. [2020-01-16 19:03:08,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2940 to 1578. [2020-01-16 19:03:08,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 19:03:08,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7076 transitions. [2020-01-16 19:03:08,599 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7076 transitions. Word has length 28 [2020-01-16 19:03:08,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:08,599 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7076 transitions. [2020-01-16 19:03:08,599 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:08,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7076 transitions. [2020-01-16 19:03:08,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:08,601 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:08,602 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:08,602 INFO L426 AbstractCegarLoop]: === Iteration 276 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:08,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:08,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1039349936, now seen corresponding path program 268 times [2020-01-16 19:03:08,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:08,602 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015284782] [2020-01-16 19:03:08,602 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:08,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:09,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:09,127 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015284782] [2020-01-16 19:03:09,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:09,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:09,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259889365] [2020-01-16 19:03:09,127 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:09,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:09,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:09,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:09,128 INFO L87 Difference]: Start difference. First operand 1578 states and 7076 transitions. Second operand 11 states. [2020-01-16 19:03:09,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:09,284 INFO L93 Difference]: Finished difference Result 2960 states and 11762 transitions. [2020-01-16 19:03:09,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:09,284 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:09,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:09,291 INFO L225 Difference]: With dead ends: 2960 [2020-01-16 19:03:09,291 INFO L226 Difference]: Without dead ends: 2934 [2020-01-16 19:03:09,291 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:09,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2934 states. [2020-01-16 19:03:09,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2934 to 1572. [2020-01-16 19:03:09,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 19:03:09,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7059 transitions. [2020-01-16 19:03:09,357 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7059 transitions. Word has length 28 [2020-01-16 19:03:09,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:09,357 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7059 transitions. [2020-01-16 19:03:09,357 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:09,358 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7059 transitions. [2020-01-16 19:03:09,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:09,360 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:09,360 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:09,360 INFO L426 AbstractCegarLoop]: === Iteration 277 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:09,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:09,360 INFO L82 PathProgramCache]: Analyzing trace with hash -173111476, now seen corresponding path program 269 times [2020-01-16 19:03:09,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:09,360 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816972925] [2020-01-16 19:03:09,360 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:09,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:09,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:09,885 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816972925] [2020-01-16 19:03:09,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:09,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:09,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856086377] [2020-01-16 19:03:09,885 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:09,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:09,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:09,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:09,886 INFO L87 Difference]: Start difference. First operand 1572 states and 7059 transitions. Second operand 11 states. [2020-01-16 19:03:10,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:10,071 INFO L93 Difference]: Finished difference Result 2958 states and 11759 transitions. [2020-01-16 19:03:10,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:10,072 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:10,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:10,079 INFO L225 Difference]: With dead ends: 2958 [2020-01-16 19:03:10,079 INFO L226 Difference]: Without dead ends: 2942 [2020-01-16 19:03:10,079 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:10,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2020-01-16 19:03:10,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 1579. [2020-01-16 19:03:10,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 19:03:10,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7072 transitions. [2020-01-16 19:03:10,146 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7072 transitions. Word has length 28 [2020-01-16 19:03:10,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:10,146 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7072 transitions. [2020-01-16 19:03:10,146 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:10,146 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7072 transitions. [2020-01-16 19:03:10,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:10,148 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:10,148 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:10,148 INFO L426 AbstractCegarLoop]: === Iteration 278 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:10,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:10,148 INFO L82 PathProgramCache]: Analyzing trace with hash 571591022, now seen corresponding path program 270 times [2020-01-16 19:03:10,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:10,149 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131214156] [2020-01-16 19:03:10,149 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:10,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:10,583 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 31 [2020-01-16 19:03:10,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:10,708 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131214156] [2020-01-16 19:03:10,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:10,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:10,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517946478] [2020-01-16 19:03:10,709 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:10,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:10,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:10,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:10,709 INFO L87 Difference]: Start difference. First operand 1579 states and 7072 transitions. Second operand 11 states. [2020-01-16 19:03:10,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:10,888 INFO L93 Difference]: Finished difference Result 2962 states and 11760 transitions. [2020-01-16 19:03:10,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:10,889 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:10,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:10,896 INFO L225 Difference]: With dead ends: 2962 [2020-01-16 19:03:10,896 INFO L226 Difference]: Without dead ends: 2929 [2020-01-16 19:03:10,896 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:10,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2929 states. [2020-01-16 19:03:10,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2929 to 1566. [2020-01-16 19:03:10,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1566 states. [2020-01-16 19:03:10,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 7042 transitions. [2020-01-16 19:03:10,962 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 7042 transitions. Word has length 28 [2020-01-16 19:03:10,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:10,962 INFO L478 AbstractCegarLoop]: Abstraction has 1566 states and 7042 transitions. [2020-01-16 19:03:10,962 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:10,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 7042 transitions. [2020-01-16 19:03:10,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:10,964 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:10,964 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:10,964 INFO L426 AbstractCegarLoop]: === Iteration 279 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:10,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:10,965 INFO L82 PathProgramCache]: Analyzing trace with hash -669941720, now seen corresponding path program 271 times [2020-01-16 19:03:10,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:10,965 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526644745] [2020-01-16 19:03:10,965 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:10,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:11,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:11,503 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526644745] [2020-01-16 19:03:11,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:11,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:11,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106912088] [2020-01-16 19:03:11,503 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:11,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:11,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:11,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:11,504 INFO L87 Difference]: Start difference. First operand 1566 states and 7042 transitions. Second operand 11 states. [2020-01-16 19:03:11,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:11,708 INFO L93 Difference]: Finished difference Result 2944 states and 11736 transitions. [2020-01-16 19:03:11,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:11,709 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:11,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:11,716 INFO L225 Difference]: With dead ends: 2944 [2020-01-16 19:03:11,717 INFO L226 Difference]: Without dead ends: 2929 [2020-01-16 19:03:11,717 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:11,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2929 states. [2020-01-16 19:03:11,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2929 to 1576. [2020-01-16 19:03:11,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 19:03:11,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7070 transitions. [2020-01-16 19:03:11,783 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7070 transitions. Word has length 28 [2020-01-16 19:03:11,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:11,783 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7070 transitions. [2020-01-16 19:03:11,783 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:11,783 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7070 transitions. [2020-01-16 19:03:11,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:11,786 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:11,786 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:11,786 INFO L426 AbstractCegarLoop]: === Iteration 280 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:11,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:11,786 INFO L82 PathProgramCache]: Analyzing trace with hash 74760778, now seen corresponding path program 272 times [2020-01-16 19:03:11,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:11,786 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867045301] [2020-01-16 19:03:11,786 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:11,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:12,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:12,309 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867045301] [2020-01-16 19:03:12,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:12,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:12,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633033482] [2020-01-16 19:03:12,309 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:12,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:12,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:12,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:12,310 INFO L87 Difference]: Start difference. First operand 1576 states and 7070 transitions. Second operand 11 states. [2020-01-16 19:03:12,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:12,505 INFO L93 Difference]: Finished difference Result 2945 states and 11733 transitions. [2020-01-16 19:03:12,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:12,505 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:12,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:12,512 INFO L225 Difference]: With dead ends: 2945 [2020-01-16 19:03:12,512 INFO L226 Difference]: Without dead ends: 2924 [2020-01-16 19:03:12,513 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:12,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2924 states. [2020-01-16 19:03:12,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2924 to 1571. [2020-01-16 19:03:12,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:03:12,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7056 transitions. [2020-01-16 19:03:12,579 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7056 transitions. Word has length 28 [2020-01-16 19:03:12,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:12,579 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7056 transitions. [2020-01-16 19:03:12,579 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:12,579 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7056 transitions. [2020-01-16 19:03:12,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:12,581 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:12,581 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:12,581 INFO L426 AbstractCegarLoop]: === Iteration 281 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:12,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:12,582 INFO L82 PathProgramCache]: Analyzing trace with hash 2016710394, now seen corresponding path program 273 times [2020-01-16 19:03:12,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:12,582 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681015801] [2020-01-16 19:03:12,582 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:12,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:13,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:13,101 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681015801] [2020-01-16 19:03:13,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:13,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:13,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319893226] [2020-01-16 19:03:13,102 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:13,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:13,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:13,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:13,103 INFO L87 Difference]: Start difference. First operand 1571 states and 7056 transitions. Second operand 11 states. [2020-01-16 19:03:13,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:13,327 INFO L93 Difference]: Finished difference Result 2945 states and 11733 transitions. [2020-01-16 19:03:13,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:13,328 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:13,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:13,335 INFO L225 Difference]: With dead ends: 2945 [2020-01-16 19:03:13,335 INFO L226 Difference]: Without dead ends: 2930 [2020-01-16 19:03:13,335 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:13,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2020-01-16 19:03:13,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1576. [2020-01-16 19:03:13,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 19:03:13,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7065 transitions. [2020-01-16 19:03:13,401 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7065 transitions. Word has length 28 [2020-01-16 19:03:13,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:13,402 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7065 transitions. [2020-01-16 19:03:13,402 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:13,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7065 transitions. [2020-01-16 19:03:13,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:13,404 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:13,404 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:13,404 INFO L426 AbstractCegarLoop]: === Iteration 282 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:13,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:13,405 INFO L82 PathProgramCache]: Analyzing trace with hash -615604214, now seen corresponding path program 274 times [2020-01-16 19:03:13,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:13,405 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472497775] [2020-01-16 19:03:13,405 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:13,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:13,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:13,940 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472497775] [2020-01-16 19:03:13,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:13,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:13,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172213507] [2020-01-16 19:03:13,941 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:13,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:13,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:13,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:13,941 INFO L87 Difference]: Start difference. First operand 1576 states and 7065 transitions. Second operand 11 states. [2020-01-16 19:03:14,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:14,128 INFO L93 Difference]: Finished difference Result 2947 states and 11732 transitions. [2020-01-16 19:03:14,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:14,128 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:14,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:14,135 INFO L225 Difference]: With dead ends: 2947 [2020-01-16 19:03:14,135 INFO L226 Difference]: Without dead ends: 2925 [2020-01-16 19:03:14,135 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:14,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2925 states. [2020-01-16 19:03:14,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2925 to 1571. [2020-01-16 19:03:14,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:03:14,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7051 transitions. [2020-01-16 19:03:14,201 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7051 transitions. Word has length 28 [2020-01-16 19:03:14,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:14,201 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7051 transitions. [2020-01-16 19:03:14,202 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:14,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7051 transitions. [2020-01-16 19:03:14,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:14,204 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:14,204 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:14,204 INFO L426 AbstractCegarLoop]: === Iteration 283 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:14,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:14,204 INFO L82 PathProgramCache]: Analyzing trace with hash 77386554, now seen corresponding path program 275 times [2020-01-16 19:03:14,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:14,204 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099131065] [2020-01-16 19:03:14,204 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:14,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:14,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:14,751 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099131065] [2020-01-16 19:03:14,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:14,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:14,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802592403] [2020-01-16 19:03:14,751 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:14,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:14,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:14,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:14,752 INFO L87 Difference]: Start difference. First operand 1571 states and 7051 transitions. Second operand 11 states. [2020-01-16 19:03:14,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:14,968 INFO L93 Difference]: Finished difference Result 2948 states and 11735 transitions. [2020-01-16 19:03:14,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:14,969 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:14,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:14,976 INFO L225 Difference]: With dead ends: 2948 [2020-01-16 19:03:14,976 INFO L226 Difference]: Without dead ends: 2932 [2020-01-16 19:03:14,976 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:15,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2932 states. [2020-01-16 19:03:15,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2932 to 1577. [2020-01-16 19:03:15,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 19:03:15,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7062 transitions. [2020-01-16 19:03:15,042 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7062 transitions. Word has length 28 [2020-01-16 19:03:15,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:15,042 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7062 transitions. [2020-01-16 19:03:15,042 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:15,042 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7062 transitions. [2020-01-16 19:03:15,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:15,045 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:15,045 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:15,045 INFO L426 AbstractCegarLoop]: === Iteration 284 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:15,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:15,045 INFO L82 PathProgramCache]: Analyzing trace with hash 995336744, now seen corresponding path program 276 times [2020-01-16 19:03:15,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:15,045 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160246837] [2020-01-16 19:03:15,045 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:15,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:15,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:15,600 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160246837] [2020-01-16 19:03:15,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:15,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:15,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327852623] [2020-01-16 19:03:15,600 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:15,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:15,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:15,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:15,601 INFO L87 Difference]: Start difference. First operand 1577 states and 7062 transitions. Second operand 11 states. [2020-01-16 19:03:15,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:15,872 INFO L93 Difference]: Finished difference Result 2949 states and 11731 transitions. [2020-01-16 19:03:15,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:15,872 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:15,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:15,880 INFO L225 Difference]: With dead ends: 2949 [2020-01-16 19:03:15,880 INFO L226 Difference]: Without dead ends: 2921 [2020-01-16 19:03:15,880 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:15,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2020-01-16 19:03:15,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 1566. [2020-01-16 19:03:15,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1566 states. [2020-01-16 19:03:15,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 7037 transitions. [2020-01-16 19:03:15,946 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 7037 transitions. Word has length 28 [2020-01-16 19:03:15,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:15,946 INFO L478 AbstractCegarLoop]: Abstraction has 1566 states and 7037 transitions. [2020-01-16 19:03:15,946 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:15,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 7037 transitions. [2020-01-16 19:03:15,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:15,948 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:15,948 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:15,948 INFO L426 AbstractCegarLoop]: === Iteration 285 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:15,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:15,948 INFO L82 PathProgramCache]: Analyzing trace with hash -659438616, now seen corresponding path program 277 times [2020-01-16 19:03:15,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:15,949 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626333325] [2020-01-16 19:03:15,949 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:15,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:16,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:16,469 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626333325] [2020-01-16 19:03:16,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:16,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:16,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462141929] [2020-01-16 19:03:16,469 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:16,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:16,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:16,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:16,470 INFO L87 Difference]: Start difference. First operand 1566 states and 7037 transitions. Second operand 11 states. [2020-01-16 19:03:16,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:16,659 INFO L93 Difference]: Finished difference Result 2957 states and 11757 transitions. [2020-01-16 19:03:16,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:16,659 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:16,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:16,667 INFO L225 Difference]: With dead ends: 2957 [2020-01-16 19:03:16,667 INFO L226 Difference]: Without dead ends: 2942 [2020-01-16 19:03:16,667 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:16,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2020-01-16 19:03:16,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 1578. [2020-01-16 19:03:16,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 19:03:16,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7070 transitions. [2020-01-16 19:03:16,733 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7070 transitions. Word has length 28 [2020-01-16 19:03:16,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:16,733 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7070 transitions. [2020-01-16 19:03:16,733 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:16,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7070 transitions. [2020-01-16 19:03:16,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:16,735 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:16,735 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:16,736 INFO L426 AbstractCegarLoop]: === Iteration 286 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:16,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:16,736 INFO L82 PathProgramCache]: Analyzing trace with hash 829966380, now seen corresponding path program 278 times [2020-01-16 19:03:16,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:16,736 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315091676] [2020-01-16 19:03:16,736 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:16,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:17,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:17,260 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315091676] [2020-01-16 19:03:17,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:17,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:17,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891333715] [2020-01-16 19:03:17,261 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:17,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:17,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:17,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:17,261 INFO L87 Difference]: Start difference. First operand 1578 states and 7070 transitions. Second operand 11 states. [2020-01-16 19:03:17,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:17,478 INFO L93 Difference]: Finished difference Result 2962 states and 11761 transitions. [2020-01-16 19:03:17,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:17,479 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:17,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:17,486 INFO L225 Difference]: With dead ends: 2962 [2020-01-16 19:03:17,487 INFO L226 Difference]: Without dead ends: 2936 [2020-01-16 19:03:17,487 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:17,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2936 states. [2020-01-16 19:03:17,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2936 to 1572. [2020-01-16 19:03:17,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 19:03:17,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7053 transitions. [2020-01-16 19:03:17,554 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7053 transitions. Word has length 28 [2020-01-16 19:03:17,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:17,554 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7053 transitions. [2020-01-16 19:03:17,555 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:17,555 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7053 transitions. [2020-01-16 19:03:17,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:17,557 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:17,557 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:17,557 INFO L426 AbstractCegarLoop]: === Iteration 287 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:17,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:17,557 INFO L82 PathProgramCache]: Analyzing trace with hash 416272540, now seen corresponding path program 279 times [2020-01-16 19:03:17,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:17,557 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824754264] [2020-01-16 19:03:17,558 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:17,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:18,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:18,076 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824754264] [2020-01-16 19:03:18,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:18,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:18,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392625979] [2020-01-16 19:03:18,076 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:18,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:18,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:18,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:18,077 INFO L87 Difference]: Start difference. First operand 1572 states and 7053 transitions. Second operand 11 states. [2020-01-16 19:03:18,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:18,264 INFO L93 Difference]: Finished difference Result 2953 states and 11744 transitions. [2020-01-16 19:03:18,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:18,265 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:18,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:18,272 INFO L225 Difference]: With dead ends: 2953 [2020-01-16 19:03:18,272 INFO L226 Difference]: Without dead ends: 2938 [2020-01-16 19:03:18,273 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:18,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2020-01-16 19:03:18,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 1577. [2020-01-16 19:03:18,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 19:03:18,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7062 transitions. [2020-01-16 19:03:18,339 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7062 transitions. Word has length 28 [2020-01-16 19:03:18,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:18,340 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7062 transitions. [2020-01-16 19:03:18,340 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:18,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7062 transitions. [2020-01-16 19:03:18,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:18,342 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:18,342 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:18,342 INFO L426 AbstractCegarLoop]: === Iteration 288 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:18,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:18,342 INFO L82 PathProgramCache]: Analyzing trace with hash 2078925228, now seen corresponding path program 280 times [2020-01-16 19:03:18,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:18,342 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368084090] [2020-01-16 19:03:18,343 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:18,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:18,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:18,853 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368084090] [2020-01-16 19:03:18,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:18,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:18,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726987809] [2020-01-16 19:03:18,854 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:18,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:18,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:18,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:18,854 INFO L87 Difference]: Start difference. First operand 1577 states and 7062 transitions. Second operand 11 states. [2020-01-16 19:03:19,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:19,077 INFO L93 Difference]: Finished difference Result 2955 states and 11743 transitions. [2020-01-16 19:03:19,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:19,078 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:19,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:19,085 INFO L225 Difference]: With dead ends: 2955 [2020-01-16 19:03:19,086 INFO L226 Difference]: Without dead ends: 2933 [2020-01-16 19:03:19,086 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:19,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2933 states. [2020-01-16 19:03:19,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2933 to 1572. [2020-01-16 19:03:19,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 19:03:19,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7048 transitions. [2020-01-16 19:03:19,152 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7048 transitions. Word has length 28 [2020-01-16 19:03:19,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:19,152 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7048 transitions. [2020-01-16 19:03:19,152 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:19,152 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7048 transitions. [2020-01-16 19:03:19,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:19,154 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:19,154 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:19,154 INFO L426 AbstractCegarLoop]: === Iteration 289 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:19,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:19,155 INFO L82 PathProgramCache]: Analyzing trace with hash 832592156, now seen corresponding path program 281 times [2020-01-16 19:03:19,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:19,155 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109933060] [2020-01-16 19:03:19,155 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:19,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:19,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:19,691 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109933060] [2020-01-16 19:03:19,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:19,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:19,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256642791] [2020-01-16 19:03:19,691 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:19,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:19,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:19,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:19,692 INFO L87 Difference]: Start difference. First operand 1572 states and 7048 transitions. Second operand 11 states. [2020-01-16 19:03:19,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:19,886 INFO L93 Difference]: Finished difference Result 2966 states and 11765 transitions. [2020-01-16 19:03:19,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:19,886 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:19,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:19,894 INFO L225 Difference]: With dead ends: 2966 [2020-01-16 19:03:19,894 INFO L226 Difference]: Without dead ends: 2946 [2020-01-16 19:03:19,894 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:19,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2946 states. [2020-01-16 19:03:19,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2946 to 1580. [2020-01-16 19:03:19,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 19:03:19,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7062 transitions. [2020-01-16 19:03:19,960 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7062 transitions. Word has length 28 [2020-01-16 19:03:19,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:19,960 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7062 transitions. [2020-01-16 19:03:19,960 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:19,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7062 transitions. [2020-01-16 19:03:19,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:19,962 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:19,962 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:19,962 INFO L426 AbstractCegarLoop]: === Iteration 290 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:19,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:19,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1005839848, now seen corresponding path program 282 times [2020-01-16 19:03:19,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:19,963 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652897793] [2020-01-16 19:03:19,963 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:19,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:20,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:20,495 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652897793] [2020-01-16 19:03:20,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:20,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:20,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553142503] [2020-01-16 19:03:20,495 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:20,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:20,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:20,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:20,496 INFO L87 Difference]: Start difference. First operand 1580 states and 7062 transitions. Second operand 11 states. [2020-01-16 19:03:20,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:20,682 INFO L93 Difference]: Finished difference Result 2963 states and 11752 transitions. [2020-01-16 19:03:20,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:20,683 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:20,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:20,691 INFO L225 Difference]: With dead ends: 2963 [2020-01-16 19:03:20,691 INFO L226 Difference]: Without dead ends: 2932 [2020-01-16 19:03:20,691 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:20,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2932 states. [2020-01-16 19:03:20,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2932 to 1566. [2020-01-16 19:03:20,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1566 states. [2020-01-16 19:03:20,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 7031 transitions. [2020-01-16 19:03:20,761 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 7031 transitions. Word has length 28 [2020-01-16 19:03:20,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:20,761 INFO L478 AbstractCegarLoop]: Abstraction has 1566 states and 7031 transitions. [2020-01-16 19:03:20,762 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:20,762 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 7031 transitions. [2020-01-16 19:03:20,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:20,764 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:20,764 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:20,764 INFO L426 AbstractCegarLoop]: === Iteration 291 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:20,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:20,764 INFO L82 PathProgramCache]: Analyzing trace with hash 95766986, now seen corresponding path program 283 times [2020-01-16 19:03:20,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:20,765 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443944613] [2020-01-16 19:03:20,765 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:20,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:21,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:21,297 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443944613] [2020-01-16 19:03:21,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:21,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:21,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966713307] [2020-01-16 19:03:21,297 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:21,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:21,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:21,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:21,298 INFO L87 Difference]: Start difference. First operand 1566 states and 7031 transitions. Second operand 11 states. [2020-01-16 19:03:21,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:21,499 INFO L93 Difference]: Finished difference Result 2964 states and 11770 transitions. [2020-01-16 19:03:21,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:21,500 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:21,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:21,507 INFO L225 Difference]: With dead ends: 2964 [2020-01-16 19:03:21,507 INFO L226 Difference]: Without dead ends: 2948 [2020-01-16 19:03:21,507 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:21,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2948 states. [2020-01-16 19:03:21,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2948 to 1580. [2020-01-16 19:03:21,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 19:03:21,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7070 transitions. [2020-01-16 19:03:21,575 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7070 transitions. Word has length 28 [2020-01-16 19:03:21,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:21,576 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7070 transitions. [2020-01-16 19:03:21,576 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:21,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7070 transitions. [2020-01-16 19:03:21,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:21,578 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:21,578 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:21,578 INFO L426 AbstractCegarLoop]: === Iteration 292 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:21,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:21,578 INFO L82 PathProgramCache]: Analyzing trace with hash 840469484, now seen corresponding path program 284 times [2020-01-16 19:03:21,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:21,579 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598308012] [2020-01-16 19:03:21,579 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:21,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:22,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:22,109 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598308012] [2020-01-16 19:03:22,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:22,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:22,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989187875] [2020-01-16 19:03:22,109 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:22,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:22,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:22,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:22,110 INFO L87 Difference]: Start difference. First operand 1580 states and 7070 transitions. Second operand 11 states. [2020-01-16 19:03:22,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:22,294 INFO L93 Difference]: Finished difference Result 2968 states and 11771 transitions. [2020-01-16 19:03:22,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:22,295 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:22,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:22,302 INFO L225 Difference]: With dead ends: 2968 [2020-01-16 19:03:22,303 INFO L226 Difference]: Without dead ends: 2941 [2020-01-16 19:03:22,303 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:22,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2941 states. [2020-01-16 19:03:22,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2941 to 1573. [2020-01-16 19:03:22,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:03:22,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7050 transitions. [2020-01-16 19:03:22,369 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7050 transitions. Word has length 28 [2020-01-16 19:03:22,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:22,369 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7050 transitions. [2020-01-16 19:03:22,369 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:22,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7050 transitions. [2020-01-16 19:03:22,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:22,372 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:22,372 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:22,372 INFO L426 AbstractCegarLoop]: === Iteration 293 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:22,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:22,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1171478142, now seen corresponding path program 285 times [2020-01-16 19:03:22,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:22,372 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287138143] [2020-01-16 19:03:22,372 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:22,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:22,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:22,905 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287138143] [2020-01-16 19:03:22,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:22,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:22,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849418547] [2020-01-16 19:03:22,906 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:22,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:22,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:22,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:22,906 INFO L87 Difference]: Start difference. First operand 1573 states and 7050 transitions. Second operand 11 states. [2020-01-16 19:03:23,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:23,112 INFO L93 Difference]: Finished difference Result 2960 states and 11756 transitions. [2020-01-16 19:03:23,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:23,112 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:23,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:23,119 INFO L225 Difference]: With dead ends: 2960 [2020-01-16 19:03:23,119 INFO L226 Difference]: Without dead ends: 2944 [2020-01-16 19:03:23,119 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:23,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2944 states. [2020-01-16 19:03:23,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2944 to 1579. [2020-01-16 19:03:23,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 19:03:23,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7061 transitions. [2020-01-16 19:03:23,186 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7061 transitions. Word has length 28 [2020-01-16 19:03:23,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:23,186 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7061 transitions. [2020-01-16 19:03:23,186 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:23,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7061 transitions. [2020-01-16 19:03:23,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:23,188 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:23,188 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:23,188 INFO L426 AbstractCegarLoop]: === Iteration 294 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:23,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:23,189 INFO L82 PathProgramCache]: Analyzing trace with hash 2089428332, now seen corresponding path program 286 times [2020-01-16 19:03:23,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:23,189 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661772132] [2020-01-16 19:03:23,189 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:23,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:23,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:23,728 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661772132] [2020-01-16 19:03:23,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:23,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:23,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342766643] [2020-01-16 19:03:23,728 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:23,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:23,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:23,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:23,729 INFO L87 Difference]: Start difference. First operand 1579 states and 7061 transitions. Second operand 11 states. [2020-01-16 19:03:23,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:23,952 INFO L93 Difference]: Finished difference Result 2961 states and 11752 transitions. [2020-01-16 19:03:23,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:23,953 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:23,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:23,960 INFO L225 Difference]: With dead ends: 2961 [2020-01-16 19:03:23,960 INFO L226 Difference]: Without dead ends: 2938 [2020-01-16 19:03:23,960 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:24,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2020-01-16 19:03:24,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 1573. [2020-01-16 19:03:24,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:03:24,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7044 transitions. [2020-01-16 19:03:24,028 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7044 transitions. Word has length 28 [2020-01-16 19:03:24,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:24,029 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7044 transitions. [2020-01-16 19:03:24,029 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:24,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7044 transitions. [2020-01-16 19:03:24,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:24,032 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:24,032 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:24,032 INFO L426 AbstractCegarLoop]: === Iteration 295 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:24,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:24,033 INFO L82 PathProgramCache]: Analyzing trace with hash -767845698, now seen corresponding path program 287 times [2020-01-16 19:03:24,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:24,033 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719429803] [2020-01-16 19:03:24,033 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:24,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:24,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:24,583 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719429803] [2020-01-16 19:03:24,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:24,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:24,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455336511] [2020-01-16 19:03:24,583 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:24,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:24,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:24,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:24,584 INFO L87 Difference]: Start difference. First operand 1573 states and 7044 transitions. Second operand 11 states. [2020-01-16 19:03:24,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:24,727 INFO L93 Difference]: Finished difference Result 2970 states and 11769 transitions. [2020-01-16 19:03:24,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:24,728 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:24,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:24,735 INFO L225 Difference]: With dead ends: 2970 [2020-01-16 19:03:24,735 INFO L226 Difference]: Without dead ends: 2950 [2020-01-16 19:03:24,736 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:24,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2020-01-16 19:03:24,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 1581. [2020-01-16 19:03:24,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 19:03:24,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7058 transitions. [2020-01-16 19:03:24,801 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7058 transitions. Word has length 28 [2020-01-16 19:03:24,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:24,802 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7058 transitions. [2020-01-16 19:03:24,802 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:24,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7058 transitions. [2020-01-16 19:03:24,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:24,804 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:24,804 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:24,804 INFO L426 AbstractCegarLoop]: === Iteration 296 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:24,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:24,804 INFO L82 PathProgramCache]: Analyzing trace with hash -594598006, now seen corresponding path program 288 times [2020-01-16 19:03:24,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:24,805 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983982541] [2020-01-16 19:03:24,805 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:24,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:25,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:25,328 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983982541] [2020-01-16 19:03:25,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:25,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:25,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172257360] [2020-01-16 19:03:25,329 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:25,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:25,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:25,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:25,329 INFO L87 Difference]: Start difference. First operand 1581 states and 7058 transitions. Second operand 11 states. [2020-01-16 19:03:25,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:25,508 INFO L93 Difference]: Finished difference Result 2967 states and 11756 transitions. [2020-01-16 19:03:25,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:25,509 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:25,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:25,517 INFO L225 Difference]: With dead ends: 2967 [2020-01-16 19:03:25,517 INFO L226 Difference]: Without dead ends: 2929 [2020-01-16 19:03:25,517 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:25,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2929 states. [2020-01-16 19:03:25,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2929 to 1560. [2020-01-16 19:03:25,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1560 states. [2020-01-16 19:03:25,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1560 states to 1560 states and 7015 transitions. [2020-01-16 19:03:25,583 INFO L78 Accepts]: Start accepts. Automaton has 1560 states and 7015 transitions. Word has length 28 [2020-01-16 19:03:25,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:25,583 INFO L478 AbstractCegarLoop]: Abstraction has 1560 states and 7015 transitions. [2020-01-16 19:03:25,583 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:25,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1560 states and 7015 transitions. [2020-01-16 19:03:25,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:25,585 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:25,585 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:25,585 INFO L426 AbstractCegarLoop]: === Iteration 297 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:25,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:25,586 INFO L82 PathProgramCache]: Analyzing trace with hash 405091818, now seen corresponding path program 289 times [2020-01-16 19:03:25,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:25,586 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013140908] [2020-01-16 19:03:25,586 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:25,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:26,013 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 19:03:26,129 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-01-16 19:03:26,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:26,136 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013140908] [2020-01-16 19:03:26,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:26,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:26,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457811589] [2020-01-16 19:03:26,136 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:26,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:26,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:26,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:26,137 INFO L87 Difference]: Start difference. First operand 1560 states and 7015 transitions. Second operand 11 states. [2020-01-16 19:03:26,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:26,351 INFO L93 Difference]: Finished difference Result 2913 states and 11649 transitions. [2020-01-16 19:03:26,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:26,352 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:26,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:26,359 INFO L225 Difference]: With dead ends: 2913 [2020-01-16 19:03:26,359 INFO L226 Difference]: Without dead ends: 2898 [2020-01-16 19:03:26,359 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:26,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2898 states. [2020-01-16 19:03:26,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2898 to 1573. [2020-01-16 19:03:26,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:03:26,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7058 transitions. [2020-01-16 19:03:26,426 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7058 transitions. Word has length 28 [2020-01-16 19:03:26,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:26,426 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7058 transitions. [2020-01-16 19:03:26,426 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:26,426 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7058 transitions. [2020-01-16 19:03:26,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:26,428 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:26,428 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:26,428 INFO L426 AbstractCegarLoop]: === Iteration 298 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:26,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:26,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1149794316, now seen corresponding path program 290 times [2020-01-16 19:03:26,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:26,429 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507974076] [2020-01-16 19:03:26,429 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:26,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:26,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:26,953 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507974076] [2020-01-16 19:03:26,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:26,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:26,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852361366] [2020-01-16 19:03:26,953 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:26,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:26,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:26,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:26,954 INFO L87 Difference]: Start difference. First operand 1573 states and 7058 transitions. Second operand 11 states. [2020-01-16 19:03:27,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:27,161 INFO L93 Difference]: Finished difference Result 2914 states and 11646 transitions. [2020-01-16 19:03:27,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:27,161 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:27,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:27,168 INFO L225 Difference]: With dead ends: 2914 [2020-01-16 19:03:27,168 INFO L226 Difference]: Without dead ends: 2893 [2020-01-16 19:03:27,169 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:27,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2893 states. [2020-01-16 19:03:27,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2893 to 1568. [2020-01-16 19:03:27,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 19:03:27,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7045 transitions. [2020-01-16 19:03:27,236 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7045 transitions. Word has length 28 [2020-01-16 19:03:27,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:27,237 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7045 transitions. [2020-01-16 19:03:27,237 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:27,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7045 transitions. [2020-01-16 19:03:27,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:27,239 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:27,239 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:27,239 INFO L426 AbstractCegarLoop]: === Iteration 299 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:27,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:27,239 INFO L82 PathProgramCache]: Analyzing trace with hash -130137984, now seen corresponding path program 291 times [2020-01-16 19:03:27,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:27,240 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598769377] [2020-01-16 19:03:27,240 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:27,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:27,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:27,759 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598769377] [2020-01-16 19:03:27,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:27,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:27,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808111848] [2020-01-16 19:03:27,760 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:27,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:27,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:27,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:27,760 INFO L87 Difference]: Start difference. First operand 1568 states and 7045 transitions. Second operand 11 states. [2020-01-16 19:03:27,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:27,986 INFO L93 Difference]: Finished difference Result 2910 states and 11638 transitions. [2020-01-16 19:03:27,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:27,986 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:27,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:27,993 INFO L225 Difference]: With dead ends: 2910 [2020-01-16 19:03:27,993 INFO L226 Difference]: Without dead ends: 2895 [2020-01-16 19:03:27,993 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:28,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2895 states. [2020-01-16 19:03:28,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2895 to 1572. [2020-01-16 19:03:28,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 19:03:28,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7052 transitions. [2020-01-16 19:03:28,060 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7052 transitions. Word has length 28 [2020-01-16 19:03:28,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:28,060 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7052 transitions. [2020-01-16 19:03:28,060 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:28,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7052 transitions. [2020-01-16 19:03:28,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:28,063 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:28,063 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:28,063 INFO L426 AbstractCegarLoop]: === Iteration 300 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:28,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:28,063 INFO L82 PathProgramCache]: Analyzing trace with hash 43109708, now seen corresponding path program 292 times [2020-01-16 19:03:28,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:28,063 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485317306] [2020-01-16 19:03:28,063 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:28,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:28,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:28,587 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485317306] [2020-01-16 19:03:28,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:28,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:28,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945918188] [2020-01-16 19:03:28,587 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:28,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:28,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:28,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:28,588 INFO L87 Difference]: Start difference. First operand 1572 states and 7052 transitions. Second operand 11 states. [2020-01-16 19:03:28,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:28,793 INFO L93 Difference]: Finished difference Result 2909 states and 11632 transitions. [2020-01-16 19:03:28,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:28,794 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:28,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:28,801 INFO L225 Difference]: With dead ends: 2909 [2020-01-16 19:03:28,801 INFO L226 Difference]: Without dead ends: 2891 [2020-01-16 19:03:28,802 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:28,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2891 states. [2020-01-16 19:03:28,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2891 to 1568. [2020-01-16 19:03:28,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 19:03:28,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7041 transitions. [2020-01-16 19:03:28,874 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7041 transitions. Word has length 28 [2020-01-16 19:03:28,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:28,875 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7041 transitions. [2020-01-16 19:03:28,875 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:28,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7041 transitions. [2020-01-16 19:03:28,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:28,877 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:28,877 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:28,877 INFO L426 AbstractCegarLoop]: === Iteration 301 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:28,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:28,877 INFO L82 PathProgramCache]: Analyzing trace with hash -2069461824, now seen corresponding path program 293 times [2020-01-16 19:03:28,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:28,878 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470575948] [2020-01-16 19:03:28,878 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:28,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:29,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:29,410 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470575948] [2020-01-16 19:03:29,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:29,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:29,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360778807] [2020-01-16 19:03:29,410 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:29,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:29,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:29,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:29,411 INFO L87 Difference]: Start difference. First operand 1568 states and 7041 transitions. Second operand 11 states. [2020-01-16 19:03:29,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:29,676 INFO L93 Difference]: Finished difference Result 2912 states and 11638 transitions. [2020-01-16 19:03:29,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:29,676 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:29,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:29,683 INFO L225 Difference]: With dead ends: 2912 [2020-01-16 19:03:29,683 INFO L226 Difference]: Without dead ends: 2896 [2020-01-16 19:03:29,683 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:29,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2896 states. [2020-01-16 19:03:29,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2896 to 1572. [2020-01-16 19:03:29,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 19:03:29,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7048 transitions. [2020-01-16 19:03:29,751 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7048 transitions. Word has length 28 [2020-01-16 19:03:29,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:29,751 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7048 transitions. [2020-01-16 19:03:29,751 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:29,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7048 transitions. [2020-01-16 19:03:29,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:29,753 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:29,753 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:29,753 INFO L426 AbstractCegarLoop]: === Iteration 302 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:29,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:29,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1654050666, now seen corresponding path program 294 times [2020-01-16 19:03:29,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:29,754 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230384694] [2020-01-16 19:03:29,754 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:29,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:30,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:30,271 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230384694] [2020-01-16 19:03:30,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:30,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:30,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132968513] [2020-01-16 19:03:30,271 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:30,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:30,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:30,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:30,272 INFO L87 Difference]: Start difference. First operand 1572 states and 7048 transitions. Second operand 11 states. [2020-01-16 19:03:30,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:30,507 INFO L93 Difference]: Finished difference Result 2910 states and 11630 transitions. [2020-01-16 19:03:30,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:30,507 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:30,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:30,515 INFO L225 Difference]: With dead ends: 2910 [2020-01-16 19:03:30,515 INFO L226 Difference]: Without dead ends: 2888 [2020-01-16 19:03:30,515 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:30,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2888 states. [2020-01-16 19:03:30,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2888 to 1564. [2020-01-16 19:03:30,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1564 states. [2020-01-16 19:03:30,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 7030 transitions. [2020-01-16 19:03:30,582 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 7030 transitions. Word has length 28 [2020-01-16 19:03:30,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:30,582 INFO L478 AbstractCegarLoop]: Abstraction has 1564 states and 7030 transitions. [2020-01-16 19:03:30,582 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:30,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 7030 transitions. [2020-01-16 19:03:30,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:30,584 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:30,584 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:30,585 INFO L426 AbstractCegarLoop]: === Iteration 303 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:30,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:30,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1499183406, now seen corresponding path program 295 times [2020-01-16 19:03:30,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:30,585 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651473978] [2020-01-16 19:03:30,585 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:30,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:31,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:31,109 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651473978] [2020-01-16 19:03:31,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:31,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:31,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479485864] [2020-01-16 19:03:31,110 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:31,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:31,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:31,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:31,110 INFO L87 Difference]: Start difference. First operand 1564 states and 7030 transitions. Second operand 11 states. [2020-01-16 19:03:31,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:31,321 INFO L93 Difference]: Finished difference Result 2920 states and 11664 transitions. [2020-01-16 19:03:31,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:31,321 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:31,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:31,328 INFO L225 Difference]: With dead ends: 2920 [2020-01-16 19:03:31,328 INFO L226 Difference]: Without dead ends: 2905 [2020-01-16 19:03:31,328 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:31,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2905 states. [2020-01-16 19:03:31,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2905 to 1574. [2020-01-16 19:03:31,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 19:03:31,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7058 transitions. [2020-01-16 19:03:31,396 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7058 transitions. Word has length 28 [2020-01-16 19:03:31,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:31,396 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7058 transitions. [2020-01-16 19:03:31,396 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:31,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7058 transitions. [2020-01-16 19:03:31,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:31,399 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:31,399 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:31,399 INFO L426 AbstractCegarLoop]: === Iteration 304 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:31,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:31,399 INFO L82 PathProgramCache]: Analyzing trace with hash -2051081392, now seen corresponding path program 296 times [2020-01-16 19:03:31,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:31,399 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30036172] [2020-01-16 19:03:31,399 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:31,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:31,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:31,940 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30036172] [2020-01-16 19:03:31,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:31,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:31,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900913575] [2020-01-16 19:03:31,941 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:31,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:31,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:31,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:31,941 INFO L87 Difference]: Start difference. First operand 1574 states and 7058 transitions. Second operand 11 states. [2020-01-16 19:03:32,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:32,135 INFO L93 Difference]: Finished difference Result 2921 states and 11661 transitions. [2020-01-16 19:03:32,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:32,135 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:32,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:32,142 INFO L225 Difference]: With dead ends: 2921 [2020-01-16 19:03:32,142 INFO L226 Difference]: Without dead ends: 2900 [2020-01-16 19:03:32,142 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:32,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2900 states. [2020-01-16 19:03:32,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2900 to 1569. [2020-01-16 19:03:32,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 19:03:32,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7044 transitions. [2020-01-16 19:03:32,210 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7044 transitions. Word has length 28 [2020-01-16 19:03:32,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:32,210 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7044 transitions. [2020-01-16 19:03:32,210 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:32,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7044 transitions. [2020-01-16 19:03:32,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:32,212 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:32,213 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:32,213 INFO L426 AbstractCegarLoop]: === Iteration 305 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:32,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:32,213 INFO L82 PathProgramCache]: Analyzing trace with hash -109131776, now seen corresponding path program 297 times [2020-01-16 19:03:32,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:32,213 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915330480] [2020-01-16 19:03:32,213 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:32,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:32,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:32,738 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915330480] [2020-01-16 19:03:32,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:32,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:32,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488191743] [2020-01-16 19:03:32,739 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:32,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:32,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:32,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:32,739 INFO L87 Difference]: Start difference. First operand 1569 states and 7044 transitions. Second operand 11 states. [2020-01-16 19:03:33,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:33,008 INFO L93 Difference]: Finished difference Result 2921 states and 11661 transitions. [2020-01-16 19:03:33,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:33,009 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:33,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:33,016 INFO L225 Difference]: With dead ends: 2921 [2020-01-16 19:03:33,017 INFO L226 Difference]: Without dead ends: 2906 [2020-01-16 19:03:33,017 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:33,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2906 states. [2020-01-16 19:03:33,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2906 to 1574. [2020-01-16 19:03:33,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 19:03:33,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7053 transitions. [2020-01-16 19:03:33,083 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7053 transitions. Word has length 28 [2020-01-16 19:03:33,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:33,083 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7053 transitions. [2020-01-16 19:03:33,083 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:33,083 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7053 transitions. [2020-01-16 19:03:33,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:33,085 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:33,085 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:33,085 INFO L426 AbstractCegarLoop]: === Iteration 306 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:33,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:33,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1553520912, now seen corresponding path program 298 times [2020-01-16 19:03:33,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:33,086 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33621999] [2020-01-16 19:03:33,086 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:33,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:33,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:33,611 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33621999] [2020-01-16 19:03:33,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:33,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:33,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421996588] [2020-01-16 19:03:33,611 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:33,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:33,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:33,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:33,612 INFO L87 Difference]: Start difference. First operand 1574 states and 7053 transitions. Second operand 11 states. [2020-01-16 19:03:33,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:33,872 INFO L93 Difference]: Finished difference Result 2923 states and 11660 transitions. [2020-01-16 19:03:33,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:33,872 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:33,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:33,880 INFO L225 Difference]: With dead ends: 2923 [2020-01-16 19:03:33,881 INFO L226 Difference]: Without dead ends: 2901 [2020-01-16 19:03:33,881 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:33,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2901 states. [2020-01-16 19:03:33,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2901 to 1569. [2020-01-16 19:03:33,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 19:03:33,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7039 transitions. [2020-01-16 19:03:33,950 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7039 transitions. Word has length 28 [2020-01-16 19:03:33,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:33,951 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7039 transitions. [2020-01-16 19:03:33,951 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:33,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7039 transitions. [2020-01-16 19:03:33,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:33,953 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:33,953 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:33,954 INFO L426 AbstractCegarLoop]: === Iteration 307 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:33,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:33,954 INFO L82 PathProgramCache]: Analyzing trace with hash -2048455616, now seen corresponding path program 299 times [2020-01-16 19:03:33,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:33,954 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138358060] [2020-01-16 19:03:33,954 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:33,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:34,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:34,478 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138358060] [2020-01-16 19:03:34,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:34,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:34,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432123768] [2020-01-16 19:03:34,478 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:34,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:34,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:34,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:34,479 INFO L87 Difference]: Start difference. First operand 1569 states and 7039 transitions. Second operand 11 states. [2020-01-16 19:03:34,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:34,738 INFO L93 Difference]: Finished difference Result 2924 states and 11663 transitions. [2020-01-16 19:03:34,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:34,738 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:34,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:34,745 INFO L225 Difference]: With dead ends: 2924 [2020-01-16 19:03:34,746 INFO L226 Difference]: Without dead ends: 2908 [2020-01-16 19:03:34,746 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:34,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2020-01-16 19:03:34,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 1575. [2020-01-16 19:03:34,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:03:34,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7050 transitions. [2020-01-16 19:03:34,813 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7050 transitions. Word has length 28 [2020-01-16 19:03:34,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:34,813 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7050 transitions. [2020-01-16 19:03:34,813 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:34,813 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7050 transitions. [2020-01-16 19:03:34,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:34,815 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:34,815 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:34,816 INFO L426 AbstractCegarLoop]: === Iteration 308 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:34,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:34,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1130505426, now seen corresponding path program 300 times [2020-01-16 19:03:34,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:34,816 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938637386] [2020-01-16 19:03:34,816 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:34,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:35,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:35,347 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938637386] [2020-01-16 19:03:35,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:35,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:35,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134410574] [2020-01-16 19:03:35,348 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:35,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:35,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:35,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:35,348 INFO L87 Difference]: Start difference. First operand 1575 states and 7050 transitions. Second operand 11 states. [2020-01-16 19:03:35,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:35,617 INFO L93 Difference]: Finished difference Result 2925 states and 11659 transitions. [2020-01-16 19:03:35,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:35,618 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:35,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:35,625 INFO L225 Difference]: With dead ends: 2925 [2020-01-16 19:03:35,625 INFO L226 Difference]: Without dead ends: 2897 [2020-01-16 19:03:35,625 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:35,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2897 states. [2020-01-16 19:03:35,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2897 to 1564. [2020-01-16 19:03:35,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1564 states. [2020-01-16 19:03:35,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 7026 transitions. [2020-01-16 19:03:35,691 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 7026 transitions. Word has length 28 [2020-01-16 19:03:35,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:35,691 INFO L478 AbstractCegarLoop]: Abstraction has 1564 states and 7026 transitions. [2020-01-16 19:03:35,691 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:35,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 7026 transitions. [2020-01-16 19:03:35,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:35,693 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:35,694 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:35,694 INFO L426 AbstractCegarLoop]: === Iteration 309 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:35,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:35,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1551698926, now seen corresponding path program 301 times [2020-01-16 19:03:35,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:35,694 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332002051] [2020-01-16 19:03:35,694 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:35,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:36,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:36,231 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332002051] [2020-01-16 19:03:36,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:36,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:36,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608048792] [2020-01-16 19:03:36,231 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:36,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:36,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:36,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:36,232 INFO L87 Difference]: Start difference. First operand 1564 states and 7026 transitions. Second operand 11 states. [2020-01-16 19:03:36,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:36,433 INFO L93 Difference]: Finished difference Result 2911 states and 11636 transitions. [2020-01-16 19:03:36,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:36,434 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:36,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:36,441 INFO L225 Difference]: With dead ends: 2911 [2020-01-16 19:03:36,442 INFO L226 Difference]: Without dead ends: 2896 [2020-01-16 19:03:36,442 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:36,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2896 states. [2020-01-16 19:03:36,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2896 to 1572. [2020-01-16 19:03:36,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 19:03:36,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7048 transitions. [2020-01-16 19:03:36,529 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7048 transitions. Word has length 28 [2020-01-16 19:03:36,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:36,529 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7048 transitions. [2020-01-16 19:03:36,529 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:36,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7048 transitions. [2020-01-16 19:03:36,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:36,532 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:36,532 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:36,532 INFO L426 AbstractCegarLoop]: === Iteration 310 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:36,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:36,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1724946618, now seen corresponding path program 302 times [2020-01-16 19:03:36,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:36,532 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187705817] [2020-01-16 19:03:36,533 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:36,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:37,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:37,062 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187705817] [2020-01-16 19:03:37,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:37,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:37,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906027378] [2020-01-16 19:03:37,062 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:37,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:37,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:37,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:37,063 INFO L87 Difference]: Start difference. First operand 1572 states and 7048 transitions. Second operand 11 states. [2020-01-16 19:03:37,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:37,282 INFO L93 Difference]: Finished difference Result 2910 states and 11630 transitions. [2020-01-16 19:03:37,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:37,282 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:37,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:37,290 INFO L225 Difference]: With dead ends: 2910 [2020-01-16 19:03:37,290 INFO L226 Difference]: Without dead ends: 2892 [2020-01-16 19:03:37,290 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:37,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2892 states. [2020-01-16 19:03:37,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2892 to 1568. [2020-01-16 19:03:37,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 19:03:37,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7037 transitions. [2020-01-16 19:03:37,356 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7037 transitions. Word has length 28 [2020-01-16 19:03:37,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:37,356 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7037 transitions. [2020-01-16 19:03:37,356 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:37,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7037 transitions. [2020-01-16 19:03:37,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:37,358 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:37,358 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:37,359 INFO L426 AbstractCegarLoop]: === Iteration 311 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:37,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:37,359 INFO L82 PathProgramCache]: Analyzing trace with hash 478613546, now seen corresponding path program 303 times [2020-01-16 19:03:37,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:37,359 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880206975] [2020-01-16 19:03:37,359 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:37,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:37,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:37,872 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880206975] [2020-01-16 19:03:37,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:37,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:37,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063838058] [2020-01-16 19:03:37,873 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:37,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:37,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:37,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:37,873 INFO L87 Difference]: Start difference. First operand 1568 states and 7037 transitions. Second operand 11 states. [2020-01-16 19:03:38,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:38,071 INFO L93 Difference]: Finished difference Result 2915 states and 11641 transitions. [2020-01-16 19:03:38,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:38,071 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:38,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:38,079 INFO L225 Difference]: With dead ends: 2915 [2020-01-16 19:03:38,079 INFO L226 Difference]: Without dead ends: 2900 [2020-01-16 19:03:38,079 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:38,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2900 states. [2020-01-16 19:03:38,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2900 to 1573. [2020-01-16 19:03:38,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:03:38,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7046 transitions. [2020-01-16 19:03:38,147 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7046 transitions. Word has length 28 [2020-01-16 19:03:38,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:38,147 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7046 transitions. [2020-01-16 19:03:38,147 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:38,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7046 transitions. [2020-01-16 19:03:38,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:38,150 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:38,150 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:38,150 INFO L426 AbstractCegarLoop]: === Iteration 312 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:38,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:38,150 INFO L82 PathProgramCache]: Analyzing trace with hash 2141266234, now seen corresponding path program 304 times [2020-01-16 19:03:38,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:38,150 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772674266] [2020-01-16 19:03:38,150 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:38,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:38,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:38,668 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772674266] [2020-01-16 19:03:38,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:38,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:38,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645888390] [2020-01-16 19:03:38,668 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:38,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:38,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:38,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:38,669 INFO L87 Difference]: Start difference. First operand 1573 states and 7046 transitions. Second operand 11 states. [2020-01-16 19:03:38,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:38,837 INFO L93 Difference]: Finished difference Result 2917 states and 11640 transitions. [2020-01-16 19:03:38,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:38,837 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:38,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:38,845 INFO L225 Difference]: With dead ends: 2917 [2020-01-16 19:03:38,845 INFO L226 Difference]: Without dead ends: 2895 [2020-01-16 19:03:38,846 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:38,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2895 states. [2020-01-16 19:03:38,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2895 to 1568. [2020-01-16 19:03:38,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 19:03:38,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7033 transitions. [2020-01-16 19:03:38,911 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7033 transitions. Word has length 28 [2020-01-16 19:03:38,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:38,911 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7033 transitions. [2020-01-16 19:03:38,911 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:38,911 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7033 transitions. [2020-01-16 19:03:38,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:38,913 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:38,914 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:38,914 INFO L426 AbstractCegarLoop]: === Iteration 313 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:38,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:38,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1727572394, now seen corresponding path program 305 times [2020-01-16 19:03:38,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:38,914 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649078309] [2020-01-16 19:03:38,914 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:38,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:39,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:39,437 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649078309] [2020-01-16 19:03:39,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:39,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:39,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376922334] [2020-01-16 19:03:39,437 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:39,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:39,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:39,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:39,437 INFO L87 Difference]: Start difference. First operand 1568 states and 7033 transitions. Second operand 11 states. [2020-01-16 19:03:39,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:39,606 INFO L93 Difference]: Finished difference Result 2912 states and 11630 transitions. [2020-01-16 19:03:39,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:39,606 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:39,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:39,613 INFO L225 Difference]: With dead ends: 2912 [2020-01-16 19:03:39,613 INFO L226 Difference]: Without dead ends: 2898 [2020-01-16 19:03:39,613 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:39,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2898 states. [2020-01-16 19:03:39,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2898 to 1572. [2020-01-16 19:03:39,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 19:03:39,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7040 transitions. [2020-01-16 19:03:39,680 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7040 transitions. Word has length 28 [2020-01-16 19:03:39,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:39,681 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7040 transitions. [2020-01-16 19:03:39,681 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:39,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7040 transitions. [2020-01-16 19:03:39,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:39,683 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:39,683 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:39,683 INFO L426 AbstractCegarLoop]: === Iteration 314 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:39,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:39,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1077989906, now seen corresponding path program 306 times [2020-01-16 19:03:39,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:39,684 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939392511] [2020-01-16 19:03:39,684 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:39,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:40,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:40,202 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939392511] [2020-01-16 19:03:40,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:40,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:40,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731307579] [2020-01-16 19:03:40,203 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:40,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:40,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:40,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:40,203 INFO L87 Difference]: Start difference. First operand 1572 states and 7040 transitions. Second operand 11 states. [2020-01-16 19:03:40,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:40,405 INFO L93 Difference]: Finished difference Result 2915 states and 11632 transitions. [2020-01-16 19:03:40,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:40,405 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:40,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:40,413 INFO L225 Difference]: With dead ends: 2915 [2020-01-16 19:03:40,413 INFO L226 Difference]: Without dead ends: 2890 [2020-01-16 19:03:40,413 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:40,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2890 states. [2020-01-16 19:03:40,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2890 to 1564. [2020-01-16 19:03:40,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1564 states. [2020-01-16 19:03:40,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 7022 transitions. [2020-01-16 19:03:40,479 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 7022 transitions. Word has length 28 [2020-01-16 19:03:40,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:40,479 INFO L478 AbstractCegarLoop]: Abstraction has 1564 states and 7022 transitions. [2020-01-16 19:03:40,479 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:40,479 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 7022 transitions. [2020-01-16 19:03:40,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:40,481 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:40,481 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:40,481 INFO L426 AbstractCegarLoop]: === Iteration 315 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:40,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:40,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1988062768, now seen corresponding path program 307 times [2020-01-16 19:03:40,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:40,482 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978376160] [2020-01-16 19:03:40,482 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:40,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:41,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:41,008 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978376160] [2020-01-16 19:03:41,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:41,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:41,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63230154] [2020-01-16 19:03:41,008 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:41,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:41,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:41,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:41,009 INFO L87 Difference]: Start difference. First operand 1564 states and 7022 transitions. Second operand 11 states. [2020-01-16 19:03:41,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:41,176 INFO L93 Difference]: Finished difference Result 2915 states and 11641 transitions. [2020-01-16 19:03:41,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:41,177 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:41,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:41,184 INFO L225 Difference]: With dead ends: 2915 [2020-01-16 19:03:41,184 INFO L226 Difference]: Without dead ends: 2899 [2020-01-16 19:03:41,185 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:41,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-01-16 19:03:41,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1572. [2020-01-16 19:03:41,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 19:03:41,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7044 transitions. [2020-01-16 19:03:41,252 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7044 transitions. Word has length 28 [2020-01-16 19:03:41,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:41,252 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7044 transitions. [2020-01-16 19:03:41,253 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:41,253 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7044 transitions. [2020-01-16 19:03:41,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:41,255 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:41,255 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:41,255 INFO L426 AbstractCegarLoop]: === Iteration 316 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:41,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:41,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1735449722, now seen corresponding path program 308 times [2020-01-16 19:03:41,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:41,255 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219821856] [2020-01-16 19:03:41,256 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:41,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:41,676 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 19:03:41,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:41,796 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219821856] [2020-01-16 19:03:41,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:41,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:41,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977221291] [2020-01-16 19:03:41,796 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:41,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:41,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:41,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:41,797 INFO L87 Difference]: Start difference. First operand 1572 states and 7044 transitions. Second operand 11 states. [2020-01-16 19:03:41,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:41,994 INFO L93 Difference]: Finished difference Result 2913 states and 11633 transitions. [2020-01-16 19:03:41,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:41,994 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:41,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:42,002 INFO L225 Difference]: With dead ends: 2913 [2020-01-16 19:03:42,002 INFO L226 Difference]: Without dead ends: 2895 [2020-01-16 19:03:42,002 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:42,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2895 states. [2020-01-16 19:03:42,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2895 to 1568. [2020-01-16 19:03:42,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 19:03:42,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7033 transitions. [2020-01-16 19:03:42,070 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7033 transitions. Word has length 28 [2020-01-16 19:03:42,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:42,070 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7033 transitions. [2020-01-16 19:03:42,070 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:42,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7033 transitions. [2020-01-16 19:03:42,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:42,072 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:42,073 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:42,073 INFO L426 AbstractCegarLoop]: === Iteration 317 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:42,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:42,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1233819148, now seen corresponding path program 309 times [2020-01-16 19:03:42,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:42,073 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124956220] [2020-01-16 19:03:42,073 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:42,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:42,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:42,605 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124956220] [2020-01-16 19:03:42,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:42,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:42,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660056628] [2020-01-16 19:03:42,606 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:42,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:42,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:42,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:42,606 INFO L87 Difference]: Start difference. First operand 1568 states and 7033 transitions. Second operand 11 states. [2020-01-16 19:03:42,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:42,775 INFO L93 Difference]: Finished difference Result 2920 states and 11649 transitions. [2020-01-16 19:03:42,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:42,775 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:42,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:42,783 INFO L225 Difference]: With dead ends: 2920 [2020-01-16 19:03:42,783 INFO L226 Difference]: Without dead ends: 2904 [2020-01-16 19:03:42,783 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:42,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2904 states. [2020-01-16 19:03:42,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2904 to 1574. [2020-01-16 19:03:42,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 19:03:42,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7044 transitions. [2020-01-16 19:03:42,850 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7044 transitions. Word has length 28 [2020-01-16 19:03:42,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:42,851 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7044 transitions. [2020-01-16 19:03:42,851 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:42,851 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7044 transitions. [2020-01-16 19:03:42,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:42,853 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:42,853 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:42,853 INFO L426 AbstractCegarLoop]: === Iteration 318 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:42,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:42,853 INFO L82 PathProgramCache]: Analyzing trace with hash -2143197958, now seen corresponding path program 310 times [2020-01-16 19:03:42,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:42,854 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738218723] [2020-01-16 19:03:42,854 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:42,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:43,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:43,391 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738218723] [2020-01-16 19:03:43,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:43,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:43,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551628880] [2020-01-16 19:03:43,391 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:43,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:43,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:43,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:43,391 INFO L87 Difference]: Start difference. First operand 1574 states and 7044 transitions. Second operand 11 states. [2020-01-16 19:03:43,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:43,598 INFO L93 Difference]: Finished difference Result 2921 states and 11645 transitions. [2020-01-16 19:03:43,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:43,599 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:43,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:43,607 INFO L225 Difference]: With dead ends: 2921 [2020-01-16 19:03:43,607 INFO L226 Difference]: Without dead ends: 2898 [2020-01-16 19:03:43,607 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:43,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2898 states. [2020-01-16 19:03:43,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2898 to 1568. [2020-01-16 19:03:43,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 19:03:43,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7029 transitions. [2020-01-16 19:03:43,678 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7029 transitions. Word has length 28 [2020-01-16 19:03:43,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:43,678 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7029 transitions. [2020-01-16 19:03:43,678 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:43,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7029 transitions. [2020-01-16 19:03:43,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:43,681 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:43,681 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:43,681 INFO L426 AbstractCegarLoop]: === Iteration 319 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:43,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:43,681 INFO L82 PathProgramCache]: Analyzing trace with hash 127134540, now seen corresponding path program 311 times [2020-01-16 19:03:43,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:43,681 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164449688] [2020-01-16 19:03:43,681 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:43,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:44,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:44,218 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164449688] [2020-01-16 19:03:44,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:44,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:44,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073138627] [2020-01-16 19:03:44,219 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:44,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:44,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:44,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:44,219 INFO L87 Difference]: Start difference. First operand 1568 states and 7029 transitions. Second operand 11 states. [2020-01-16 19:03:44,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:44,389 INFO L93 Difference]: Finished difference Result 2914 states and 11631 transitions. [2020-01-16 19:03:44,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:44,389 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:44,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:44,396 INFO L225 Difference]: With dead ends: 2914 [2020-01-16 19:03:44,397 INFO L226 Difference]: Without dead ends: 2900 [2020-01-16 19:03:44,397 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:44,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2900 states. [2020-01-16 19:03:44,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2900 to 1572. [2020-01-16 19:03:44,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 19:03:44,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7036 transitions. [2020-01-16 19:03:44,463 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7036 transitions. Word has length 28 [2020-01-16 19:03:44,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:44,463 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7036 transitions. [2020-01-16 19:03:44,463 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:44,463 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7036 transitions. [2020-01-16 19:03:44,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:44,465 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:44,465 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:44,465 INFO L426 AbstractCegarLoop]: === Iteration 320 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:44,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:44,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1616539536, now seen corresponding path program 312 times [2020-01-16 19:03:44,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:44,466 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068617458] [2020-01-16 19:03:44,466 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:44,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:44,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:44,992 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068617458] [2020-01-16 19:03:44,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:44,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:44,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873023780] [2020-01-16 19:03:44,993 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:44,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:44,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:44,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:44,993 INFO L87 Difference]: Start difference. First operand 1572 states and 7036 transitions. Second operand 11 states. [2020-01-16 19:03:45,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:45,161 INFO L93 Difference]: Finished difference Result 2917 states and 11633 transitions. [2020-01-16 19:03:45,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:45,161 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:45,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:45,169 INFO L225 Difference]: With dead ends: 2917 [2020-01-16 19:03:45,169 INFO L226 Difference]: Without dead ends: 2888 [2020-01-16 19:03:45,169 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:45,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2888 states. [2020-01-16 19:03:45,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2888 to 1560. [2020-01-16 19:03:45,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1560 states. [2020-01-16 19:03:45,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1560 states to 1560 states and 7011 transitions. [2020-01-16 19:03:45,235 INFO L78 Accepts]: Start accepts. Automaton has 1560 states and 7011 transitions. Word has length 28 [2020-01-16 19:03:45,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:45,235 INFO L478 AbstractCegarLoop]: Abstraction has 1560 states and 7011 transitions. [2020-01-16 19:03:45,235 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:45,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1560 states and 7011 transitions. [2020-01-16 19:03:45,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:45,237 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:45,238 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:45,238 INFO L426 AbstractCegarLoop]: === Iteration 321 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:45,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:45,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1953338296, now seen corresponding path program 313 times [2020-01-16 19:03:45,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:45,238 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962068713] [2020-01-16 19:03:45,238 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:45,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:45,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:45,754 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962068713] [2020-01-16 19:03:45,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:45,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:45,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803307115] [2020-01-16 19:03:45,755 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:45,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:45,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:45,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:45,755 INFO L87 Difference]: Start difference. First operand 1560 states and 7011 transitions. Second operand 11 states. [2020-01-16 19:03:45,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:45,920 INFO L93 Difference]: Finished difference Result 2937 states and 11697 transitions. [2020-01-16 19:03:45,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:45,921 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:45,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:45,928 INFO L225 Difference]: With dead ends: 2937 [2020-01-16 19:03:45,928 INFO L226 Difference]: Without dead ends: 2922 [2020-01-16 19:03:45,928 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:45,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2922 states. [2020-01-16 19:03:45,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2922 to 1576. [2020-01-16 19:03:45,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 19:03:45,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7063 transitions. [2020-01-16 19:03:45,994 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7063 transitions. Word has length 28 [2020-01-16 19:03:45,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:45,995 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7063 transitions. [2020-01-16 19:03:45,995 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:45,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7063 transitions. [2020-01-16 19:03:45,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:45,998 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:45,998 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:45,998 INFO L426 AbstractCegarLoop]: === Iteration 322 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:45,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:45,998 INFO L82 PathProgramCache]: Analyzing trace with hash -463933300, now seen corresponding path program 314 times [2020-01-16 19:03:45,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:45,998 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385873032] [2020-01-16 19:03:45,998 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:46,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:46,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:46,533 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385873032] [2020-01-16 19:03:46,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:46,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:46,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437033210] [2020-01-16 19:03:46,534 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:46,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:46,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:46,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:46,534 INFO L87 Difference]: Start difference. First operand 1576 states and 7063 transitions. Second operand 11 states. [2020-01-16 19:03:46,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:46,683 INFO L93 Difference]: Finished difference Result 2942 states and 11701 transitions. [2020-01-16 19:03:46,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:46,683 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:46,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:46,690 INFO L225 Difference]: With dead ends: 2942 [2020-01-16 19:03:46,690 INFO L226 Difference]: Without dead ends: 2916 [2020-01-16 19:03:46,690 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:46,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2020-01-16 19:03:46,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 1570. [2020-01-16 19:03:46,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 19:03:46,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7047 transitions. [2020-01-16 19:03:46,783 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7047 transitions. Word has length 28 [2020-01-16 19:03:46,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:46,783 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7047 transitions. [2020-01-16 19:03:46,783 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:46,783 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7047 transitions. [2020-01-16 19:03:46,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:46,785 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:46,785 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:46,785 INFO L426 AbstractCegarLoop]: === Iteration 323 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:46,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:46,786 INFO L82 PathProgramCache]: Analyzing trace with hash 195458240, now seen corresponding path program 315 times [2020-01-16 19:03:46,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:46,786 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468742524] [2020-01-16 19:03:46,786 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:46,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:47,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:47,302 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468742524] [2020-01-16 19:03:47,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:47,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:47,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581642989] [2020-01-16 19:03:47,302 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:47,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:47,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:47,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:47,303 INFO L87 Difference]: Start difference. First operand 1570 states and 7047 transitions. Second operand 11 states. [2020-01-16 19:03:47,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:47,495 INFO L93 Difference]: Finished difference Result 2929 states and 11676 transitions. [2020-01-16 19:03:47,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:47,496 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:47,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:47,503 INFO L225 Difference]: With dead ends: 2929 [2020-01-16 19:03:47,504 INFO L226 Difference]: Without dead ends: 2914 [2020-01-16 19:03:47,504 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:47,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2914 states. [2020-01-16 19:03:47,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2914 to 1574. [2020-01-16 19:03:47,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 19:03:47,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7054 transitions. [2020-01-16 19:03:47,572 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7054 transitions. Word has length 28 [2020-01-16 19:03:47,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:47,572 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7054 transitions. [2020-01-16 19:03:47,572 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:47,572 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7054 transitions. [2020-01-16 19:03:47,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:47,574 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:47,574 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:47,574 INFO L426 AbstractCegarLoop]: === Iteration 324 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:47,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:47,575 INFO L82 PathProgramCache]: Analyzing trace with hash 368705932, now seen corresponding path program 316 times [2020-01-16 19:03:47,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:47,575 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870220041] [2020-01-16 19:03:47,575 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:47,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:48,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:48,095 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870220041] [2020-01-16 19:03:48,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:48,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:48,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080933243] [2020-01-16 19:03:48,095 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:48,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:48,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:48,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:48,096 INFO L87 Difference]: Start difference. First operand 1574 states and 7054 transitions. Second operand 11 states. [2020-01-16 19:03:48,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:48,269 INFO L93 Difference]: Finished difference Result 2928 states and 11670 transitions. [2020-01-16 19:03:48,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:48,270 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:48,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:48,277 INFO L225 Difference]: With dead ends: 2928 [2020-01-16 19:03:48,278 INFO L226 Difference]: Without dead ends: 2910 [2020-01-16 19:03:48,278 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:48,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2910 states. [2020-01-16 19:03:48,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2910 to 1570. [2020-01-16 19:03:48,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 19:03:48,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7043 transitions. [2020-01-16 19:03:48,344 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7043 transitions. Word has length 28 [2020-01-16 19:03:48,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:48,344 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7043 transitions. [2020-01-16 19:03:48,344 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:48,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7043 transitions. [2020-01-16 19:03:48,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:48,346 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:48,347 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:48,347 INFO L426 AbstractCegarLoop]: === Iteration 325 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:48,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:48,347 INFO L82 PathProgramCache]: Analyzing trace with hash 611777856, now seen corresponding path program 317 times [2020-01-16 19:03:48,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:48,347 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243719605] [2020-01-16 19:03:48,347 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:48,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:48,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:48,857 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243719605] [2020-01-16 19:03:48,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:48,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:48,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230778713] [2020-01-16 19:03:48,858 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:48,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:48,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:48,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:48,858 INFO L87 Difference]: Start difference. First operand 1570 states and 7043 transitions. Second operand 11 states. [2020-01-16 19:03:48,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:48,992 INFO L93 Difference]: Finished difference Result 2940 states and 11692 transitions. [2020-01-16 19:03:48,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:48,992 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:48,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:48,999 INFO L225 Difference]: With dead ends: 2940 [2020-01-16 19:03:49,000 INFO L226 Difference]: Without dead ends: 2920 [2020-01-16 19:03:49,000 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:49,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2920 states. [2020-01-16 19:03:49,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2920 to 1575. [2020-01-16 19:03:49,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:03:49,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7051 transitions. [2020-01-16 19:03:49,067 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7051 transitions. Word has length 28 [2020-01-16 19:03:49,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:49,067 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7051 transitions. [2020-01-16 19:03:49,067 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:49,068 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7051 transitions. [2020-01-16 19:03:49,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:49,070 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:49,070 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:49,070 INFO L426 AbstractCegarLoop]: === Iteration 326 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:49,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:49,070 INFO L82 PathProgramCache]: Analyzing trace with hash -704379448, now seen corresponding path program 318 times [2020-01-16 19:03:49,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:49,070 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564019985] [2020-01-16 19:03:49,070 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:49,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:49,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:49,577 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564019985] [2020-01-16 19:03:49,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:49,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:49,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40724342] [2020-01-16 19:03:49,577 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:49,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:49,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:49,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:49,578 INFO L87 Difference]: Start difference. First operand 1575 states and 7051 transitions. Second operand 11 states. [2020-01-16 19:03:49,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:49,750 INFO L93 Difference]: Finished difference Result 2934 states and 11676 transitions. [2020-01-16 19:03:49,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:49,750 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:49,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:49,758 INFO L225 Difference]: With dead ends: 2934 [2020-01-16 19:03:49,758 INFO L226 Difference]: Without dead ends: 2910 [2020-01-16 19:03:49,758 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:49,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2910 states. [2020-01-16 19:03:49,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2910 to 1565. [2020-01-16 19:03:49,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 19:03:49,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7029 transitions. [2020-01-16 19:03:49,824 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7029 transitions. Word has length 28 [2020-01-16 19:03:49,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:49,824 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7029 transitions. [2020-01-16 19:03:49,824 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:49,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7029 transitions. [2020-01-16 19:03:49,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:49,827 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:49,827 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:49,827 INFO L426 AbstractCegarLoop]: === Iteration 327 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:49,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:49,827 INFO L82 PathProgramCache]: Analyzing trace with hash -859246708, now seen corresponding path program 319 times [2020-01-16 19:03:49,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:49,827 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547259610] [2020-01-16 19:03:49,827 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:49,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:50,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:50,331 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547259610] [2020-01-16 19:03:50,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:50,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:50,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913411971] [2020-01-16 19:03:50,332 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:50,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:50,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:50,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:50,332 INFO L87 Difference]: Start difference. First operand 1565 states and 7029 transitions. Second operand 11 states. [2020-01-16 19:03:50,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:50,527 INFO L93 Difference]: Finished difference Result 2945 states and 11714 transitions. [2020-01-16 19:03:50,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:50,528 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:50,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:50,535 INFO L225 Difference]: With dead ends: 2945 [2020-01-16 19:03:50,535 INFO L226 Difference]: Without dead ends: 2930 [2020-01-16 19:03:50,536 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:50,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2020-01-16 19:03:50,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1577. [2020-01-16 19:03:50,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 19:03:50,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7062 transitions. [2020-01-16 19:03:50,603 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7062 transitions. Word has length 28 [2020-01-16 19:03:50,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:50,603 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7062 transitions. [2020-01-16 19:03:50,603 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:50,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7062 transitions. [2020-01-16 19:03:50,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:50,605 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:50,606 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:50,606 INFO L426 AbstractCegarLoop]: === Iteration 328 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:50,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:50,606 INFO L82 PathProgramCache]: Analyzing trace with hash 630158288, now seen corresponding path program 320 times [2020-01-16 19:03:50,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:50,606 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216447252] [2020-01-16 19:03:50,606 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:50,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:51,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:51,152 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216447252] [2020-01-16 19:03:51,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:51,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:51,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762458213] [2020-01-16 19:03:51,153 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:51,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:51,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:51,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:51,153 INFO L87 Difference]: Start difference. First operand 1577 states and 7062 transitions. Second operand 11 states. [2020-01-16 19:03:51,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:51,320 INFO L93 Difference]: Finished difference Result 2950 states and 11718 transitions. [2020-01-16 19:03:51,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:51,321 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:51,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:51,328 INFO L225 Difference]: With dead ends: 2950 [2020-01-16 19:03:51,328 INFO L226 Difference]: Without dead ends: 2924 [2020-01-16 19:03:51,329 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:51,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2924 states. [2020-01-16 19:03:51,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2924 to 1571. [2020-01-16 19:03:51,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:03:51,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7045 transitions. [2020-01-16 19:03:51,399 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7045 transitions. Word has length 28 [2020-01-16 19:03:51,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:51,399 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7045 transitions. [2020-01-16 19:03:51,399 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:51,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7045 transitions. [2020-01-16 19:03:51,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:51,401 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:51,401 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:51,401 INFO L426 AbstractCegarLoop]: === Iteration 329 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:51,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:51,402 INFO L82 PathProgramCache]: Analyzing trace with hash 216464448, now seen corresponding path program 321 times [2020-01-16 19:03:51,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:51,402 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033964684] [2020-01-16 19:03:51,402 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:51,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:51,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:51,923 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033964684] [2020-01-16 19:03:51,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:51,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:51,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327284175] [2020-01-16 19:03:51,924 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:51,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:51,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:51,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:51,924 INFO L87 Difference]: Start difference. First operand 1571 states and 7045 transitions. Second operand 11 states. [2020-01-16 19:03:52,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:52,109 INFO L93 Difference]: Finished difference Result 2941 states and 11701 transitions. [2020-01-16 19:03:52,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:52,110 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:52,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:52,117 INFO L225 Difference]: With dead ends: 2941 [2020-01-16 19:03:52,117 INFO L226 Difference]: Without dead ends: 2926 [2020-01-16 19:03:52,118 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:52,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2020-01-16 19:03:52,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 1576. [2020-01-16 19:03:52,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 19:03:52,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7054 transitions. [2020-01-16 19:03:52,183 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7054 transitions. Word has length 28 [2020-01-16 19:03:52,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:52,183 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7054 transitions. [2020-01-16 19:03:52,183 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:52,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7054 transitions. [2020-01-16 19:03:52,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:52,186 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:52,186 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:52,186 INFO L426 AbstractCegarLoop]: === Iteration 330 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:52,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:52,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1879117136, now seen corresponding path program 322 times [2020-01-16 19:03:52,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:52,186 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758571959] [2020-01-16 19:03:52,186 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:52,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:52,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:52,696 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758571959] [2020-01-16 19:03:52,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:52,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:52,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514276472] [2020-01-16 19:03:52,697 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:52,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:52,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:52,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:52,697 INFO L87 Difference]: Start difference. First operand 1576 states and 7054 transitions. Second operand 11 states. [2020-01-16 19:03:52,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:52,879 INFO L93 Difference]: Finished difference Result 2943 states and 11700 transitions. [2020-01-16 19:03:52,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:52,879 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:52,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:52,886 INFO L225 Difference]: With dead ends: 2943 [2020-01-16 19:03:52,886 INFO L226 Difference]: Without dead ends: 2921 [2020-01-16 19:03:52,886 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:52,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2020-01-16 19:03:52,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 1571. [2020-01-16 19:03:52,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:03:52,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7040 transitions. [2020-01-16 19:03:52,952 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7040 transitions. Word has length 28 [2020-01-16 19:03:52,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:52,953 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7040 transitions. [2020-01-16 19:03:52,953 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:52,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7040 transitions. [2020-01-16 19:03:52,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:52,955 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:52,955 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:52,955 INFO L426 AbstractCegarLoop]: === Iteration 331 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:52,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:52,955 INFO L82 PathProgramCache]: Analyzing trace with hash 632784064, now seen corresponding path program 323 times [2020-01-16 19:03:52,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:52,956 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382694300] [2020-01-16 19:03:52,956 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:52,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:53,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:53,485 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382694300] [2020-01-16 19:03:53,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:53,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:53,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135138850] [2020-01-16 19:03:53,485 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:53,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:53,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:53,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:53,486 INFO L87 Difference]: Start difference. First operand 1571 states and 7040 transitions. Second operand 11 states. [2020-01-16 19:03:53,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:53,618 INFO L93 Difference]: Finished difference Result 2954 states and 11722 transitions. [2020-01-16 19:03:53,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:53,619 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:53,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:53,626 INFO L225 Difference]: With dead ends: 2954 [2020-01-16 19:03:53,626 INFO L226 Difference]: Without dead ends: 2934 [2020-01-16 19:03:53,626 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:53,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2934 states. [2020-01-16 19:03:53,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2934 to 1579. [2020-01-16 19:03:53,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 19:03:53,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7054 transitions. [2020-01-16 19:03:53,694 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7054 transitions. Word has length 28 [2020-01-16 19:03:53,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:53,694 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7054 transitions. [2020-01-16 19:03:53,694 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:53,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7054 transitions. [2020-01-16 19:03:53,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:53,696 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:53,696 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:53,696 INFO L426 AbstractCegarLoop]: === Iteration 332 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:53,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:53,696 INFO L82 PathProgramCache]: Analyzing trace with hash 806031756, now seen corresponding path program 324 times [2020-01-16 19:03:53,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:53,697 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493670107] [2020-01-16 19:03:53,697 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:53,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:54,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:54,214 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493670107] [2020-01-16 19:03:54,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:54,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:54,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006108451] [2020-01-16 19:03:54,215 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:54,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:54,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:54,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:54,215 INFO L87 Difference]: Start difference. First operand 1579 states and 7054 transitions. Second operand 11 states. [2020-01-16 19:03:54,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:54,401 INFO L93 Difference]: Finished difference Result 2951 states and 11709 transitions. [2020-01-16 19:03:54,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:54,401 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:54,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:54,409 INFO L225 Difference]: With dead ends: 2951 [2020-01-16 19:03:54,409 INFO L226 Difference]: Without dead ends: 2920 [2020-01-16 19:03:54,409 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:54,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2920 states. [2020-01-16 19:03:54,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2920 to 1565. [2020-01-16 19:03:54,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 19:03:54,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7024 transitions. [2020-01-16 19:03:54,477 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7024 transitions. Word has length 28 [2020-01-16 19:03:54,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:54,477 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7024 transitions. [2020-01-16 19:03:54,477 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:54,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7024 transitions. [2020-01-16 19:03:54,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:54,479 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:54,479 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:54,480 INFO L426 AbstractCegarLoop]: === Iteration 333 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:54,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:54,480 INFO L82 PathProgramCache]: Analyzing trace with hash -817234292, now seen corresponding path program 325 times [2020-01-16 19:03:54,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:54,480 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851228220] [2020-01-16 19:03:54,480 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:54,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:55,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:55,005 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851228220] [2020-01-16 19:03:55,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:55,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:55,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135157225] [2020-01-16 19:03:55,005 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:55,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:55,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:55,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:55,006 INFO L87 Difference]: Start difference. First operand 1565 states and 7024 transitions. Second operand 11 states. [2020-01-16 19:03:55,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:55,213 INFO L93 Difference]: Finished difference Result 2923 states and 11659 transitions. [2020-01-16 19:03:55,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:55,214 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:55,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:55,221 INFO L225 Difference]: With dead ends: 2923 [2020-01-16 19:03:55,221 INFO L226 Difference]: Without dead ends: 2908 [2020-01-16 19:03:55,221 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:55,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2020-01-16 19:03:55,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 1573. [2020-01-16 19:03:55,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:03:55,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7046 transitions. [2020-01-16 19:03:55,288 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7046 transitions. Word has length 28 [2020-01-16 19:03:55,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:55,288 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7046 transitions. [2020-01-16 19:03:55,288 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:55,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7046 transitions. [2020-01-16 19:03:55,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:55,291 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:55,291 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:55,291 INFO L426 AbstractCegarLoop]: === Iteration 334 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:55,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:55,291 INFO L82 PathProgramCache]: Analyzing trace with hash -643986600, now seen corresponding path program 326 times [2020-01-16 19:03:55,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:55,291 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298727075] [2020-01-16 19:03:55,291 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:55,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:55,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:55,814 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298727075] [2020-01-16 19:03:55,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:55,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:55,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693409058] [2020-01-16 19:03:55,815 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:55,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:55,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:55,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:55,815 INFO L87 Difference]: Start difference. First operand 1573 states and 7046 transitions. Second operand 11 states. [2020-01-16 19:03:55,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:55,993 INFO L93 Difference]: Finished difference Result 2922 states and 11653 transitions. [2020-01-16 19:03:55,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:55,994 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:55,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:56,000 INFO L225 Difference]: With dead ends: 2922 [2020-01-16 19:03:56,001 INFO L226 Difference]: Without dead ends: 2904 [2020-01-16 19:03:56,001 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:56,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2904 states. [2020-01-16 19:03:56,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2904 to 1569. [2020-01-16 19:03:56,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 19:03:56,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7035 transitions. [2020-01-16 19:03:56,068 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7035 transitions. Word has length 28 [2020-01-16 19:03:56,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:56,068 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7035 transitions. [2020-01-16 19:03:56,068 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:56,068 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7035 transitions. [2020-01-16 19:03:56,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:56,071 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:56,071 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:56,071 INFO L426 AbstractCegarLoop]: === Iteration 335 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:56,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:56,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1890319672, now seen corresponding path program 327 times [2020-01-16 19:03:56,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:56,071 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717239784] [2020-01-16 19:03:56,071 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:56,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:56,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:56,578 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717239784] [2020-01-16 19:03:56,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:56,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:56,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114634753] [2020-01-16 19:03:56,578 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:56,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:56,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:56,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:56,579 INFO L87 Difference]: Start difference. First operand 1569 states and 7035 transitions. Second operand 11 states. [2020-01-16 19:03:56,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:56,759 INFO L93 Difference]: Finished difference Result 2927 states and 11664 transitions. [2020-01-16 19:03:56,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:56,759 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:56,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:56,767 INFO L225 Difference]: With dead ends: 2927 [2020-01-16 19:03:56,767 INFO L226 Difference]: Without dead ends: 2912 [2020-01-16 19:03:56,767 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:56,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2912 states. [2020-01-16 19:03:56,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2912 to 1574. [2020-01-16 19:03:56,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 19:03:56,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7044 transitions. [2020-01-16 19:03:56,836 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7044 transitions. Word has length 28 [2020-01-16 19:03:56,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:56,836 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7044 transitions. [2020-01-16 19:03:56,836 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:56,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7044 transitions. [2020-01-16 19:03:56,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:56,839 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:56,839 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:56,839 INFO L426 AbstractCegarLoop]: === Iteration 336 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:56,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:56,839 INFO L82 PathProgramCache]: Analyzing trace with hash -227666984, now seen corresponding path program 328 times [2020-01-16 19:03:56,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:56,840 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109829277] [2020-01-16 19:03:56,840 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:56,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:57,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:57,375 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109829277] [2020-01-16 19:03:57,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:57,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:57,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912316515] [2020-01-16 19:03:57,376 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:57,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:57,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:57,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:57,376 INFO L87 Difference]: Start difference. First operand 1574 states and 7044 transitions. Second operand 11 states. [2020-01-16 19:03:57,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:57,560 INFO L93 Difference]: Finished difference Result 2929 states and 11663 transitions. [2020-01-16 19:03:57,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:57,561 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:57,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:57,568 INFO L225 Difference]: With dead ends: 2929 [2020-01-16 19:03:57,569 INFO L226 Difference]: Without dead ends: 2907 [2020-01-16 19:03:57,569 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:57,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2907 states. [2020-01-16 19:03:57,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2907 to 1569. [2020-01-16 19:03:57,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 19:03:57,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7031 transitions. [2020-01-16 19:03:57,636 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7031 transitions. Word has length 28 [2020-01-16 19:03:57,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:57,637 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7031 transitions. [2020-01-16 19:03:57,637 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:57,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7031 transitions. [2020-01-16 19:03:57,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:57,639 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:57,639 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:57,639 INFO L426 AbstractCegarLoop]: === Iteration 337 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:57,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:57,639 INFO L82 PathProgramCache]: Analyzing trace with hash -641360824, now seen corresponding path program 329 times [2020-01-16 19:03:57,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:57,640 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831501295] [2020-01-16 19:03:57,640 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:57,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:58,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:58,151 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831501295] [2020-01-16 19:03:58,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:58,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:58,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577329782] [2020-01-16 19:03:58,151 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:58,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:58,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:58,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:58,152 INFO L87 Difference]: Start difference. First operand 1569 states and 7031 transitions. Second operand 11 states. [2020-01-16 19:03:58,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:58,333 INFO L93 Difference]: Finished difference Result 2924 states and 11653 transitions. [2020-01-16 19:03:58,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:58,333 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:58,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:58,341 INFO L225 Difference]: With dead ends: 2924 [2020-01-16 19:03:58,341 INFO L226 Difference]: Without dead ends: 2910 [2020-01-16 19:03:58,341 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:58,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2910 states. [2020-01-16 19:03:58,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2910 to 1573. [2020-01-16 19:03:58,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:03:58,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7038 transitions. [2020-01-16 19:03:58,407 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7038 transitions. Word has length 28 [2020-01-16 19:03:58,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:58,408 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7038 transitions. [2020-01-16 19:03:58,408 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:58,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7038 transitions. [2020-01-16 19:03:58,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:58,410 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:58,410 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:58,410 INFO L426 AbstractCegarLoop]: === Iteration 338 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:58,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:58,410 INFO L82 PathProgramCache]: Analyzing trace with hash 848044172, now seen corresponding path program 330 times [2020-01-16 19:03:58,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:58,411 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147398803] [2020-01-16 19:03:58,411 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:58,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:58,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:58,923 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147398803] [2020-01-16 19:03:58,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:58,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:58,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762441516] [2020-01-16 19:03:58,924 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:58,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:58,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:58,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:58,924 INFO L87 Difference]: Start difference. First operand 1573 states and 7038 transitions. Second operand 11 states. [2020-01-16 19:03:59,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:59,104 INFO L93 Difference]: Finished difference Result 2927 states and 11655 transitions. [2020-01-16 19:03:59,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:59,104 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:59,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:59,112 INFO L225 Difference]: With dead ends: 2927 [2020-01-16 19:03:59,112 INFO L226 Difference]: Without dead ends: 2902 [2020-01-16 19:03:59,112 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:59,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2902 states. [2020-01-16 19:03:59,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2902 to 1565. [2020-01-16 19:03:59,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 19:03:59,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7020 transitions. [2020-01-16 19:03:59,177 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7020 transitions. Word has length 28 [2020-01-16 19:03:59,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:59,178 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7020 transitions. [2020-01-16 19:03:59,178 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:59,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7020 transitions. [2020-01-16 19:03:59,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:59,180 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:59,180 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:59,180 INFO L426 AbstractCegarLoop]: === Iteration 339 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:59,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:59,180 INFO L82 PathProgramCache]: Analyzing trace with hash 693176912, now seen corresponding path program 331 times [2020-01-16 19:03:59,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:59,180 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765009015] [2020-01-16 19:03:59,181 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:59,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:03:59,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:03:59,702 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765009015] [2020-01-16 19:03:59,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:03:59,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:03:59,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361808946] [2020-01-16 19:03:59,703 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:03:59,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:03:59,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:03:59,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:03:59,703 INFO L87 Difference]: Start difference. First operand 1565 states and 7020 transitions. Second operand 11 states. [2020-01-16 19:03:59,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:03:59,845 INFO L93 Difference]: Finished difference Result 2944 states and 11697 transitions. [2020-01-16 19:03:59,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:03:59,846 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:03:59,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:03:59,853 INFO L225 Difference]: With dead ends: 2944 [2020-01-16 19:03:59,853 INFO L226 Difference]: Without dead ends: 2924 [2020-01-16 19:03:59,854 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:03:59,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2924 states. [2020-01-16 19:03:59,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2924 to 1575. [2020-01-16 19:03:59,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:03:59,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7046 transitions. [2020-01-16 19:03:59,920 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7046 transitions. Word has length 28 [2020-01-16 19:03:59,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:03:59,920 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7046 transitions. [2020-01-16 19:03:59,920 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:03:59,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7046 transitions. [2020-01-16 19:03:59,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:03:59,922 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:03:59,922 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:03:59,922 INFO L426 AbstractCegarLoop]: === Iteration 340 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:03:59,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:03:59,923 INFO L82 PathProgramCache]: Analyzing trace with hash -622980392, now seen corresponding path program 332 times [2020-01-16 19:03:59,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:03:59,923 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145496139] [2020-01-16 19:03:59,923 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:03:59,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:00,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:00,443 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145496139] [2020-01-16 19:04:00,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:00,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:00,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158344930] [2020-01-16 19:04:00,443 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:00,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:00,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:00,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:00,444 INFO L87 Difference]: Start difference. First operand 1575 states and 7046 transitions. Second operand 11 states. [2020-01-16 19:04:00,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:00,615 INFO L93 Difference]: Finished difference Result 2938 states and 11681 transitions. [2020-01-16 19:04:00,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:00,615 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:00,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:00,622 INFO L225 Difference]: With dead ends: 2938 [2020-01-16 19:04:00,622 INFO L226 Difference]: Without dead ends: 2919 [2020-01-16 19:04:00,622 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:00,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2919 states. [2020-01-16 19:04:00,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2919 to 1570. [2020-01-16 19:04:00,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 19:04:00,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7033 transitions. [2020-01-16 19:04:00,690 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7033 transitions. Word has length 28 [2020-01-16 19:04:00,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:00,690 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7033 transitions. [2020-01-16 19:04:00,690 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:00,690 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7033 transitions. [2020-01-16 19:04:00,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:00,693 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:00,693 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:00,693 INFO L426 AbstractCegarLoop]: === Iteration 341 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:00,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:00,693 INFO L82 PathProgramCache]: Analyzing trace with hash -379908468, now seen corresponding path program 333 times [2020-01-16 19:04:00,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:00,693 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412638837] [2020-01-16 19:04:00,693 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:00,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:01,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:01,219 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412638837] [2020-01-16 19:04:01,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:01,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:01,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650857317] [2020-01-16 19:04:01,219 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:01,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:01,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:01,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:01,220 INFO L87 Difference]: Start difference. First operand 1570 states and 7033 transitions. Second operand 11 states. [2020-01-16 19:04:01,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:01,365 INFO L93 Difference]: Finished difference Result 2950 states and 11707 transitions. [2020-01-16 19:04:01,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:01,366 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:01,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:01,373 INFO L225 Difference]: With dead ends: 2950 [2020-01-16 19:04:01,374 INFO L226 Difference]: Without dead ends: 2930 [2020-01-16 19:04:01,374 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:01,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2020-01-16 19:04:01,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1578. [2020-01-16 19:04:01,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 19:04:01,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7047 transitions. [2020-01-16 19:04:01,440 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7047 transitions. Word has length 28 [2020-01-16 19:04:01,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:01,440 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7047 transitions. [2020-01-16 19:04:01,440 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:01,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7047 transitions. [2020-01-16 19:04:01,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:01,443 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:01,443 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:01,443 INFO L426 AbstractCegarLoop]: === Iteration 342 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:01,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:01,443 INFO L82 PathProgramCache]: Analyzing trace with hash -206660776, now seen corresponding path program 334 times [2020-01-16 19:04:01,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:01,443 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439773937] [2020-01-16 19:04:01,443 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:01,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:01,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:01,973 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439773937] [2020-01-16 19:04:01,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:01,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:01,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002417087] [2020-01-16 19:04:01,974 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:01,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:01,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:01,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:01,974 INFO L87 Difference]: Start difference. First operand 1578 states and 7047 transitions. Second operand 11 states. [2020-01-16 19:04:02,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:02,148 INFO L93 Difference]: Finished difference Result 2947 states and 11694 transitions. [2020-01-16 19:04:02,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:02,148 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:02,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:02,155 INFO L225 Difference]: With dead ends: 2947 [2020-01-16 19:04:02,155 INFO L226 Difference]: Without dead ends: 2922 [2020-01-16 19:04:02,155 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:02,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2922 states. [2020-01-16 19:04:02,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2922 to 1570. [2020-01-16 19:04:02,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 19:04:02,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7028 transitions. [2020-01-16 19:04:02,246 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7028 transitions. Word has length 28 [2020-01-16 19:04:02,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:02,246 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7028 transitions. [2020-01-16 19:04:02,246 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:02,246 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7028 transitions. [2020-01-16 19:04:02,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:02,249 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:02,249 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:02,249 INFO L426 AbstractCegarLoop]: === Iteration 343 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:02,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:02,249 INFO L82 PathProgramCache]: Analyzing trace with hash 452730764, now seen corresponding path program 335 times [2020-01-16 19:04:02,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:02,249 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229941613] [2020-01-16 19:04:02,249 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:02,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:02,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:02,760 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229941613] [2020-01-16 19:04:02,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:02,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:02,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952734172] [2020-01-16 19:04:02,761 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:02,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:02,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:02,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:02,761 INFO L87 Difference]: Start difference. First operand 1570 states and 7028 transitions. Second operand 11 states. [2020-01-16 19:04:02,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:02,982 INFO L93 Difference]: Finished difference Result 2934 states and 11669 transitions. [2020-01-16 19:04:02,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:02,983 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:02,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:02,990 INFO L225 Difference]: With dead ends: 2934 [2020-01-16 19:04:02,990 INFO L226 Difference]: Without dead ends: 2920 [2020-01-16 19:04:02,991 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:03,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2920 states. [2020-01-16 19:04:03,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2920 to 1574. [2020-01-16 19:04:03,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 19:04:03,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7035 transitions. [2020-01-16 19:04:03,059 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7035 transitions. Word has length 28 [2020-01-16 19:04:03,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:03,059 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7035 transitions. [2020-01-16 19:04:03,059 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:03,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7035 transitions. [2020-01-16 19:04:03,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:03,061 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:03,061 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:03,061 INFO L426 AbstractCegarLoop]: === Iteration 344 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:03,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:03,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1942135760, now seen corresponding path program 336 times [2020-01-16 19:04:03,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:03,062 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549069497] [2020-01-16 19:04:03,062 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:03,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:03,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:03,573 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549069497] [2020-01-16 19:04:03,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:03,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:03,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234708184] [2020-01-16 19:04:03,573 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:03,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:03,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:03,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:03,574 INFO L87 Difference]: Start difference. First operand 1574 states and 7035 transitions. Second operand 11 states. [2020-01-16 19:04:03,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:03,773 INFO L93 Difference]: Finished difference Result 2937 states and 11671 transitions. [2020-01-16 19:04:03,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:03,773 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:03,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:03,780 INFO L225 Difference]: With dead ends: 2937 [2020-01-16 19:04:03,781 INFO L226 Difference]: Without dead ends: 2906 [2020-01-16 19:04:03,781 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:03,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2906 states. [2020-01-16 19:04:03,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2906 to 1560. [2020-01-16 19:04:03,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1560 states. [2020-01-16 19:04:03,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1560 states to 1560 states and 7006 transitions. [2020-01-16 19:04:03,848 INFO L78 Accepts]: Start accepts. Automaton has 1560 states and 7006 transitions. Word has length 28 [2020-01-16 19:04:03,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:03,848 INFO L478 AbstractCegarLoop]: Abstraction has 1560 states and 7006 transitions. [2020-01-16 19:04:03,848 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:03,848 INFO L276 IsEmpty]: Start isEmpty. Operand 1560 states and 7006 transitions. [2020-01-16 19:04:03,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:03,851 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:03,851 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:03,851 INFO L426 AbstractCegarLoop]: === Iteration 345 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:03,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:03,851 INFO L82 PathProgramCache]: Analyzing trace with hash 727901384, now seen corresponding path program 337 times [2020-01-16 19:04:03,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:03,851 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839015947] [2020-01-16 19:04:03,851 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:03,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:04,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:04,362 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839015947] [2020-01-16 19:04:04,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:04,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:04,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914113051] [2020-01-16 19:04:04,363 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:04,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:04,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:04,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:04,363 INFO L87 Difference]: Start difference. First operand 1560 states and 7006 transitions. Second operand 11 states. [2020-01-16 19:04:04,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:04,568 INFO L93 Difference]: Finished difference Result 2946 states and 11716 transitions. [2020-01-16 19:04:04,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:04,568 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:04,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:04,576 INFO L225 Difference]: With dead ends: 2946 [2020-01-16 19:04:04,576 INFO L226 Difference]: Without dead ends: 2930 [2020-01-16 19:04:04,576 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:04,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2020-01-16 19:04:04,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1577. [2020-01-16 19:04:04,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 19:04:04,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7060 transitions. [2020-01-16 19:04:04,643 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7060 transitions. Word has length 28 [2020-01-16 19:04:04,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:04,643 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7060 transitions. [2020-01-16 19:04:04,643 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:04,643 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7060 transitions. [2020-01-16 19:04:04,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:04,645 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:04,645 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:04,645 INFO L426 AbstractCegarLoop]: === Iteration 346 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:04,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:04,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1472603882, now seen corresponding path program 338 times [2020-01-16 19:04:04,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:04,646 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492840670] [2020-01-16 19:04:04,646 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:04,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:05,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:05,182 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492840670] [2020-01-16 19:04:05,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:05,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:05,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442827860] [2020-01-16 19:04:05,182 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:05,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:05,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:05,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:05,183 INFO L87 Difference]: Start difference. First operand 1577 states and 7060 transitions. Second operand 11 states. [2020-01-16 19:04:05,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:05,340 INFO L93 Difference]: Finished difference Result 2950 states and 11717 transitions. [2020-01-16 19:04:05,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:05,341 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:05,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:05,348 INFO L225 Difference]: With dead ends: 2950 [2020-01-16 19:04:05,348 INFO L226 Difference]: Without dead ends: 2923 [2020-01-16 19:04:05,349 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:05,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2923 states. [2020-01-16 19:04:05,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2923 to 1570. [2020-01-16 19:04:05,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 19:04:05,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7042 transitions. [2020-01-16 19:04:05,414 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7042 transitions. Word has length 28 [2020-01-16 19:04:05,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:05,414 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7042 transitions. [2020-01-16 19:04:05,415 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:05,415 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7042 transitions. [2020-01-16 19:04:05,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:05,417 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:05,417 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:05,417 INFO L426 AbstractCegarLoop]: === Iteration 347 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:05,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:05,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1418269376, now seen corresponding path program 339 times [2020-01-16 19:04:05,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:05,417 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902027530] [2020-01-16 19:04:05,417 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:05,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:05,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:05,930 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902027530] [2020-01-16 19:04:05,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:05,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:05,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398388457] [2020-01-16 19:04:05,930 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:05,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:05,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:05,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:05,930 INFO L87 Difference]: Start difference. First operand 1570 states and 7042 transitions. Second operand 11 states. [2020-01-16 19:04:06,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:06,115 INFO L93 Difference]: Finished difference Result 2937 states and 11692 transitions. [2020-01-16 19:04:06,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:06,115 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:06,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:06,123 INFO L225 Difference]: With dead ends: 2937 [2020-01-16 19:04:06,123 INFO L226 Difference]: Without dead ends: 2921 [2020-01-16 19:04:06,123 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:06,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2020-01-16 19:04:06,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 1574. [2020-01-16 19:04:06,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 19:04:06,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7049 transitions. [2020-01-16 19:04:06,189 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7049 transitions. Word has length 28 [2020-01-16 19:04:06,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:06,189 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7049 transitions. [2020-01-16 19:04:06,189 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:06,189 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7049 transitions. [2020-01-16 19:04:06,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:06,192 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:06,192 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:06,192 INFO L426 AbstractCegarLoop]: === Iteration 348 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:06,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:06,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1989724182, now seen corresponding path program 340 times [2020-01-16 19:04:06,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:06,192 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187623181] [2020-01-16 19:04:06,193 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:06,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:06,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:06,715 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187623181] [2020-01-16 19:04:06,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:06,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:06,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565904767] [2020-01-16 19:04:06,715 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:06,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:06,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:06,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:06,716 INFO L87 Difference]: Start difference. First operand 1574 states and 7049 transitions. Second operand 11 states. [2020-01-16 19:04:06,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:06,904 INFO L93 Difference]: Finished difference Result 2935 states and 11684 transitions. [2020-01-16 19:04:06,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:06,905 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:06,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:06,912 INFO L225 Difference]: With dead ends: 2935 [2020-01-16 19:04:06,913 INFO L226 Difference]: Without dead ends: 2917 [2020-01-16 19:04:06,913 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:06,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2917 states. [2020-01-16 19:04:06,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2917 to 1570. [2020-01-16 19:04:06,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 19:04:06,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7038 transitions. [2020-01-16 19:04:06,985 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7038 transitions. Word has length 28 [2020-01-16 19:04:06,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:06,985 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7038 transitions. [2020-01-16 19:04:06,986 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:06,986 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7038 transitions. [2020-01-16 19:04:06,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:06,988 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:06,989 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:06,989 INFO L426 AbstractCegarLoop]: === Iteration 349 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:06,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:06,989 INFO L82 PathProgramCache]: Analyzing trace with hash 937374080, now seen corresponding path program 341 times [2020-01-16 19:04:06,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:06,989 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200959967] [2020-01-16 19:04:06,989 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:06,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:07,517 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 19:04:07,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:07,524 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200959967] [2020-01-16 19:04:07,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:07,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:07,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150350427] [2020-01-16 19:04:07,525 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:07,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:07,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:07,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:07,526 INFO L87 Difference]: Start difference. First operand 1570 states and 7038 transitions. Second operand 11 states. [2020-01-16 19:04:07,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:07,681 INFO L93 Difference]: Finished difference Result 2946 states and 11704 transitions. [2020-01-16 19:04:07,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:07,682 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:07,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:07,689 INFO L225 Difference]: With dead ends: 2946 [2020-01-16 19:04:07,689 INFO L226 Difference]: Without dead ends: 2926 [2020-01-16 19:04:07,689 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:07,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2020-01-16 19:04:07,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 1575. [2020-01-16 19:04:07,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:04:07,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7046 transitions. [2020-01-16 19:04:07,757 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7046 transitions. Word has length 28 [2020-01-16 19:04:07,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:07,757 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7046 transitions. [2020-01-16 19:04:07,757 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:07,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7046 transitions. [2020-01-16 19:04:07,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:07,759 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:07,760 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:07,760 INFO L426 AbstractCegarLoop]: === Iteration 350 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:07,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:07,760 INFO L82 PathProgramCache]: Analyzing trace with hash -378783224, now seen corresponding path program 342 times [2020-01-16 19:04:07,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:07,760 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375368668] [2020-01-16 19:04:07,760 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:07,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:08,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:08,272 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375368668] [2020-01-16 19:04:08,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:08,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:08,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108603378] [2020-01-16 19:04:08,272 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:08,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:08,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:08,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:08,273 INFO L87 Difference]: Start difference. First operand 1575 states and 7046 transitions. Second operand 11 states. [2020-01-16 19:04:08,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:08,502 INFO L93 Difference]: Finished difference Result 2940 states and 11688 transitions. [2020-01-16 19:04:08,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:08,502 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:08,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:08,510 INFO L225 Difference]: With dead ends: 2940 [2020-01-16 19:04:08,510 INFO L226 Difference]: Without dead ends: 2916 [2020-01-16 19:04:08,510 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:08,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2020-01-16 19:04:08,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 1565. [2020-01-16 19:04:08,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 19:04:08,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7024 transitions. [2020-01-16 19:04:08,577 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7024 transitions. Word has length 28 [2020-01-16 19:04:08,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:08,577 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7024 transitions. [2020-01-16 19:04:08,578 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:08,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7024 transitions. [2020-01-16 19:04:08,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:08,580 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:08,580 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:08,580 INFO L426 AbstractCegarLoop]: === Iteration 351 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:08,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:08,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1821992972, now seen corresponding path program 343 times [2020-01-16 19:04:08,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:08,580 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582829652] [2020-01-16 19:04:08,581 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:08,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:09,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:09,114 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582829652] [2020-01-16 19:04:09,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:09,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:09,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761766566] [2020-01-16 19:04:09,114 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:09,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:09,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:09,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:09,115 INFO L87 Difference]: Start difference. First operand 1565 states and 7024 transitions. Second operand 11 states. [2020-01-16 19:04:09,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:09,306 INFO L93 Difference]: Finished difference Result 2956 states and 11740 transitions. [2020-01-16 19:04:09,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:09,307 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:09,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:09,314 INFO L225 Difference]: With dead ends: 2956 [2020-01-16 19:04:09,315 INFO L226 Difference]: Without dead ends: 2940 [2020-01-16 19:04:09,315 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:09,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2940 states. [2020-01-16 19:04:09,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2940 to 1579. [2020-01-16 19:04:09,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 19:04:09,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7063 transitions. [2020-01-16 19:04:09,383 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7063 transitions. Word has length 28 [2020-01-16 19:04:09,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:09,383 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7063 transitions. [2020-01-16 19:04:09,383 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:09,383 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7063 transitions. [2020-01-16 19:04:09,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:09,385 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:09,385 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:09,385 INFO L426 AbstractCegarLoop]: === Iteration 352 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:09,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:09,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1728271826, now seen corresponding path program 344 times [2020-01-16 19:04:09,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:09,386 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532085462] [2020-01-16 19:04:09,386 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:09,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:09,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:09,916 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532085462] [2020-01-16 19:04:09,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:09,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:09,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483920114] [2020-01-16 19:04:09,916 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:09,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:09,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:09,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:09,917 INFO L87 Difference]: Start difference. First operand 1579 states and 7063 transitions. Second operand 11 states. [2020-01-16 19:04:10,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:10,075 INFO L93 Difference]: Finished difference Result 2960 states and 11741 transitions. [2020-01-16 19:04:10,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:10,075 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:10,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:10,082 INFO L225 Difference]: With dead ends: 2960 [2020-01-16 19:04:10,083 INFO L226 Difference]: Without dead ends: 2933 [2020-01-16 19:04:10,083 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:10,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2933 states. [2020-01-16 19:04:10,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2933 to 1572. [2020-01-16 19:04:10,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 19:04:10,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7043 transitions. [2020-01-16 19:04:10,148 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7043 transitions. Word has length 28 [2020-01-16 19:04:10,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:10,149 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7043 transitions. [2020-01-16 19:04:10,149 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:10,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7043 transitions. [2020-01-16 19:04:10,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:10,151 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:10,151 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:10,151 INFO L426 AbstractCegarLoop]: === Iteration 353 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:10,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:10,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1397263168, now seen corresponding path program 345 times [2020-01-16 19:04:10,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:10,153 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921039019] [2020-01-16 19:04:10,153 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:10,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:10,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:10,684 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921039019] [2020-01-16 19:04:10,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:10,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:10,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46498995] [2020-01-16 19:04:10,684 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:10,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:10,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:10,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:10,685 INFO L87 Difference]: Start difference. First operand 1572 states and 7043 transitions. Second operand 11 states. [2020-01-16 19:04:10,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:10,874 INFO L93 Difference]: Finished difference Result 2952 states and 11726 transitions. [2020-01-16 19:04:10,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:10,875 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:10,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:10,881 INFO L225 Difference]: With dead ends: 2952 [2020-01-16 19:04:10,881 INFO L226 Difference]: Without dead ends: 2936 [2020-01-16 19:04:10,882 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:10,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2936 states. [2020-01-16 19:04:10,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2936 to 1578. [2020-01-16 19:04:10,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 19:04:10,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7054 transitions. [2020-01-16 19:04:10,949 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7054 transitions. Word has length 28 [2020-01-16 19:04:10,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:10,949 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7054 transitions. [2020-01-16 19:04:10,949 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:10,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7054 transitions. [2020-01-16 19:04:10,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:10,952 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:10,952 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:10,952 INFO L426 AbstractCegarLoop]: === Iteration 354 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:10,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:10,952 INFO L82 PathProgramCache]: Analyzing trace with hash -479312978, now seen corresponding path program 346 times [2020-01-16 19:04:10,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:10,952 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012756980] [2020-01-16 19:04:10,952 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:10,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:11,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:11,487 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012756980] [2020-01-16 19:04:11,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:11,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:11,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853053328] [2020-01-16 19:04:11,488 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:11,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:11,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:11,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:11,488 INFO L87 Difference]: Start difference. First operand 1578 states and 7054 transitions. Second operand 11 states. [2020-01-16 19:04:11,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:11,700 INFO L93 Difference]: Finished difference Result 2953 states and 11722 transitions. [2020-01-16 19:04:11,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:11,700 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:11,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:11,707 INFO L225 Difference]: With dead ends: 2953 [2020-01-16 19:04:11,707 INFO L226 Difference]: Without dead ends: 2930 [2020-01-16 19:04:11,707 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:11,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2020-01-16 19:04:11,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1572. [2020-01-16 19:04:11,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 19:04:11,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7037 transitions. [2020-01-16 19:04:11,773 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7037 transitions. Word has length 28 [2020-01-16 19:04:11,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:11,773 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7037 transitions. [2020-01-16 19:04:11,773 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:11,773 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7037 transitions. [2020-01-16 19:04:11,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:11,776 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:11,776 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:11,776 INFO L426 AbstractCegarLoop]: === Iteration 355 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:11,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:11,776 INFO L82 PathProgramCache]: Analyzing trace with hash 958380288, now seen corresponding path program 347 times [2020-01-16 19:04:11,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:11,776 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824262309] [2020-01-16 19:04:11,776 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:11,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:12,308 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 19:04:12,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:12,316 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824262309] [2020-01-16 19:04:12,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:12,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:12,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214252180] [2020-01-16 19:04:12,316 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:12,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:12,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:12,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:12,316 INFO L87 Difference]: Start difference. First operand 1572 states and 7037 transitions. Second operand 11 states. [2020-01-16 19:04:12,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:12,467 INFO L93 Difference]: Finished difference Result 2962 states and 11739 transitions. [2020-01-16 19:04:12,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:12,468 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:12,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:12,475 INFO L225 Difference]: With dead ends: 2962 [2020-01-16 19:04:12,476 INFO L226 Difference]: Without dead ends: 2942 [2020-01-16 19:04:12,476 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:12,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2020-01-16 19:04:12,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 1580. [2020-01-16 19:04:12,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 19:04:12,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7051 transitions. [2020-01-16 19:04:12,542 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7051 transitions. Word has length 28 [2020-01-16 19:04:12,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:12,542 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7051 transitions. [2020-01-16 19:04:12,543 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:12,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7051 transitions. [2020-01-16 19:04:12,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:12,545 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:12,545 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:12,545 INFO L426 AbstractCegarLoop]: === Iteration 356 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:12,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:12,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1131627980, now seen corresponding path program 348 times [2020-01-16 19:04:12,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:12,545 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220510669] [2020-01-16 19:04:12,545 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:12,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:13,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:13,101 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220510669] [2020-01-16 19:04:13,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:13,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:13,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237367379] [2020-01-16 19:04:13,101 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:13,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:13,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:13,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:13,101 INFO L87 Difference]: Start difference. First operand 1580 states and 7051 transitions. Second operand 11 states. [2020-01-16 19:04:13,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:13,272 INFO L93 Difference]: Finished difference Result 2959 states and 11726 transitions. [2020-01-16 19:04:13,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:13,273 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:13,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:13,279 INFO L225 Difference]: With dead ends: 2959 [2020-01-16 19:04:13,280 INFO L226 Difference]: Without dead ends: 2927 [2020-01-16 19:04:13,280 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:13,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2927 states. [2020-01-16 19:04:13,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2927 to 1565. [2020-01-16 19:04:13,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 19:04:13,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7019 transitions. [2020-01-16 19:04:13,346 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7019 transitions. Word has length 28 [2020-01-16 19:04:13,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:13,346 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7019 transitions. [2020-01-16 19:04:13,346 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:13,346 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7019 transitions. [2020-01-16 19:04:13,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:13,348 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:13,348 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:13,348 INFO L426 AbstractCegarLoop]: === Iteration 357 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:13,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:13,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1864005388, now seen corresponding path program 349 times [2020-01-16 19:04:13,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:13,349 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417464777] [2020-01-16 19:04:13,349 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:13,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:13,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:13,861 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417464777] [2020-01-16 19:04:13,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:13,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:13,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503315949] [2020-01-16 19:04:13,862 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:13,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:13,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:13,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:13,862 INFO L87 Difference]: Start difference. First operand 1565 states and 7019 transitions. Second operand 11 states. [2020-01-16 19:04:14,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:14,044 INFO L93 Difference]: Finished difference Result 2931 states and 11675 transitions. [2020-01-16 19:04:14,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:14,045 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:14,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:14,053 INFO L225 Difference]: With dead ends: 2931 [2020-01-16 19:04:14,053 INFO L226 Difference]: Without dead ends: 2915 [2020-01-16 19:04:14,053 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:14,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2915 states. [2020-01-16 19:04:14,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2915 to 1573. [2020-01-16 19:04:14,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:04:14,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7041 transitions. [2020-01-16 19:04:14,120 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7041 transitions. Word has length 28 [2020-01-16 19:04:14,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:14,120 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7041 transitions. [2020-01-16 19:04:14,121 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:14,121 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7041 transitions. [2020-01-16 19:04:14,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:14,123 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:14,123 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:14,123 INFO L426 AbstractCegarLoop]: === Iteration 358 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:14,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:14,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1292550582, now seen corresponding path program 350 times [2020-01-16 19:04:14,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:14,123 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718252628] [2020-01-16 19:04:14,123 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:14,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:14,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:14,640 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718252628] [2020-01-16 19:04:14,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:14,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:14,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36381450] [2020-01-16 19:04:14,640 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:14,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:14,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:14,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:14,641 INFO L87 Difference]: Start difference. First operand 1573 states and 7041 transitions. Second operand 11 states. [2020-01-16 19:04:14,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:14,815 INFO L93 Difference]: Finished difference Result 2929 states and 11667 transitions. [2020-01-16 19:04:14,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:14,816 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:14,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:14,823 INFO L225 Difference]: With dead ends: 2929 [2020-01-16 19:04:14,823 INFO L226 Difference]: Without dead ends: 2911 [2020-01-16 19:04:14,823 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:14,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2020-01-16 19:04:14,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 1569. [2020-01-16 19:04:14,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 19:04:14,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7030 transitions. [2020-01-16 19:04:14,891 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7030 transitions. Word has length 28 [2020-01-16 19:04:14,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:14,891 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7030 transitions. [2020-01-16 19:04:14,891 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:14,891 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7030 transitions. [2020-01-16 19:04:14,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:14,893 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:14,893 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:14,893 INFO L426 AbstractCegarLoop]: === Iteration 359 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:14,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:14,894 INFO L82 PathProgramCache]: Analyzing trace with hash 790920008, now seen corresponding path program 351 times [2020-01-16 19:04:14,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:14,894 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410267498] [2020-01-16 19:04:14,894 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:14,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:15,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:15,419 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410267498] [2020-01-16 19:04:15,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:15,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:15,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100673957] [2020-01-16 19:04:15,419 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:15,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:15,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:15,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:15,420 INFO L87 Difference]: Start difference. First operand 1569 states and 7030 transitions. Second operand 11 states. [2020-01-16 19:04:15,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:15,598 INFO L93 Difference]: Finished difference Result 2936 states and 11683 transitions. [2020-01-16 19:04:15,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:15,599 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:15,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:15,607 INFO L225 Difference]: With dead ends: 2936 [2020-01-16 19:04:15,607 INFO L226 Difference]: Without dead ends: 2920 [2020-01-16 19:04:15,607 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:15,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2920 states. [2020-01-16 19:04:15,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2920 to 1575. [2020-01-16 19:04:15,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:04:15,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7041 transitions. [2020-01-16 19:04:15,675 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7041 transitions. Word has length 28 [2020-01-16 19:04:15,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:15,675 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7041 transitions. [2020-01-16 19:04:15,675 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:15,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7041 transitions. [2020-01-16 19:04:15,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:15,678 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:15,678 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:15,678 INFO L426 AbstractCegarLoop]: === Iteration 360 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:15,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:15,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1708870198, now seen corresponding path program 352 times [2020-01-16 19:04:15,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:15,678 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138812789] [2020-01-16 19:04:15,678 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:15,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:16,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:16,206 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138812789] [2020-01-16 19:04:16,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:16,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:16,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755504760] [2020-01-16 19:04:16,206 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:16,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:16,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:16,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:16,207 INFO L87 Difference]: Start difference. First operand 1575 states and 7041 transitions. Second operand 11 states. [2020-01-16 19:04:16,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:16,391 INFO L93 Difference]: Finished difference Result 2937 states and 11679 transitions. [2020-01-16 19:04:16,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:16,392 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:16,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:16,399 INFO L225 Difference]: With dead ends: 2937 [2020-01-16 19:04:16,399 INFO L226 Difference]: Without dead ends: 2914 [2020-01-16 19:04:16,400 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:16,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2914 states. [2020-01-16 19:04:16,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2914 to 1569. [2020-01-16 19:04:16,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 19:04:16,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7026 transitions. [2020-01-16 19:04:16,465 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7026 transitions. Word has length 28 [2020-01-16 19:04:16,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:16,466 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7026 transitions. [2020-01-16 19:04:16,466 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:16,466 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7026 transitions. [2020-01-16 19:04:16,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:16,468 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:16,468 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:16,468 INFO L426 AbstractCegarLoop]: === Iteration 361 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:16,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:16,468 INFO L82 PathProgramCache]: Analyzing trace with hash -315764600, now seen corresponding path program 353 times [2020-01-16 19:04:16,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:16,468 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392128524] [2020-01-16 19:04:16,469 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:16,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:16,990 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 19:04:16,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:16,998 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392128524] [2020-01-16 19:04:16,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:16,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:16,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048566528] [2020-01-16 19:04:16,998 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:16,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:16,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:16,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:16,998 INFO L87 Difference]: Start difference. First operand 1569 states and 7026 transitions. Second operand 11 states. [2020-01-16 19:04:17,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:17,205 INFO L93 Difference]: Finished difference Result 2930 states and 11665 transitions. [2020-01-16 19:04:17,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:17,205 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:17,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:17,213 INFO L225 Difference]: With dead ends: 2930 [2020-01-16 19:04:17,213 INFO L226 Difference]: Without dead ends: 2916 [2020-01-16 19:04:17,213 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:17,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2020-01-16 19:04:17,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 1573. [2020-01-16 19:04:17,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:04:17,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7033 transitions. [2020-01-16 19:04:17,279 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7033 transitions. Word has length 28 [2020-01-16 19:04:17,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:17,279 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7033 transitions. [2020-01-16 19:04:17,279 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:17,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7033 transitions. [2020-01-16 19:04:17,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:17,281 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:17,281 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:17,281 INFO L426 AbstractCegarLoop]: === Iteration 362 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:17,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:17,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1173640396, now seen corresponding path program 354 times [2020-01-16 19:04:17,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:17,282 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550439028] [2020-01-16 19:04:17,282 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:17,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:17,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:17,805 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550439028] [2020-01-16 19:04:17,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:17,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:17,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404972880] [2020-01-16 19:04:17,805 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:17,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:17,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:17,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:17,806 INFO L87 Difference]: Start difference. First operand 1573 states and 7033 transitions. Second operand 11 states. [2020-01-16 19:04:17,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:17,984 INFO L93 Difference]: Finished difference Result 2933 states and 11667 transitions. [2020-01-16 19:04:17,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:17,985 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:17,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:17,992 INFO L225 Difference]: With dead ends: 2933 [2020-01-16 19:04:17,992 INFO L226 Difference]: Without dead ends: 2908 [2020-01-16 19:04:17,993 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:18,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2020-01-16 19:04:18,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 1565. [2020-01-16 19:04:18,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 19:04:18,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7015 transitions. [2020-01-16 19:04:18,080 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7015 transitions. Word has length 28 [2020-01-16 19:04:18,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:18,080 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7015 transitions. [2020-01-16 19:04:18,080 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:18,080 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7015 transitions. [2020-01-16 19:04:18,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:18,083 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:18,083 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:18,083 INFO L426 AbstractCegarLoop]: === Iteration 363 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:18,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:18,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1675756306, now seen corresponding path program 355 times [2020-01-16 19:04:18,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:18,083 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398603330] [2020-01-16 19:04:18,083 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:18,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:18,597 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398603330] [2020-01-16 19:04:18,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:18,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:18,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675408520] [2020-01-16 19:04:18,597 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:18,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:18,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:18,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:18,598 INFO L87 Difference]: Start difference. First operand 1565 states and 7015 transitions. Second operand 11 states. [2020-01-16 19:04:18,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:18,738 INFO L93 Difference]: Finished difference Result 2948 states and 11704 transitions. [2020-01-16 19:04:18,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:18,738 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:18,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:18,746 INFO L225 Difference]: With dead ends: 2948 [2020-01-16 19:04:18,746 INFO L226 Difference]: Without dead ends: 2928 [2020-01-16 19:04:18,746 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:18,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2020-01-16 19:04:18,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 1575. [2020-01-16 19:04:18,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:04:18,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7041 transitions. [2020-01-16 19:04:18,814 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7041 transitions. Word has length 28 [2020-01-16 19:04:18,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:18,814 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7041 transitions. [2020-01-16 19:04:18,814 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:18,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7041 transitions. [2020-01-16 19:04:18,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:18,816 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:18,816 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:18,816 INFO L426 AbstractCegarLoop]: === Iteration 364 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:18,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:18,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1303053686, now seen corresponding path program 356 times [2020-01-16 19:04:18,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:18,817 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164467006] [2020-01-16 19:04:18,817 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:18,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:19,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:19,332 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164467006] [2020-01-16 19:04:19,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:19,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:19,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623089238] [2020-01-16 19:04:19,332 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:19,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:19,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:19,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:19,333 INFO L87 Difference]: Start difference. First operand 1575 states and 7041 transitions. Second operand 11 states. [2020-01-16 19:04:19,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:19,518 INFO L93 Difference]: Finished difference Result 2942 states and 11688 transitions. [2020-01-16 19:04:19,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:19,518 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:19,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:19,526 INFO L225 Difference]: With dead ends: 2942 [2020-01-16 19:04:19,526 INFO L226 Difference]: Without dead ends: 2923 [2020-01-16 19:04:19,526 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:19,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2923 states. [2020-01-16 19:04:19,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2923 to 1570. [2020-01-16 19:04:19,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 19:04:19,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7028 transitions. [2020-01-16 19:04:19,592 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7028 transitions. Word has length 28 [2020-01-16 19:04:19,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:19,592 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7028 transitions. [2020-01-16 19:04:19,592 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:19,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7028 transitions. [2020-01-16 19:04:19,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:19,594 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:19,594 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:19,594 INFO L426 AbstractCegarLoop]: === Iteration 365 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:19,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:19,594 INFO L82 PathProgramCache]: Analyzing trace with hash 1546125610, now seen corresponding path program 357 times [2020-01-16 19:04:19,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:19,595 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91035459] [2020-01-16 19:04:19,595 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:19,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:20,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:20,136 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91035459] [2020-01-16 19:04:20,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:20,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:20,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448896378] [2020-01-16 19:04:20,136 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:20,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:20,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:20,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:20,137 INFO L87 Difference]: Start difference. First operand 1570 states and 7028 transitions. Second operand 11 states. [2020-01-16 19:04:20,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:20,306 INFO L93 Difference]: Finished difference Result 2954 states and 11714 transitions. [2020-01-16 19:04:20,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:20,306 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:20,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:20,313 INFO L225 Difference]: With dead ends: 2954 [2020-01-16 19:04:20,313 INFO L226 Difference]: Without dead ends: 2934 [2020-01-16 19:04:20,314 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:20,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2934 states. [2020-01-16 19:04:20,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2934 to 1578. [2020-01-16 19:04:20,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 19:04:20,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7042 transitions. [2020-01-16 19:04:20,379 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7042 transitions. Word has length 28 [2020-01-16 19:04:20,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:20,379 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7042 transitions. [2020-01-16 19:04:20,379 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:20,379 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7042 transitions. [2020-01-16 19:04:20,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:20,382 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:20,382 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:20,382 INFO L426 AbstractCegarLoop]: === Iteration 366 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:20,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:20,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1719373302, now seen corresponding path program 358 times [2020-01-16 19:04:20,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:20,382 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295695962] [2020-01-16 19:04:20,382 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:20,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:20,918 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 19:04:20,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:20,925 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295695962] [2020-01-16 19:04:20,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:20,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:20,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207630129] [2020-01-16 19:04:20,926 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:20,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:20,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:20,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:20,926 INFO L87 Difference]: Start difference. First operand 1578 states and 7042 transitions. Second operand 11 states. [2020-01-16 19:04:21,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:21,146 INFO L93 Difference]: Finished difference Result 2951 states and 11701 transitions. [2020-01-16 19:04:21,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:21,146 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:21,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:21,153 INFO L225 Difference]: With dead ends: 2951 [2020-01-16 19:04:21,153 INFO L226 Difference]: Without dead ends: 2926 [2020-01-16 19:04:21,153 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:21,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2020-01-16 19:04:21,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 1570. [2020-01-16 19:04:21,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 19:04:21,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7023 transitions. [2020-01-16 19:04:21,220 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7023 transitions. Word has length 28 [2020-01-16 19:04:21,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:21,220 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7023 transitions. [2020-01-16 19:04:21,220 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:21,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7023 transitions. [2020-01-16 19:04:21,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:21,222 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:21,222 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:21,222 INFO L426 AbstractCegarLoop]: === Iteration 367 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:21,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:21,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1916202454, now seen corresponding path program 359 times [2020-01-16 19:04:21,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:21,223 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244615246] [2020-01-16 19:04:21,223 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:21,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:21,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:21,747 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244615246] [2020-01-16 19:04:21,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:21,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:21,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973451833] [2020-01-16 19:04:21,747 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:21,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:21,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:21,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:21,748 INFO L87 Difference]: Start difference. First operand 1570 states and 7023 transitions. Second operand 11 states. [2020-01-16 19:04:21,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:21,932 INFO L93 Difference]: Finished difference Result 2938 states and 11676 transitions. [2020-01-16 19:04:21,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:21,932 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:21,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:21,939 INFO L225 Difference]: With dead ends: 2938 [2020-01-16 19:04:21,939 INFO L226 Difference]: Without dead ends: 2924 [2020-01-16 19:04:21,939 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:21,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2924 states. [2020-01-16 19:04:22,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2924 to 1574. [2020-01-16 19:04:22,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 19:04:22,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7030 transitions. [2020-01-16 19:04:22,005 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7030 transitions. Word has length 28 [2020-01-16 19:04:22,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:22,005 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7030 transitions. [2020-01-16 19:04:22,006 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:22,006 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7030 transitions. [2020-01-16 19:04:22,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:22,008 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:22,008 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:22,008 INFO L426 AbstractCegarLoop]: === Iteration 368 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:22,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:22,008 INFO L82 PathProgramCache]: Analyzing trace with hash -426797458, now seen corresponding path program 360 times [2020-01-16 19:04:22,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:22,009 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133645020] [2020-01-16 19:04:22,009 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:22,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:22,520 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 19:04:22,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:22,527 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133645020] [2020-01-16 19:04:22,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:22,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:22,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436784219] [2020-01-16 19:04:22,528 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:22,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:22,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:22,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:22,528 INFO L87 Difference]: Start difference. First operand 1574 states and 7030 transitions. Second operand 11 states. [2020-01-16 19:04:22,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:22,742 INFO L93 Difference]: Finished difference Result 2941 states and 11678 transitions. [2020-01-16 19:04:22,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:22,743 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:22,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:22,750 INFO L225 Difference]: With dead ends: 2941 [2020-01-16 19:04:22,750 INFO L226 Difference]: Without dead ends: 2905 [2020-01-16 19:04:22,750 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:22,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2905 states. [2020-01-16 19:04:22,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2905 to 1555. [2020-01-16 19:04:22,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1555 states. [2020-01-16 19:04:22,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 6992 transitions. [2020-01-16 19:04:22,818 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 6992 transitions. Word has length 28 [2020-01-16 19:04:22,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:22,819 INFO L478 AbstractCegarLoop]: Abstraction has 1555 states and 6992 transitions. [2020-01-16 19:04:22,819 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:22,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 6992 transitions. [2020-01-16 19:04:22,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:22,821 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:22,821 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:22,821 INFO L426 AbstractCegarLoop]: === Iteration 369 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:22,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:22,821 INFO L82 PathProgramCache]: Analyzing trace with hash 313455144, now seen corresponding path program 361 times [2020-01-16 19:04:22,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:22,822 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369037583] [2020-01-16 19:04:22,822 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:22,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:23,255 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 19:04:23,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:23,375 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369037583] [2020-01-16 19:04:23,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:23,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:23,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939330050] [2020-01-16 19:04:23,376 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:23,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:23,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:23,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:23,376 INFO L87 Difference]: Start difference. First operand 1555 states and 6992 transitions. Second operand 11 states. [2020-01-16 19:04:23,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:23,592 INFO L93 Difference]: Finished difference Result 2905 states and 11627 transitions. [2020-01-16 19:04:23,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:23,592 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:23,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:23,600 INFO L225 Difference]: With dead ends: 2905 [2020-01-16 19:04:23,600 INFO L226 Difference]: Without dead ends: 2890 [2020-01-16 19:04:23,600 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:23,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2890 states. [2020-01-16 19:04:23,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2890 to 1573. [2020-01-16 19:04:23,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:04:23,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7062 transitions. [2020-01-16 19:04:23,668 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7062 transitions. Word has length 28 [2020-01-16 19:04:23,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:23,668 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7062 transitions. [2020-01-16 19:04:23,668 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:23,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7062 transitions. [2020-01-16 19:04:23,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:23,671 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:23,671 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:23,671 INFO L426 AbstractCegarLoop]: === Iteration 370 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:23,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:23,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1058157642, now seen corresponding path program 362 times [2020-01-16 19:04:23,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:23,671 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455018976] [2020-01-16 19:04:23,671 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:23,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:24,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:24,195 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455018976] [2020-01-16 19:04:24,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:24,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:24,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256035578] [2020-01-16 19:04:24,195 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:24,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:24,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:24,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:24,196 INFO L87 Difference]: Start difference. First operand 1573 states and 7062 transitions. Second operand 11 states. [2020-01-16 19:04:24,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:24,407 INFO L93 Difference]: Finished difference Result 2906 states and 11624 transitions. [2020-01-16 19:04:24,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:24,407 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:24,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:24,415 INFO L225 Difference]: With dead ends: 2906 [2020-01-16 19:04:24,415 INFO L226 Difference]: Without dead ends: 2885 [2020-01-16 19:04:24,415 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:24,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2885 states. [2020-01-16 19:04:24,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2885 to 1568. [2020-01-16 19:04:24,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 19:04:24,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7048 transitions. [2020-01-16 19:04:24,481 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7048 transitions. Word has length 28 [2020-01-16 19:04:24,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:24,481 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7048 transitions. [2020-01-16 19:04:24,481 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:24,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7048 transitions. [2020-01-16 19:04:24,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:24,483 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:24,483 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:24,483 INFO L426 AbstractCegarLoop]: === Iteration 371 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:24,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:24,483 INFO L82 PathProgramCache]: Analyzing trace with hash -759630236, now seen corresponding path program 363 times [2020-01-16 19:04:24,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:24,484 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841444193] [2020-01-16 19:04:24,484 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:24,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:25,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:25,007 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841444193] [2020-01-16 19:04:25,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:25,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:25,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834329305] [2020-01-16 19:04:25,007 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:25,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:25,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:25,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:25,008 INFO L87 Difference]: Start difference. First operand 1568 states and 7048 transitions. Second operand 11 states. [2020-01-16 19:04:25,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:25,237 INFO L93 Difference]: Finished difference Result 2907 states and 11626 transitions. [2020-01-16 19:04:25,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:25,237 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:25,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:25,244 INFO L225 Difference]: With dead ends: 2907 [2020-01-16 19:04:25,244 INFO L226 Difference]: Without dead ends: 2892 [2020-01-16 19:04:25,244 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:25,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2892 states. [2020-01-16 19:04:25,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2892 to 1573. [2020-01-16 19:04:25,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:04:25,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7057 transitions. [2020-01-16 19:04:25,312 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7057 transitions. Word has length 28 [2020-01-16 19:04:25,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:25,312 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7057 transitions. [2020-01-16 19:04:25,312 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:25,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7057 transitions. [2020-01-16 19:04:25,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:25,314 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:25,314 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:25,315 INFO L426 AbstractCegarLoop]: === Iteration 372 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:25,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:25,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1474477258, now seen corresponding path program 364 times [2020-01-16 19:04:25,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:25,315 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340735336] [2020-01-16 19:04:25,315 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:25,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:25,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:25,827 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340735336] [2020-01-16 19:04:25,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:25,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:25,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495101745] [2020-01-16 19:04:25,827 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:25,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:25,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:25,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:25,828 INFO L87 Difference]: Start difference. First operand 1573 states and 7057 transitions. Second operand 11 states. [2020-01-16 19:04:26,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:26,045 INFO L93 Difference]: Finished difference Result 2910 states and 11627 transitions. [2020-01-16 19:04:26,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:26,046 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:26,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:26,053 INFO L225 Difference]: With dead ends: 2910 [2020-01-16 19:04:26,053 INFO L226 Difference]: Without dead ends: 2887 [2020-01-16 19:04:26,054 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:26,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2887 states. [2020-01-16 19:04:26,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2887 to 1568. [2020-01-16 19:04:26,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 19:04:26,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7043 transitions. [2020-01-16 19:04:26,121 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7043 transitions. Word has length 28 [2020-01-16 19:04:26,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:26,121 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7043 transitions. [2020-01-16 19:04:26,121 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:26,121 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7043 transitions. [2020-01-16 19:04:26,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:26,123 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:26,124 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:26,124 INFO L426 AbstractCegarLoop]: === Iteration 373 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:26,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:26,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1596013220, now seen corresponding path program 365 times [2020-01-16 19:04:26,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:26,124 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359119183] [2020-01-16 19:04:26,124 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:26,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:26,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:26,630 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359119183] [2020-01-16 19:04:26,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:26,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:26,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090946493] [2020-01-16 19:04:26,630 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:26,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:26,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:26,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:26,631 INFO L87 Difference]: Start difference. First operand 1568 states and 7043 transitions. Second operand 11 states. [2020-01-16 19:04:26,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:26,873 INFO L93 Difference]: Finished difference Result 2910 states and 11628 transitions. [2020-01-16 19:04:26,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:26,873 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:26,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:26,880 INFO L225 Difference]: With dead ends: 2910 [2020-01-16 19:04:26,881 INFO L226 Difference]: Without dead ends: 2894 [2020-01-16 19:04:26,881 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:26,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2020-01-16 19:04:26,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 1574. [2020-01-16 19:04:26,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 19:04:26,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7054 transitions. [2020-01-16 19:04:26,953 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7054 transitions. Word has length 28 [2020-01-16 19:04:26,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:26,953 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7054 transitions. [2020-01-16 19:04:26,953 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:26,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7054 transitions. [2020-01-16 19:04:26,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:26,956 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:26,956 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:26,956 INFO L426 AbstractCegarLoop]: === Iteration 374 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:26,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:26,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1209549080, now seen corresponding path program 366 times [2020-01-16 19:04:26,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:26,956 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770870950] [2020-01-16 19:04:26,956 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:26,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:27,466 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 19:04:27,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:27,473 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770870950] [2020-01-16 19:04:27,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:27,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:27,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105690569] [2020-01-16 19:04:27,473 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:27,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:27,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:27,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:27,474 INFO L87 Difference]: Start difference. First operand 1574 states and 7054 transitions. Second operand 11 states. [2020-01-16 19:04:27,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:27,673 INFO L93 Difference]: Finished difference Result 2912 states and 11626 transitions. [2020-01-16 19:04:27,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:27,674 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:27,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:27,681 INFO L225 Difference]: With dead ends: 2912 [2020-01-16 19:04:27,681 INFO L226 Difference]: Without dead ends: 2883 [2020-01-16 19:04:27,681 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:27,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2883 states. [2020-01-16 19:04:27,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2883 to 1563. [2020-01-16 19:04:27,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 19:04:27,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7030 transitions. [2020-01-16 19:04:27,746 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7030 transitions. Word has length 28 [2020-01-16 19:04:27,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:27,746 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7030 transitions. [2020-01-16 19:04:27,747 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:27,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7030 transitions. [2020-01-16 19:04:27,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:27,749 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:27,749 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:27,749 INFO L426 AbstractCegarLoop]: === Iteration 375 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:27,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:27,749 INFO L82 PathProgramCache]: Analyzing trace with hash -192891122, now seen corresponding path program 367 times [2020-01-16 19:04:27,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:27,749 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474550366] [2020-01-16 19:04:27,749 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:27,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:28,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:28,286 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474550366] [2020-01-16 19:04:28,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:28,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:28,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101606547] [2020-01-16 19:04:28,286 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:28,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:28,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:28,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:28,287 INFO L87 Difference]: Start difference. First operand 1563 states and 7030 transitions. Second operand 11 states. [2020-01-16 19:04:28,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:28,470 INFO L93 Difference]: Finished difference Result 2897 states and 11602 transitions. [2020-01-16 19:04:28,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:28,470 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:28,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:28,478 INFO L225 Difference]: With dead ends: 2897 [2020-01-16 19:04:28,478 INFO L226 Difference]: Without dead ends: 2882 [2020-01-16 19:04:28,478 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:28,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2882 states. [2020-01-16 19:04:28,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2882 to 1572. [2020-01-16 19:04:28,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 19:04:28,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7054 transitions. [2020-01-16 19:04:28,544 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7054 transitions. Word has length 28 [2020-01-16 19:04:28,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:28,545 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7054 transitions. [2020-01-16 19:04:28,545 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:28,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7054 transitions. [2020-01-16 19:04:28,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:28,567 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:28,568 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:28,568 INFO L426 AbstractCegarLoop]: === Iteration 376 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:28,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:28,568 INFO L82 PathProgramCache]: Analyzing trace with hash 551811376, now seen corresponding path program 368 times [2020-01-16 19:04:28,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:28,568 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739858474] [2020-01-16 19:04:28,568 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:28,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:29,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:29,087 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739858474] [2020-01-16 19:04:29,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:29,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:29,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575288283] [2020-01-16 19:04:29,088 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:29,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:29,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:29,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:29,088 INFO L87 Difference]: Start difference. First operand 1572 states and 7054 transitions. Second operand 11 states. [2020-01-16 19:04:29,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:29,301 INFO L93 Difference]: Finished difference Result 2898 states and 11599 transitions. [2020-01-16 19:04:29,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:29,302 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:29,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:29,309 INFO L225 Difference]: With dead ends: 2898 [2020-01-16 19:04:29,310 INFO L226 Difference]: Without dead ends: 2877 [2020-01-16 19:04:29,310 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:29,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2877 states. [2020-01-16 19:04:29,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2877 to 1567. [2020-01-16 19:04:29,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 19:04:29,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7041 transitions. [2020-01-16 19:04:29,376 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7041 transitions. Word has length 28 [2020-01-16 19:04:29,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:29,376 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7041 transitions. [2020-01-16 19:04:29,376 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:29,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7041 transitions. [2020-01-16 19:04:29,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:29,379 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:29,379 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:29,379 INFO L426 AbstractCegarLoop]: === Iteration 377 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:29,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:29,379 INFO L82 PathProgramCache]: Analyzing trace with hash -728120924, now seen corresponding path program 369 times [2020-01-16 19:04:29,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:29,379 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911120474] [2020-01-16 19:04:29,379 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:29,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:29,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:29,913 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911120474] [2020-01-16 19:04:29,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:29,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:29,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338061197] [2020-01-16 19:04:29,913 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:29,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:29,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:29,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:29,913 INFO L87 Difference]: Start difference. First operand 1567 states and 7041 transitions. Second operand 11 states. [2020-01-16 19:04:30,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:30,130 INFO L93 Difference]: Finished difference Result 2894 states and 11591 transitions. [2020-01-16 19:04:30,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:30,130 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:30,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:30,137 INFO L225 Difference]: With dead ends: 2894 [2020-01-16 19:04:30,137 INFO L226 Difference]: Without dead ends: 2879 [2020-01-16 19:04:30,137 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:30,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2879 states. [2020-01-16 19:04:30,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2879 to 1571. [2020-01-16 19:04:30,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:04:30,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7048 transitions. [2020-01-16 19:04:30,203 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7048 transitions. Word has length 28 [2020-01-16 19:04:30,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:30,203 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7048 transitions. [2020-01-16 19:04:30,203 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:30,203 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7048 transitions. [2020-01-16 19:04:30,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:30,205 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:30,205 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:30,205 INFO L426 AbstractCegarLoop]: === Iteration 378 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:30,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:30,206 INFO L82 PathProgramCache]: Analyzing trace with hash -554873232, now seen corresponding path program 370 times [2020-01-16 19:04:30,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:30,206 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458804220] [2020-01-16 19:04:30,206 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:30,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:30,733 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 19:04:30,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:30,740 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458804220] [2020-01-16 19:04:30,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:30,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:30,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017522865] [2020-01-16 19:04:30,740 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:30,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:30,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:30,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:30,741 INFO L87 Difference]: Start difference. First operand 1571 states and 7048 transitions. Second operand 11 states. [2020-01-16 19:04:30,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:30,956 INFO L93 Difference]: Finished difference Result 2893 states and 11585 transitions. [2020-01-16 19:04:30,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:30,956 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:30,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:30,964 INFO L225 Difference]: With dead ends: 2893 [2020-01-16 19:04:30,964 INFO L226 Difference]: Without dead ends: 2875 [2020-01-16 19:04:30,964 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:31,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2875 states. [2020-01-16 19:04:31,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2875 to 1567. [2020-01-16 19:04:31,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 19:04:31,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7037 transitions. [2020-01-16 19:04:31,030 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7037 transitions. Word has length 28 [2020-01-16 19:04:31,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:31,030 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7037 transitions. [2020-01-16 19:04:31,030 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:31,030 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7037 transitions. [2020-01-16 19:04:31,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:31,033 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:31,033 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:31,033 INFO L426 AbstractCegarLoop]: === Iteration 379 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:31,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:31,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1627522532, now seen corresponding path program 371 times [2020-01-16 19:04:31,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:31,033 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887597699] [2020-01-16 19:04:31,033 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:31,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:31,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:31,558 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887597699] [2020-01-16 19:04:31,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:31,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:31,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339141803] [2020-01-16 19:04:31,558 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:31,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:31,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:31,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:31,559 INFO L87 Difference]: Start difference. First operand 1567 states and 7037 transitions. Second operand 11 states. [2020-01-16 19:04:31,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:31,766 INFO L93 Difference]: Finished difference Result 2896 states and 11591 transitions. [2020-01-16 19:04:31,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:31,767 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:31,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:31,773 INFO L225 Difference]: With dead ends: 2896 [2020-01-16 19:04:31,774 INFO L226 Difference]: Without dead ends: 2880 [2020-01-16 19:04:31,774 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:31,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2880 states. [2020-01-16 19:04:31,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2880 to 1571. [2020-01-16 19:04:31,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:04:31,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7044 transitions. [2020-01-16 19:04:31,841 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7044 transitions. Word has length 28 [2020-01-16 19:04:31,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:31,842 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7044 transitions. [2020-01-16 19:04:31,842 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:31,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7044 transitions. [2020-01-16 19:04:31,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:31,844 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:31,844 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:31,844 INFO L426 AbstractCegarLoop]: === Iteration 380 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:31,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:31,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1056067726, now seen corresponding path program 372 times [2020-01-16 19:04:31,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:31,845 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741311795] [2020-01-16 19:04:31,845 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:31,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:32,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:32,365 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741311795] [2020-01-16 19:04:32,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:32,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:32,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075189408] [2020-01-16 19:04:32,366 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:32,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:32,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:32,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:32,366 INFO L87 Difference]: Start difference. First operand 1571 states and 7044 transitions. Second operand 11 states. [2020-01-16 19:04:32,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:32,557 INFO L93 Difference]: Finished difference Result 2894 states and 11583 transitions. [2020-01-16 19:04:32,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:32,557 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:32,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:32,565 INFO L225 Difference]: With dead ends: 2894 [2020-01-16 19:04:32,565 INFO L226 Difference]: Without dead ends: 2872 [2020-01-16 19:04:32,565 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:32,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2872 states. [2020-01-16 19:04:32,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2872 to 1563. [2020-01-16 19:04:32,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 19:04:32,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7026 transitions. [2020-01-16 19:04:32,631 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7026 transitions. Word has length 28 [2020-01-16 19:04:32,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:32,631 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7026 transitions. [2020-01-16 19:04:32,631 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:32,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7026 transitions. [2020-01-16 19:04:32,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:32,633 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:32,633 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:32,633 INFO L426 AbstractCegarLoop]: === Iteration 381 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:32,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:32,634 INFO L82 PathProgramCache]: Analyzing trace with hash -171884914, now seen corresponding path program 373 times [2020-01-16 19:04:32,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:32,634 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019253896] [2020-01-16 19:04:32,634 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:32,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:33,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:33,149 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019253896] [2020-01-16 19:04:33,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:33,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:33,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962209264] [2020-01-16 19:04:33,150 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:33,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:33,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:33,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:33,150 INFO L87 Difference]: Start difference. First operand 1563 states and 7026 transitions. Second operand 11 states. [2020-01-16 19:04:33,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:33,334 INFO L93 Difference]: Finished difference Result 2901 states and 11606 transitions. [2020-01-16 19:04:33,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:33,334 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:33,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:33,341 INFO L225 Difference]: With dead ends: 2901 [2020-01-16 19:04:33,341 INFO L226 Difference]: Without dead ends: 2886 [2020-01-16 19:04:33,341 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:33,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2886 states. [2020-01-16 19:04:33,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2886 to 1572. [2020-01-16 19:04:33,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 19:04:33,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7050 transitions. [2020-01-16 19:04:33,408 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7050 transitions. Word has length 28 [2020-01-16 19:04:33,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:33,408 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7050 transitions. [2020-01-16 19:04:33,408 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:33,409 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7050 transitions. [2020-01-16 19:04:33,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:33,411 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:33,411 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:33,411 INFO L426 AbstractCegarLoop]: === Iteration 382 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:33,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:33,411 INFO L82 PathProgramCache]: Analyzing trace with hash 2062222580, now seen corresponding path program 374 times [2020-01-16 19:04:33,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:33,411 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882478039] [2020-01-16 19:04:33,411 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:33,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:33,937 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 19:04:33,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:33,944 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882478039] [2020-01-16 19:04:33,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:33,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:33,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132119093] [2020-01-16 19:04:33,945 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:33,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:33,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:33,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:33,945 INFO L87 Difference]: Start difference. First operand 1572 states and 7050 transitions. Second operand 11 states. [2020-01-16 19:04:34,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:34,168 INFO L93 Difference]: Finished difference Result 2904 states and 11607 transitions. [2020-01-16 19:04:34,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:34,169 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:34,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:34,176 INFO L225 Difference]: With dead ends: 2904 [2020-01-16 19:04:34,176 INFO L226 Difference]: Without dead ends: 2881 [2020-01-16 19:04:34,177 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:34,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2881 states. [2020-01-16 19:04:34,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2881 to 1567. [2020-01-16 19:04:34,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 19:04:34,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7037 transitions. [2020-01-16 19:04:34,242 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7037 transitions. Word has length 28 [2020-01-16 19:04:34,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:34,242 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7037 transitions. [2020-01-16 19:04:34,242 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:34,243 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7037 transitions. [2020-01-16 19:04:34,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:34,245 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:34,245 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:34,245 INFO L426 AbstractCegarLoop]: === Iteration 383 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:34,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:34,245 INFO L82 PathProgramCache]: Analyzing trace with hash 365970664, now seen corresponding path program 375 times [2020-01-16 19:04:34,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:34,246 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473101154] [2020-01-16 19:04:34,246 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:34,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:34,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:34,773 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473101154] [2020-01-16 19:04:34,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:34,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:34,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107365577] [2020-01-16 19:04:34,774 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:34,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:34,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:34,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:34,774 INFO L87 Difference]: Start difference. First operand 1567 states and 7037 transitions. Second operand 11 states. [2020-01-16 19:04:34,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:34,971 INFO L93 Difference]: Finished difference Result 2896 states and 11591 transitions. [2020-01-16 19:04:34,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:34,972 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:34,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:34,979 INFO L225 Difference]: With dead ends: 2896 [2020-01-16 19:04:34,979 INFO L226 Difference]: Without dead ends: 2881 [2020-01-16 19:04:34,979 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:35,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2881 states. [2020-01-16 19:04:35,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2881 to 1571. [2020-01-16 19:04:35,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:04:35,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7044 transitions. [2020-01-16 19:04:35,047 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7044 transitions. Word has length 28 [2020-01-16 19:04:35,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:35,047 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7044 transitions. [2020-01-16 19:04:35,047 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:35,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7044 transitions. [2020-01-16 19:04:35,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:35,051 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:35,051 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:35,051 INFO L426 AbstractCegarLoop]: === Iteration 384 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:35,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:35,051 INFO L82 PathProgramCache]: Analyzing trace with hash 539218356, now seen corresponding path program 376 times [2020-01-16 19:04:35,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:35,051 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862540600] [2020-01-16 19:04:35,052 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:35,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:35,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:35,585 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862540600] [2020-01-16 19:04:35,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:35,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:35,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893252353] [2020-01-16 19:04:35,586 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:35,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:35,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:35,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:35,586 INFO L87 Difference]: Start difference. First operand 1571 states and 7044 transitions. Second operand 11 states. [2020-01-16 19:04:35,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:35,779 INFO L93 Difference]: Finished difference Result 2895 states and 11585 transitions. [2020-01-16 19:04:35,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:35,780 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:35,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:35,787 INFO L225 Difference]: With dead ends: 2895 [2020-01-16 19:04:35,787 INFO L226 Difference]: Without dead ends: 2877 [2020-01-16 19:04:35,787 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:35,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2877 states. [2020-01-16 19:04:35,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2877 to 1567. [2020-01-16 19:04:35,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 19:04:35,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7033 transitions. [2020-01-16 19:04:35,857 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7033 transitions. Word has length 28 [2020-01-16 19:04:35,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:35,857 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7033 transitions. [2020-01-16 19:04:35,857 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:35,857 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7033 transitions. [2020-01-16 19:04:35,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:35,860 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:35,860 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:35,860 INFO L426 AbstractCegarLoop]: === Iteration 385 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:35,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:35,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1157033560, now seen corresponding path program 377 times [2020-01-16 19:04:35,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:35,860 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247603858] [2020-01-16 19:04:35,861 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:35,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:36,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:36,383 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247603858] [2020-01-16 19:04:36,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:36,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:36,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811397843] [2020-01-16 19:04:36,384 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:36,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:36,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:36,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:36,384 INFO L87 Difference]: Start difference. First operand 1567 states and 7033 transitions. Second operand 11 states. [2020-01-16 19:04:36,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:36,596 INFO L93 Difference]: Finished difference Result 2902 states and 11599 transitions. [2020-01-16 19:04:36,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:36,597 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:36,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:36,604 INFO L225 Difference]: With dead ends: 2902 [2020-01-16 19:04:36,604 INFO L226 Difference]: Without dead ends: 2884 [2020-01-16 19:04:36,605 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:36,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2884 states. [2020-01-16 19:04:36,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2884 to 1571. [2020-01-16 19:04:36,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:04:36,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7040 transitions. [2020-01-16 19:04:36,676 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7040 transitions. Word has length 28 [2020-01-16 19:04:36,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:36,676 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7040 transitions. [2020-01-16 19:04:36,676 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:36,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7040 transitions. [2020-01-16 19:04:36,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:36,679 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:36,679 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:36,679 INFO L426 AbstractCegarLoop]: === Iteration 386 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:36,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:36,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1077073934, now seen corresponding path program 378 times [2020-01-16 19:04:36,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:36,679 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294946374] [2020-01-16 19:04:36,679 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:36,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:37,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:37,201 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294946374] [2020-01-16 19:04:37,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:37,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:37,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746298911] [2020-01-16 19:04:37,202 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:37,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:37,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:37,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:37,202 INFO L87 Difference]: Start difference. First operand 1571 states and 7040 transitions. Second operand 11 states. [2020-01-16 19:04:37,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:37,449 INFO L93 Difference]: Finished difference Result 2898 states and 11587 transitions. [2020-01-16 19:04:37,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:37,449 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:37,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:37,457 INFO L225 Difference]: With dead ends: 2898 [2020-01-16 19:04:37,457 INFO L226 Difference]: Without dead ends: 2876 [2020-01-16 19:04:37,457 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:37,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2876 states. [2020-01-16 19:04:37,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2876 to 1563. [2020-01-16 19:04:37,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 19:04:37,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7022 transitions. [2020-01-16 19:04:37,528 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7022 transitions. Word has length 28 [2020-01-16 19:04:37,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:37,529 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7022 transitions. [2020-01-16 19:04:37,529 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:37,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7022 transitions. [2020-01-16 19:04:37,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:37,531 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:37,531 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:37,531 INFO L426 AbstractCegarLoop]: === Iteration 387 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:37,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:37,531 INFO L82 PathProgramCache]: Analyzing trace with hash 583320688, now seen corresponding path program 379 times [2020-01-16 19:04:37,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:37,532 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310804995] [2020-01-16 19:04:37,532 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:37,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:38,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:38,055 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310804995] [2020-01-16 19:04:38,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:38,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:38,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680724900] [2020-01-16 19:04:38,055 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:38,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:38,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:38,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:38,056 INFO L87 Difference]: Start difference. First operand 1563 states and 7022 transitions. Second operand 11 states. [2020-01-16 19:04:38,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:38,326 INFO L93 Difference]: Finished difference Result 2906 states and 11614 transitions. [2020-01-16 19:04:38,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:38,327 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:38,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:38,334 INFO L225 Difference]: With dead ends: 2906 [2020-01-16 19:04:38,334 INFO L226 Difference]: Without dead ends: 2890 [2020-01-16 19:04:38,335 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:38,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2890 states. [2020-01-16 19:04:38,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2890 to 1573. [2020-01-16 19:04:38,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:04:38,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7048 transitions. [2020-01-16 19:04:38,402 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7048 transitions. Word has length 28 [2020-01-16 19:04:38,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:38,402 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7048 transitions. [2020-01-16 19:04:38,402 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:38,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7048 transitions. [2020-01-16 19:04:38,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:38,404 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:38,404 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:38,404 INFO L426 AbstractCegarLoop]: === Iteration 388 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:38,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:38,405 INFO L82 PathProgramCache]: Analyzing trace with hash 2072725684, now seen corresponding path program 380 times [2020-01-16 19:04:38,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:38,405 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438825723] [2020-01-16 19:04:38,405 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:38,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:38,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:38,920 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438825723] [2020-01-16 19:04:38,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:38,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:38,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632800285] [2020-01-16 19:04:38,921 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:38,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:38,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:38,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:38,921 INFO L87 Difference]: Start difference. First operand 1573 states and 7048 transitions. Second operand 11 states. [2020-01-16 19:04:39,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:39,183 INFO L93 Difference]: Finished difference Result 2908 states and 11612 transitions. [2020-01-16 19:04:39,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:39,184 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:39,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:39,191 INFO L225 Difference]: With dead ends: 2908 [2020-01-16 19:04:39,191 INFO L226 Difference]: Without dead ends: 2884 [2020-01-16 19:04:39,191 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:39,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2884 states. [2020-01-16 19:04:39,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2884 to 1567. [2020-01-16 19:04:39,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 19:04:39,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7033 transitions. [2020-01-16 19:04:39,258 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7033 transitions. Word has length 28 [2020-01-16 19:04:39,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:39,259 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7033 transitions. [2020-01-16 19:04:39,259 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:39,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7033 transitions. [2020-01-16 19:04:39,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:39,261 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:39,261 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:39,261 INFO L426 AbstractCegarLoop]: === Iteration 389 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:39,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:39,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1121176266, now seen corresponding path program 381 times [2020-01-16 19:04:39,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:39,261 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93860013] [2020-01-16 19:04:39,262 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:39,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:39,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:39,790 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93860013] [2020-01-16 19:04:39,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:39,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:39,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297889353] [2020-01-16 19:04:39,790 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:39,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:39,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:39,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:39,791 INFO L87 Difference]: Start difference. First operand 1567 states and 7033 transitions. Second operand 11 states. [2020-01-16 19:04:39,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:39,989 INFO L93 Difference]: Finished difference Result 2900 states and 11596 transitions. [2020-01-16 19:04:39,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:39,990 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:39,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:39,997 INFO L225 Difference]: With dead ends: 2900 [2020-01-16 19:04:39,997 INFO L226 Difference]: Without dead ends: 2884 [2020-01-16 19:04:39,997 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:40,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2884 states. [2020-01-16 19:04:40,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2884 to 1571. [2020-01-16 19:04:40,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:04:40,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7040 transitions. [2020-01-16 19:04:40,064 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7040 transitions. Word has length 28 [2020-01-16 19:04:40,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:40,065 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7040 transitions. [2020-01-16 19:04:40,065 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:40,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7040 transitions. [2020-01-16 19:04:40,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:40,067 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:40,067 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:40,067 INFO L426 AbstractCegarLoop]: === Iteration 390 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:40,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:40,067 INFO L82 PathProgramCache]: Analyzing trace with hash 549721460, now seen corresponding path program 382 times [2020-01-16 19:04:40,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:40,067 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202296463] [2020-01-16 19:04:40,068 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:40,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:40,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:40,576 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202296463] [2020-01-16 19:04:40,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:40,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:40,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745071500] [2020-01-16 19:04:40,576 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:40,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:40,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:40,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:40,577 INFO L87 Difference]: Start difference. First operand 1571 states and 7040 transitions. Second operand 11 states. [2020-01-16 19:04:40,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:40,844 INFO L93 Difference]: Finished difference Result 2898 states and 11588 transitions. [2020-01-16 19:04:40,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:40,845 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:40,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:40,852 INFO L225 Difference]: With dead ends: 2898 [2020-01-16 19:04:40,852 INFO L226 Difference]: Without dead ends: 2880 [2020-01-16 19:04:40,853 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:40,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2880 states. [2020-01-16 19:04:40,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2880 to 1567. [2020-01-16 19:04:40,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 19:04:40,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7029 transitions. [2020-01-16 19:04:40,919 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7029 transitions. Word has length 28 [2020-01-16 19:04:40,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:40,919 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7029 transitions. [2020-01-16 19:04:40,920 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:40,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7029 transitions. [2020-01-16 19:04:40,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:40,922 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:40,922 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:40,922 INFO L426 AbstractCegarLoop]: === Iteration 391 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:40,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:40,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1537495882, now seen corresponding path program 383 times [2020-01-16 19:04:40,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:40,922 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950481747] [2020-01-16 19:04:40,923 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:40,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:41,432 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 19:04:41,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:41,439 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950481747] [2020-01-16 19:04:41,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:41,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:41,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142429519] [2020-01-16 19:04:41,439 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:41,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:41,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:41,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:41,440 INFO L87 Difference]: Start difference. First operand 1567 states and 7029 transitions. Second operand 11 states. [2020-01-16 19:04:41,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:41,706 INFO L93 Difference]: Finished difference Result 2904 states and 11600 transitions. [2020-01-16 19:04:41,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:41,706 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:41,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:41,714 INFO L225 Difference]: With dead ends: 2904 [2020-01-16 19:04:41,714 INFO L226 Difference]: Without dead ends: 2886 [2020-01-16 19:04:41,715 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:41,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2886 states. [2020-01-16 19:04:41,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2886 to 1571. [2020-01-16 19:04:41,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:04:41,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7036 transitions. [2020-01-16 19:04:41,780 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7036 transitions. Word has length 28 [2020-01-16 19:04:41,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:41,780 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7036 transitions. [2020-01-16 19:04:41,781 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:41,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7036 transitions. [2020-01-16 19:04:41,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:41,783 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:41,783 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:41,783 INFO L426 AbstractCegarLoop]: === Iteration 392 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:41,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:41,783 INFO L82 PathProgramCache]: Analyzing trace with hash -523363920, now seen corresponding path program 384 times [2020-01-16 19:04:41,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:41,783 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272779167] [2020-01-16 19:04:41,783 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:41,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:42,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:42,295 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272779167] [2020-01-16 19:04:42,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:42,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:42,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729505883] [2020-01-16 19:04:42,295 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:42,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:42,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:42,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:42,295 INFO L87 Difference]: Start difference. First operand 1571 states and 7036 transitions. Second operand 11 states. [2020-01-16 19:04:42,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:42,498 INFO L93 Difference]: Finished difference Result 2900 states and 11588 transitions. [2020-01-16 19:04:42,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:42,499 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:42,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:42,505 INFO L225 Difference]: With dead ends: 2900 [2020-01-16 19:04:42,506 INFO L226 Difference]: Without dead ends: 2874 [2020-01-16 19:04:42,506 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:42,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2874 states. [2020-01-16 19:04:42,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2874 to 1559. [2020-01-16 19:04:42,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1559 states. [2020-01-16 19:04:42,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 7011 transitions. [2020-01-16 19:04:42,576 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 7011 transitions. Word has length 28 [2020-01-16 19:04:42,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:42,576 INFO L478 AbstractCegarLoop]: Abstraction has 1559 states and 7011 transitions. [2020-01-16 19:04:42,576 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:42,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 7011 transitions. [2020-01-16 19:04:42,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:42,579 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:42,579 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:42,579 INFO L426 AbstractCegarLoop]: === Iteration 393 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:42,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:42,579 INFO L82 PathProgramCache]: Analyzing trace with hash -129443996, now seen corresponding path program 385 times [2020-01-16 19:04:42,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:42,580 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359663577] [2020-01-16 19:04:42,580 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:42,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:43,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:43,120 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359663577] [2020-01-16 19:04:43,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:43,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:43,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330739789] [2020-01-16 19:04:43,120 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:43,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:43,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:43,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:43,121 INFO L87 Difference]: Start difference. First operand 1559 states and 7011 transitions. Second operand 11 states. [2020-01-16 19:04:43,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:43,335 INFO L93 Difference]: Finished difference Result 2919 states and 11668 transitions. [2020-01-16 19:04:43,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:43,335 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:43,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:43,342 INFO L225 Difference]: With dead ends: 2919 [2020-01-16 19:04:43,342 INFO L226 Difference]: Without dead ends: 2904 [2020-01-16 19:04:43,342 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:43,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2904 states. [2020-01-16 19:04:43,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2904 to 1574. [2020-01-16 19:04:43,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 19:04:43,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7063 transitions. [2020-01-16 19:04:43,408 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7063 transitions. Word has length 28 [2020-01-16 19:04:43,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:43,408 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7063 transitions. [2020-01-16 19:04:43,409 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:43,409 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7063 transitions. [2020-01-16 19:04:43,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:43,411 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:43,411 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:43,411 INFO L426 AbstractCegarLoop]: === Iteration 394 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:43,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:43,411 INFO L82 PathProgramCache]: Analyzing trace with hash 615258502, now seen corresponding path program 386 times [2020-01-16 19:04:43,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:43,411 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378556826] [2020-01-16 19:04:43,411 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:43,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:43,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:43,936 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378556826] [2020-01-16 19:04:43,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:43,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:43,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499782168] [2020-01-16 19:04:43,936 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:43,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:43,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:43,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:43,937 INFO L87 Difference]: Start difference. First operand 1574 states and 7063 transitions. Second operand 11 states. [2020-01-16 19:04:44,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:44,148 INFO L93 Difference]: Finished difference Result 2920 states and 11665 transitions. [2020-01-16 19:04:44,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:44,149 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:44,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:44,156 INFO L225 Difference]: With dead ends: 2920 [2020-01-16 19:04:44,156 INFO L226 Difference]: Without dead ends: 2899 [2020-01-16 19:04:44,157 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:44,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-01-16 19:04:44,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1569. [2020-01-16 19:04:44,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 19:04:44,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7049 transitions. [2020-01-16 19:04:44,222 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7049 transitions. Word has length 28 [2020-01-16 19:04:44,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:44,222 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7049 transitions. [2020-01-16 19:04:44,222 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:44,222 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7049 transitions. [2020-01-16 19:04:44,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:44,225 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:44,225 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:44,225 INFO L426 AbstractCegarLoop]: === Iteration 395 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:44,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:44,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1202529376, now seen corresponding path program 387 times [2020-01-16 19:04:44,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:44,225 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870430737] [2020-01-16 19:04:44,225 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:44,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:44,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:44,738 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870430737] [2020-01-16 19:04:44,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:44,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:44,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248849629] [2020-01-16 19:04:44,738 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:44,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:44,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:44,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:44,739 INFO L87 Difference]: Start difference. First operand 1569 states and 7049 transitions. Second operand 11 states. [2020-01-16 19:04:45,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:45,008 INFO L93 Difference]: Finished difference Result 2921 states and 11667 transitions. [2020-01-16 19:04:45,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:45,009 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:45,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:45,038 INFO L225 Difference]: With dead ends: 2921 [2020-01-16 19:04:45,038 INFO L226 Difference]: Without dead ends: 2906 [2020-01-16 19:04:45,038 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:45,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2906 states. [2020-01-16 19:04:45,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2906 to 1574. [2020-01-16 19:04:45,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 19:04:45,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7058 transitions. [2020-01-16 19:04:45,102 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7058 transitions. Word has length 28 [2020-01-16 19:04:45,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:45,102 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7058 transitions. [2020-01-16 19:04:45,102 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:45,102 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7058 transitions. [2020-01-16 19:04:45,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:45,105 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:45,105 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:45,105 INFO L426 AbstractCegarLoop]: === Iteration 396 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:45,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:45,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1031578118, now seen corresponding path program 388 times [2020-01-16 19:04:45,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:45,105 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206751071] [2020-01-16 19:04:45,105 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:45,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:45,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:45,634 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206751071] [2020-01-16 19:04:45,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:45,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:45,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184015719] [2020-01-16 19:04:45,634 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:45,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:45,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:45,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:45,635 INFO L87 Difference]: Start difference. First operand 1574 states and 7058 transitions. Second operand 11 states. [2020-01-16 19:04:45,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:45,896 INFO L93 Difference]: Finished difference Result 2924 states and 11668 transitions. [2020-01-16 19:04:45,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:45,897 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:45,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:45,904 INFO L225 Difference]: With dead ends: 2924 [2020-01-16 19:04:45,904 INFO L226 Difference]: Without dead ends: 2901 [2020-01-16 19:04:45,904 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:45,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2901 states. [2020-01-16 19:04:45,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2901 to 1569. [2020-01-16 19:04:45,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 19:04:45,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7044 transitions. [2020-01-16 19:04:45,970 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7044 transitions. Word has length 28 [2020-01-16 19:04:45,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:45,970 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7044 transitions. [2020-01-16 19:04:45,970 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:45,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7044 transitions. [2020-01-16 19:04:45,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:45,972 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:45,972 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:45,972 INFO L426 AbstractCegarLoop]: === Iteration 397 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:45,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:45,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1153114080, now seen corresponding path program 389 times [2020-01-16 19:04:45,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:45,973 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852158476] [2020-01-16 19:04:45,973 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:45,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:46,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:46,445 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852158476] [2020-01-16 19:04:46,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:46,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:46,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772255023] [2020-01-16 19:04:46,446 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:46,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:46,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:46,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:46,446 INFO L87 Difference]: Start difference. First operand 1569 states and 7044 transitions. Second operand 11 states. [2020-01-16 19:04:46,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:46,607 INFO L93 Difference]: Finished difference Result 2924 states and 11669 transitions. [2020-01-16 19:04:46,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:46,608 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:46,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:46,615 INFO L225 Difference]: With dead ends: 2924 [2020-01-16 19:04:46,615 INFO L226 Difference]: Without dead ends: 2908 [2020-01-16 19:04:46,615 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:46,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2020-01-16 19:04:46,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 1575. [2020-01-16 19:04:46,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:04:46,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7055 transitions. [2020-01-16 19:04:46,682 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7055 transitions. Word has length 28 [2020-01-16 19:04:46,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:46,682 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7055 transitions. [2020-01-16 19:04:46,682 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:46,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7055 transitions. [2020-01-16 19:04:46,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:46,684 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:46,684 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:46,684 INFO L426 AbstractCegarLoop]: === Iteration 398 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:46,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:46,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1652448220, now seen corresponding path program 390 times [2020-01-16 19:04:46,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:46,685 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945696756] [2020-01-16 19:04:46,685 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:46,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:47,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:47,203 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945696756] [2020-01-16 19:04:47,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:47,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:47,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830655934] [2020-01-16 19:04:47,204 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:47,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:47,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:47,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:47,204 INFO L87 Difference]: Start difference. First operand 1575 states and 7055 transitions. Second operand 11 states. [2020-01-16 19:04:47,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:47,379 INFO L93 Difference]: Finished difference Result 2926 states and 11667 transitions. [2020-01-16 19:04:47,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:47,379 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:47,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:47,387 INFO L225 Difference]: With dead ends: 2926 [2020-01-16 19:04:47,387 INFO L226 Difference]: Without dead ends: 2897 [2020-01-16 19:04:47,387 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:47,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2897 states. [2020-01-16 19:04:47,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2897 to 1564. [2020-01-16 19:04:47,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1564 states. [2020-01-16 19:04:47,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 7030 transitions. [2020-01-16 19:04:47,454 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 7030 transitions. Word has length 28 [2020-01-16 19:04:47,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:47,454 INFO L478 AbstractCegarLoop]: Abstraction has 1564 states and 7030 transitions. [2020-01-16 19:04:47,455 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:47,455 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 7030 transitions. [2020-01-16 19:04:47,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:47,457 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:47,457 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:47,457 INFO L426 AbstractCegarLoop]: === Iteration 399 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:47,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:47,457 INFO L82 PathProgramCache]: Analyzing trace with hash 458301326, now seen corresponding path program 391 times [2020-01-16 19:04:47,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:47,457 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500773253] [2020-01-16 19:04:47,458 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:47,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:47,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:47,999 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500773253] [2020-01-16 19:04:47,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:47,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:47,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867696089] [2020-01-16 19:04:47,999 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:47,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:48,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:48,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:48,000 INFO L87 Difference]: Start difference. First operand 1564 states and 7030 transitions. Second operand 11 states. [2020-01-16 19:04:48,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:48,169 INFO L93 Difference]: Finished difference Result 2918 states and 11661 transitions. [2020-01-16 19:04:48,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:48,170 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:48,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:48,177 INFO L225 Difference]: With dead ends: 2918 [2020-01-16 19:04:48,177 INFO L226 Difference]: Without dead ends: 2903 [2020-01-16 19:04:48,177 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:48,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2903 states. [2020-01-16 19:04:48,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2903 to 1574. [2020-01-16 19:04:48,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 19:04:48,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7058 transitions. [2020-01-16 19:04:48,243 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7058 transitions. Word has length 28 [2020-01-16 19:04:48,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:48,244 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7058 transitions. [2020-01-16 19:04:48,244 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:48,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7058 transitions. [2020-01-16 19:04:48,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:48,246 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:48,246 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:48,246 INFO L426 AbstractCegarLoop]: === Iteration 400 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:48,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:48,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1203003824, now seen corresponding path program 392 times [2020-01-16 19:04:48,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:48,247 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559752268] [2020-01-16 19:04:48,247 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:48,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:48,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:48,786 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559752268] [2020-01-16 19:04:48,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:48,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:48,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732699867] [2020-01-16 19:04:48,786 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:48,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:48,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:48,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:48,787 INFO L87 Difference]: Start difference. First operand 1574 states and 7058 transitions. Second operand 11 states. [2020-01-16 19:04:48,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:48,963 INFO L93 Difference]: Finished difference Result 2919 states and 11658 transitions. [2020-01-16 19:04:48,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:48,963 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:48,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:48,970 INFO L225 Difference]: With dead ends: 2919 [2020-01-16 19:04:48,970 INFO L226 Difference]: Without dead ends: 2898 [2020-01-16 19:04:48,970 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:49,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2898 states. [2020-01-16 19:04:49,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2898 to 1569. [2020-01-16 19:04:49,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 19:04:49,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7044 transitions. [2020-01-16 19:04:49,038 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7044 transitions. Word has length 28 [2020-01-16 19:04:49,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:49,038 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7044 transitions. [2020-01-16 19:04:49,038 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:49,038 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7044 transitions. [2020-01-16 19:04:49,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:49,040 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:49,040 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:49,041 INFO L426 AbstractCegarLoop]: === Iteration 401 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:49,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:49,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1150013856, now seen corresponding path program 393 times [2020-01-16 19:04:49,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:49,041 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312171122] [2020-01-16 19:04:49,041 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:49,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:49,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:49,574 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312171122] [2020-01-16 19:04:49,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:49,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:49,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205087189] [2020-01-16 19:04:49,574 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:49,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:49,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:49,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:49,575 INFO L87 Difference]: Start difference. First operand 1569 states and 7044 transitions. Second operand 11 states. [2020-01-16 19:04:49,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:49,750 INFO L93 Difference]: Finished difference Result 2919 states and 11658 transitions. [2020-01-16 19:04:49,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:49,751 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:49,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:49,758 INFO L225 Difference]: With dead ends: 2919 [2020-01-16 19:04:49,758 INFO L226 Difference]: Without dead ends: 2904 [2020-01-16 19:04:49,758 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:49,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2904 states. [2020-01-16 19:04:49,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2904 to 1574. [2020-01-16 19:04:49,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 19:04:49,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7053 transitions. [2020-01-16 19:04:49,823 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7053 transitions. Word has length 28 [2020-01-16 19:04:49,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:49,823 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7053 transitions. [2020-01-16 19:04:49,823 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:49,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7053 transitions. [2020-01-16 19:04:49,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:49,826 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:49,826 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:49,826 INFO L426 AbstractCegarLoop]: === Iteration 402 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:49,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:49,826 INFO L82 PathProgramCache]: Analyzing trace with hash 512638832, now seen corresponding path program 394 times [2020-01-16 19:04:49,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:49,826 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267246576] [2020-01-16 19:04:49,826 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:49,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:50,372 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 19:04:50,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:50,379 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267246576] [2020-01-16 19:04:50,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:50,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:50,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966403162] [2020-01-16 19:04:50,380 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:50,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:50,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:50,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:50,380 INFO L87 Difference]: Start difference. First operand 1574 states and 7053 transitions. Second operand 11 states. [2020-01-16 19:04:50,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:50,565 INFO L93 Difference]: Finished difference Result 2921 states and 11657 transitions. [2020-01-16 19:04:50,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:50,565 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:50,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:50,573 INFO L225 Difference]: With dead ends: 2921 [2020-01-16 19:04:50,573 INFO L226 Difference]: Without dead ends: 2899 [2020-01-16 19:04:50,573 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:50,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-01-16 19:04:50,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1569. [2020-01-16 19:04:50,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 19:04:50,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7039 transitions. [2020-01-16 19:04:50,639 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7039 transitions. Word has length 28 [2020-01-16 19:04:50,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:50,639 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7039 transitions. [2020-01-16 19:04:50,639 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:50,639 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7039 transitions. [2020-01-16 19:04:50,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:50,641 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:50,641 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:50,642 INFO L426 AbstractCegarLoop]: === Iteration 403 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:50,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:50,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1205629600, now seen corresponding path program 395 times [2020-01-16 19:04:50,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:50,642 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106859131] [2020-01-16 19:04:50,642 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:51,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:51,173 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106859131] [2020-01-16 19:04:51,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:51,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:51,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446137490] [2020-01-16 19:04:51,173 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:51,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:51,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:51,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:51,174 INFO L87 Difference]: Start difference. First operand 1569 states and 7039 transitions. Second operand 11 states. [2020-01-16 19:04:51,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:51,341 INFO L93 Difference]: Finished difference Result 2922 states and 11660 transitions. [2020-01-16 19:04:51,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:51,342 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:51,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:51,349 INFO L225 Difference]: With dead ends: 2922 [2020-01-16 19:04:51,349 INFO L226 Difference]: Without dead ends: 2906 [2020-01-16 19:04:51,349 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:51,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2906 states. [2020-01-16 19:04:51,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2906 to 1575. [2020-01-16 19:04:51,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:04:51,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7050 transitions. [2020-01-16 19:04:51,417 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7050 transitions. Word has length 28 [2020-01-16 19:04:51,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:51,417 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7050 transitions. [2020-01-16 19:04:51,417 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:51,417 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7050 transitions. [2020-01-16 19:04:51,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:51,419 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:51,419 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:51,420 INFO L426 AbstractCegarLoop]: === Iteration 404 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:51,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:51,420 INFO L82 PathProgramCache]: Analyzing trace with hash 2123579790, now seen corresponding path program 396 times [2020-01-16 19:04:51,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:51,420 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608885394] [2020-01-16 19:04:51,420 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:51,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:51,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:51,949 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608885394] [2020-01-16 19:04:51,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:51,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:51,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903028536] [2020-01-16 19:04:51,950 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:51,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:51,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:51,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:51,950 INFO L87 Difference]: Start difference. First operand 1575 states and 7050 transitions. Second operand 11 states. [2020-01-16 19:04:52,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:52,153 INFO L93 Difference]: Finished difference Result 2923 states and 11656 transitions. [2020-01-16 19:04:52,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:52,153 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:52,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:52,160 INFO L225 Difference]: With dead ends: 2923 [2020-01-16 19:04:52,161 INFO L226 Difference]: Without dead ends: 2895 [2020-01-16 19:04:52,161 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:52,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2895 states. [2020-01-16 19:04:52,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2895 to 1564. [2020-01-16 19:04:52,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1564 states. [2020-01-16 19:04:52,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 7025 transitions. [2020-01-16 19:04:52,226 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 7025 transitions. Word has length 28 [2020-01-16 19:04:52,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:52,226 INFO L478 AbstractCegarLoop]: Abstraction has 1564 states and 7025 transitions. [2020-01-16 19:04:52,226 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:52,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 7025 transitions. [2020-01-16 19:04:52,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:52,228 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:52,229 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:52,229 INFO L426 AbstractCegarLoop]: === Iteration 405 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:52,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:52,229 INFO L82 PathProgramCache]: Analyzing trace with hash 479307534, now seen corresponding path program 397 times [2020-01-16 19:04:52,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:52,229 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873495216] [2020-01-16 19:04:52,229 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:52,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:52,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:52,758 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873495216] [2020-01-16 19:04:52,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:52,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:52,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922319904] [2020-01-16 19:04:52,758 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:52,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:52,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:52,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:52,759 INFO L87 Difference]: Start difference. First operand 1564 states and 7025 transitions. Second operand 11 states. [2020-01-16 19:04:52,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:52,954 INFO L93 Difference]: Finished difference Result 2923 states and 11667 transitions. [2020-01-16 19:04:52,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:52,954 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:52,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:52,962 INFO L225 Difference]: With dead ends: 2923 [2020-01-16 19:04:52,962 INFO L226 Difference]: Without dead ends: 2908 [2020-01-16 19:04:52,962 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:53,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2020-01-16 19:04:53,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 1574. [2020-01-16 19:04:53,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 19:04:53,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7053 transitions. [2020-01-16 19:04:53,030 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7053 transitions. Word has length 28 [2020-01-16 19:04:53,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:53,030 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7053 transitions. [2020-01-16 19:04:53,030 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:53,031 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7053 transitions. [2020-01-16 19:04:53,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:53,033 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:53,033 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:53,033 INFO L426 AbstractCegarLoop]: === Iteration 406 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:53,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:53,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1581552268, now seen corresponding path program 398 times [2020-01-16 19:04:53,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:53,033 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007507841] [2020-01-16 19:04:53,033 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:53,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:53,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:53,546 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007507841] [2020-01-16 19:04:53,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:53,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:53,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417701330] [2020-01-16 19:04:53,547 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:53,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:53,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:53,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:53,547 INFO L87 Difference]: Start difference. First operand 1574 states and 7053 transitions. Second operand 11 states. [2020-01-16 19:04:53,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:53,720 INFO L93 Difference]: Finished difference Result 2926 states and 11668 transitions. [2020-01-16 19:04:53,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:53,721 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:53,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:53,728 INFO L225 Difference]: With dead ends: 2926 [2020-01-16 19:04:53,728 INFO L226 Difference]: Without dead ends: 2903 [2020-01-16 19:04:53,728 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:53,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2903 states. [2020-01-16 19:04:53,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2903 to 1569. [2020-01-16 19:04:53,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 19:04:53,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7039 transitions. [2020-01-16 19:04:53,796 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7039 transitions. Word has length 28 [2020-01-16 19:04:53,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:53,796 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7039 transitions. [2020-01-16 19:04:53,796 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:53,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7039 transitions. [2020-01-16 19:04:53,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:53,798 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:53,798 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:53,799 INFO L426 AbstractCegarLoop]: === Iteration 407 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:53,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:53,799 INFO L82 PathProgramCache]: Analyzing trace with hash -55922268, now seen corresponding path program 399 times [2020-01-16 19:04:53,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:53,799 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704179495] [2020-01-16 19:04:53,799 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:53,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:54,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:54,323 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704179495] [2020-01-16 19:04:54,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:54,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:54,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866127679] [2020-01-16 19:04:54,323 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:54,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:54,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:54,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:54,324 INFO L87 Difference]: Start difference. First operand 1569 states and 7039 transitions. Second operand 11 states. [2020-01-16 19:04:54,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:54,508 INFO L93 Difference]: Finished difference Result 2922 states and 11660 transitions. [2020-01-16 19:04:54,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:54,509 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:54,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:54,516 INFO L225 Difference]: With dead ends: 2922 [2020-01-16 19:04:54,516 INFO L226 Difference]: Without dead ends: 2907 [2020-01-16 19:04:54,516 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:54,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2907 states. [2020-01-16 19:04:54,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2907 to 1574. [2020-01-16 19:04:54,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 19:04:54,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7048 transitions. [2020-01-16 19:04:54,583 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7048 transitions. Word has length 28 [2020-01-16 19:04:54,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:54,584 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7048 transitions. [2020-01-16 19:04:54,584 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:54,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7048 transitions. [2020-01-16 19:04:54,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:54,586 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:54,586 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:54,586 INFO L426 AbstractCegarLoop]: === Iteration 408 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:54,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:54,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1606730420, now seen corresponding path program 400 times [2020-01-16 19:04:54,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:54,587 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013580257] [2020-01-16 19:04:54,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:54,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:55,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:55,117 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013580257] [2020-01-16 19:04:55,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:55,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:55,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095392508] [2020-01-16 19:04:55,117 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:55,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:55,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:55,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:55,118 INFO L87 Difference]: Start difference. First operand 1574 states and 7048 transitions. Second operand 11 states. [2020-01-16 19:04:55,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:55,305 INFO L93 Difference]: Finished difference Result 2924 states and 11659 transitions. [2020-01-16 19:04:55,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:55,305 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:55,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:55,312 INFO L225 Difference]: With dead ends: 2924 [2020-01-16 19:04:55,312 INFO L226 Difference]: Without dead ends: 2902 [2020-01-16 19:04:55,312 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:55,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2902 states. [2020-01-16 19:04:55,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2902 to 1569. [2020-01-16 19:04:55,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 19:04:55,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7034 transitions. [2020-01-16 19:04:55,379 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7034 transitions. Word has length 28 [2020-01-16 19:04:55,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:55,380 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7034 transitions. [2020-01-16 19:04:55,380 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:55,380 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7034 transitions. [2020-01-16 19:04:55,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:55,382 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:55,382 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:55,382 INFO L426 AbstractCegarLoop]: === Iteration 409 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:55,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:55,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1578926492, now seen corresponding path program 401 times [2020-01-16 19:04:55,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:55,383 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279539287] [2020-01-16 19:04:55,383 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:55,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:55,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:55,944 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279539287] [2020-01-16 19:04:55,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:55,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:55,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688335083] [2020-01-16 19:04:55,944 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:55,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:55,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:55,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:55,945 INFO L87 Difference]: Start difference. First operand 1569 states and 7034 transitions. Second operand 11 states. [2020-01-16 19:04:56,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:56,158 INFO L93 Difference]: Finished difference Result 2930 states and 11673 transitions. [2020-01-16 19:04:56,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:56,159 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:56,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:56,166 INFO L225 Difference]: With dead ends: 2930 [2020-01-16 19:04:56,166 INFO L226 Difference]: Without dead ends: 2912 [2020-01-16 19:04:56,166 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:56,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2912 states. [2020-01-16 19:04:56,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2912 to 1576. [2020-01-16 19:04:56,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 19:04:56,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7047 transitions. [2020-01-16 19:04:56,232 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7047 transitions. Word has length 28 [2020-01-16 19:04:56,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:56,232 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7047 transitions. [2020-01-16 19:04:56,233 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:56,233 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7047 transitions. [2020-01-16 19:04:56,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:56,235 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:56,235 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:56,235 INFO L426 AbstractCegarLoop]: === Iteration 410 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:56,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:56,235 INFO L82 PathProgramCache]: Analyzing trace with hash 2144585998, now seen corresponding path program 402 times [2020-01-16 19:04:56,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:56,235 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219661217] [2020-01-16 19:04:56,235 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:56,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:56,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:56,765 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219661217] [2020-01-16 19:04:56,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:56,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:56,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57056682] [2020-01-16 19:04:56,765 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:56,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:56,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:56,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:56,766 INFO L87 Difference]: Start difference. First operand 1576 states and 7047 transitions. Second operand 11 states. [2020-01-16 19:04:56,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:56,950 INFO L93 Difference]: Finished difference Result 2929 states and 11664 transitions. [2020-01-16 19:04:56,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:56,950 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:56,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:56,958 INFO L225 Difference]: With dead ends: 2929 [2020-01-16 19:04:56,958 INFO L226 Difference]: Without dead ends: 2900 [2020-01-16 19:04:56,958 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:57,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2900 states. [2020-01-16 19:04:57,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2900 to 1564. [2020-01-16 19:04:57,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1564 states. [2020-01-16 19:04:57,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 7020 transitions. [2020-01-16 19:04:57,024 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 7020 transitions. Word has length 28 [2020-01-16 19:04:57,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:57,024 INFO L478 AbstractCegarLoop]: Abstraction has 1564 states and 7020 transitions. [2020-01-16 19:04:57,024 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:57,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 7020 transitions. [2020-01-16 19:04:57,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:57,026 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:57,026 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:57,026 INFO L426 AbstractCegarLoop]: === Iteration 411 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:57,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:57,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1234513136, now seen corresponding path program 403 times [2020-01-16 19:04:57,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:57,027 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185021122] [2020-01-16 19:04:57,027 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:57,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:57,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:57,570 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185021122] [2020-01-16 19:04:57,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:57,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:57,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578917264] [2020-01-16 19:04:57,570 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:57,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:57,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:57,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:57,571 INFO L87 Difference]: Start difference. First operand 1564 states and 7020 transitions. Second operand 11 states. [2020-01-16 19:04:57,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:57,757 INFO L93 Difference]: Finished difference Result 2930 states and 11681 transitions. [2020-01-16 19:04:57,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:57,758 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:57,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:57,765 INFO L225 Difference]: With dead ends: 2930 [2020-01-16 19:04:57,765 INFO L226 Difference]: Without dead ends: 2914 [2020-01-16 19:04:57,765 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:57,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2914 states. [2020-01-16 19:04:57,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2914 to 1576. [2020-01-16 19:04:57,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 19:04:57,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7054 transitions. [2020-01-16 19:04:57,833 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7054 transitions. Word has length 28 [2020-01-16 19:04:57,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:57,833 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7054 transitions. [2020-01-16 19:04:57,833 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:57,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7054 transitions. [2020-01-16 19:04:57,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:57,836 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:57,836 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:57,836 INFO L426 AbstractCegarLoop]: === Iteration 412 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:57,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:57,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1571049164, now seen corresponding path program 404 times [2020-01-16 19:04:57,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:57,836 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308442474] [2020-01-16 19:04:57,836 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:57,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:58,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:58,353 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308442474] [2020-01-16 19:04:58,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:58,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:58,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009754573] [2020-01-16 19:04:58,354 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:58,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:58,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:58,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:58,354 INFO L87 Difference]: Start difference. First operand 1576 states and 7054 transitions. Second operand 11 states. [2020-01-16 19:04:58,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:58,543 INFO L93 Difference]: Finished difference Result 2932 states and 11679 transitions. [2020-01-16 19:04:58,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:58,543 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:58,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:58,550 INFO L225 Difference]: With dead ends: 2932 [2020-01-16 19:04:58,550 INFO L226 Difference]: Without dead ends: 2908 [2020-01-16 19:04:58,551 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:58,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2020-01-16 19:04:58,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 1570. [2020-01-16 19:04:58,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 19:04:58,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7037 transitions. [2020-01-16 19:04:58,616 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7037 transitions. Word has length 28 [2020-01-16 19:04:58,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:58,616 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7037 transitions. [2020-01-16 19:04:58,616 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:58,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7037 transitions. [2020-01-16 19:04:58,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:58,618 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:58,618 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:58,619 INFO L426 AbstractCegarLoop]: === Iteration 413 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:58,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:58,619 INFO L82 PathProgramCache]: Analyzing trace with hash 699283334, now seen corresponding path program 405 times [2020-01-16 19:04:58,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:58,619 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38675102] [2020-01-16 19:04:58,619 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:58,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:59,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:59,148 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38675102] [2020-01-16 19:04:59,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:59,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:59,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693689631] [2020-01-16 19:04:59,148 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:59,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:59,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:59,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:59,148 INFO L87 Difference]: Start difference. First operand 1570 states and 7037 transitions. Second operand 11 states. [2020-01-16 19:04:59,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:04:59,319 INFO L93 Difference]: Finished difference Result 2929 states and 11673 transitions. [2020-01-16 19:04:59,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:04:59,319 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:04:59,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:04:59,327 INFO L225 Difference]: With dead ends: 2929 [2020-01-16 19:04:59,327 INFO L226 Difference]: Without dead ends: 2913 [2020-01-16 19:04:59,327 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:04:59,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2913 states. [2020-01-16 19:04:59,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2913 to 1576. [2020-01-16 19:04:59,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 19:04:59,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7048 transitions. [2020-01-16 19:04:59,394 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7048 transitions. Word has length 28 [2020-01-16 19:04:59,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:04:59,394 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7048 transitions. [2020-01-16 19:04:59,394 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:04:59,394 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7048 transitions. [2020-01-16 19:04:59,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:04:59,397 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:04:59,397 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:04:59,397 INFO L426 AbstractCegarLoop]: === Iteration 414 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:04:59,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:04:59,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1617233524, now seen corresponding path program 406 times [2020-01-16 19:04:59,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:04:59,397 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989864380] [2020-01-16 19:04:59,397 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:04:59,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:04:59,929 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 32 [2020-01-16 19:04:59,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:04:59,936 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989864380] [2020-01-16 19:04:59,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:04:59,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:04:59,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012443919] [2020-01-16 19:04:59,936 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:04:59,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:04:59,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:04:59,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:04:59,937 INFO L87 Difference]: Start difference. First operand 1576 states and 7048 transitions. Second operand 11 states. [2020-01-16 19:05:00,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:00,117 INFO L93 Difference]: Finished difference Result 2930 states and 11669 transitions. [2020-01-16 19:05:00,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:00,118 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:00,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:00,125 INFO L225 Difference]: With dead ends: 2930 [2020-01-16 19:05:00,125 INFO L226 Difference]: Without dead ends: 2907 [2020-01-16 19:05:00,126 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:00,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2907 states. [2020-01-16 19:05:00,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2907 to 1570. [2020-01-16 19:05:00,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 19:05:00,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7031 transitions. [2020-01-16 19:05:00,191 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7031 transitions. Word has length 28 [2020-01-16 19:05:00,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:00,191 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7031 transitions. [2020-01-16 19:05:00,192 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:00,192 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7031 transitions. [2020-01-16 19:05:00,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:00,194 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:00,194 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:00,194 INFO L426 AbstractCegarLoop]: === Iteration 415 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:00,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:00,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1115602950, now seen corresponding path program 407 times [2020-01-16 19:05:00,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:00,194 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530549848] [2020-01-16 19:05:00,194 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:00,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:00,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:00,729 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530549848] [2020-01-16 19:05:00,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:00,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:00,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570456382] [2020-01-16 19:05:00,729 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:00,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:00,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:00,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:00,730 INFO L87 Difference]: Start difference. First operand 1570 states and 7031 transitions. Second operand 11 states. [2020-01-16 19:05:00,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:00,911 INFO L93 Difference]: Finished difference Result 2934 states and 11678 transitions. [2020-01-16 19:05:00,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:00,912 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:00,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:00,919 INFO L225 Difference]: With dead ends: 2934 [2020-01-16 19:05:00,919 INFO L226 Difference]: Without dead ends: 2916 [2020-01-16 19:05:00,919 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:00,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2020-01-16 19:05:00,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 1577. [2020-01-16 19:05:00,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 19:05:00,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7044 transitions. [2020-01-16 19:05:00,986 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7044 transitions. Word has length 28 [2020-01-16 19:05:00,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:00,986 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7044 transitions. [2020-01-16 19:05:00,987 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:00,987 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7044 transitions. [2020-01-16 19:05:00,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:00,989 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:00,989 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:00,989 INFO L426 AbstractCegarLoop]: === Iteration 416 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:00,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:00,989 INFO L82 PathProgramCache]: Analyzing trace with hash 544148144, now seen corresponding path program 408 times [2020-01-16 19:05:00,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:00,989 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549911679] [2020-01-16 19:05:00,990 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:00,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:01,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:01,534 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549911679] [2020-01-16 19:05:01,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:01,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:01,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127051263] [2020-01-16 19:05:01,535 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:01,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:01,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:01,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:01,535 INFO L87 Difference]: Start difference. First operand 1577 states and 7044 transitions. Second operand 11 states. [2020-01-16 19:05:01,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:01,714 INFO L93 Difference]: Finished difference Result 2933 states and 11669 transitions. [2020-01-16 19:05:01,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:01,715 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:01,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:01,722 INFO L225 Difference]: With dead ends: 2933 [2020-01-16 19:05:01,722 INFO L226 Difference]: Without dead ends: 2898 [2020-01-16 19:05:01,722 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:01,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2898 states. [2020-01-16 19:05:01,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2898 to 1559. [2020-01-16 19:05:01,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1559 states. [2020-01-16 19:05:01,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 7007 transitions. [2020-01-16 19:05:01,788 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 7007 transitions. Word has length 28 [2020-01-16 19:05:01,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:01,788 INFO L478 AbstractCegarLoop]: Abstraction has 1559 states and 7007 transitions. [2020-01-16 19:05:01,788 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:01,789 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 7007 transitions. [2020-01-16 19:05:01,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:01,791 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:01,791 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:01,791 INFO L426 AbstractCegarLoop]: === Iteration 417 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:01,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:01,791 INFO L82 PathProgramCache]: Analyzing trace with hash 847344676, now seen corresponding path program 409 times [2020-01-16 19:05:01,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:01,791 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616144913] [2020-01-16 19:05:01,791 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:01,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:02,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:02,323 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616144913] [2020-01-16 19:05:02,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:02,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:02,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868675616] [2020-01-16 19:05:02,323 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:02,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:02,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:02,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:02,324 INFO L87 Difference]: Start difference. First operand 1559 states and 7007 transitions. Second operand 11 states. [2020-01-16 19:05:02,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:02,497 INFO L93 Difference]: Finished difference Result 2896 states and 11596 transitions. [2020-01-16 19:05:02,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:02,498 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:02,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:02,505 INFO L225 Difference]: With dead ends: 2896 [2020-01-16 19:05:02,505 INFO L226 Difference]: Without dead ends: 2881 [2020-01-16 19:05:02,506 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:02,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2881 states. [2020-01-16 19:05:02,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2881 to 1572. [2020-01-16 19:05:02,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 19:05:02,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7050 transitions. [2020-01-16 19:05:02,572 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7050 transitions. Word has length 28 [2020-01-16 19:05:02,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:02,572 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7050 transitions. [2020-01-16 19:05:02,572 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:02,572 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7050 transitions. [2020-01-16 19:05:02,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:02,575 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:02,575 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:02,575 INFO L426 AbstractCegarLoop]: === Iteration 418 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:02,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:02,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1592047174, now seen corresponding path program 410 times [2020-01-16 19:05:02,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:02,575 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19755100] [2020-01-16 19:05:02,575 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:02,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:03,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:03,133 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19755100] [2020-01-16 19:05:03,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:03,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:03,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286681610] [2020-01-16 19:05:03,134 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:03,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:03,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:03,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:03,135 INFO L87 Difference]: Start difference. First operand 1572 states and 7050 transitions. Second operand 11 states. [2020-01-16 19:05:03,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:03,354 INFO L93 Difference]: Finished difference Result 2897 states and 11593 transitions. [2020-01-16 19:05:03,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:03,354 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:03,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:03,362 INFO L225 Difference]: With dead ends: 2897 [2020-01-16 19:05:03,363 INFO L226 Difference]: Without dead ends: 2876 [2020-01-16 19:05:03,363 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:03,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2876 states. [2020-01-16 19:05:03,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2876 to 1567. [2020-01-16 19:05:03,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 19:05:03,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7037 transitions. [2020-01-16 19:05:03,434 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7037 transitions. Word has length 28 [2020-01-16 19:05:03,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:03,434 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7037 transitions. [2020-01-16 19:05:03,434 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:03,434 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7037 transitions. [2020-01-16 19:05:03,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:03,436 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:03,436 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:03,436 INFO L426 AbstractCegarLoop]: === Iteration 419 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:03,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:03,437 INFO L82 PathProgramCache]: Analyzing trace with hash 312114874, now seen corresponding path program 411 times [2020-01-16 19:05:03,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:03,437 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551819521] [2020-01-16 19:05:03,437 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:03,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:04,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:04,022 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551819521] [2020-01-16 19:05:04,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:04,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:04,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197884317] [2020-01-16 19:05:04,023 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:04,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:04,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:04,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:04,023 INFO L87 Difference]: Start difference. First operand 1567 states and 7037 transitions. Second operand 11 states. [2020-01-16 19:05:04,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:04,228 INFO L93 Difference]: Finished difference Result 2893 states and 11585 transitions. [2020-01-16 19:05:04,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:04,229 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:04,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:04,236 INFO L225 Difference]: With dead ends: 2893 [2020-01-16 19:05:04,236 INFO L226 Difference]: Without dead ends: 2878 [2020-01-16 19:05:04,236 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:04,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2878 states. [2020-01-16 19:05:04,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2878 to 1571. [2020-01-16 19:05:04,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:05:04,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7044 transitions. [2020-01-16 19:05:04,303 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7044 transitions. Word has length 28 [2020-01-16 19:05:04,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:04,303 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7044 transitions. [2020-01-16 19:05:04,304 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:04,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7044 transitions. [2020-01-16 19:05:04,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:04,306 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:04,306 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:04,306 INFO L426 AbstractCegarLoop]: === Iteration 420 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:04,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:04,306 INFO L82 PathProgramCache]: Analyzing trace with hash 485362566, now seen corresponding path program 412 times [2020-01-16 19:05:04,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:04,306 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990120623] [2020-01-16 19:05:04,307 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:04,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:04,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:04,834 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990120623] [2020-01-16 19:05:04,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:04,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:04,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103818222] [2020-01-16 19:05:04,834 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:04,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:04,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:04,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:04,835 INFO L87 Difference]: Start difference. First operand 1571 states and 7044 transitions. Second operand 11 states. [2020-01-16 19:05:05,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:05,042 INFO L93 Difference]: Finished difference Result 2892 states and 11579 transitions. [2020-01-16 19:05:05,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:05,042 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:05,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:05,049 INFO L225 Difference]: With dead ends: 2892 [2020-01-16 19:05:05,049 INFO L226 Difference]: Without dead ends: 2874 [2020-01-16 19:05:05,049 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:05,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2874 states. [2020-01-16 19:05:05,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2874 to 1567. [2020-01-16 19:05:05,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 19:05:05,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7033 transitions. [2020-01-16 19:05:05,117 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7033 transitions. Word has length 28 [2020-01-16 19:05:05,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:05,117 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7033 transitions. [2020-01-16 19:05:05,117 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:05,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7033 transitions. [2020-01-16 19:05:05,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:05,119 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:05,120 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:05,120 INFO L426 AbstractCegarLoop]: === Iteration 421 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:05,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:05,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1627208966, now seen corresponding path program 413 times [2020-01-16 19:05:05,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:05,120 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227315560] [2020-01-16 19:05:05,120 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:05,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:05,645 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 19:05:05,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:05,652 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227315560] [2020-01-16 19:05:05,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:05,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:05,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325965789] [2020-01-16 19:05:05,652 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:05,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:05,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:05,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:05,653 INFO L87 Difference]: Start difference. First operand 1567 states and 7033 transitions. Second operand 11 states. [2020-01-16 19:05:05,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:05,826 INFO L93 Difference]: Finished difference Result 2895 states and 11585 transitions. [2020-01-16 19:05:05,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:05,827 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:05,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:05,834 INFO L225 Difference]: With dead ends: 2895 [2020-01-16 19:05:05,834 INFO L226 Difference]: Without dead ends: 2879 [2020-01-16 19:05:05,835 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:05,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2879 states. [2020-01-16 19:05:05,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2879 to 1571. [2020-01-16 19:05:05,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:05:05,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7040 transitions. [2020-01-16 19:05:05,903 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7040 transitions. Word has length 28 [2020-01-16 19:05:05,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:05,903 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7040 transitions. [2020-01-16 19:05:05,903 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:05,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7040 transitions. [2020-01-16 19:05:05,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:05,906 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:05,906 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:05,906 INFO L426 AbstractCegarLoop]: === Iteration 422 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:05,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:05,906 INFO L82 PathProgramCache]: Analyzing trace with hash 2096303524, now seen corresponding path program 414 times [2020-01-16 19:05:05,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:05,906 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465041173] [2020-01-16 19:05:05,906 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:05,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:06,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:06,431 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465041173] [2020-01-16 19:05:06,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:06,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:06,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878529143] [2020-01-16 19:05:06,431 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:06,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:06,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:06,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:06,432 INFO L87 Difference]: Start difference. First operand 1571 states and 7040 transitions. Second operand 11 states. [2020-01-16 19:05:06,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:06,610 INFO L93 Difference]: Finished difference Result 2893 states and 11577 transitions. [2020-01-16 19:05:06,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:06,610 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:06,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:06,617 INFO L225 Difference]: With dead ends: 2893 [2020-01-16 19:05:06,617 INFO L226 Difference]: Without dead ends: 2871 [2020-01-16 19:05:06,617 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:06,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2871 states. [2020-01-16 19:05:06,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2871 to 1563. [2020-01-16 19:05:06,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 19:05:06,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7022 transitions. [2020-01-16 19:05:06,703 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7022 transitions. Word has length 28 [2020-01-16 19:05:06,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:06,704 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7022 transitions. [2020-01-16 19:05:06,704 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:06,704 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7022 transitions. [2020-01-16 19:05:06,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:06,706 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:06,706 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:06,706 INFO L426 AbstractCegarLoop]: === Iteration 423 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:06,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:06,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1941436264, now seen corresponding path program 415 times [2020-01-16 19:05:06,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:06,707 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955504948] [2020-01-16 19:05:06,707 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:06,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:07,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:07,237 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955504948] [2020-01-16 19:05:07,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:07,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:07,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931580957] [2020-01-16 19:05:07,237 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:07,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:07,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:07,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:07,238 INFO L87 Difference]: Start difference. First operand 1563 states and 7022 transitions. Second operand 11 states. [2020-01-16 19:05:07,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:07,408 INFO L93 Difference]: Finished difference Result 2903 states and 11611 transitions. [2020-01-16 19:05:07,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:07,409 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:07,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:07,416 INFO L225 Difference]: With dead ends: 2903 [2020-01-16 19:05:07,416 INFO L226 Difference]: Without dead ends: 2888 [2020-01-16 19:05:07,416 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:07,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2888 states. [2020-01-16 19:05:07,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2888 to 1573. [2020-01-16 19:05:07,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:05:07,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7050 transitions. [2020-01-16 19:05:07,486 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7050 transitions. Word has length 28 [2020-01-16 19:05:07,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:07,486 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7050 transitions. [2020-01-16 19:05:07,486 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:07,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7050 transitions. [2020-01-16 19:05:07,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:07,489 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:07,489 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:07,489 INFO L426 AbstractCegarLoop]: === Iteration 424 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:07,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:07,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1608828534, now seen corresponding path program 416 times [2020-01-16 19:05:07,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:07,489 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85062553] [2020-01-16 19:05:07,489 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:07,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:08,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:08,019 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85062553] [2020-01-16 19:05:08,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:08,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:08,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263546634] [2020-01-16 19:05:08,020 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:08,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:08,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:08,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:08,020 INFO L87 Difference]: Start difference. First operand 1573 states and 7050 transitions. Second operand 11 states. [2020-01-16 19:05:08,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:08,199 INFO L93 Difference]: Finished difference Result 2904 states and 11608 transitions. [2020-01-16 19:05:08,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:08,200 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:08,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:08,207 INFO L225 Difference]: With dead ends: 2904 [2020-01-16 19:05:08,207 INFO L226 Difference]: Without dead ends: 2883 [2020-01-16 19:05:08,208 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:08,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2883 states. [2020-01-16 19:05:08,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2883 to 1568. [2020-01-16 19:05:08,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 19:05:08,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7036 transitions. [2020-01-16 19:05:08,273 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7036 transitions. Word has length 28 [2020-01-16 19:05:08,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:08,273 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7036 transitions. [2020-01-16 19:05:08,274 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:08,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7036 transitions. [2020-01-16 19:05:08,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:08,276 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:08,276 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:08,276 INFO L426 AbstractCegarLoop]: === Iteration 425 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:08,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:08,276 INFO L82 PathProgramCache]: Analyzing trace with hash 333121082, now seen corresponding path program 417 times [2020-01-16 19:05:08,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:08,276 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152157807] [2020-01-16 19:05:08,277 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:08,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:08,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:08,803 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152157807] [2020-01-16 19:05:08,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:08,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:08,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356465520] [2020-01-16 19:05:08,804 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:08,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:08,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:08,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:08,804 INFO L87 Difference]: Start difference. First operand 1568 states and 7036 transitions. Second operand 11 states. [2020-01-16 19:05:08,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:08,978 INFO L93 Difference]: Finished difference Result 2904 states and 11608 transitions. [2020-01-16 19:05:08,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:08,979 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:08,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:08,986 INFO L225 Difference]: With dead ends: 2904 [2020-01-16 19:05:08,986 INFO L226 Difference]: Without dead ends: 2889 [2020-01-16 19:05:08,987 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:09,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2889 states. [2020-01-16 19:05:09,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2889 to 1573. [2020-01-16 19:05:09,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:05:09,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7045 transitions. [2020-01-16 19:05:09,053 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7045 transitions. Word has length 28 [2020-01-16 19:05:09,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:09,053 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7045 transitions. [2020-01-16 19:05:09,053 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:09,053 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7045 transitions. [2020-01-16 19:05:09,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:09,055 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:09,056 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:09,056 INFO L426 AbstractCegarLoop]: === Iteration 426 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:09,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:09,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1995773770, now seen corresponding path program 418 times [2020-01-16 19:05:09,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:09,056 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300793680] [2020-01-16 19:05:09,056 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:09,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:09,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:09,579 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300793680] [2020-01-16 19:05:09,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:09,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:09,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831125524] [2020-01-16 19:05:09,579 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:09,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:09,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:09,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:09,580 INFO L87 Difference]: Start difference. First operand 1573 states and 7045 transitions. Second operand 11 states. [2020-01-16 19:05:09,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:09,760 INFO L93 Difference]: Finished difference Result 2906 states and 11607 transitions. [2020-01-16 19:05:09,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:09,761 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:09,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:09,768 INFO L225 Difference]: With dead ends: 2906 [2020-01-16 19:05:09,768 INFO L226 Difference]: Without dead ends: 2884 [2020-01-16 19:05:09,768 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:09,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2884 states. [2020-01-16 19:05:09,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2884 to 1568. [2020-01-16 19:05:09,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 19:05:09,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7031 transitions. [2020-01-16 19:05:09,834 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7031 transitions. Word has length 28 [2020-01-16 19:05:09,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:09,834 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7031 transitions. [2020-01-16 19:05:09,834 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:09,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7031 transitions. [2020-01-16 19:05:09,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:09,836 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:09,836 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:09,836 INFO L426 AbstractCegarLoop]: === Iteration 427 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:09,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:09,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1606202758, now seen corresponding path program 419 times [2020-01-16 19:05:09,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:09,837 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084807366] [2020-01-16 19:05:09,837 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:09,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:10,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:10,371 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084807366] [2020-01-16 19:05:10,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:10,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:10,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708019043] [2020-01-16 19:05:10,371 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:10,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:10,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:10,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:10,371 INFO L87 Difference]: Start difference. First operand 1568 states and 7031 transitions. Second operand 11 states. [2020-01-16 19:05:10,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:10,598 INFO L93 Difference]: Finished difference Result 2907 states and 11610 transitions. [2020-01-16 19:05:10,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:10,598 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:10,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:10,605 INFO L225 Difference]: With dead ends: 2907 [2020-01-16 19:05:10,605 INFO L226 Difference]: Without dead ends: 2891 [2020-01-16 19:05:10,606 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:10,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2891 states. [2020-01-16 19:05:10,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2891 to 1574. [2020-01-16 19:05:10,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 19:05:10,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7042 transitions. [2020-01-16 19:05:10,672 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7042 transitions. Word has length 28 [2020-01-16 19:05:10,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:10,673 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7042 transitions. [2020-01-16 19:05:10,673 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:10,673 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7042 transitions. [2020-01-16 19:05:10,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:10,675 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:10,675 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:10,675 INFO L426 AbstractCegarLoop]: === Iteration 428 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:10,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:10,675 INFO L82 PathProgramCache]: Analyzing trace with hash -688252568, now seen corresponding path program 420 times [2020-01-16 19:05:10,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:10,675 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695522726] [2020-01-16 19:05:10,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:10,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:11,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:11,204 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695522726] [2020-01-16 19:05:11,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:11,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:11,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446144787] [2020-01-16 19:05:11,204 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:11,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:11,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:11,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:11,204 INFO L87 Difference]: Start difference. First operand 1574 states and 7042 transitions. Second operand 11 states. [2020-01-16 19:05:11,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:11,395 INFO L93 Difference]: Finished difference Result 2908 states and 11606 transitions. [2020-01-16 19:05:11,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:11,396 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:11,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:11,403 INFO L225 Difference]: With dead ends: 2908 [2020-01-16 19:05:11,403 INFO L226 Difference]: Without dead ends: 2880 [2020-01-16 19:05:11,404 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:11,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2880 states. [2020-01-16 19:05:11,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2880 to 1563. [2020-01-16 19:05:11,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 19:05:11,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7018 transitions. [2020-01-16 19:05:11,470 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7018 transitions. Word has length 28 [2020-01-16 19:05:11,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:11,470 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7018 transitions. [2020-01-16 19:05:11,470 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:11,470 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7018 transitions. [2020-01-16 19:05:11,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:11,473 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:11,473 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:11,473 INFO L426 AbstractCegarLoop]: === Iteration 429 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:11,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:11,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1993951784, now seen corresponding path program 421 times [2020-01-16 19:05:11,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:11,473 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788256610] [2020-01-16 19:05:11,473 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:11,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:12,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:12,005 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788256610] [2020-01-16 19:05:12,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:12,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:12,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566520322] [2020-01-16 19:05:12,006 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:12,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:12,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:12,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:12,006 INFO L87 Difference]: Start difference. First operand 1563 states and 7018 transitions. Second operand 11 states. [2020-01-16 19:05:12,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:12,231 INFO L93 Difference]: Finished difference Result 2894 states and 11583 transitions. [2020-01-16 19:05:12,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:12,231 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:12,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:12,238 INFO L225 Difference]: With dead ends: 2894 [2020-01-16 19:05:12,238 INFO L226 Difference]: Without dead ends: 2879 [2020-01-16 19:05:12,239 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:12,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2879 states. [2020-01-16 19:05:12,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2879 to 1571. [2020-01-16 19:05:12,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:05:12,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7040 transitions. [2020-01-16 19:05:12,305 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7040 transitions. Word has length 28 [2020-01-16 19:05:12,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:12,305 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7040 transitions. [2020-01-16 19:05:12,305 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:12,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7040 transitions. [2020-01-16 19:05:12,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:12,307 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:12,307 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:12,308 INFO L426 AbstractCegarLoop]: === Iteration 430 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:12,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:12,308 INFO L82 PathProgramCache]: Analyzing trace with hash -2127767820, now seen corresponding path program 422 times [2020-01-16 19:05:12,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:12,308 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402140458] [2020-01-16 19:05:12,308 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:12,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:12,837 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 19:05:12,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:12,845 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402140458] [2020-01-16 19:05:12,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:12,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:12,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576181707] [2020-01-16 19:05:12,845 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:12,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:12,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:12,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:12,845 INFO L87 Difference]: Start difference. First operand 1571 states and 7040 transitions. Second operand 11 states. [2020-01-16 19:05:13,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:13,045 INFO L93 Difference]: Finished difference Result 2893 states and 11577 transitions. [2020-01-16 19:05:13,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:13,046 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:13,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:13,053 INFO L225 Difference]: With dead ends: 2893 [2020-01-16 19:05:13,053 INFO L226 Difference]: Without dead ends: 2875 [2020-01-16 19:05:13,053 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:13,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2875 states. [2020-01-16 19:05:13,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2875 to 1567. [2020-01-16 19:05:13,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 19:05:13,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7029 transitions. [2020-01-16 19:05:13,120 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7029 transitions. Word has length 28 [2020-01-16 19:05:13,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:13,121 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7029 transitions. [2020-01-16 19:05:13,121 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:13,121 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7029 transitions. [2020-01-16 19:05:13,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:13,123 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:13,123 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:13,123 INFO L426 AbstractCegarLoop]: === Iteration 431 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:13,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:13,123 INFO L82 PathProgramCache]: Analyzing trace with hash 920866404, now seen corresponding path program 423 times [2020-01-16 19:05:13,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:13,124 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591481344] [2020-01-16 19:05:13,124 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:13,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:13,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:13,655 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591481344] [2020-01-16 19:05:13,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:13,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:13,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924354805] [2020-01-16 19:05:13,656 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:13,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:13,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:13,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:13,656 INFO L87 Difference]: Start difference. First operand 1567 states and 7029 transitions. Second operand 11 states. [2020-01-16 19:05:13,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:13,850 INFO L93 Difference]: Finished difference Result 2898 states and 11588 transitions. [2020-01-16 19:05:13,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:13,851 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:13,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:13,858 INFO L225 Difference]: With dead ends: 2898 [2020-01-16 19:05:13,858 INFO L226 Difference]: Without dead ends: 2883 [2020-01-16 19:05:13,859 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:13,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2883 states. [2020-01-16 19:05:13,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2883 to 1572. [2020-01-16 19:05:13,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 19:05:13,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7038 transitions. [2020-01-16 19:05:13,924 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7038 transitions. Word has length 28 [2020-01-16 19:05:13,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:13,924 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7038 transitions. [2020-01-16 19:05:13,924 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:13,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7038 transitions. [2020-01-16 19:05:13,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:13,927 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:13,927 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:13,927 INFO L426 AbstractCegarLoop]: === Iteration 432 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:13,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:13,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1711448204, now seen corresponding path program 424 times [2020-01-16 19:05:13,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:13,927 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830979519] [2020-01-16 19:05:13,927 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:13,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:14,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:14,443 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830979519] [2020-01-16 19:05:14,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:14,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:14,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993098716] [2020-01-16 19:05:14,443 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:14,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:14,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:14,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:14,444 INFO L87 Difference]: Start difference. First operand 1572 states and 7038 transitions. Second operand 11 states. [2020-01-16 19:05:14,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:14,657 INFO L93 Difference]: Finished difference Result 2900 states and 11587 transitions. [2020-01-16 19:05:14,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:14,658 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:14,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:14,665 INFO L225 Difference]: With dead ends: 2900 [2020-01-16 19:05:14,665 INFO L226 Difference]: Without dead ends: 2878 [2020-01-16 19:05:14,666 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:14,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2878 states. [2020-01-16 19:05:14,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2878 to 1567. [2020-01-16 19:05:14,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 19:05:14,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7025 transitions. [2020-01-16 19:05:14,732 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7025 transitions. Word has length 28 [2020-01-16 19:05:14,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:14,732 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7025 transitions. [2020-01-16 19:05:14,732 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:14,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7025 transitions. [2020-01-16 19:05:14,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:14,735 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:14,735 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:14,735 INFO L426 AbstractCegarLoop]: === Iteration 433 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:14,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:14,735 INFO L82 PathProgramCache]: Analyzing trace with hash -2125142044, now seen corresponding path program 425 times [2020-01-16 19:05:14,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:14,735 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830708165] [2020-01-16 19:05:14,735 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:14,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:15,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:15,258 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830708165] [2020-01-16 19:05:15,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:15,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:15,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181347017] [2020-01-16 19:05:15,259 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:15,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:15,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:15,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:15,259 INFO L87 Difference]: Start difference. First operand 1567 states and 7025 transitions. Second operand 11 states. [2020-01-16 19:05:15,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:15,481 INFO L93 Difference]: Finished difference Result 2895 states and 11577 transitions. [2020-01-16 19:05:15,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:15,482 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:15,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:15,489 INFO L225 Difference]: With dead ends: 2895 [2020-01-16 19:05:15,490 INFO L226 Difference]: Without dead ends: 2881 [2020-01-16 19:05:15,490 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:15,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2881 states. [2020-01-16 19:05:15,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2881 to 1571. [2020-01-16 19:05:15,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:05:15,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7032 transitions. [2020-01-16 19:05:15,557 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7032 transitions. Word has length 28 [2020-01-16 19:05:15,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:15,557 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7032 transitions. [2020-01-16 19:05:15,557 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:15,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7032 transitions. [2020-01-16 19:05:15,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:15,559 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:15,559 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:15,560 INFO L426 AbstractCegarLoop]: === Iteration 434 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:15,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:15,560 INFO L82 PathProgramCache]: Analyzing trace with hash -635737048, now seen corresponding path program 426 times [2020-01-16 19:05:15,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:15,560 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612351090] [2020-01-16 19:05:15,560 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:15,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:16,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:16,088 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612351090] [2020-01-16 19:05:16,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:16,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:16,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895565040] [2020-01-16 19:05:16,088 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:16,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:16,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:16,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:16,089 INFO L87 Difference]: Start difference. First operand 1571 states and 7032 transitions. Second operand 11 states. [2020-01-16 19:05:16,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:16,293 INFO L93 Difference]: Finished difference Result 2898 states and 11579 transitions. [2020-01-16 19:05:16,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:16,293 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:16,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:16,300 INFO L225 Difference]: With dead ends: 2898 [2020-01-16 19:05:16,300 INFO L226 Difference]: Without dead ends: 2873 [2020-01-16 19:05:16,301 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:16,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2873 states. [2020-01-16 19:05:16,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2873 to 1563. [2020-01-16 19:05:16,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 19:05:16,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7014 transitions. [2020-01-16 19:05:16,368 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7014 transitions. Word has length 28 [2020-01-16 19:05:16,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:16,368 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7014 transitions. [2020-01-16 19:05:16,368 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:16,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7014 transitions. [2020-01-16 19:05:16,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:16,370 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:16,370 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:16,370 INFO L426 AbstractCegarLoop]: === Iteration 435 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:16,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:16,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1545809910, now seen corresponding path program 427 times [2020-01-16 19:05:16,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:16,371 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913103768] [2020-01-16 19:05:16,371 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:16,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:16,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:16,891 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913103768] [2020-01-16 19:05:16,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:16,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:16,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662038046] [2020-01-16 19:05:16,892 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:16,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:16,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:16,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:16,892 INFO L87 Difference]: Start difference. First operand 1563 states and 7014 transitions. Second operand 11 states. [2020-01-16 19:05:17,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:17,086 INFO L93 Difference]: Finished difference Result 2898 states and 11588 transitions. [2020-01-16 19:05:17,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:17,087 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:17,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:17,094 INFO L225 Difference]: With dead ends: 2898 [2020-01-16 19:05:17,094 INFO L226 Difference]: Without dead ends: 2882 [2020-01-16 19:05:17,094 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:17,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2882 states. [2020-01-16 19:05:17,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2882 to 1571. [2020-01-16 19:05:17,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:05:17,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7036 transitions. [2020-01-16 19:05:17,160 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7036 transitions. Word has length 28 [2020-01-16 19:05:17,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:17,160 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7036 transitions. [2020-01-16 19:05:17,160 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:17,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7036 transitions. [2020-01-16 19:05:17,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:17,163 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:17,163 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:17,163 INFO L426 AbstractCegarLoop]: === Iteration 436 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:17,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:17,163 INFO L82 PathProgramCache]: Analyzing trace with hash -2117264716, now seen corresponding path program 428 times [2020-01-16 19:05:17,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:17,163 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229427334] [2020-01-16 19:05:17,163 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:17,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:17,700 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 19:05:17,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:17,706 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229427334] [2020-01-16 19:05:17,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:17,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:17,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023269162] [2020-01-16 19:05:17,706 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:17,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:17,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:17,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:17,707 INFO L87 Difference]: Start difference. First operand 1571 states and 7036 transitions. Second operand 11 states. [2020-01-16 19:05:17,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:17,930 INFO L93 Difference]: Finished difference Result 2896 states and 11580 transitions. [2020-01-16 19:05:17,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:17,930 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:17,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:17,938 INFO L225 Difference]: With dead ends: 2896 [2020-01-16 19:05:17,938 INFO L226 Difference]: Without dead ends: 2878 [2020-01-16 19:05:17,938 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:17,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2878 states. [2020-01-16 19:05:18,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2878 to 1567. [2020-01-16 19:05:18,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 19:05:18,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7025 transitions. [2020-01-16 19:05:18,005 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7025 transitions. Word has length 28 [2020-01-16 19:05:18,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:18,005 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7025 transitions. [2020-01-16 19:05:18,005 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:18,005 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7025 transitions. [2020-01-16 19:05:18,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:18,008 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:18,008 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:18,008 INFO L426 AbstractCegarLoop]: === Iteration 437 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:18,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:18,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1676072006, now seen corresponding path program 429 times [2020-01-16 19:05:18,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:18,008 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101986750] [2020-01-16 19:05:18,008 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:18,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:18,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:18,530 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101986750] [2020-01-16 19:05:18,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:18,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:18,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828632422] [2020-01-16 19:05:18,531 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:18,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:18,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:18,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:18,531 INFO L87 Difference]: Start difference. First operand 1567 states and 7025 transitions. Second operand 11 states. [2020-01-16 19:05:18,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:18,727 INFO L93 Difference]: Finished difference Result 2903 states and 11596 transitions. [2020-01-16 19:05:18,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:18,728 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:18,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:18,735 INFO L225 Difference]: With dead ends: 2903 [2020-01-16 19:05:18,736 INFO L226 Difference]: Without dead ends: 2887 [2020-01-16 19:05:18,736 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:18,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2887 states. [2020-01-16 19:05:18,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2887 to 1573. [2020-01-16 19:05:18,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:05:18,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7036 transitions. [2020-01-16 19:05:18,802 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7036 transitions. Word has length 28 [2020-01-16 19:05:18,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:18,802 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7036 transitions. [2020-01-16 19:05:18,802 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:18,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7036 transitions. [2020-01-16 19:05:18,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:18,805 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:18,805 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:18,805 INFO L426 AbstractCegarLoop]: === Iteration 438 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:18,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:18,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1700945100, now seen corresponding path program 430 times [2020-01-16 19:05:18,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:18,805 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632104868] [2020-01-16 19:05:18,805 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:18,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:19,345 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 19:05:19,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:19,352 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632104868] [2020-01-16 19:05:19,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:19,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:19,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33401135] [2020-01-16 19:05:19,352 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:19,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:19,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:19,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:19,353 INFO L87 Difference]: Start difference. First operand 1573 states and 7036 transitions. Second operand 11 states. [2020-01-16 19:05:19,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:19,531 INFO L93 Difference]: Finished difference Result 2904 states and 11592 transitions. [2020-01-16 19:05:19,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:19,531 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:19,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:19,539 INFO L225 Difference]: With dead ends: 2904 [2020-01-16 19:05:19,539 INFO L226 Difference]: Without dead ends: 2881 [2020-01-16 19:05:19,539 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:19,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2881 states. [2020-01-16 19:05:19,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2881 to 1567. [2020-01-16 19:05:19,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 19:05:19,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7021 transitions. [2020-01-16 19:05:19,604 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7021 transitions. Word has length 28 [2020-01-16 19:05:19,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:19,605 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7021 transitions. [2020-01-16 19:05:19,605 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:19,605 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7021 transitions. [2020-01-16 19:05:19,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:19,607 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:19,607 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:19,607 INFO L426 AbstractCegarLoop]: === Iteration 439 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:19,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:19,607 INFO L82 PathProgramCache]: Analyzing trace with hash 569387398, now seen corresponding path program 431 times [2020-01-16 19:05:19,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:19,607 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860082067] [2020-01-16 19:05:19,608 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:19,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:20,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:20,124 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860082067] [2020-01-16 19:05:20,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:20,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:20,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938150925] [2020-01-16 19:05:20,124 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:20,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:20,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:20,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:20,125 INFO L87 Difference]: Start difference. First operand 1567 states and 7021 transitions. Second operand 11 states. [2020-01-16 19:05:20,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:20,317 INFO L93 Difference]: Finished difference Result 2897 states and 11578 transitions. [2020-01-16 19:05:20,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:20,317 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:20,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:20,325 INFO L225 Difference]: With dead ends: 2897 [2020-01-16 19:05:20,325 INFO L226 Difference]: Without dead ends: 2883 [2020-01-16 19:05:20,325 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:20,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2883 states. [2020-01-16 19:05:20,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2883 to 1571. [2020-01-16 19:05:20,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:05:20,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7028 transitions. [2020-01-16 19:05:20,390 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7028 transitions. Word has length 28 [2020-01-16 19:05:20,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:20,390 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7028 transitions. [2020-01-16 19:05:20,390 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:20,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7028 transitions. [2020-01-16 19:05:20,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:20,392 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:20,392 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:20,392 INFO L426 AbstractCegarLoop]: === Iteration 440 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:20,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:20,393 INFO L82 PathProgramCache]: Analyzing trace with hash 2058792394, now seen corresponding path program 432 times [2020-01-16 19:05:20,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:20,393 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374920381] [2020-01-16 19:05:20,393 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:20,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:20,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:20,911 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374920381] [2020-01-16 19:05:20,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:20,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:20,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105453606] [2020-01-16 19:05:20,912 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:20,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:20,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:20,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:20,912 INFO L87 Difference]: Start difference. First operand 1571 states and 7028 transitions. Second operand 11 states. [2020-01-16 19:05:21,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:21,128 INFO L93 Difference]: Finished difference Result 2900 states and 11580 transitions. [2020-01-16 19:05:21,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:21,129 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:21,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:21,136 INFO L225 Difference]: With dead ends: 2900 [2020-01-16 19:05:21,137 INFO L226 Difference]: Without dead ends: 2871 [2020-01-16 19:05:21,137 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:21,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2871 states. [2020-01-16 19:05:21,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2871 to 1559. [2020-01-16 19:05:21,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1559 states. [2020-01-16 19:05:21,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 7003 transitions. [2020-01-16 19:05:21,202 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 7003 transitions. Word has length 28 [2020-01-16 19:05:21,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:21,202 INFO L478 AbstractCegarLoop]: Abstraction has 1559 states and 7003 transitions. [2020-01-16 19:05:21,202 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:21,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 7003 transitions. [2020-01-16 19:05:21,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:21,204 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:21,205 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:21,205 INFO L426 AbstractCegarLoop]: === Iteration 441 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:21,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:21,205 INFO L82 PathProgramCache]: Analyzing trace with hash 425451744, now seen corresponding path program 433 times [2020-01-16 19:05:21,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:21,205 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047492798] [2020-01-16 19:05:21,205 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:21,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:21,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:21,727 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047492798] [2020-01-16 19:05:21,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:21,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:21,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505784387] [2020-01-16 19:05:21,728 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:21,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:21,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:21,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:21,728 INFO L87 Difference]: Start difference. First operand 1559 states and 7003 transitions. Second operand 11 states. [2020-01-16 19:05:21,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:21,905 INFO L93 Difference]: Finished difference Result 2903 states and 11607 transitions. [2020-01-16 19:05:21,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:21,906 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:21,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:21,913 INFO L225 Difference]: With dead ends: 2903 [2020-01-16 19:05:21,914 INFO L226 Difference]: Without dead ends: 2888 [2020-01-16 19:05:21,914 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:21,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2888 states. [2020-01-16 19:05:21,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2888 to 1572. [2020-01-16 19:05:21,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 19:05:21,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7046 transitions. [2020-01-16 19:05:21,979 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7046 transitions. Word has length 28 [2020-01-16 19:05:21,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:21,979 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7046 transitions. [2020-01-16 19:05:21,979 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:21,979 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7046 transitions. [2020-01-16 19:05:21,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:21,982 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:21,982 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:21,982 INFO L426 AbstractCegarLoop]: === Iteration 442 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:21,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:21,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1635408058, now seen corresponding path program 434 times [2020-01-16 19:05:21,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:21,982 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401962356] [2020-01-16 19:05:21,982 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:21,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:22,526 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 19:05:22,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:22,533 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401962356] [2020-01-16 19:05:22,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:22,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:22,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646272595] [2020-01-16 19:05:22,533 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:22,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:22,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:22,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:22,534 INFO L87 Difference]: Start difference. First operand 1572 states and 7046 transitions. Second operand 11 states. [2020-01-16 19:05:22,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:22,709 INFO L93 Difference]: Finished difference Result 2906 states and 11608 transitions. [2020-01-16 19:05:22,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:22,710 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:22,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:22,716 INFO L225 Difference]: With dead ends: 2906 [2020-01-16 19:05:22,717 INFO L226 Difference]: Without dead ends: 2883 [2020-01-16 19:05:22,717 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:22,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2883 states. [2020-01-16 19:05:22,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2883 to 1567. [2020-01-16 19:05:22,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 19:05:22,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7033 transitions. [2020-01-16 19:05:22,782 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7033 transitions. Word has length 28 [2020-01-16 19:05:22,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:22,782 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7033 transitions. [2020-01-16 19:05:22,782 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:22,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7033 transitions. [2020-01-16 19:05:22,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:22,784 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:22,784 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:22,784 INFO L426 AbstractCegarLoop]: === Iteration 443 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:22,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:22,785 INFO L82 PathProgramCache]: Analyzing trace with hash 963307322, now seen corresponding path program 435 times [2020-01-16 19:05:22,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:22,785 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621460888] [2020-01-16 19:05:22,785 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:22,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:23,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:23,332 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621460888] [2020-01-16 19:05:23,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:23,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:23,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65975657] [2020-01-16 19:05:23,333 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:23,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:23,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:23,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:23,333 INFO L87 Difference]: Start difference. First operand 1567 states and 7033 transitions. Second operand 11 states. [2020-01-16 19:05:23,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:23,541 INFO L93 Difference]: Finished difference Result 2898 states and 11592 transitions. [2020-01-16 19:05:23,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:23,542 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:23,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:23,549 INFO L225 Difference]: With dead ends: 2898 [2020-01-16 19:05:23,549 INFO L226 Difference]: Without dead ends: 2883 [2020-01-16 19:05:23,549 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:23,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2883 states. [2020-01-16 19:05:23,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2883 to 1571. [2020-01-16 19:05:23,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:05:23,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7040 transitions. [2020-01-16 19:05:23,615 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7040 transitions. Word has length 28 [2020-01-16 19:05:23,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:23,615 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7040 transitions. [2020-01-16 19:05:23,615 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:23,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7040 transitions. [2020-01-16 19:05:23,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:23,618 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:23,618 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:23,618 INFO L426 AbstractCegarLoop]: === Iteration 444 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:23,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:23,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1136555014, now seen corresponding path program 436 times [2020-01-16 19:05:23,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:23,618 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380192715] [2020-01-16 19:05:23,618 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:23,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:24,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:24,139 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380192715] [2020-01-16 19:05:24,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:24,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:24,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104508447] [2020-01-16 19:05:24,140 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:24,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:24,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:24,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:24,140 INFO L87 Difference]: Start difference. First operand 1571 states and 7040 transitions. Second operand 11 states. [2020-01-16 19:05:24,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:24,337 INFO L93 Difference]: Finished difference Result 2897 states and 11586 transitions. [2020-01-16 19:05:24,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:24,337 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:24,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:24,345 INFO L225 Difference]: With dead ends: 2897 [2020-01-16 19:05:24,345 INFO L226 Difference]: Without dead ends: 2879 [2020-01-16 19:05:24,345 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:24,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2879 states. [2020-01-16 19:05:24,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2879 to 1567. [2020-01-16 19:05:24,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 19:05:24,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7029 transitions. [2020-01-16 19:05:24,411 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7029 transitions. Word has length 28 [2020-01-16 19:05:24,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:24,411 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7029 transitions. [2020-01-16 19:05:24,411 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:24,411 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7029 transitions. [2020-01-16 19:05:24,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:24,413 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:24,413 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:24,413 INFO L426 AbstractCegarLoop]: === Iteration 445 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:24,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:24,414 INFO L82 PathProgramCache]: Analyzing trace with hash -559696902, now seen corresponding path program 437 times [2020-01-16 19:05:24,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:24,414 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167524043] [2020-01-16 19:05:24,414 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:24,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:24,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:24,938 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167524043] [2020-01-16 19:05:24,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:24,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:24,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886552732] [2020-01-16 19:05:24,938 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:24,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:24,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:24,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:24,939 INFO L87 Difference]: Start difference. First operand 1567 states and 7029 transitions. Second operand 11 states. [2020-01-16 19:05:25,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:25,133 INFO L93 Difference]: Finished difference Result 2904 states and 11600 transitions. [2020-01-16 19:05:25,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:25,133 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:25,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:25,141 INFO L225 Difference]: With dead ends: 2904 [2020-01-16 19:05:25,141 INFO L226 Difference]: Without dead ends: 2886 [2020-01-16 19:05:25,141 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:25,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2886 states. [2020-01-16 19:05:25,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2886 to 1571. [2020-01-16 19:05:25,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:05:25,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7036 transitions. [2020-01-16 19:05:25,206 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7036 transitions. Word has length 28 [2020-01-16 19:05:25,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:25,207 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7036 transitions. [2020-01-16 19:05:25,207 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:25,207 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7036 transitions. [2020-01-16 19:05:25,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:25,209 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:25,209 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:25,209 INFO L426 AbstractCegarLoop]: === Iteration 446 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:25,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:25,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1674410592, now seen corresponding path program 438 times [2020-01-16 19:05:25,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:25,209 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640876241] [2020-01-16 19:05:25,210 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:25,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:25,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:25,734 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640876241] [2020-01-16 19:05:25,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:25,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:25,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367546765] [2020-01-16 19:05:25,734 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:25,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:25,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:25,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:25,734 INFO L87 Difference]: Start difference. First operand 1571 states and 7036 transitions. Second operand 11 states. [2020-01-16 19:05:25,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:25,913 INFO L93 Difference]: Finished difference Result 2900 states and 11588 transitions. [2020-01-16 19:05:25,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:25,913 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:25,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:25,920 INFO L225 Difference]: With dead ends: 2900 [2020-01-16 19:05:25,920 INFO L226 Difference]: Without dead ends: 2878 [2020-01-16 19:05:25,920 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:25,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2878 states. [2020-01-16 19:05:25,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2878 to 1563. [2020-01-16 19:05:25,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 19:05:25,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7018 transitions. [2020-01-16 19:05:25,986 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7018 transitions. Word has length 28 [2020-01-16 19:05:25,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:25,986 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7018 transitions. [2020-01-16 19:05:25,986 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:25,986 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7018 transitions. [2020-01-16 19:05:25,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:25,988 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:25,988 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:25,988 INFO L426 AbstractCegarLoop]: === Iteration 447 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:25,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:25,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1519543332, now seen corresponding path program 439 times [2020-01-16 19:05:25,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:25,989 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141167107] [2020-01-16 19:05:25,989 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:25,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:26,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:26,514 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141167107] [2020-01-16 19:05:26,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:26,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:26,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132904407] [2020-01-16 19:05:26,515 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:26,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:26,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:26,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:26,515 INFO L87 Difference]: Start difference. First operand 1563 states and 7018 transitions. Second operand 11 states. [2020-01-16 19:05:26,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:26,694 INFO L93 Difference]: Finished difference Result 2911 states and 11625 transitions. [2020-01-16 19:05:26,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:26,694 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:26,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:26,701 INFO L225 Difference]: With dead ends: 2911 [2020-01-16 19:05:26,701 INFO L226 Difference]: Without dead ends: 2896 [2020-01-16 19:05:26,702 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:26,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2896 states. [2020-01-16 19:05:26,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2896 to 1573. [2020-01-16 19:05:26,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:05:26,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7046 transitions. [2020-01-16 19:05:26,767 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7046 transitions. Word has length 28 [2020-01-16 19:05:26,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:26,768 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7046 transitions. [2020-01-16 19:05:26,768 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:26,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7046 transitions. [2020-01-16 19:05:26,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:26,770 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:26,770 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:26,770 INFO L426 AbstractCegarLoop]: === Iteration 448 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:26,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:26,770 INFO L82 PathProgramCache]: Analyzing trace with hash -541316470, now seen corresponding path program 440 times [2020-01-16 19:05:26,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:26,770 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575116648] [2020-01-16 19:05:26,771 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:26,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:27,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:27,293 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575116648] [2020-01-16 19:05:27,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:27,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:27,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2691496] [2020-01-16 19:05:27,293 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:27,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:27,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:27,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:27,294 INFO L87 Difference]: Start difference. First operand 1573 states and 7046 transitions. Second operand 11 states. [2020-01-16 19:05:27,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:27,467 INFO L93 Difference]: Finished difference Result 2914 states and 11626 transitions. [2020-01-16 19:05:27,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:27,468 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:27,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:27,476 INFO L225 Difference]: With dead ends: 2914 [2020-01-16 19:05:27,476 INFO L226 Difference]: Without dead ends: 2891 [2020-01-16 19:05:27,476 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:27,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2891 states. [2020-01-16 19:05:27,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2891 to 1568. [2020-01-16 19:05:27,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 19:05:27,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7032 transitions. [2020-01-16 19:05:27,545 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7032 transitions. Word has length 28 [2020-01-16 19:05:27,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:27,545 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7032 transitions. [2020-01-16 19:05:27,545 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:27,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7032 transitions. [2020-01-16 19:05:27,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:27,547 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:27,547 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:27,547 INFO L426 AbstractCegarLoop]: === Iteration 449 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:27,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:27,547 INFO L82 PathProgramCache]: Analyzing trace with hash 984313530, now seen corresponding path program 441 times [2020-01-16 19:05:27,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:27,548 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972228305] [2020-01-16 19:05:27,548 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:27,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:28,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:28,069 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972228305] [2020-01-16 19:05:28,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:28,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:28,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159506340] [2020-01-16 19:05:28,070 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:28,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:28,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:28,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:28,070 INFO L87 Difference]: Start difference. First operand 1568 states and 7032 transitions. Second operand 11 states. [2020-01-16 19:05:28,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:28,244 INFO L93 Difference]: Finished difference Result 2910 states and 11618 transitions. [2020-01-16 19:05:28,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:28,245 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:28,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:28,252 INFO L225 Difference]: With dead ends: 2910 [2020-01-16 19:05:28,252 INFO L226 Difference]: Without dead ends: 2895 [2020-01-16 19:05:28,252 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:28,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2895 states. [2020-01-16 19:05:28,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2895 to 1573. [2020-01-16 19:05:28,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:05:28,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7041 transitions. [2020-01-16 19:05:28,318 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7041 transitions. Word has length 28 [2020-01-16 19:05:28,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:28,318 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7041 transitions. [2020-01-16 19:05:28,318 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:28,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7041 transitions. [2020-01-16 19:05:28,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:28,321 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:28,321 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:28,321 INFO L426 AbstractCegarLoop]: === Iteration 450 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:28,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:28,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1648001078, now seen corresponding path program 442 times [2020-01-16 19:05:28,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:28,321 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133343359] [2020-01-16 19:05:28,321 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:28,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:28,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:28,871 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133343359] [2020-01-16 19:05:28,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:28,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:28,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080979779] [2020-01-16 19:05:28,872 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:28,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:28,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:28,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:28,872 INFO L87 Difference]: Start difference. First operand 1573 states and 7041 transitions. Second operand 11 states. [2020-01-16 19:05:29,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:29,058 INFO L93 Difference]: Finished difference Result 2912 states and 11617 transitions. [2020-01-16 19:05:29,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:29,059 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:29,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:29,066 INFO L225 Difference]: With dead ends: 2912 [2020-01-16 19:05:29,067 INFO L226 Difference]: Without dead ends: 2890 [2020-01-16 19:05:29,067 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:29,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2890 states. [2020-01-16 19:05:29,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2890 to 1568. [2020-01-16 19:05:29,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 19:05:29,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7027 transitions. [2020-01-16 19:05:29,134 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7027 transitions. Word has length 28 [2020-01-16 19:05:29,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:29,134 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7027 transitions. [2020-01-16 19:05:29,134 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:29,134 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7027 transitions. [2020-01-16 19:05:29,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:29,137 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:29,137 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:29,137 INFO L426 AbstractCegarLoop]: === Iteration 451 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:29,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:29,137 INFO L82 PathProgramCache]: Analyzing trace with hash -538690694, now seen corresponding path program 443 times [2020-01-16 19:05:29,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:29,137 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845437334] [2020-01-16 19:05:29,137 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:29,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:29,651 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845437334] [2020-01-16 19:05:29,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:29,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:29,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311400848] [2020-01-16 19:05:29,651 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:29,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:29,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:29,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:29,651 INFO L87 Difference]: Start difference. First operand 1568 states and 7027 transitions. Second operand 11 states. [2020-01-16 19:05:29,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:29,827 INFO L93 Difference]: Finished difference Result 2918 states and 11631 transitions. [2020-01-16 19:05:29,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:29,827 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:29,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:29,834 INFO L225 Difference]: With dead ends: 2918 [2020-01-16 19:05:29,834 INFO L226 Difference]: Without dead ends: 2900 [2020-01-16 19:05:29,835 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:29,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2900 states. [2020-01-16 19:05:29,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2900 to 1575. [2020-01-16 19:05:29,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:05:29,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7040 transitions. [2020-01-16 19:05:29,902 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7040 transitions. Word has length 28 [2020-01-16 19:05:29,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:29,902 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7040 transitions. [2020-01-16 19:05:29,902 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:29,902 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7040 transitions. [2020-01-16 19:05:29,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:29,904 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:29,904 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:29,905 INFO L426 AbstractCegarLoop]: === Iteration 452 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:29,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:29,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1110145500, now seen corresponding path program 444 times [2020-01-16 19:05:29,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:29,905 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293518210] [2020-01-16 19:05:29,905 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:29,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:30,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:30,425 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293518210] [2020-01-16 19:05:30,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:30,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:30,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429830883] [2020-01-16 19:05:30,426 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:30,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:30,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:30,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:30,426 INFO L87 Difference]: Start difference. First operand 1575 states and 7040 transitions. Second operand 11 states. [2020-01-16 19:05:30,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:30,603 INFO L93 Difference]: Finished difference Result 2917 states and 11622 transitions. [2020-01-16 19:05:30,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:30,603 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:30,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:30,610 INFO L225 Difference]: With dead ends: 2917 [2020-01-16 19:05:30,610 INFO L226 Difference]: Without dead ends: 2888 [2020-01-16 19:05:30,610 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:30,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2888 states. [2020-01-16 19:05:30,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2888 to 1563. [2020-01-16 19:05:30,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 19:05:30,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7014 transitions. [2020-01-16 19:05:30,675 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7014 transitions. Word has length 28 [2020-01-16 19:05:30,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:30,676 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7014 transitions. [2020-01-16 19:05:30,676 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:30,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7014 transitions. [2020-01-16 19:05:30,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:30,678 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:30,678 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:30,678 INFO L426 AbstractCegarLoop]: === Iteration 453 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:30,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:30,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1551052644, now seen corresponding path program 445 times [2020-01-16 19:05:30,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:30,678 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035678230] [2020-01-16 19:05:30,679 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:30,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:31,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:31,208 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035678230] [2020-01-16 19:05:31,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:31,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:31,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121460716] [2020-01-16 19:05:31,209 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:31,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:31,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:31,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:31,209 INFO L87 Difference]: Start difference. First operand 1563 states and 7014 transitions. Second operand 11 states. [2020-01-16 19:05:31,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:31,414 INFO L93 Difference]: Finished difference Result 2897 states and 11586 transitions. [2020-01-16 19:05:31,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:31,415 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:31,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:31,422 INFO L225 Difference]: With dead ends: 2897 [2020-01-16 19:05:31,423 INFO L226 Difference]: Without dead ends: 2882 [2020-01-16 19:05:31,423 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:31,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2882 states. [2020-01-16 19:05:31,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2882 to 1571. [2020-01-16 19:05:31,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:05:31,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7036 transitions. [2020-01-16 19:05:31,490 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7036 transitions. Word has length 28 [2020-01-16 19:05:31,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:31,490 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7036 transitions. [2020-01-16 19:05:31,490 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:31,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7036 transitions. [2020-01-16 19:05:31,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:31,493 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:31,493 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:31,493 INFO L426 AbstractCegarLoop]: === Iteration 454 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:31,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:31,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1724300336, now seen corresponding path program 446 times [2020-01-16 19:05:31,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:31,493 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662694185] [2020-01-16 19:05:31,493 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:31,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:32,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:32,011 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662694185] [2020-01-16 19:05:32,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:32,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:32,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503974556] [2020-01-16 19:05:32,012 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:32,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:32,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:32,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:32,012 INFO L87 Difference]: Start difference. First operand 1571 states and 7036 transitions. Second operand 11 states. [2020-01-16 19:05:32,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:32,213 INFO L93 Difference]: Finished difference Result 2896 states and 11580 transitions. [2020-01-16 19:05:32,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:32,213 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:32,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:32,220 INFO L225 Difference]: With dead ends: 2896 [2020-01-16 19:05:32,220 INFO L226 Difference]: Without dead ends: 2878 [2020-01-16 19:05:32,220 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:32,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2878 states. [2020-01-16 19:05:32,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2878 to 1567. [2020-01-16 19:05:32,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 19:05:32,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7025 transitions. [2020-01-16 19:05:32,288 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7025 transitions. Word has length 28 [2020-01-16 19:05:32,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:32,288 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7025 transitions. [2020-01-16 19:05:32,288 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:32,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7025 transitions. [2020-01-16 19:05:32,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:32,290 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:32,290 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:32,290 INFO L426 AbstractCegarLoop]: === Iteration 455 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:32,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:32,291 INFO L82 PathProgramCache]: Analyzing trace with hash 477967264, now seen corresponding path program 447 times [2020-01-16 19:05:32,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:32,291 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814594224] [2020-01-16 19:05:32,291 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:32,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:32,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:32,813 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814594224] [2020-01-16 19:05:32,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:32,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:32,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733444849] [2020-01-16 19:05:32,814 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:32,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:32,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:32,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:32,814 INFO L87 Difference]: Start difference. First operand 1567 states and 7025 transitions. Second operand 11 states. [2020-01-16 19:05:33,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:33,030 INFO L93 Difference]: Finished difference Result 2901 states and 11591 transitions. [2020-01-16 19:05:33,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:33,031 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:33,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:33,038 INFO L225 Difference]: With dead ends: 2901 [2020-01-16 19:05:33,038 INFO L226 Difference]: Without dead ends: 2886 [2020-01-16 19:05:33,038 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:33,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2886 states. [2020-01-16 19:05:33,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2886 to 1572. [2020-01-16 19:05:33,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 19:05:33,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7034 transitions. [2020-01-16 19:05:33,106 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7034 transitions. Word has length 28 [2020-01-16 19:05:33,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:33,106 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7034 transitions. [2020-01-16 19:05:33,106 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:33,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7034 transitions. [2020-01-16 19:05:33,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:33,109 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:33,109 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:33,109 INFO L426 AbstractCegarLoop]: === Iteration 456 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:33,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:33,109 INFO L82 PathProgramCache]: Analyzing trace with hash 2140619952, now seen corresponding path program 448 times [2020-01-16 19:05:33,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:33,109 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090988310] [2020-01-16 19:05:33,109 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:33,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:33,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:33,625 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090988310] [2020-01-16 19:05:33,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:33,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:33,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718167469] [2020-01-16 19:05:33,626 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:33,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:33,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:33,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:33,626 INFO L87 Difference]: Start difference. First operand 1572 states and 7034 transitions. Second operand 11 states. [2020-01-16 19:05:33,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:33,825 INFO L93 Difference]: Finished difference Result 2903 states and 11590 transitions. [2020-01-16 19:05:33,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:33,825 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:33,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:33,832 INFO L225 Difference]: With dead ends: 2903 [2020-01-16 19:05:33,832 INFO L226 Difference]: Without dead ends: 2881 [2020-01-16 19:05:33,832 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:33,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2881 states. [2020-01-16 19:05:33,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2881 to 1567. [2020-01-16 19:05:33,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 19:05:33,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7021 transitions. [2020-01-16 19:05:33,902 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7021 transitions. Word has length 28 [2020-01-16 19:05:33,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:33,902 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7021 transitions. [2020-01-16 19:05:33,902 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:33,902 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7021 transitions. [2020-01-16 19:05:33,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:33,904 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:33,904 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:33,904 INFO L426 AbstractCegarLoop]: === Iteration 457 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:33,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:33,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1726926112, now seen corresponding path program 449 times [2020-01-16 19:05:33,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:33,905 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87547296] [2020-01-16 19:05:33,905 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:33,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:34,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:34,441 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87547296] [2020-01-16 19:05:34,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:34,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:34,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296180602] [2020-01-16 19:05:34,441 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:34,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:34,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:34,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:34,442 INFO L87 Difference]: Start difference. First operand 1567 states and 7021 transitions. Second operand 11 states. [2020-01-16 19:05:34,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:34,643 INFO L93 Difference]: Finished difference Result 2898 states and 11580 transitions. [2020-01-16 19:05:34,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:34,643 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:34,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:34,650 INFO L225 Difference]: With dead ends: 2898 [2020-01-16 19:05:34,650 INFO L226 Difference]: Without dead ends: 2884 [2020-01-16 19:05:34,650 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:34,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2884 states. [2020-01-16 19:05:34,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2884 to 1571. [2020-01-16 19:05:34,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:05:34,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7028 transitions. [2020-01-16 19:05:34,716 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7028 transitions. Word has length 28 [2020-01-16 19:05:34,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:34,716 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7028 transitions. [2020-01-16 19:05:34,716 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:34,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7028 transitions. [2020-01-16 19:05:34,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:34,718 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:34,719 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:34,719 INFO L426 AbstractCegarLoop]: === Iteration 458 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:34,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:34,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1078636188, now seen corresponding path program 450 times [2020-01-16 19:05:34,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:34,719 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234625203] [2020-01-16 19:05:34,719 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:34,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:35,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:35,222 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234625203] [2020-01-16 19:05:35,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:35,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:35,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143802704] [2020-01-16 19:05:35,223 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:35,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:35,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:35,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:35,223 INFO L87 Difference]: Start difference. First operand 1571 states and 7028 transitions. Second operand 11 states. [2020-01-16 19:05:35,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:35,430 INFO L93 Difference]: Finished difference Result 2901 states and 11582 transitions. [2020-01-16 19:05:35,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:35,430 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:35,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:35,438 INFO L225 Difference]: With dead ends: 2901 [2020-01-16 19:05:35,438 INFO L226 Difference]: Without dead ends: 2876 [2020-01-16 19:05:35,438 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:35,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2876 states. [2020-01-16 19:05:35,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2876 to 1563. [2020-01-16 19:05:35,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 19:05:35,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7010 transitions. [2020-01-16 19:05:35,504 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7010 transitions. Word has length 28 [2020-01-16 19:05:35,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:35,504 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7010 transitions. [2020-01-16 19:05:35,504 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:35,505 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7010 transitions. [2020-01-16 19:05:35,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:35,507 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:35,507 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:35,507 INFO L426 AbstractCegarLoop]: === Iteration 459 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:35,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:35,507 INFO L82 PathProgramCache]: Analyzing trace with hash -478297846, now seen corresponding path program 451 times [2020-01-16 19:05:35,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:35,507 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115763882] [2020-01-16 19:05:35,507 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:35,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:36,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:36,016 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115763882] [2020-01-16 19:05:36,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:36,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:36,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440925321] [2020-01-16 19:05:36,016 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:36,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:36,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:36,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:36,017 INFO L87 Difference]: Start difference. First operand 1563 states and 7010 transitions. Second operand 11 states. [2020-01-16 19:05:36,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:36,197 INFO L93 Difference]: Finished difference Result 2908 states and 11606 transitions. [2020-01-16 19:05:36,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:36,198 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:36,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:36,205 INFO L225 Difference]: With dead ends: 2908 [2020-01-16 19:05:36,205 INFO L226 Difference]: Without dead ends: 2890 [2020-01-16 19:05:36,205 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:36,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2890 states. [2020-01-16 19:05:36,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2890 to 1571. [2020-01-16 19:05:36,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:05:36,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7032 transitions. [2020-01-16 19:05:36,272 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7032 transitions. Word has length 28 [2020-01-16 19:05:36,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:36,272 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7032 transitions. [2020-01-16 19:05:36,272 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:36,272 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7032 transitions. [2020-01-16 19:05:36,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:36,274 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:36,274 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:36,274 INFO L426 AbstractCegarLoop]: === Iteration 460 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:36,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:36,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1755809648, now seen corresponding path program 452 times [2020-01-16 19:05:36,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:36,275 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884441924] [2020-01-16 19:05:36,275 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:36,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:36,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:36,783 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884441924] [2020-01-16 19:05:36,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:36,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:36,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054193708] [2020-01-16 19:05:36,784 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:36,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:36,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:36,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:36,784 INFO L87 Difference]: Start difference. First operand 1571 states and 7032 transitions. Second operand 11 states. [2020-01-16 19:05:36,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:36,959 INFO L93 Difference]: Finished difference Result 2904 states and 11594 transitions. [2020-01-16 19:05:36,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:36,959 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:36,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:36,967 INFO L225 Difference]: With dead ends: 2904 [2020-01-16 19:05:36,967 INFO L226 Difference]: Without dead ends: 2886 [2020-01-16 19:05:36,967 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:37,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2886 states. [2020-01-16 19:05:37,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2886 to 1567. [2020-01-16 19:05:37,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 19:05:37,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7021 transitions. [2020-01-16 19:05:37,033 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7021 transitions. Word has length 28 [2020-01-16 19:05:37,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:37,033 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7021 transitions. [2020-01-16 19:05:37,034 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:37,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7021 transitions. [2020-01-16 19:05:37,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:37,036 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:37,036 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:37,036 INFO L426 AbstractCegarLoop]: === Iteration 461 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:37,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:37,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1551383226, now seen corresponding path program 453 times [2020-01-16 19:05:37,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:37,036 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778026147] [2020-01-16 19:05:37,036 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:37,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:37,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:37,562 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778026147] [2020-01-16 19:05:37,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:37,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:37,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915203618] [2020-01-16 19:05:37,563 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:37,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:37,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:37,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:37,563 INFO L87 Difference]: Start difference. First operand 1567 states and 7021 transitions. Second operand 11 states. [2020-01-16 19:05:37,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:37,772 INFO L93 Difference]: Finished difference Result 2914 states and 11617 transitions. [2020-01-16 19:05:37,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:37,772 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:37,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:37,779 INFO L225 Difference]: With dead ends: 2914 [2020-01-16 19:05:37,779 INFO L226 Difference]: Without dead ends: 2896 [2020-01-16 19:05:37,779 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:37,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2896 states. [2020-01-16 19:05:37,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2896 to 1574. [2020-01-16 19:05:37,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 19:05:37,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7034 transitions. [2020-01-16 19:05:37,846 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7034 transitions. Word has length 28 [2020-01-16 19:05:37,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:37,846 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7034 transitions. [2020-01-16 19:05:37,846 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:37,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7034 transitions. [2020-01-16 19:05:37,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:37,848 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:37,848 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:37,848 INFO L426 AbstractCegarLoop]: === Iteration 462 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:37,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:37,848 INFO L82 PathProgramCache]: Analyzing trace with hash -2122838032, now seen corresponding path program 454 times [2020-01-16 19:05:37,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:37,849 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139801824] [2020-01-16 19:05:37,849 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:37,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:38,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:38,367 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139801824] [2020-01-16 19:05:38,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:38,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:38,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857504868] [2020-01-16 19:05:38,367 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:38,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:38,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:38,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:38,368 INFO L87 Difference]: Start difference. First operand 1574 states and 7034 transitions. Second operand 11 states. [2020-01-16 19:05:38,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:38,562 INFO L93 Difference]: Finished difference Result 2913 states and 11608 transitions. [2020-01-16 19:05:38,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:38,562 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:38,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:38,569 INFO L225 Difference]: With dead ends: 2913 [2020-01-16 19:05:38,569 INFO L226 Difference]: Without dead ends: 2889 [2020-01-16 19:05:38,569 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:38,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2889 states. [2020-01-16 19:05:38,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2889 to 1567. [2020-01-16 19:05:38,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 19:05:38,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7017 transitions. [2020-01-16 19:05:38,634 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7017 transitions. Word has length 28 [2020-01-16 19:05:38,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:38,635 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7017 transitions. [2020-01-16 19:05:38,635 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:38,635 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7017 transitions. [2020-01-16 19:05:38,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:38,637 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:38,637 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:38,637 INFO L426 AbstractCegarLoop]: === Iteration 463 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:38,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:38,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1220579846, now seen corresponding path program 455 times [2020-01-16 19:05:38,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:38,638 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005157854] [2020-01-16 19:05:38,638 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:38,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:39,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:39,169 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005157854] [2020-01-16 19:05:39,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:39,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:39,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369284563] [2020-01-16 19:05:39,169 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:39,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:39,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:39,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:39,170 INFO L87 Difference]: Start difference. First operand 1567 states and 7017 transitions. Second operand 11 states. [2020-01-16 19:05:39,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:39,395 INFO L93 Difference]: Finished difference Result 2903 states and 11588 transitions. [2020-01-16 19:05:39,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:39,395 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:39,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:39,402 INFO L225 Difference]: With dead ends: 2903 [2020-01-16 19:05:39,402 INFO L226 Difference]: Without dead ends: 2889 [2020-01-16 19:05:39,403 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:39,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2889 states. [2020-01-16 19:05:39,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2889 to 1571. [2020-01-16 19:05:39,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:05:39,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7024 transitions. [2020-01-16 19:05:39,468 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7024 transitions. Word has length 28 [2020-01-16 19:05:39,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:39,468 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7024 transitions. [2020-01-16 19:05:39,468 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:39,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7024 transitions. [2020-01-16 19:05:39,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:39,470 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:39,470 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:39,470 INFO L426 AbstractCegarLoop]: === Iteration 464 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:39,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:39,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1584982454, now seen corresponding path program 456 times [2020-01-16 19:05:39,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:39,471 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461669237] [2020-01-16 19:05:39,471 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:39,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:40,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:40,006 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461669237] [2020-01-16 19:05:40,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:40,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:40,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675390058] [2020-01-16 19:05:40,007 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:40,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:40,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:40,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:40,007 INFO L87 Difference]: Start difference. First operand 1571 states and 7024 transitions. Second operand 11 states. [2020-01-16 19:05:40,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:40,226 INFO L93 Difference]: Finished difference Result 2906 states and 11590 transitions. [2020-01-16 19:05:40,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:40,227 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:40,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:40,234 INFO L225 Difference]: With dead ends: 2906 [2020-01-16 19:05:40,234 INFO L226 Difference]: Without dead ends: 2877 [2020-01-16 19:05:40,234 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:40,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2877 states. [2020-01-16 19:05:40,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2877 to 1559. [2020-01-16 19:05:40,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1559 states. [2020-01-16 19:05:40,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 6999 transitions. [2020-01-16 19:05:40,300 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 6999 transitions. Word has length 28 [2020-01-16 19:05:40,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:40,300 INFO L478 AbstractCegarLoop]: Abstraction has 1559 states and 6999 transitions. [2020-01-16 19:05:40,300 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:40,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 6999 transitions. [2020-01-16 19:05:40,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:40,302 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:40,302 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:40,302 INFO L426 AbstractCegarLoop]: === Iteration 465 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:40,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:40,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1188275872, now seen corresponding path program 457 times [2020-01-16 19:05:40,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:40,303 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253755592] [2020-01-16 19:05:40,303 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:40,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:40,799 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 19:05:40,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:40,806 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253755592] [2020-01-16 19:05:40,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:40,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:40,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192482333] [2020-01-16 19:05:40,806 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:40,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:40,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:40,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:40,807 INFO L87 Difference]: Start difference. First operand 1559 states and 6999 transitions. Second operand 11 states. [2020-01-16 19:05:41,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:41,015 INFO L93 Difference]: Finished difference Result 2912 states and 11627 transitions. [2020-01-16 19:05:41,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:41,015 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:41,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:41,023 INFO L225 Difference]: With dead ends: 2912 [2020-01-16 19:05:41,023 INFO L226 Difference]: Without dead ends: 2896 [2020-01-16 19:05:41,023 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:41,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2896 states. [2020-01-16 19:05:41,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2896 to 1573. [2020-01-16 19:05:41,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:05:41,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7044 transitions. [2020-01-16 19:05:41,089 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7044 transitions. Word has length 28 [2020-01-16 19:05:41,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:41,089 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7044 transitions. [2020-01-16 19:05:41,089 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:41,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7044 transitions. [2020-01-16 19:05:41,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:41,091 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:41,091 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:41,092 INFO L426 AbstractCegarLoop]: === Iteration 466 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:41,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:41,092 INFO L82 PathProgramCache]: Analyzing trace with hash 301129124, now seen corresponding path program 458 times [2020-01-16 19:05:41,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:41,092 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552115771] [2020-01-16 19:05:41,092 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:41,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:41,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:41,610 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552115771] [2020-01-16 19:05:41,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:41,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:41,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97875398] [2020-01-16 19:05:41,610 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:41,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:41,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:41,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:41,611 INFO L87 Difference]: Start difference. First operand 1573 states and 7044 transitions. Second operand 11 states. [2020-01-16 19:05:41,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:41,787 INFO L93 Difference]: Finished difference Result 2914 states and 11625 transitions. [2020-01-16 19:05:41,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:41,787 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:41,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:41,794 INFO L225 Difference]: With dead ends: 2914 [2020-01-16 19:05:41,795 INFO L226 Difference]: Without dead ends: 2890 [2020-01-16 19:05:41,795 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:41,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2890 states. [2020-01-16 19:05:41,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2890 to 1567. [2020-01-16 19:05:41,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 19:05:41,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7029 transitions. [2020-01-16 19:05:41,861 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7029 transitions. Word has length 28 [2020-01-16 19:05:41,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:41,861 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7029 transitions. [2020-01-16 19:05:41,861 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:41,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7029 transitions. [2020-01-16 19:05:41,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:41,863 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:41,863 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:41,863 INFO L426 AbstractCegarLoop]: === Iteration 467 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:41,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:41,863 INFO L82 PathProgramCache]: Analyzing trace with hash -650420294, now seen corresponding path program 459 times [2020-01-16 19:05:41,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:41,864 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706273502] [2020-01-16 19:05:41,864 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:41,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:42,375 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 19:05:42,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:42,382 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706273502] [2020-01-16 19:05:42,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:42,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:42,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315524803] [2020-01-16 19:05:42,382 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:42,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:42,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:42,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:42,383 INFO L87 Difference]: Start difference. First operand 1567 states and 7029 transitions. Second operand 11 states. [2020-01-16 19:05:42,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:42,589 INFO L93 Difference]: Finished difference Result 2906 states and 11609 transitions. [2020-01-16 19:05:42,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:42,589 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:42,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:42,596 INFO L225 Difference]: With dead ends: 2906 [2020-01-16 19:05:42,596 INFO L226 Difference]: Without dead ends: 2890 [2020-01-16 19:05:42,597 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:42,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2890 states. [2020-01-16 19:05:42,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2890 to 1571. [2020-01-16 19:05:42,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:05:42,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7036 transitions. [2020-01-16 19:05:42,662 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7036 transitions. Word has length 28 [2020-01-16 19:05:42,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:42,662 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7036 transitions. [2020-01-16 19:05:42,662 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:42,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7036 transitions. [2020-01-16 19:05:42,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:42,664 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:42,664 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:42,665 INFO L426 AbstractCegarLoop]: === Iteration 468 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:42,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:42,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1221875100, now seen corresponding path program 460 times [2020-01-16 19:05:42,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:42,665 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647417134] [2020-01-16 19:05:42,665 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:42,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:43,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:43,189 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647417134] [2020-01-16 19:05:43,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:43,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:43,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727500811] [2020-01-16 19:05:43,190 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:43,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:43,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:43,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:43,190 INFO L87 Difference]: Start difference. First operand 1571 states and 7036 transitions. Second operand 11 states. [2020-01-16 19:05:43,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:43,414 INFO L93 Difference]: Finished difference Result 2904 states and 11601 transitions. [2020-01-16 19:05:43,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:43,414 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:43,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:43,422 INFO L225 Difference]: With dead ends: 2904 [2020-01-16 19:05:43,422 INFO L226 Difference]: Without dead ends: 2886 [2020-01-16 19:05:43,422 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:43,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2886 states. [2020-01-16 19:05:43,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2886 to 1567. [2020-01-16 19:05:43,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 19:05:43,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7025 transitions. [2020-01-16 19:05:43,487 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7025 transitions. Word has length 28 [2020-01-16 19:05:43,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:43,487 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7025 transitions. [2020-01-16 19:05:43,487 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:43,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7025 transitions. [2020-01-16 19:05:43,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:43,490 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:43,490 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:43,490 INFO L426 AbstractCegarLoop]: === Iteration 469 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:43,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:43,490 INFO L82 PathProgramCache]: Analyzing trace with hash -234100678, now seen corresponding path program 461 times [2020-01-16 19:05:43,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:43,490 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338163945] [2020-01-16 19:05:43,490 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:43,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:44,011 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 19:05:44,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:44,018 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338163945] [2020-01-16 19:05:44,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:44,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:44,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691736618] [2020-01-16 19:05:44,019 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:44,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:44,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:44,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:44,019 INFO L87 Difference]: Start difference. First operand 1567 states and 7025 transitions. Second operand 11 states. [2020-01-16 19:05:44,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:44,220 INFO L93 Difference]: Finished difference Result 2910 states and 11613 transitions. [2020-01-16 19:05:44,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:44,221 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:44,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:44,228 INFO L225 Difference]: With dead ends: 2910 [2020-01-16 19:05:44,228 INFO L226 Difference]: Without dead ends: 2892 [2020-01-16 19:05:44,229 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:44,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2892 states. [2020-01-16 19:05:44,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2892 to 1571. [2020-01-16 19:05:44,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:05:44,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7032 transitions. [2020-01-16 19:05:44,294 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7032 transitions. Word has length 28 [2020-01-16 19:05:44,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:44,295 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7032 transitions. [2020-01-16 19:05:44,295 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:44,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7032 transitions. [2020-01-16 19:05:44,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:44,297 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:44,297 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:44,297 INFO L426 AbstractCegarLoop]: === Iteration 470 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:44,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:44,297 INFO L82 PathProgramCache]: Analyzing trace with hash 2000006816, now seen corresponding path program 462 times [2020-01-16 19:05:44,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:44,297 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650786256] [2020-01-16 19:05:44,298 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:44,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:44,818 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 19:05:44,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:44,825 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650786256] [2020-01-16 19:05:44,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:44,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:44,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025463524] [2020-01-16 19:05:44,825 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:44,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:44,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:44,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:44,826 INFO L87 Difference]: Start difference. First operand 1571 states and 7032 transitions. Second operand 11 states. [2020-01-16 19:05:45,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:45,023 INFO L93 Difference]: Finished difference Result 2906 states and 11601 transitions. [2020-01-16 19:05:45,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:45,023 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:45,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:45,030 INFO L225 Difference]: With dead ends: 2906 [2020-01-16 19:05:45,030 INFO L226 Difference]: Without dead ends: 2884 [2020-01-16 19:05:45,030 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:45,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2884 states. [2020-01-16 19:05:45,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2884 to 1563. [2020-01-16 19:05:45,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 19:05:45,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7014 transitions. [2020-01-16 19:05:45,096 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7014 transitions. Word has length 28 [2020-01-16 19:05:45,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:45,096 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7014 transitions. [2020-01-16 19:05:45,096 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:45,096 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7014 transitions. [2020-01-16 19:05:45,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:45,098 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:45,098 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:45,098 INFO L426 AbstractCegarLoop]: === Iteration 471 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:45,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:45,099 INFO L82 PathProgramCache]: Analyzing trace with hash -94184284, now seen corresponding path program 463 times [2020-01-16 19:05:45,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:45,099 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105410004] [2020-01-16 19:05:45,099 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:45,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:45,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:45,656 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105410004] [2020-01-16 19:05:45,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:45,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:45,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989734186] [2020-01-16 19:05:45,657 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:45,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:45,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:45,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:45,657 INFO L87 Difference]: Start difference. First operand 1563 states and 7014 transitions. Second operand 11 states. [2020-01-16 19:05:45,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:45,862 INFO L93 Difference]: Finished difference Result 2922 states and 11652 transitions. [2020-01-16 19:05:45,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:45,863 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:45,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:45,870 INFO L225 Difference]: With dead ends: 2922 [2020-01-16 19:05:45,870 INFO L226 Difference]: Without dead ends: 2906 [2020-01-16 19:05:45,870 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:45,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2906 states. [2020-01-16 19:05:45,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2906 to 1575. [2020-01-16 19:05:45,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:05:45,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7048 transitions. [2020-01-16 19:05:45,936 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7048 transitions. Word has length 28 [2020-01-16 19:05:45,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:45,936 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7048 transitions. [2020-01-16 19:05:45,936 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:45,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7048 transitions. [2020-01-16 19:05:45,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:45,939 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:45,939 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:45,939 INFO L426 AbstractCegarLoop]: === Iteration 472 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:45,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:45,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1395220712, now seen corresponding path program 464 times [2020-01-16 19:05:45,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:45,939 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737821705] [2020-01-16 19:05:45,939 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:45,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:46,465 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 19:05:46,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:46,472 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737821705] [2020-01-16 19:05:46,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:46,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:46,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997736548] [2020-01-16 19:05:46,472 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:46,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:46,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:46,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:46,473 INFO L87 Difference]: Start difference. First operand 1575 states and 7048 transitions. Second operand 11 states. [2020-01-16 19:05:46,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:46,658 INFO L93 Difference]: Finished difference Result 2924 states and 11650 transitions. [2020-01-16 19:05:46,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:46,658 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:46,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:46,665 INFO L225 Difference]: With dead ends: 2924 [2020-01-16 19:05:46,666 INFO L226 Difference]: Without dead ends: 2900 [2020-01-16 19:05:46,666 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:46,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2900 states. [2020-01-16 19:05:46,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2900 to 1569. [2020-01-16 19:05:46,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 19:05:46,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7031 transitions. [2020-01-16 19:05:46,731 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7031 transitions. Word has length 28 [2020-01-16 19:05:46,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:46,731 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7031 transitions. [2020-01-16 19:05:46,732 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:46,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7031 transitions. [2020-01-16 19:05:46,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:46,734 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:46,734 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:46,734 INFO L426 AbstractCegarLoop]: === Iteration 473 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:46,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:46,734 INFO L82 PathProgramCache]: Analyzing trace with hash -629414086, now seen corresponding path program 465 times [2020-01-16 19:05:46,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:46,735 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629195731] [2020-01-16 19:05:46,735 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:46,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:47,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:47,273 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629195731] [2020-01-16 19:05:47,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:47,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:47,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805549149] [2020-01-16 19:05:47,273 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:47,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:47,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:47,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:47,274 INFO L87 Difference]: Start difference. First operand 1569 states and 7031 transitions. Second operand 11 states. [2020-01-16 19:05:47,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:47,537 INFO L93 Difference]: Finished difference Result 2921 states and 11644 transitions. [2020-01-16 19:05:47,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:47,537 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:47,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:47,544 INFO L225 Difference]: With dead ends: 2921 [2020-01-16 19:05:47,545 INFO L226 Difference]: Without dead ends: 2905 [2020-01-16 19:05:47,545 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:47,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2905 states. [2020-01-16 19:05:47,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2905 to 1575. [2020-01-16 19:05:47,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:05:47,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7042 transitions. [2020-01-16 19:05:47,610 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7042 transitions. Word has length 28 [2020-01-16 19:05:47,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:47,611 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7042 transitions. [2020-01-16 19:05:47,611 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:47,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7042 transitions. [2020-01-16 19:05:47,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:47,613 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:47,613 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:47,613 INFO L426 AbstractCegarLoop]: === Iteration 474 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:47,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:47,613 INFO L82 PathProgramCache]: Analyzing trace with hash 288536104, now seen corresponding path program 466 times [2020-01-16 19:05:47,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:47,614 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021281447] [2020-01-16 19:05:47,614 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:47,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:48,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:48,153 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021281447] [2020-01-16 19:05:48,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:48,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:48,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509698207] [2020-01-16 19:05:48,153 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:48,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:48,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:48,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:48,154 INFO L87 Difference]: Start difference. First operand 1575 states and 7042 transitions. Second operand 11 states. [2020-01-16 19:05:48,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:48,366 INFO L93 Difference]: Finished difference Result 2922 states and 11640 transitions. [2020-01-16 19:05:48,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:48,366 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:48,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:48,373 INFO L225 Difference]: With dead ends: 2922 [2020-01-16 19:05:48,374 INFO L226 Difference]: Without dead ends: 2899 [2020-01-16 19:05:48,374 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:48,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-01-16 19:05:48,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1569. [2020-01-16 19:05:48,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 19:05:48,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7025 transitions. [2020-01-16 19:05:48,440 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7025 transitions. Word has length 28 [2020-01-16 19:05:48,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:48,440 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7025 transitions. [2020-01-16 19:05:48,440 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:48,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7025 transitions. [2020-01-16 19:05:48,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:48,443 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:48,443 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:48,443 INFO L426 AbstractCegarLoop]: === Iteration 475 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:48,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:48,443 INFO L82 PathProgramCache]: Analyzing trace with hash -213094470, now seen corresponding path program 467 times [2020-01-16 19:05:48,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:48,443 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905158176] [2020-01-16 19:05:48,443 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:48,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:48,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:48,968 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905158176] [2020-01-16 19:05:48,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:48,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:48,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967418623] [2020-01-16 19:05:48,969 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:48,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:48,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:48,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:48,969 INFO L87 Difference]: Start difference. First operand 1569 states and 7025 transitions. Second operand 11 states. [2020-01-16 19:05:49,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:49,228 INFO L93 Difference]: Finished difference Result 2926 states and 11649 transitions. [2020-01-16 19:05:49,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:49,229 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:49,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:49,236 INFO L225 Difference]: With dead ends: 2926 [2020-01-16 19:05:49,237 INFO L226 Difference]: Without dead ends: 2908 [2020-01-16 19:05:49,237 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:49,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2020-01-16 19:05:49,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 1576. [2020-01-16 19:05:49,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 19:05:49,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7038 transitions. [2020-01-16 19:05:49,302 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7038 transitions. Word has length 28 [2020-01-16 19:05:49,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:49,302 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7038 transitions. [2020-01-16 19:05:49,302 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:49,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7038 transitions. [2020-01-16 19:05:49,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:49,304 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:49,305 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:49,305 INFO L426 AbstractCegarLoop]: === Iteration 476 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:49,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:49,305 INFO L82 PathProgramCache]: Analyzing trace with hash -784549276, now seen corresponding path program 468 times [2020-01-16 19:05:49,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:49,305 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607891748] [2020-01-16 19:05:49,305 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:49,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:49,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:49,840 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607891748] [2020-01-16 19:05:49,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:49,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:49,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882386946] [2020-01-16 19:05:49,841 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:49,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:49,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:49,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:49,841 INFO L87 Difference]: Start difference. First operand 1576 states and 7038 transitions. Second operand 11 states. [2020-01-16 19:05:50,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:50,054 INFO L93 Difference]: Finished difference Result 2925 states and 11640 transitions. [2020-01-16 19:05:50,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:50,055 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:50,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:50,062 INFO L225 Difference]: With dead ends: 2925 [2020-01-16 19:05:50,062 INFO L226 Difference]: Without dead ends: 2895 [2020-01-16 19:05:50,062 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:50,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2895 states. [2020-01-16 19:05:50,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2895 to 1563. [2020-01-16 19:05:50,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 19:05:50,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7010 transitions. [2020-01-16 19:05:50,127 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7010 transitions. Word has length 28 [2020-01-16 19:05:50,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:50,128 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7010 transitions. [2020-01-16 19:05:50,128 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:50,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7010 transitions. [2020-01-16 19:05:50,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:50,130 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:50,130 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:50,130 INFO L426 AbstractCegarLoop]: === Iteration 477 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:50,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:50,130 INFO L82 PathProgramCache]: Analyzing trace with hash -62674972, now seen corresponding path program 469 times [2020-01-16 19:05:50,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:50,130 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178259484] [2020-01-16 19:05:50,131 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:50,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:50,649 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 19:05:50,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:50,656 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178259484] [2020-01-16 19:05:50,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:50,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:50,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733345999] [2020-01-16 19:05:50,656 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:50,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:50,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:50,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:50,656 INFO L87 Difference]: Start difference. First operand 1563 states and 7010 transitions. Second operand 11 states. [2020-01-16 19:05:50,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:50,863 INFO L93 Difference]: Finished difference Result 2905 states and 11603 transitions. [2020-01-16 19:05:50,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:50,864 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:50,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:50,871 INFO L225 Difference]: With dead ends: 2905 [2020-01-16 19:05:50,871 INFO L226 Difference]: Without dead ends: 2889 [2020-01-16 19:05:50,872 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:50,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2889 states. [2020-01-16 19:05:50,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2889 to 1571. [2020-01-16 19:05:50,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:05:50,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7032 transitions. [2020-01-16 19:05:50,958 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7032 transitions. Word has length 28 [2020-01-16 19:05:50,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:50,958 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7032 transitions. [2020-01-16 19:05:50,958 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:50,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7032 transitions. [2020-01-16 19:05:50,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:50,960 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:50,960 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:50,960 INFO L426 AbstractCegarLoop]: === Iteration 478 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:50,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:50,961 INFO L82 PathProgramCache]: Analyzing trace with hash -634129778, now seen corresponding path program 470 times [2020-01-16 19:05:50,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:50,961 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823546694] [2020-01-16 19:05:50,961 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:50,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:51,475 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 19:05:51,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:51,482 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823546694] [2020-01-16 19:05:51,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:51,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:51,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522747540] [2020-01-16 19:05:51,483 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:51,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:51,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:51,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:51,483 INFO L87 Difference]: Start difference. First operand 1571 states and 7032 transitions. Second operand 11 states. [2020-01-16 19:05:51,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:51,692 INFO L93 Difference]: Finished difference Result 2903 states and 11595 transitions. [2020-01-16 19:05:51,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:51,693 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:51,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:51,700 INFO L225 Difference]: With dead ends: 2903 [2020-01-16 19:05:51,700 INFO L226 Difference]: Without dead ends: 2885 [2020-01-16 19:05:51,701 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:51,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2885 states. [2020-01-16 19:05:51,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2885 to 1567. [2020-01-16 19:05:51,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 19:05:51,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7021 transitions. [2020-01-16 19:05:51,766 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7021 transitions. Word has length 28 [2020-01-16 19:05:51,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:51,766 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7021 transitions. [2020-01-16 19:05:51,766 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:51,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7021 transitions. [2020-01-16 19:05:51,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:51,769 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:51,769 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:51,769 INFO L426 AbstractCegarLoop]: === Iteration 479 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:51,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:51,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1135760352, now seen corresponding path program 471 times [2020-01-16 19:05:51,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:51,769 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155688007] [2020-01-16 19:05:51,769 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:51,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:52,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:52,284 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155688007] [2020-01-16 19:05:52,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:52,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:52,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056573181] [2020-01-16 19:05:52,285 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:52,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:52,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:52,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:52,285 INFO L87 Difference]: Start difference. First operand 1567 states and 7021 transitions. Second operand 11 states. [2020-01-16 19:05:52,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:52,475 INFO L93 Difference]: Finished difference Result 2910 states and 11611 transitions. [2020-01-16 19:05:52,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:52,475 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:52,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:52,482 INFO L225 Difference]: With dead ends: 2910 [2020-01-16 19:05:52,482 INFO L226 Difference]: Without dead ends: 2894 [2020-01-16 19:05:52,482 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:52,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2020-01-16 19:05:52,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 1573. [2020-01-16 19:05:52,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:05:52,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7032 transitions. [2020-01-16 19:05:52,549 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7032 transitions. Word has length 28 [2020-01-16 19:05:52,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:52,549 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7032 transitions. [2020-01-16 19:05:52,549 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:52,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7032 transitions. [2020-01-16 19:05:52,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:52,551 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:52,551 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:52,551 INFO L426 AbstractCegarLoop]: === Iteration 480 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:52,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:52,551 INFO L82 PathProgramCache]: Analyzing trace with hash -217810162, now seen corresponding path program 472 times [2020-01-16 19:05:52,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:52,552 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063855227] [2020-01-16 19:05:52,552 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:52,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:53,066 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 19:05:53,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:53,073 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063855227] [2020-01-16 19:05:53,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:53,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:53,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675276309] [2020-01-16 19:05:53,073 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:53,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:53,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:53,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:53,074 INFO L87 Difference]: Start difference. First operand 1573 states and 7032 transitions. Second operand 11 states. [2020-01-16 19:05:53,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:53,350 INFO L93 Difference]: Finished difference Result 2911 states and 11607 transitions. [2020-01-16 19:05:53,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:53,351 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:53,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:53,358 INFO L225 Difference]: With dead ends: 2911 [2020-01-16 19:05:53,359 INFO L226 Difference]: Without dead ends: 2888 [2020-01-16 19:05:53,359 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:53,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2888 states. [2020-01-16 19:05:53,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2888 to 1567. [2020-01-16 19:05:53,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 19:05:53,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7017 transitions. [2020-01-16 19:05:53,424 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7017 transitions. Word has length 28 [2020-01-16 19:05:53,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:53,424 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7017 transitions. [2020-01-16 19:05:53,424 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:53,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7017 transitions. [2020-01-16 19:05:53,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:53,426 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:53,427 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:53,427 INFO L426 AbstractCegarLoop]: === Iteration 481 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:53,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:53,427 INFO L82 PathProgramCache]: Analyzing trace with hash 2052522336, now seen corresponding path program 473 times [2020-01-16 19:05:53,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:53,427 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318158325] [2020-01-16 19:05:53,427 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:53,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:53,953 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 19:05:53,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:53,960 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318158325] [2020-01-16 19:05:53,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:53,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:53,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895096854] [2020-01-16 19:05:53,960 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:53,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:53,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:53,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:53,961 INFO L87 Difference]: Start difference. First operand 1567 states and 7017 transitions. Second operand 11 states. [2020-01-16 19:05:54,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:54,154 INFO L93 Difference]: Finished difference Result 2904 states and 11593 transitions. [2020-01-16 19:05:54,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:54,154 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:54,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:54,161 INFO L225 Difference]: With dead ends: 2904 [2020-01-16 19:05:54,161 INFO L226 Difference]: Without dead ends: 2890 [2020-01-16 19:05:54,161 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:54,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2890 states. [2020-01-16 19:05:54,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2890 to 1571. [2020-01-16 19:05:54,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:05:54,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7024 transitions. [2020-01-16 19:05:54,227 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7024 transitions. Word has length 28 [2020-01-16 19:05:54,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:54,227 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7024 transitions. [2020-01-16 19:05:54,227 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:54,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7024 transitions. [2020-01-16 19:05:54,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:54,229 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:54,229 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:54,229 INFO L426 AbstractCegarLoop]: === Iteration 482 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:54,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:54,229 INFO L82 PathProgramCache]: Analyzing trace with hash -753039964, now seen corresponding path program 474 times [2020-01-16 19:05:54,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:54,230 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985443872] [2020-01-16 19:05:54,230 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:54,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:54,752 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 19:05:54,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:54,758 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985443872] [2020-01-16 19:05:54,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:54,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:54,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163751661] [2020-01-16 19:05:54,759 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:54,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:54,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:54,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:54,759 INFO L87 Difference]: Start difference. First operand 1571 states and 7024 transitions. Second operand 11 states. [2020-01-16 19:05:55,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:55,029 INFO L93 Difference]: Finished difference Result 2907 states and 11595 transitions. [2020-01-16 19:05:55,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:55,030 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:55,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:55,037 INFO L225 Difference]: With dead ends: 2907 [2020-01-16 19:05:55,037 INFO L226 Difference]: Without dead ends: 2882 [2020-01-16 19:05:55,037 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:55,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2882 states. [2020-01-16 19:05:55,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2882 to 1563. [2020-01-16 19:05:55,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 19:05:55,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7006 transitions. [2020-01-16 19:05:55,103 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7006 transitions. Word has length 28 [2020-01-16 19:05:55,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:55,103 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7006 transitions. [2020-01-16 19:05:55,103 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:55,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7006 transitions. [2020-01-16 19:05:55,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:55,105 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:55,106 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:55,106 INFO L426 AbstractCegarLoop]: === Iteration 483 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:55,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:55,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1447736232, now seen corresponding path program 475 times [2020-01-16 19:05:55,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:55,106 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855414024] [2020-01-16 19:05:55,106 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:55,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:55,626 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 19:05:55,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:55,633 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855414024] [2020-01-16 19:05:55,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:55,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:55,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667285857] [2020-01-16 19:05:55,634 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:55,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:55,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:55,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:55,634 INFO L87 Difference]: Start difference. First operand 1563 states and 7006 transitions. Second operand 11 states. [2020-01-16 19:05:55,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:55,802 INFO L93 Difference]: Finished difference Result 2912 states and 11614 transitions. [2020-01-16 19:05:55,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:55,802 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:55,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:55,809 INFO L225 Difference]: With dead ends: 2912 [2020-01-16 19:05:55,809 INFO L226 Difference]: Without dead ends: 2894 [2020-01-16 19:05:55,810 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:55,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2020-01-16 19:05:55,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 1571. [2020-01-16 19:05:55,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:05:55,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7028 transitions. [2020-01-16 19:05:55,875 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7028 transitions. Word has length 28 [2020-01-16 19:05:55,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:55,875 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7028 transitions. [2020-01-16 19:05:55,875 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:55,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7028 transitions. [2020-01-16 19:05:55,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:55,878 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:55,878 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:55,878 INFO L426 AbstractCegarLoop]: === Iteration 484 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:55,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:55,878 INFO L82 PathProgramCache]: Analyzing trace with hash -613123570, now seen corresponding path program 476 times [2020-01-16 19:05:55,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:55,878 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086378410] [2020-01-16 19:05:55,878 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:55,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:56,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:56,395 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086378410] [2020-01-16 19:05:56,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:56,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:56,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271674818] [2020-01-16 19:05:56,396 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:56,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:56,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:56,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:56,396 INFO L87 Difference]: Start difference. First operand 1571 states and 7028 transitions. Second operand 11 states. [2020-01-16 19:05:56,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:56,581 INFO L93 Difference]: Finished difference Result 2908 states and 11602 transitions. [2020-01-16 19:05:56,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:56,581 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:56,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:56,588 INFO L225 Difference]: With dead ends: 2908 [2020-01-16 19:05:56,588 INFO L226 Difference]: Without dead ends: 2890 [2020-01-16 19:05:56,588 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:56,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2890 states. [2020-01-16 19:05:56,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2890 to 1567. [2020-01-16 19:05:56,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 19:05:56,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7017 transitions. [2020-01-16 19:05:56,653 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7017 transitions. Word has length 28 [2020-01-16 19:05:56,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:56,654 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7017 transitions. [2020-01-16 19:05:56,654 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:56,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7017 transitions. [2020-01-16 19:05:56,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:56,656 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:56,656 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:56,656 INFO L426 AbstractCegarLoop]: === Iteration 485 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:56,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:56,656 INFO L82 PathProgramCache]: Analyzing trace with hash 374650852, now seen corresponding path program 477 times [2020-01-16 19:05:56,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:56,657 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748078065] [2020-01-16 19:05:56,657 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:56,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:57,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:57,190 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748078065] [2020-01-16 19:05:57,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:57,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:57,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893923932] [2020-01-16 19:05:57,191 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:57,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:57,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:57,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:57,191 INFO L87 Difference]: Start difference. First operand 1567 states and 7017 transitions. Second operand 11 states. [2020-01-16 19:05:57,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:57,366 INFO L93 Difference]: Finished difference Result 2918 states and 11625 transitions. [2020-01-16 19:05:57,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:57,366 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:57,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:57,373 INFO L225 Difference]: With dead ends: 2918 [2020-01-16 19:05:57,373 INFO L226 Difference]: Without dead ends: 2900 [2020-01-16 19:05:57,373 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:57,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2900 states. [2020-01-16 19:05:57,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2900 to 1574. [2020-01-16 19:05:57,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 19:05:57,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7030 transitions. [2020-01-16 19:05:57,439 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7030 transitions. Word has length 28 [2020-01-16 19:05:57,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:57,439 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7030 transitions. [2020-01-16 19:05:57,439 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:57,439 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7030 transitions. [2020-01-16 19:05:57,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:57,441 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:57,441 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:57,441 INFO L426 AbstractCegarLoop]: === Iteration 486 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:57,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:57,441 INFO L82 PathProgramCache]: Analyzing trace with hash -196803954, now seen corresponding path program 478 times [2020-01-16 19:05:57,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:57,442 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568840623] [2020-01-16 19:05:57,442 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:57,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:57,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:57,974 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568840623] [2020-01-16 19:05:57,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:57,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:57,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471188923] [2020-01-16 19:05:57,974 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:57,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:57,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:57,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:57,975 INFO L87 Difference]: Start difference. First operand 1574 states and 7030 transitions. Second operand 11 states. [2020-01-16 19:05:58,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:58,157 INFO L93 Difference]: Finished difference Result 2917 states and 11616 transitions. [2020-01-16 19:05:58,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:58,157 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:58,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:58,164 INFO L225 Difference]: With dead ends: 2917 [2020-01-16 19:05:58,165 INFO L226 Difference]: Without dead ends: 2893 [2020-01-16 19:05:58,165 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:58,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2893 states. [2020-01-16 19:05:58,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2893 to 1567. [2020-01-16 19:05:58,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 19:05:58,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7013 transitions. [2020-01-16 19:05:58,230 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7013 transitions. Word has length 28 [2020-01-16 19:05:58,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:58,230 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7013 transitions. [2020-01-16 19:05:58,231 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:58,231 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7013 transitions. [2020-01-16 19:05:58,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:58,233 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:58,233 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:58,233 INFO L426 AbstractCegarLoop]: === Iteration 487 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:58,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:58,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1148353372, now seen corresponding path program 479 times [2020-01-16 19:05:58,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:58,233 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929552887] [2020-01-16 19:05:58,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:58,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:58,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:58,764 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929552887] [2020-01-16 19:05:58,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:58,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:58,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293590866] [2020-01-16 19:05:58,764 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:58,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:58,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:58,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:58,764 INFO L87 Difference]: Start difference. First operand 1567 states and 7013 transitions. Second operand 11 states. [2020-01-16 19:05:58,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:58,941 INFO L93 Difference]: Finished difference Result 2907 states and 11596 transitions. [2020-01-16 19:05:58,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:58,942 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:58,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:58,949 INFO L225 Difference]: With dead ends: 2907 [2020-01-16 19:05:58,950 INFO L226 Difference]: Without dead ends: 2893 [2020-01-16 19:05:58,950 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:58,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2893 states. [2020-01-16 19:05:59,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2893 to 1571. [2020-01-16 19:05:59,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:05:59,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7020 transitions. [2020-01-16 19:05:59,016 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7020 transitions. Word has length 28 [2020-01-16 19:05:59,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:59,016 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7020 transitions. [2020-01-16 19:05:59,016 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:59,016 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7020 transitions. [2020-01-16 19:05:59,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:59,018 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:59,018 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:59,018 INFO L426 AbstractCegarLoop]: === Iteration 488 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:59,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:59,018 INFO L82 PathProgramCache]: Analyzing trace with hash 341051624, now seen corresponding path program 480 times [2020-01-16 19:05:59,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:59,019 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61867691] [2020-01-16 19:05:59,019 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:59,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:05:59,590 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 19:05:59,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:05:59,599 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61867691] [2020-01-16 19:05:59,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:05:59,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:05:59,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684879759] [2020-01-16 19:05:59,600 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:05:59,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:05:59,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:05:59,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:05:59,601 INFO L87 Difference]: Start difference. First operand 1571 states and 7020 transitions. Second operand 11 states. [2020-01-16 19:05:59,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:05:59,790 INFO L93 Difference]: Finished difference Result 2910 states and 11598 transitions. [2020-01-16 19:05:59,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:05:59,791 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:05:59,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:05:59,797 INFO L225 Difference]: With dead ends: 2910 [2020-01-16 19:05:59,798 INFO L226 Difference]: Without dead ends: 2877 [2020-01-16 19:05:59,798 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:05:59,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2877 states. [2020-01-16 19:05:59,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2877 to 1555. [2020-01-16 19:05:59,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1555 states. [2020-01-16 19:05:59,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 6988 transitions. [2020-01-16 19:05:59,864 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 6988 transitions. Word has length 28 [2020-01-16 19:05:59,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:05:59,864 INFO L478 AbstractCegarLoop]: Abstraction has 1555 states and 6988 transitions. [2020-01-16 19:05:59,864 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:05:59,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 6988 transitions. [2020-01-16 19:05:59,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:05:59,868 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:05:59,868 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:05:59,868 INFO L426 AbstractCegarLoop]: === Iteration 489 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:05:59,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:05:59,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1827506600, now seen corresponding path program 481 times [2020-01-16 19:05:59,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:05:59,868 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595983821] [2020-01-16 19:05:59,869 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:05:59,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:00,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:00,402 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595983821] [2020-01-16 19:06:00,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:00,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:00,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086162992] [2020-01-16 19:06:00,402 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:00,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:00,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:00,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:00,403 INFO L87 Difference]: Start difference. First operand 1555 states and 6988 transitions. Second operand 11 states. [2020-01-16 19:06:00,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:00,583 INFO L93 Difference]: Finished difference Result 2973 states and 11790 transitions. [2020-01-16 19:06:00,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:00,584 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:00,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:00,591 INFO L225 Difference]: With dead ends: 2973 [2020-01-16 19:06:00,591 INFO L226 Difference]: Without dead ends: 2958 [2020-01-16 19:06:00,592 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:00,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2958 states. [2020-01-16 19:06:00,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2958 to 1581. [2020-01-16 19:06:00,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 19:06:00,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7084 transitions. [2020-01-16 19:06:00,658 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7084 transitions. Word has length 28 [2020-01-16 19:06:00,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:00,658 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7084 transitions. [2020-01-16 19:06:00,658 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:00,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7084 transitions. [2020-01-16 19:06:00,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:00,660 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:00,660 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:00,660 INFO L426 AbstractCegarLoop]: === Iteration 490 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:00,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:00,661 INFO L82 PathProgramCache]: Analyzing trace with hash -978055700, now seen corresponding path program 482 times [2020-01-16 19:06:00,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:00,661 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962727471] [2020-01-16 19:06:00,661 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:00,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:01,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:01,192 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962727471] [2020-01-16 19:06:01,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:01,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:01,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907055790] [2020-01-16 19:06:01,193 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:01,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:01,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:01,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:01,193 INFO L87 Difference]: Start difference. First operand 1581 states and 7084 transitions. Second operand 11 states. [2020-01-16 19:06:01,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:01,327 INFO L93 Difference]: Finished difference Result 2978 states and 11794 transitions. [2020-01-16 19:06:01,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:01,328 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:01,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:01,335 INFO L225 Difference]: With dead ends: 2978 [2020-01-16 19:06:01,335 INFO L226 Difference]: Without dead ends: 2952 [2020-01-16 19:06:01,336 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:01,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2020-01-16 19:06:01,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 1575. [2020-01-16 19:06:01,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:06:01,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7067 transitions. [2020-01-16 19:06:01,401 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7067 transitions. Word has length 28 [2020-01-16 19:06:01,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:01,402 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7067 transitions. [2020-01-16 19:06:01,402 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:01,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7067 transitions. [2020-01-16 19:06:01,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:01,404 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:01,404 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:01,404 INFO L426 AbstractCegarLoop]: === Iteration 491 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:01,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:01,404 INFO L82 PathProgramCache]: Analyzing trace with hash -856519738, now seen corresponding path program 483 times [2020-01-16 19:06:01,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:01,404 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894113508] [2020-01-16 19:06:01,405 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:01,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:01,931 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 19:06:01,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:01,938 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894113508] [2020-01-16 19:06:01,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:01,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:01,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895918315] [2020-01-16 19:06:01,938 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:01,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:01,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:01,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:01,939 INFO L87 Difference]: Start difference. First operand 1575 states and 7067 transitions. Second operand 11 states. [2020-01-16 19:06:02,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:02,114 INFO L93 Difference]: Finished difference Result 2970 states and 11779 transitions. [2020-01-16 19:06:02,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:02,115 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:02,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:02,122 INFO L225 Difference]: With dead ends: 2970 [2020-01-16 19:06:02,122 INFO L226 Difference]: Without dead ends: 2955 [2020-01-16 19:06:02,122 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:02,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2955 states. [2020-01-16 19:06:02,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2955 to 1580. [2020-01-16 19:06:02,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 19:06:02,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7076 transitions. [2020-01-16 19:06:02,209 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7076 transitions. Word has length 28 [2020-01-16 19:06:02,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:02,209 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7076 transitions. [2020-01-16 19:06:02,209 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:02,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7076 transitions. [2020-01-16 19:06:02,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:02,211 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:02,211 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:02,212 INFO L426 AbstractCegarLoop]: === Iteration 492 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:02,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:02,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1377587756, now seen corresponding path program 484 times [2020-01-16 19:06:02,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:02,212 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326447647] [2020-01-16 19:06:02,212 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:02,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:02,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:02,730 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326447647] [2020-01-16 19:06:02,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:02,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:02,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67481115] [2020-01-16 19:06:02,731 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:02,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:02,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:02,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:02,731 INFO L87 Difference]: Start difference. First operand 1580 states and 7076 transitions. Second operand 11 states. [2020-01-16 19:06:02,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:02,917 INFO L93 Difference]: Finished difference Result 2973 states and 11780 transitions. [2020-01-16 19:06:02,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:02,918 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:02,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:02,925 INFO L225 Difference]: With dead ends: 2973 [2020-01-16 19:06:02,925 INFO L226 Difference]: Without dead ends: 2950 [2020-01-16 19:06:02,926 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:02,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2020-01-16 19:06:02,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 1575. [2020-01-16 19:06:02,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:06:02,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7062 transitions. [2020-01-16 19:06:02,993 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7062 transitions. Word has length 28 [2020-01-16 19:06:02,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:02,993 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7062 transitions. [2020-01-16 19:06:02,993 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:02,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7062 transitions. [2020-01-16 19:06:02,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:02,995 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:02,995 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:02,995 INFO L426 AbstractCegarLoop]: === Iteration 493 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:02,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:02,996 INFO L82 PathProgramCache]: Analyzing trace with hash -440200122, now seen corresponding path program 485 times [2020-01-16 19:06:02,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:02,996 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808494411] [2020-01-16 19:06:02,996 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:02,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:03,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:03,573 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808494411] [2020-01-16 19:06:03,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:03,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:03,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233613345] [2020-01-16 19:06:03,575 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:03,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:03,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:03,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:03,575 INFO L87 Difference]: Start difference. First operand 1575 states and 7062 transitions. Second operand 11 states. [2020-01-16 19:06:03,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:03,701 INFO L93 Difference]: Finished difference Result 2985 states and 11804 transitions. [2020-01-16 19:06:03,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:03,702 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:03,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:03,710 INFO L225 Difference]: With dead ends: 2985 [2020-01-16 19:06:03,710 INFO L226 Difference]: Without dead ends: 2965 [2020-01-16 19:06:03,710 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:03,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2965 states. [2020-01-16 19:06:03,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2965 to 1585. [2020-01-16 19:06:03,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 19:06:03,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7079 transitions. [2020-01-16 19:06:03,776 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7079 transitions. Word has length 28 [2020-01-16 19:06:03,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:03,776 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7079 transitions. [2020-01-16 19:06:03,776 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:03,776 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7079 transitions. [2020-01-16 19:06:03,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:03,778 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:03,778 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:03,778 INFO L426 AbstractCegarLoop]: === Iteration 494 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:03,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:03,779 INFO L82 PathProgramCache]: Analyzing trace with hash 304502376, now seen corresponding path program 486 times [2020-01-16 19:06:03,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:03,779 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053705339] [2020-01-16 19:06:03,779 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:03,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:04,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:04,319 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053705339] [2020-01-16 19:06:04,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:04,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:04,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836780437] [2020-01-16 19:06:04,320 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:04,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:04,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:04,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:04,320 INFO L87 Difference]: Start difference. First operand 1585 states and 7079 transitions. Second operand 11 states. [2020-01-16 19:06:04,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:04,526 INFO L93 Difference]: Finished difference Result 2983 states and 11792 transitions. [2020-01-16 19:06:04,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:04,527 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:04,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:04,534 INFO L225 Difference]: With dead ends: 2983 [2020-01-16 19:06:04,534 INFO L226 Difference]: Without dead ends: 2948 [2020-01-16 19:06:04,534 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:04,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2948 states. [2020-01-16 19:06:04,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2948 to 1568. [2020-01-16 19:06:04,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 19:06:04,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7043 transitions. [2020-01-16 19:06:04,600 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7043 transitions. Word has length 28 [2020-01-16 19:06:04,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:04,600 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7043 transitions. [2020-01-16 19:06:04,600 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:04,600 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7043 transitions. [2020-01-16 19:06:04,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:04,602 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:04,603 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:04,603 INFO L426 AbstractCegarLoop]: === Iteration 495 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:04,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:04,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1321160334, now seen corresponding path program 487 times [2020-01-16 19:06:04,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:04,603 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716491536] [2020-01-16 19:06:04,603 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:04,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:05,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:05,139 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716491536] [2020-01-16 19:06:05,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:05,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:05,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358593113] [2020-01-16 19:06:05,139 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:05,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:05,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:05,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:05,140 INFO L87 Difference]: Start difference. First operand 1568 states and 7043 transitions. Second operand 11 states. [2020-01-16 19:06:05,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:05,308 INFO L93 Difference]: Finished difference Result 2961 states and 11754 transitions. [2020-01-16 19:06:05,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:05,308 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:05,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:05,316 INFO L225 Difference]: With dead ends: 2961 [2020-01-16 19:06:05,316 INFO L226 Difference]: Without dead ends: 2946 [2020-01-16 19:06:05,316 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:05,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2946 states. [2020-01-16 19:06:05,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2946 to 1579. [2020-01-16 19:06:05,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 19:06:05,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7072 transitions. [2020-01-16 19:06:05,384 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7072 transitions. Word has length 28 [2020-01-16 19:06:05,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:05,384 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7072 transitions. [2020-01-16 19:06:05,384 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:05,384 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7072 transitions. [2020-01-16 19:06:05,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:05,386 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:05,386 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:05,386 INFO L426 AbstractCegarLoop]: === Iteration 496 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:05,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:05,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1484401966, now seen corresponding path program 488 times [2020-01-16 19:06:05,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:05,387 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359945412] [2020-01-16 19:06:05,387 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:05,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:05,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:05,924 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359945412] [2020-01-16 19:06:05,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:05,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:05,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163636905] [2020-01-16 19:06:05,925 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:05,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:05,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:05,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:05,925 INFO L87 Difference]: Start difference. First operand 1579 states and 7072 transitions. Second operand 11 states. [2020-01-16 19:06:06,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:06,065 INFO L93 Difference]: Finished difference Result 2966 states and 11758 transitions. [2020-01-16 19:06:06,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:06,065 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:06,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:06,072 INFO L225 Difference]: With dead ends: 2966 [2020-01-16 19:06:06,073 INFO L226 Difference]: Without dead ends: 2940 [2020-01-16 19:06:06,073 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:06,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2940 states. [2020-01-16 19:06:06,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2940 to 1573. [2020-01-16 19:06:06,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:06:06,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7056 transitions. [2020-01-16 19:06:06,139 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7056 transitions. Word has length 28 [2020-01-16 19:06:06,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:06,139 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7056 transitions. [2020-01-16 19:06:06,139 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:06,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7056 transitions. [2020-01-16 19:06:06,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:06,141 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:06,141 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:06,141 INFO L426 AbstractCegarLoop]: === Iteration 497 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:06,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:06,142 INFO L82 PathProgramCache]: Analyzing trace with hash -825010426, now seen corresponding path program 489 times [2020-01-16 19:06:06,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:06,142 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642854338] [2020-01-16 19:06:06,142 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:06,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:06,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:06,675 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642854338] [2020-01-16 19:06:06,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:06,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:06,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610788276] [2020-01-16 19:06:06,675 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:06,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:06,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:06,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:06,676 INFO L87 Difference]: Start difference. First operand 1573 states and 7056 transitions. Second operand 11 states. [2020-01-16 19:06:06,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:06,849 INFO L93 Difference]: Finished difference Result 2953 states and 11733 transitions. [2020-01-16 19:06:06,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:06,850 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:06,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:06,858 INFO L225 Difference]: With dead ends: 2953 [2020-01-16 19:06:06,858 INFO L226 Difference]: Without dead ends: 2938 [2020-01-16 19:06:06,858 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:06,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2020-01-16 19:06:06,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 1577. [2020-01-16 19:06:06,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 19:06:06,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7063 transitions. [2020-01-16 19:06:06,924 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7063 transitions. Word has length 28 [2020-01-16 19:06:06,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:06,924 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7063 transitions. [2020-01-16 19:06:06,924 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:06,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7063 transitions. [2020-01-16 19:06:06,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:06,926 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:06,927 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:06,927 INFO L426 AbstractCegarLoop]: === Iteration 498 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:06,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:06,927 INFO L82 PathProgramCache]: Analyzing trace with hash -651762734, now seen corresponding path program 490 times [2020-01-16 19:06:06,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:06,927 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717606750] [2020-01-16 19:06:06,927 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:06,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:07,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:07,469 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717606750] [2020-01-16 19:06:07,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:07,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:07,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868478140] [2020-01-16 19:06:07,469 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:07,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:07,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:07,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:07,469 INFO L87 Difference]: Start difference. First operand 1577 states and 7063 transitions. Second operand 11 states. [2020-01-16 19:06:07,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:07,681 INFO L93 Difference]: Finished difference Result 2952 states and 11727 transitions. [2020-01-16 19:06:07,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:07,682 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:07,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:07,689 INFO L225 Difference]: With dead ends: 2952 [2020-01-16 19:06:07,689 INFO L226 Difference]: Without dead ends: 2934 [2020-01-16 19:06:07,690 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:07,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2934 states. [2020-01-16 19:06:07,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2934 to 1573. [2020-01-16 19:06:07,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:06:07,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7052 transitions. [2020-01-16 19:06:07,776 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7052 transitions. Word has length 28 [2020-01-16 19:06:07,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:07,776 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7052 transitions. [2020-01-16 19:06:07,776 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:07,776 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7052 transitions. [2020-01-16 19:06:07,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:07,778 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:07,778 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:07,778 INFO L426 AbstractCegarLoop]: === Iteration 499 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:07,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:07,779 INFO L82 PathProgramCache]: Analyzing trace with hash -408690810, now seen corresponding path program 491 times [2020-01-16 19:06:07,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:07,779 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559553963] [2020-01-16 19:06:07,779 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:07,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:08,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:08,302 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559553963] [2020-01-16 19:06:08,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:08,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:08,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595901687] [2020-01-16 19:06:08,303 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:08,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:08,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:08,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:08,303 INFO L87 Difference]: Start difference. First operand 1573 states and 7052 transitions. Second operand 11 states. [2020-01-16 19:06:08,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:08,439 INFO L93 Difference]: Finished difference Result 2964 states and 11749 transitions. [2020-01-16 19:06:08,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:08,439 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:08,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:08,447 INFO L225 Difference]: With dead ends: 2964 [2020-01-16 19:06:08,447 INFO L226 Difference]: Without dead ends: 2944 [2020-01-16 19:06:08,447 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:08,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2944 states. [2020-01-16 19:06:08,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2944 to 1578. [2020-01-16 19:06:08,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 19:06:08,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7060 transitions. [2020-01-16 19:06:08,513 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7060 transitions. Word has length 28 [2020-01-16 19:06:08,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:08,514 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7060 transitions. [2020-01-16 19:06:08,514 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:08,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7060 transitions. [2020-01-16 19:06:08,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:08,516 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:08,516 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:08,516 INFO L426 AbstractCegarLoop]: === Iteration 500 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:08,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:08,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1724848114, now seen corresponding path program 492 times [2020-01-16 19:06:08,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:08,516 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657082276] [2020-01-16 19:06:08,517 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:08,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:09,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:09,036 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657082276] [2020-01-16 19:06:09,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:09,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:09,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364566588] [2020-01-16 19:06:09,036 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:09,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:09,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:09,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:09,037 INFO L87 Difference]: Start difference. First operand 1578 states and 7060 transitions. Second operand 11 states. [2020-01-16 19:06:09,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:09,227 INFO L93 Difference]: Finished difference Result 2958 states and 11733 transitions. [2020-01-16 19:06:09,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:09,227 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:09,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:09,235 INFO L225 Difference]: With dead ends: 2958 [2020-01-16 19:06:09,235 INFO L226 Difference]: Without dead ends: 2934 [2020-01-16 19:06:09,235 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:09,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2934 states. [2020-01-16 19:06:09,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2934 to 1568. [2020-01-16 19:06:09,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 19:06:09,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7038 transitions. [2020-01-16 19:06:09,302 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7038 transitions. Word has length 28 [2020-01-16 19:06:09,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:09,302 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7038 transitions. [2020-01-16 19:06:09,302 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:09,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7038 transitions. [2020-01-16 19:06:09,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:09,305 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:09,305 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:09,305 INFO L426 AbstractCegarLoop]: === Iteration 501 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:09,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:09,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1331663438, now seen corresponding path program 493 times [2020-01-16 19:06:09,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:09,305 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798254490] [2020-01-16 19:06:09,305 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:09,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:09,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:09,835 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798254490] [2020-01-16 19:06:09,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:09,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:09,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494076587] [2020-01-16 19:06:09,836 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:09,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:09,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:09,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:09,836 INFO L87 Difference]: Start difference. First operand 1568 states and 7038 transitions. Second operand 11 states. [2020-01-16 19:06:10,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:10,014 INFO L93 Difference]: Finished difference Result 2953 states and 11734 transitions. [2020-01-16 19:06:10,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:10,015 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:10,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:10,022 INFO L225 Difference]: With dead ends: 2953 [2020-01-16 19:06:10,022 INFO L226 Difference]: Without dead ends: 2938 [2020-01-16 19:06:10,022 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:10,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2020-01-16 19:06:10,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 1577. [2020-01-16 19:06:10,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 19:06:10,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7062 transitions. [2020-01-16 19:06:10,090 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7062 transitions. Word has length 28 [2020-01-16 19:06:10,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:10,090 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7062 transitions. [2020-01-16 19:06:10,091 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:10,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7062 transitions. [2020-01-16 19:06:10,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:10,093 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:10,093 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:10,093 INFO L426 AbstractCegarLoop]: === Iteration 502 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:10,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:10,093 INFO L82 PathProgramCache]: Analyzing trace with hash -729196364, now seen corresponding path program 494 times [2020-01-16 19:06:10,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:10,093 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787782407] [2020-01-16 19:06:10,094 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:10,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:10,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:10,608 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787782407] [2020-01-16 19:06:10,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:10,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:10,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943488292] [2020-01-16 19:06:10,609 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:10,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:10,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:10,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:10,609 INFO L87 Difference]: Start difference. First operand 1577 states and 7062 transitions. Second operand 11 states. [2020-01-16 19:06:10,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:10,785 INFO L93 Difference]: Finished difference Result 2956 states and 11735 transitions. [2020-01-16 19:06:10,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:10,786 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:10,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:10,793 INFO L225 Difference]: With dead ends: 2956 [2020-01-16 19:06:10,794 INFO L226 Difference]: Without dead ends: 2933 [2020-01-16 19:06:10,794 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:10,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2933 states. [2020-01-16 19:06:10,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2933 to 1572. [2020-01-16 19:06:10,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 19:06:10,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7049 transitions. [2020-01-16 19:06:10,866 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7049 transitions. Word has length 28 [2020-01-16 19:06:10,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:10,866 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7049 transitions. [2020-01-16 19:06:10,866 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:10,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7049 transitions. [2020-01-16 19:06:10,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:10,869 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:10,869 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:10,869 INFO L426 AbstractCegarLoop]: === Iteration 503 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:10,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:10,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1869519016, now seen corresponding path program 495 times [2020-01-16 19:06:10,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:10,870 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378340032] [2020-01-16 19:06:10,870 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:10,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:11,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:11,401 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378340032] [2020-01-16 19:06:11,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:11,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:11,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417458534] [2020-01-16 19:06:11,402 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:11,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:11,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:11,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:11,402 INFO L87 Difference]: Start difference. First operand 1572 states and 7049 transitions. Second operand 11 states. [2020-01-16 19:06:11,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:11,575 INFO L93 Difference]: Finished difference Result 2948 states and 11719 transitions. [2020-01-16 19:06:11,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:11,575 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:11,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:11,582 INFO L225 Difference]: With dead ends: 2948 [2020-01-16 19:06:11,582 INFO L226 Difference]: Without dead ends: 2933 [2020-01-16 19:06:11,582 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:11,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2933 states. [2020-01-16 19:06:11,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2933 to 1576. [2020-01-16 19:06:11,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 19:06:11,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7056 transitions. [2020-01-16 19:06:11,648 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7056 transitions. Word has length 28 [2020-01-16 19:06:11,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:11,649 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7056 transitions. [2020-01-16 19:06:11,649 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:11,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7056 transitions. [2020-01-16 19:06:11,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:11,651 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:11,651 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:11,651 INFO L426 AbstractCegarLoop]: === Iteration 504 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:11,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:11,651 INFO L82 PathProgramCache]: Analyzing trace with hash 2042766708, now seen corresponding path program 496 times [2020-01-16 19:06:11,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:11,651 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485928690] [2020-01-16 19:06:11,652 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:11,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:12,183 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 19:06:12,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:12,190 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485928690] [2020-01-16 19:06:12,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:12,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:12,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072400360] [2020-01-16 19:06:12,190 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:12,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:12,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:12,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:12,190 INFO L87 Difference]: Start difference. First operand 1576 states and 7056 transitions. Second operand 11 states. [2020-01-16 19:06:12,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:12,370 INFO L93 Difference]: Finished difference Result 2947 states and 11713 transitions. [2020-01-16 19:06:12,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:12,371 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:12,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:12,378 INFO L225 Difference]: With dead ends: 2947 [2020-01-16 19:06:12,378 INFO L226 Difference]: Without dead ends: 2929 [2020-01-16 19:06:12,378 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:12,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2929 states. [2020-01-16 19:06:12,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2929 to 1572. [2020-01-16 19:06:12,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 19:06:12,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7045 transitions. [2020-01-16 19:06:12,444 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7045 transitions. Word has length 28 [2020-01-16 19:06:12,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:12,444 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7045 transitions. [2020-01-16 19:06:12,444 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:12,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7045 transitions. [2020-01-16 19:06:12,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:12,446 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:12,446 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:12,447 INFO L426 AbstractCegarLoop]: === Iteration 505 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:12,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:12,447 INFO L82 PathProgramCache]: Analyzing trace with hash 346514792, now seen corresponding path program 497 times [2020-01-16 19:06:12,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:12,447 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906693463] [2020-01-16 19:06:12,447 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:12,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:12,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:12,965 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906693463] [2020-01-16 19:06:12,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:12,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:12,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121609226] [2020-01-16 19:06:12,966 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:12,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:12,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:12,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:12,966 INFO L87 Difference]: Start difference. First operand 1572 states and 7045 transitions. Second operand 11 states. [2020-01-16 19:06:13,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:13,162 INFO L93 Difference]: Finished difference Result 2954 states and 11727 transitions. [2020-01-16 19:06:13,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:13,163 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:13,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:13,170 INFO L225 Difference]: With dead ends: 2954 [2020-01-16 19:06:13,171 INFO L226 Difference]: Without dead ends: 2936 [2020-01-16 19:06:13,171 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:13,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2936 states. [2020-01-16 19:06:13,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2936 to 1576. [2020-01-16 19:06:13,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 19:06:13,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7052 transitions. [2020-01-16 19:06:13,268 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7052 transitions. Word has length 28 [2020-01-16 19:06:13,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:13,268 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7052 transitions. [2020-01-16 19:06:13,269 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:13,269 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7052 transitions. [2020-01-16 19:06:13,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:13,272 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:13,272 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:13,272 INFO L426 AbstractCegarLoop]: === Iteration 506 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:13,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:13,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1714345010, now seen corresponding path program 498 times [2020-01-16 19:06:13,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:13,272 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193489505] [2020-01-16 19:06:13,272 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:13,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:13,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:13,792 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193489505] [2020-01-16 19:06:13,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:13,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:13,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669684009] [2020-01-16 19:06:13,792 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:13,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:13,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:13,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:13,793 INFO L87 Difference]: Start difference. First operand 1576 states and 7052 transitions. Second operand 11 states. [2020-01-16 19:06:13,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:13,969 INFO L93 Difference]: Finished difference Result 2950 states and 11715 transitions. [2020-01-16 19:06:13,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:13,969 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:13,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:13,976 INFO L225 Difference]: With dead ends: 2950 [2020-01-16 19:06:13,976 INFO L226 Difference]: Without dead ends: 2928 [2020-01-16 19:06:13,976 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:14,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2020-01-16 19:06:14,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 1568. [2020-01-16 19:06:14,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 19:06:14,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7034 transitions. [2020-01-16 19:06:14,042 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7034 transitions. Word has length 28 [2020-01-16 19:06:14,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:14,042 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7034 transitions. [2020-01-16 19:06:14,042 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:14,042 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7034 transitions. [2020-01-16 19:06:14,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:14,044 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:14,044 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:14,045 INFO L426 AbstractCegarLoop]: === Iteration 507 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:14,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:14,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1452892654, now seen corresponding path program 499 times [2020-01-16 19:06:14,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:14,045 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721963928] [2020-01-16 19:06:14,045 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:14,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:14,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:14,585 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721963928] [2020-01-16 19:06:14,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:14,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:14,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321039623] [2020-01-16 19:06:14,586 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:14,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:14,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:14,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:14,586 INFO L87 Difference]: Start difference. First operand 1568 states and 7034 transitions. Second operand 11 states. [2020-01-16 19:06:14,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:14,729 INFO L93 Difference]: Finished difference Result 2981 states and 11788 transitions. [2020-01-16 19:06:14,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:14,729 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:14,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:14,736 INFO L225 Difference]: With dead ends: 2981 [2020-01-16 19:06:14,736 INFO L226 Difference]: Without dead ends: 2961 [2020-01-16 19:06:14,736 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:14,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2020-01-16 19:06:14,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 1584. [2020-01-16 19:06:14,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1584 states. [2020-01-16 19:06:14,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 7071 transitions. [2020-01-16 19:06:14,805 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 7071 transitions. Word has length 28 [2020-01-16 19:06:14,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:14,805 INFO L478 AbstractCegarLoop]: Abstraction has 1584 states and 7071 transitions. [2020-01-16 19:06:14,805 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:14,805 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 7071 transitions. [2020-01-16 19:06:14,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:14,807 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:14,807 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:14,808 INFO L426 AbstractCegarLoop]: === Iteration 508 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:14,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:14,808 INFO L82 PathProgramCache]: Analyzing trace with hash -708190156, now seen corresponding path program 500 times [2020-01-16 19:06:14,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:14,808 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365879311] [2020-01-16 19:06:14,808 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:14,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:15,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:15,349 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365879311] [2020-01-16 19:06:15,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:15,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:15,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060272172] [2020-01-16 19:06:15,349 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:15,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:15,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:15,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:15,350 INFO L87 Difference]: Start difference. First operand 1584 states and 7071 transitions. Second operand 11 states. [2020-01-16 19:06:15,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:15,522 INFO L93 Difference]: Finished difference Result 2979 states and 11776 transitions. [2020-01-16 19:06:15,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:15,522 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:15,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:15,529 INFO L225 Difference]: With dead ends: 2979 [2020-01-16 19:06:15,529 INFO L226 Difference]: Without dead ends: 2951 [2020-01-16 19:06:15,529 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:15,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2020-01-16 19:06:15,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 1574. [2020-01-16 19:06:15,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 19:06:15,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7048 transitions. [2020-01-16 19:06:15,595 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7048 transitions. Word has length 28 [2020-01-16 19:06:15,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:15,595 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7048 transitions. [2020-01-16 19:06:15,595 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:15,595 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7048 transitions. [2020-01-16 19:06:15,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:15,597 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:15,598 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:15,598 INFO L426 AbstractCegarLoop]: === Iteration 509 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:15,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:15,598 INFO L82 PathProgramCache]: Analyzing trace with hash -915037076, now seen corresponding path program 501 times [2020-01-16 19:06:15,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:15,598 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618206130] [2020-01-16 19:06:15,598 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:15,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:16,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:16,117 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618206130] [2020-01-16 19:06:16,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:16,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:16,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743357381] [2020-01-16 19:06:16,117 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:16,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:16,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:16,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:16,118 INFO L87 Difference]: Start difference. First operand 1574 states and 7048 transitions. Second operand 11 states. [2020-01-16 19:06:16,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:16,256 INFO L93 Difference]: Finished difference Result 2972 states and 11761 transitions. [2020-01-16 19:06:16,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:16,256 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:16,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:16,264 INFO L225 Difference]: With dead ends: 2972 [2020-01-16 19:06:16,264 INFO L226 Difference]: Without dead ends: 2952 [2020-01-16 19:06:16,265 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:16,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2020-01-16 19:06:16,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 1579. [2020-01-16 19:06:16,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 19:06:16,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7056 transitions. [2020-01-16 19:06:16,331 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7056 transitions. Word has length 28 [2020-01-16 19:06:16,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:16,331 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7056 transitions. [2020-01-16 19:06:16,331 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:16,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7056 transitions. [2020-01-16 19:06:16,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:16,333 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:16,333 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:16,334 INFO L426 AbstractCegarLoop]: === Iteration 510 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:16,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:16,334 INFO L82 PathProgramCache]: Analyzing trace with hash 2063772916, now seen corresponding path program 502 times [2020-01-16 19:06:16,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:16,334 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831847945] [2020-01-16 19:06:16,334 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:16,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:16,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:16,850 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831847945] [2020-01-16 19:06:16,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:16,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:16,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301751802] [2020-01-16 19:06:16,850 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:16,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:16,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:16,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:16,851 INFO L87 Difference]: Start difference. First operand 1579 states and 7056 transitions. Second operand 11 states. [2020-01-16 19:06:17,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:17,021 INFO L93 Difference]: Finished difference Result 2966 states and 11745 transitions. [2020-01-16 19:06:17,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:17,021 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:17,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:17,028 INFO L225 Difference]: With dead ends: 2966 [2020-01-16 19:06:17,028 INFO L226 Difference]: Without dead ends: 2947 [2020-01-16 19:06:17,029 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:17,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2947 states. [2020-01-16 19:06:17,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2947 to 1574. [2020-01-16 19:06:17,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 19:06:17,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7043 transitions. [2020-01-16 19:06:17,095 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7043 transitions. Word has length 28 [2020-01-16 19:06:17,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:17,095 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7043 transitions. [2020-01-16 19:06:17,095 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:17,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7043 transitions. [2020-01-16 19:06:17,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:17,097 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:17,097 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:17,097 INFO L426 AbstractCegarLoop]: === Iteration 511 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:17,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:17,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1440606380, now seen corresponding path program 503 times [2020-01-16 19:06:17,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:17,098 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62973151] [2020-01-16 19:06:17,098 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:17,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:17,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:17,622 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62973151] [2020-01-16 19:06:17,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:17,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:17,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587809294] [2020-01-16 19:06:17,622 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:17,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:17,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:17,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:17,623 INFO L87 Difference]: Start difference. First operand 1574 states and 7043 transitions. Second operand 11 states. [2020-01-16 19:06:17,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:17,800 INFO L93 Difference]: Finished difference Result 2967 states and 11748 transitions. [2020-01-16 19:06:17,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:17,801 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:17,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:17,807 INFO L225 Difference]: With dead ends: 2967 [2020-01-16 19:06:17,808 INFO L226 Difference]: Without dead ends: 2949 [2020-01-16 19:06:17,808 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:17,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2949 states. [2020-01-16 19:06:17,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2949 to 1578. [2020-01-16 19:06:17,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 19:06:17,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7050 transitions. [2020-01-16 19:06:17,874 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7050 transitions. Word has length 28 [2020-01-16 19:06:17,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:17,874 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7050 transitions. [2020-01-16 19:06:17,874 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:17,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7050 transitions. [2020-01-16 19:06:17,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:17,876 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:17,876 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:17,877 INFO L426 AbstractCegarLoop]: === Iteration 512 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:17,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:17,877 INFO L82 PathProgramCache]: Analyzing trace with hash -620253422, now seen corresponding path program 504 times [2020-01-16 19:06:17,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:17,877 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818393685] [2020-01-16 19:06:17,878 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:17,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:18,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:18,396 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818393685] [2020-01-16 19:06:18,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:18,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:18,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746696350] [2020-01-16 19:06:18,397 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:18,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:18,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:18,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:18,398 INFO L87 Difference]: Start difference. First operand 1578 states and 7050 transitions. Second operand 11 states. [2020-01-16 19:06:18,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:18,580 INFO L93 Difference]: Finished difference Result 2963 states and 11736 transitions. [2020-01-16 19:06:18,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:18,580 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:18,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:18,588 INFO L225 Difference]: With dead ends: 2963 [2020-01-16 19:06:18,588 INFO L226 Difference]: Without dead ends: 2933 [2020-01-16 19:06:18,588 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:18,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2933 states. [2020-01-16 19:06:18,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2933 to 1562. [2020-01-16 19:06:18,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1562 states. [2020-01-16 19:06:18,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1562 states to 1562 states and 7017 transitions. [2020-01-16 19:06:18,656 INFO L78 Accepts]: Start accepts. Automaton has 1562 states and 7017 transitions. Word has length 28 [2020-01-16 19:06:18,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:18,656 INFO L478 AbstractCegarLoop]: Abstraction has 1562 states and 7017 transitions. [2020-01-16 19:06:18,656 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:18,657 INFO L276 IsEmpty]: Start isEmpty. Operand 1562 states and 7017 transitions. [2020-01-16 19:06:18,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:18,659 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:18,659 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:18,659 INFO L426 AbstractCegarLoop]: === Iteration 513 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:18,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:18,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1384607460, now seen corresponding path program 505 times [2020-01-16 19:06:18,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:18,660 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781780854] [2020-01-16 19:06:18,660 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:18,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:19,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:19,212 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781780854] [2020-01-16 19:06:19,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:19,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:19,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159372597] [2020-01-16 19:06:19,213 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:19,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:19,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:19,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:19,213 INFO L87 Difference]: Start difference. First operand 1562 states and 7017 transitions. Second operand 11 states. [2020-01-16 19:06:19,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:19,414 INFO L93 Difference]: Finished difference Result 2991 states and 11839 transitions. [2020-01-16 19:06:19,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:19,414 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:19,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:19,421 INFO L225 Difference]: With dead ends: 2991 [2020-01-16 19:06:19,421 INFO L226 Difference]: Without dead ends: 2976 [2020-01-16 19:06:19,422 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:19,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2976 states. [2020-01-16 19:06:19,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2976 to 1583. [2020-01-16 19:06:19,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 19:06:19,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7085 transitions. [2020-01-16 19:06:19,489 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7085 transitions. Word has length 28 [2020-01-16 19:06:19,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:19,489 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7085 transitions. [2020-01-16 19:06:19,489 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:19,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7085 transitions. [2020-01-16 19:06:19,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:19,492 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:19,492 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:19,492 INFO L426 AbstractCegarLoop]: === Iteration 514 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:19,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:19,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1420954840, now seen corresponding path program 506 times [2020-01-16 19:06:19,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:19,492 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118492368] [2020-01-16 19:06:19,492 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:19,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:20,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:20,024 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118492368] [2020-01-16 19:06:20,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:20,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:20,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641834754] [2020-01-16 19:06:20,025 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:20,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:20,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:20,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:20,025 INFO L87 Difference]: Start difference. First operand 1583 states and 7085 transitions. Second operand 11 states. [2020-01-16 19:06:20,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:20,165 INFO L93 Difference]: Finished difference Result 2996 states and 11843 transitions. [2020-01-16 19:06:20,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:20,165 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:20,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:20,172 INFO L225 Difference]: With dead ends: 2996 [2020-01-16 19:06:20,173 INFO L226 Difference]: Without dead ends: 2970 [2020-01-16 19:06:20,173 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:20,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2970 states. [2020-01-16 19:06:20,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2970 to 1577. [2020-01-16 19:06:20,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 19:06:20,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7068 transitions. [2020-01-16 19:06:20,239 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7068 transitions. Word has length 28 [2020-01-16 19:06:20,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:20,239 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7068 transitions. [2020-01-16 19:06:20,239 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:20,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7068 transitions. [2020-01-16 19:06:20,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:20,241 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:20,241 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:20,242 INFO L426 AbstractCegarLoop]: === Iteration 515 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:20,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:20,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1299418878, now seen corresponding path program 507 times [2020-01-16 19:06:20,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:20,242 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187685734] [2020-01-16 19:06:20,242 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:20,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:20,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:20,771 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187685734] [2020-01-16 19:06:20,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:20,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:20,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481631178] [2020-01-16 19:06:20,772 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:20,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:20,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:20,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:20,772 INFO L87 Difference]: Start difference. First operand 1577 states and 7068 transitions. Second operand 11 states. [2020-01-16 19:06:20,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:20,975 INFO L93 Difference]: Finished difference Result 2988 states and 11828 transitions. [2020-01-16 19:06:20,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:20,976 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:20,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:20,983 INFO L225 Difference]: With dead ends: 2988 [2020-01-16 19:06:20,983 INFO L226 Difference]: Without dead ends: 2973 [2020-01-16 19:06:20,983 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:21,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2973 states. [2020-01-16 19:06:21,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2973 to 1582. [2020-01-16 19:06:21,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 19:06:21,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7077 transitions. [2020-01-16 19:06:21,050 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7077 transitions. Word has length 28 [2020-01-16 19:06:21,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:21,050 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7077 transitions. [2020-01-16 19:06:21,050 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:21,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7077 transitions. [2020-01-16 19:06:21,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:21,052 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:21,052 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:21,052 INFO L426 AbstractCegarLoop]: === Iteration 516 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:21,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:21,052 INFO L82 PathProgramCache]: Analyzing trace with hash 934688616, now seen corresponding path program 508 times [2020-01-16 19:06:21,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:21,053 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817561597] [2020-01-16 19:06:21,053 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:21,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:21,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:21,579 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817561597] [2020-01-16 19:06:21,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:21,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:21,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375439133] [2020-01-16 19:06:21,579 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:21,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:21,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:21,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:21,580 INFO L87 Difference]: Start difference. First operand 1582 states and 7077 transitions. Second operand 11 states. [2020-01-16 19:06:21,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:21,796 INFO L93 Difference]: Finished difference Result 2991 states and 11829 transitions. [2020-01-16 19:06:21,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:21,797 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:21,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:21,805 INFO L225 Difference]: With dead ends: 2991 [2020-01-16 19:06:21,805 INFO L226 Difference]: Without dead ends: 2968 [2020-01-16 19:06:21,805 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:21,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2968 states. [2020-01-16 19:06:21,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2968 to 1577. [2020-01-16 19:06:21,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 19:06:21,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7063 transitions. [2020-01-16 19:06:21,875 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7063 transitions. Word has length 28 [2020-01-16 19:06:21,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:21,875 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7063 transitions. [2020-01-16 19:06:21,875 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:21,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7063 transitions. [2020-01-16 19:06:21,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:21,878 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:21,878 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:21,878 INFO L426 AbstractCegarLoop]: === Iteration 517 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:21,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:21,879 INFO L82 PathProgramCache]: Analyzing trace with hash -883099262, now seen corresponding path program 509 times [2020-01-16 19:06:21,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:21,879 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119370755] [2020-01-16 19:06:21,879 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:21,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:22,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:22,421 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119370755] [2020-01-16 19:06:22,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:22,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:22,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555323814] [2020-01-16 19:06:22,421 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:22,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:22,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:22,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:22,422 INFO L87 Difference]: Start difference. First operand 1577 states and 7063 transitions. Second operand 11 states. [2020-01-16 19:06:22,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:22,647 INFO L93 Difference]: Finished difference Result 3003 states and 11853 transitions. [2020-01-16 19:06:22,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:22,648 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:22,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:22,655 INFO L225 Difference]: With dead ends: 3003 [2020-01-16 19:06:22,655 INFO L226 Difference]: Without dead ends: 2983 [2020-01-16 19:06:22,656 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:22,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2983 states. [2020-01-16 19:06:22,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2983 to 1587. [2020-01-16 19:06:22,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1587 states. [2020-01-16 19:06:22,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 7080 transitions. [2020-01-16 19:06:22,722 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 7080 transitions. Word has length 28 [2020-01-16 19:06:22,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:22,722 INFO L478 AbstractCegarLoop]: Abstraction has 1587 states and 7080 transitions. [2020-01-16 19:06:22,722 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:22,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 7080 transitions. [2020-01-16 19:06:22,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:22,724 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:22,725 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:22,725 INFO L426 AbstractCegarLoop]: === Iteration 518 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:22,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:22,725 INFO L82 PathProgramCache]: Analyzing trace with hash -138396764, now seen corresponding path program 510 times [2020-01-16 19:06:22,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:22,725 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908277048] [2020-01-16 19:06:22,725 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:22,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:23,264 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 19:06:23,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:23,271 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908277048] [2020-01-16 19:06:23,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:23,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:23,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162491492] [2020-01-16 19:06:23,271 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:23,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:23,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:23,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:23,271 INFO L87 Difference]: Start difference. First operand 1587 states and 7080 transitions. Second operand 11 states. [2020-01-16 19:06:23,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:23,515 INFO L93 Difference]: Finished difference Result 3001 states and 11841 transitions. [2020-01-16 19:06:23,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:23,515 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:23,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:23,522 INFO L225 Difference]: With dead ends: 3001 [2020-01-16 19:06:23,523 INFO L226 Difference]: Without dead ends: 2966 [2020-01-16 19:06:23,523 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:23,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2966 states. [2020-01-16 19:06:23,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2966 to 1570. [2020-01-16 19:06:23,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 19:06:23,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7043 transitions. [2020-01-16 19:06:23,590 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7043 transitions. Word has length 28 [2020-01-16 19:06:23,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:23,590 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7043 transitions. [2020-01-16 19:06:23,590 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:23,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7043 transitions. [2020-01-16 19:06:23,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:23,592 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:23,592 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:23,592 INFO L426 AbstractCegarLoop]: === Iteration 519 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:23,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:23,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1972352782, now seen corresponding path program 511 times [2020-01-16 19:06:23,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:23,593 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469928428] [2020-01-16 19:06:23,593 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:23,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:24,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:24,112 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469928428] [2020-01-16 19:06:24,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:24,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:24,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880491006] [2020-01-16 19:06:24,112 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:24,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:24,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:24,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:24,113 INFO L87 Difference]: Start difference. First operand 1570 states and 7043 transitions. Second operand 11 states. [2020-01-16 19:06:24,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:24,306 INFO L93 Difference]: Finished difference Result 2987 states and 11824 transitions. [2020-01-16 19:06:24,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:24,307 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:24,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:24,314 INFO L225 Difference]: With dead ends: 2987 [2020-01-16 19:06:24,315 INFO L226 Difference]: Without dead ends: 2972 [2020-01-16 19:06:24,315 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:24,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2972 states. [2020-01-16 19:06:24,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2972 to 1582. [2020-01-16 19:06:24,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 19:06:24,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7076 transitions. [2020-01-16 19:06:24,381 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7076 transitions. Word has length 28 [2020-01-16 19:06:24,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:24,381 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7076 transitions. [2020-01-16 19:06:24,381 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:24,381 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7076 transitions. [2020-01-16 19:06:24,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:24,383 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:24,383 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:24,383 INFO L426 AbstractCegarLoop]: === Iteration 520 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:24,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:24,384 INFO L82 PathProgramCache]: Analyzing trace with hash -833209518, now seen corresponding path program 512 times [2020-01-16 19:06:24,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:24,384 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928512160] [2020-01-16 19:06:24,384 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:24,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:24,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:24,945 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928512160] [2020-01-16 19:06:24,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:24,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:24,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346507951] [2020-01-16 19:06:24,946 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:24,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:24,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:24,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:24,946 INFO L87 Difference]: Start difference. First operand 1582 states and 7076 transitions. Second operand 11 states. [2020-01-16 19:06:25,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:25,114 INFO L93 Difference]: Finished difference Result 2992 states and 11828 transitions. [2020-01-16 19:06:25,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:25,115 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:25,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:25,122 INFO L225 Difference]: With dead ends: 2992 [2020-01-16 19:06:25,122 INFO L226 Difference]: Without dead ends: 2966 [2020-01-16 19:06:25,122 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:25,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2966 states. [2020-01-16 19:06:25,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2966 to 1576. [2020-01-16 19:06:25,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 19:06:25,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7059 transitions. [2020-01-16 19:06:25,189 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7059 transitions. Word has length 28 [2020-01-16 19:06:25,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:25,189 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7059 transitions. [2020-01-16 19:06:25,189 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:25,189 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7059 transitions. [2020-01-16 19:06:25,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:25,192 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:25,192 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:25,192 INFO L426 AbstractCegarLoop]: === Iteration 521 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:25,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:25,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1246903358, now seen corresponding path program 513 times [2020-01-16 19:06:25,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:25,192 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073806746] [2020-01-16 19:06:25,192 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:25,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:25,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:25,697 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073806746] [2020-01-16 19:06:25,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:25,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:25,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930541259] [2020-01-16 19:06:25,697 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:25,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:25,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:25,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:25,697 INFO L87 Difference]: Start difference. First operand 1576 states and 7059 transitions. Second operand 11 states. [2020-01-16 19:06:25,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:25,878 INFO L93 Difference]: Finished difference Result 2983 states and 11811 transitions. [2020-01-16 19:06:25,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:25,878 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:25,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:25,886 INFO L225 Difference]: With dead ends: 2983 [2020-01-16 19:06:25,886 INFO L226 Difference]: Without dead ends: 2968 [2020-01-16 19:06:25,886 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:25,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2968 states. [2020-01-16 19:06:25,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2968 to 1581. [2020-01-16 19:06:25,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 19:06:25,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7068 transitions. [2020-01-16 19:06:25,952 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7068 transitions. Word has length 28 [2020-01-16 19:06:25,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:25,952 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7068 transitions. [2020-01-16 19:06:25,952 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:25,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7068 transitions. [2020-01-16 19:06:25,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:25,954 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:25,954 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:25,955 INFO L426 AbstractCegarLoop]: === Iteration 522 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:25,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:25,955 INFO L82 PathProgramCache]: Analyzing trace with hash 415749330, now seen corresponding path program 514 times [2020-01-16 19:06:25,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:25,955 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832363838] [2020-01-16 19:06:25,955 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:25,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:26,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:26,476 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832363838] [2020-01-16 19:06:26,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:26,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:26,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74204911] [2020-01-16 19:06:26,477 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:26,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:26,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:26,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:26,477 INFO L87 Difference]: Start difference. First operand 1581 states and 7068 transitions. Second operand 11 states. [2020-01-16 19:06:26,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:26,669 INFO L93 Difference]: Finished difference Result 2985 states and 11810 transitions. [2020-01-16 19:06:26,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:26,669 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:26,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:26,676 INFO L225 Difference]: With dead ends: 2985 [2020-01-16 19:06:26,676 INFO L226 Difference]: Without dead ends: 2963 [2020-01-16 19:06:26,676 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:26,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2963 states. [2020-01-16 19:06:26,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2963 to 1576. [2020-01-16 19:06:26,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 19:06:26,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7054 transitions. [2020-01-16 19:06:26,743 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7054 transitions. Word has length 28 [2020-01-16 19:06:26,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:26,743 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7054 transitions. [2020-01-16 19:06:26,743 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:26,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7054 transitions. [2020-01-16 19:06:26,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:26,746 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:26,746 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:26,746 INFO L426 AbstractCegarLoop]: === Iteration 523 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:26,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:26,746 INFO L82 PathProgramCache]: Analyzing trace with hash -830583742, now seen corresponding path program 515 times [2020-01-16 19:06:26,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:26,746 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875844367] [2020-01-16 19:06:26,746 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:26,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:27,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:27,288 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875844367] [2020-01-16 19:06:27,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:27,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:27,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317375119] [2020-01-16 19:06:27,289 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:27,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:27,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:27,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:27,289 INFO L87 Difference]: Start difference. First operand 1576 states and 7054 transitions. Second operand 11 states. [2020-01-16 19:06:27,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:27,471 INFO L93 Difference]: Finished difference Result 2996 states and 11832 transitions. [2020-01-16 19:06:27,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:27,471 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:27,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:27,479 INFO L225 Difference]: With dead ends: 2996 [2020-01-16 19:06:27,479 INFO L226 Difference]: Without dead ends: 2976 [2020-01-16 19:06:27,479 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:27,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2976 states. [2020-01-16 19:06:27,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2976 to 1584. [2020-01-16 19:06:27,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1584 states. [2020-01-16 19:06:27,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 7068 transitions. [2020-01-16 19:06:27,545 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 7068 transitions. Word has length 28 [2020-01-16 19:06:27,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:27,545 INFO L478 AbstractCegarLoop]: Abstraction has 1584 states and 7068 transitions. [2020-01-16 19:06:27,545 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:27,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 7068 transitions. [2020-01-16 19:06:27,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:27,547 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:27,547 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:27,547 INFO L426 AbstractCegarLoop]: === Iteration 524 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:27,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:27,548 INFO L82 PathProgramCache]: Analyzing trace with hash -657336050, now seen corresponding path program 516 times [2020-01-16 19:06:27,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:27,548 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009247727] [2020-01-16 19:06:27,548 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:27,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:28,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:28,079 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009247727] [2020-01-16 19:06:28,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:28,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:28,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167737553] [2020-01-16 19:06:28,080 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:28,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:28,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:28,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:28,080 INFO L87 Difference]: Start difference. First operand 1584 states and 7068 transitions. Second operand 11 states. [2020-01-16 19:06:28,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:28,319 INFO L93 Difference]: Finished difference Result 2993 states and 11819 transitions. [2020-01-16 19:06:28,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:28,319 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:28,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:28,326 INFO L225 Difference]: With dead ends: 2993 [2020-01-16 19:06:28,326 INFO L226 Difference]: Without dead ends: 2962 [2020-01-16 19:06:28,327 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:28,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2962 states. [2020-01-16 19:06:28,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2962 to 1570. [2020-01-16 19:06:28,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 19:06:28,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7037 transitions. [2020-01-16 19:06:28,392 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7037 transitions. Word has length 28 [2020-01-16 19:06:28,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:28,392 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7037 transitions. [2020-01-16 19:06:28,392 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:28,392 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7037 transitions. [2020-01-16 19:06:28,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:28,395 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:28,395 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:28,395 INFO L426 AbstractCegarLoop]: === Iteration 525 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:28,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:28,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1982855886, now seen corresponding path program 517 times [2020-01-16 19:06:28,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:28,395 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733790374] [2020-01-16 19:06:28,395 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:28,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:28,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:28,909 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733790374] [2020-01-16 19:06:28,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:28,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:28,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439497487] [2020-01-16 19:06:28,909 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:28,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:28,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:28,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:28,909 INFO L87 Difference]: Start difference. First operand 1570 states and 7037 transitions. Second operand 11 states. [2020-01-16 19:06:29,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:29,175 INFO L93 Difference]: Finished difference Result 2979 states and 11803 transitions. [2020-01-16 19:06:29,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:29,176 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:29,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:29,183 INFO L225 Difference]: With dead ends: 2979 [2020-01-16 19:06:29,183 INFO L226 Difference]: Without dead ends: 2964 [2020-01-16 19:06:29,183 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:29,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2964 states. [2020-01-16 19:06:29,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2964 to 1580. [2020-01-16 19:06:29,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 19:06:29,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7065 transitions. [2020-01-16 19:06:29,249 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7065 transitions. Word has length 28 [2020-01-16 19:06:29,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:29,249 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7065 transitions. [2020-01-16 19:06:29,249 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:29,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7065 transitions. [2020-01-16 19:06:29,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:29,251 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:29,251 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:29,251 INFO L426 AbstractCegarLoop]: === Iteration 526 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:29,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:29,252 INFO L82 PathProgramCache]: Analyzing trace with hash -78003916, now seen corresponding path program 518 times [2020-01-16 19:06:29,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:29,252 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120196915] [2020-01-16 19:06:29,252 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:29,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:29,777 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 19:06:29,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:29,784 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120196915] [2020-01-16 19:06:29,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:29,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:29,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858261663] [2020-01-16 19:06:29,784 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:29,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:29,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:29,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:29,785 INFO L87 Difference]: Start difference. First operand 1580 states and 7065 transitions. Second operand 11 states. [2020-01-16 19:06:29,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:29,958 INFO L93 Difference]: Finished difference Result 2982 states and 11804 transitions. [2020-01-16 19:06:29,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:29,959 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:29,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:29,966 INFO L225 Difference]: With dead ends: 2982 [2020-01-16 19:06:29,966 INFO L226 Difference]: Without dead ends: 2959 [2020-01-16 19:06:29,966 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:30,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2959 states. [2020-01-16 19:06:30,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2959 to 1575. [2020-01-16 19:06:30,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:06:30,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7051 transitions. [2020-01-16 19:06:30,032 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7051 transitions. Word has length 28 [2020-01-16 19:06:30,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:30,032 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7051 transitions. [2020-01-16 19:06:30,032 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:30,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7051 transitions. [2020-01-16 19:06:30,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:30,034 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:30,035 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:30,035 INFO L426 AbstractCegarLoop]: === Iteration 527 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:30,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:30,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1447626084, now seen corresponding path program 519 times [2020-01-16 19:06:30,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:30,035 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971480285] [2020-01-16 19:06:30,035 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:30,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:30,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:30,583 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971480285] [2020-01-16 19:06:30,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:30,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:30,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107396831] [2020-01-16 19:06:30,583 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:30,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:30,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:30,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:30,583 INFO L87 Difference]: Start difference. First operand 1575 states and 7051 transitions. Second operand 11 states. [2020-01-16 19:06:30,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:30,760 INFO L93 Difference]: Finished difference Result 2978 states and 11796 transitions. [2020-01-16 19:06:30,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:30,761 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:30,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:30,768 INFO L225 Difference]: With dead ends: 2978 [2020-01-16 19:06:30,768 INFO L226 Difference]: Without dead ends: 2963 [2020-01-16 19:06:30,769 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:30,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2963 states. [2020-01-16 19:06:30,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2963 to 1580. [2020-01-16 19:06:30,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 19:06:30,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7060 transitions. [2020-01-16 19:06:30,835 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7060 transitions. Word has length 28 [2020-01-16 19:06:30,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:30,835 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7060 transitions. [2020-01-16 19:06:30,835 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:30,835 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7060 transitions. [2020-01-16 19:06:30,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:30,838 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:30,838 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:30,838 INFO L426 AbstractCegarLoop]: === Iteration 528 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:30,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:30,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1184688524, now seen corresponding path program 520 times [2020-01-16 19:06:30,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:30,838 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140185950] [2020-01-16 19:06:30,838 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:30,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:31,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:31,357 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140185950] [2020-01-16 19:06:31,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:31,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:31,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240160994] [2020-01-16 19:06:31,357 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:31,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:31,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:31,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:31,358 INFO L87 Difference]: Start difference. First operand 1580 states and 7060 transitions. Second operand 11 states. [2020-01-16 19:06:31,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:31,538 INFO L93 Difference]: Finished difference Result 2980 states and 11795 transitions. [2020-01-16 19:06:31,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:31,538 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:31,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:31,545 INFO L225 Difference]: With dead ends: 2980 [2020-01-16 19:06:31,545 INFO L226 Difference]: Without dead ends: 2958 [2020-01-16 19:06:31,545 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:31,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2958 states. [2020-01-16 19:06:31,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2958 to 1575. [2020-01-16 19:06:31,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:06:31,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7046 transitions. [2020-01-16 19:06:31,612 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7046 transitions. Word has length 28 [2020-01-16 19:06:31,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:31,612 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7046 transitions. [2020-01-16 19:06:31,612 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:31,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7046 transitions. [2020-01-16 19:06:31,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:31,614 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:31,614 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:31,614 INFO L426 AbstractCegarLoop]: === Iteration 529 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:31,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:31,614 INFO L82 PathProgramCache]: Analyzing trace with hash -75378140, now seen corresponding path program 521 times [2020-01-16 19:06:31,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:31,615 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712509558] [2020-01-16 19:06:31,615 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:31,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:32,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:32,141 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712509558] [2020-01-16 19:06:32,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:32,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:32,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430960385] [2020-01-16 19:06:32,142 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:32,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:32,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:32,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:32,142 INFO L87 Difference]: Start difference. First operand 1575 states and 7046 transitions. Second operand 11 states. [2020-01-16 19:06:32,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:32,326 INFO L93 Difference]: Finished difference Result 2986 states and 11809 transitions. [2020-01-16 19:06:32,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:32,326 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:32,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:32,333 INFO L225 Difference]: With dead ends: 2986 [2020-01-16 19:06:32,334 INFO L226 Difference]: Without dead ends: 2968 [2020-01-16 19:06:32,334 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:32,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2968 states. [2020-01-16 19:06:32,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2968 to 1582. [2020-01-16 19:06:32,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 19:06:32,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7059 transitions. [2020-01-16 19:06:32,399 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7059 transitions. Word has length 28 [2020-01-16 19:06:32,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:32,400 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7059 transitions. [2020-01-16 19:06:32,400 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:32,400 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7059 transitions. [2020-01-16 19:06:32,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:32,402 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:32,402 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:32,402 INFO L426 AbstractCegarLoop]: === Iteration 530 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:32,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:32,402 INFO L82 PathProgramCache]: Analyzing trace with hash -646832946, now seen corresponding path program 522 times [2020-01-16 19:06:32,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:32,403 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896230960] [2020-01-16 19:06:32,403 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:32,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:32,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:32,934 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896230960] [2020-01-16 19:06:32,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:32,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:32,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847300711] [2020-01-16 19:06:32,935 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:32,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:32,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:32,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:32,935 INFO L87 Difference]: Start difference. First operand 1582 states and 7059 transitions. Second operand 11 states. [2020-01-16 19:06:33,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:33,130 INFO L93 Difference]: Finished difference Result 2985 states and 11800 transitions. [2020-01-16 19:06:33,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:33,130 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:33,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:33,138 INFO L225 Difference]: With dead ends: 2985 [2020-01-16 19:06:33,138 INFO L226 Difference]: Without dead ends: 2956 [2020-01-16 19:06:33,139 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:33,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2020-01-16 19:06:33,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 1570. [2020-01-16 19:06:33,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 19:06:33,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7032 transitions. [2020-01-16 19:06:33,206 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7032 transitions. Word has length 28 [2020-01-16 19:06:33,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:33,206 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7032 transitions. [2020-01-16 19:06:33,206 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:33,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7032 transitions. [2020-01-16 19:06:33,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:33,209 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:33,209 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:33,209 INFO L426 AbstractCegarLoop]: === Iteration 531 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:33,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:33,209 INFO L82 PathProgramCache]: Analyzing trace with hash -801700206, now seen corresponding path program 523 times [2020-01-16 19:06:33,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:33,209 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154710827] [2020-01-16 19:06:33,209 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:33,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:33,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:33,754 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154710827] [2020-01-16 19:06:33,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:33,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:33,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594777548] [2020-01-16 19:06:33,755 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:33,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:33,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:33,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:33,755 INFO L87 Difference]: Start difference. First operand 1570 states and 7032 transitions. Second operand 11 states. [2020-01-16 19:06:33,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:33,895 INFO L93 Difference]: Finished difference Result 3012 states and 11871 transitions. [2020-01-16 19:06:33,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:33,896 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:33,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:33,903 INFO L225 Difference]: With dead ends: 3012 [2020-01-16 19:06:33,903 INFO L226 Difference]: Without dead ends: 2992 [2020-01-16 19:06:33,903 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:33,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2992 states. [2020-01-16 19:06:33,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2992 to 1590. [2020-01-16 19:06:33,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1590 states. [2020-01-16 19:06:33,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 7082 transitions. [2020-01-16 19:06:33,970 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 7082 transitions. Word has length 28 [2020-01-16 19:06:33,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:33,970 INFO L478 AbstractCegarLoop]: Abstraction has 1590 states and 7082 transitions. [2020-01-16 19:06:33,970 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:33,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 7082 transitions. [2020-01-16 19:06:33,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:33,972 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:33,972 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:33,972 INFO L426 AbstractCegarLoop]: === Iteration 532 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:33,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:33,973 INFO L82 PathProgramCache]: Analyzing trace with hash -56997708, now seen corresponding path program 524 times [2020-01-16 19:06:33,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:33,973 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436649305] [2020-01-16 19:06:33,973 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:33,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:34,524 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 19:06:34,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:34,531 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436649305] [2020-01-16 19:06:34,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:34,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:34,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380832476] [2020-01-16 19:06:34,532 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:34,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:34,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:34,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:34,532 INFO L87 Difference]: Start difference. First operand 1590 states and 7082 transitions. Second operand 11 states. [2020-01-16 19:06:34,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:34,705 INFO L93 Difference]: Finished difference Result 3010 states and 11859 transitions. [2020-01-16 19:06:34,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:34,706 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:34,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:34,713 INFO L225 Difference]: With dead ends: 3010 [2020-01-16 19:06:34,713 INFO L226 Difference]: Without dead ends: 2982 [2020-01-16 19:06:34,713 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:34,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2982 states. [2020-01-16 19:06:34,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2982 to 1580. [2020-01-16 19:06:34,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 19:06:34,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7056 transitions. [2020-01-16 19:06:34,779 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7056 transitions. Word has length 28 [2020-01-16 19:06:34,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:34,779 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7056 transitions. [2020-01-16 19:06:34,779 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:34,779 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7056 transitions. [2020-01-16 19:06:34,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:34,781 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:34,781 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:34,781 INFO L426 AbstractCegarLoop]: === Iteration 533 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:34,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:34,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1336930008, now seen corresponding path program 525 times [2020-01-16 19:06:34,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:34,782 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667416029] [2020-01-16 19:06:34,782 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:34,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:35,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:35,352 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667416029] [2020-01-16 19:06:35,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:35,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:35,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549375390] [2020-01-16 19:06:35,353 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:35,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:35,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:35,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:35,353 INFO L87 Difference]: Start difference. First operand 1580 states and 7056 transitions. Second operand 11 states. [2020-01-16 19:06:35,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:35,493 INFO L93 Difference]: Finished difference Result 3009 states and 11856 transitions. [2020-01-16 19:06:35,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:35,494 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:35,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:35,501 INFO L225 Difference]: With dead ends: 3009 [2020-01-16 19:06:35,501 INFO L226 Difference]: Without dead ends: 2989 [2020-01-16 19:06:35,502 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:35,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2020-01-16 19:06:35,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 1588. [2020-01-16 19:06:35,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1588 states. [2020-01-16 19:06:35,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 7070 transitions. [2020-01-16 19:06:35,568 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 7070 transitions. Word has length 28 [2020-01-16 19:06:35,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:35,568 INFO L478 AbstractCegarLoop]: Abstraction has 1588 states and 7070 transitions. [2020-01-16 19:06:35,568 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:35,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 7070 transitions. [2020-01-16 19:06:35,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:35,571 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:35,571 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:35,571 INFO L426 AbstractCegarLoop]: === Iteration 534 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:35,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:35,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1163682316, now seen corresponding path program 526 times [2020-01-16 19:06:35,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:35,571 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965193814] [2020-01-16 19:06:35,571 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:35,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:36,012 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 29 [2020-01-16 19:06:36,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:36,128 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965193814] [2020-01-16 19:06:36,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:36,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:36,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382919775] [2020-01-16 19:06:36,129 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:36,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:36,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:36,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:36,129 INFO L87 Difference]: Start difference. First operand 1588 states and 7070 transitions. Second operand 11 states. [2020-01-16 19:06:36,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:36,295 INFO L93 Difference]: Finished difference Result 3006 states and 11843 transitions. [2020-01-16 19:06:36,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:36,295 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:36,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:36,302 INFO L225 Difference]: With dead ends: 3006 [2020-01-16 19:06:36,302 INFO L226 Difference]: Without dead ends: 2981 [2020-01-16 19:06:36,303 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:36,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2981 states. [2020-01-16 19:06:36,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2981 to 1580. [2020-01-16 19:06:36,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 19:06:36,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7048 transitions. [2020-01-16 19:06:36,369 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7048 transitions. Word has length 28 [2020-01-16 19:06:36,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:36,369 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7048 transitions. [2020-01-16 19:06:36,369 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:36,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7048 transitions. [2020-01-16 19:06:36,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:36,371 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:36,371 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:36,371 INFO L426 AbstractCegarLoop]: === Iteration 535 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:36,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:36,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1018713448, now seen corresponding path program 527 times [2020-01-16 19:06:36,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:36,372 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596245524] [2020-01-16 19:06:36,372 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:36,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:36,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:36,902 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596245524] [2020-01-16 19:06:36,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:36,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:36,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687371405] [2020-01-16 19:06:36,902 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:36,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:36,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:36,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:36,903 INFO L87 Difference]: Start difference. First operand 1580 states and 7048 transitions. Second operand 11 states. [2020-01-16 19:06:37,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:37,082 INFO L93 Difference]: Finished difference Result 3004 states and 11840 transitions. [2020-01-16 19:06:37,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:37,083 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:37,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:37,090 INFO L225 Difference]: With dead ends: 3004 [2020-01-16 19:06:37,090 INFO L226 Difference]: Without dead ends: 2986 [2020-01-16 19:06:37,090 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:37,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2986 states. [2020-01-16 19:06:37,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2986 to 1587. [2020-01-16 19:06:37,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1587 states. [2020-01-16 19:06:37,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 7061 transitions. [2020-01-16 19:06:37,158 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 7061 transitions. Word has length 28 [2020-01-16 19:06:37,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:37,158 INFO L478 AbstractCegarLoop]: Abstraction has 1587 states and 7061 transitions. [2020-01-16 19:06:37,158 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:37,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 7061 transitions. [2020-01-16 19:06:37,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:37,160 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:37,160 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:37,160 INFO L426 AbstractCegarLoop]: === Iteration 536 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:37,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:37,161 INFO L82 PathProgramCache]: Analyzing trace with hash 447258642, now seen corresponding path program 528 times [2020-01-16 19:06:37,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:37,161 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565340980] [2020-01-16 19:06:37,161 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:37,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:37,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:37,697 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565340980] [2020-01-16 19:06:37,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:37,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:37,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179392883] [2020-01-16 19:06:37,697 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:37,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:37,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:37,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:37,697 INFO L87 Difference]: Start difference. First operand 1587 states and 7061 transitions. Second operand 11 states. [2020-01-16 19:06:37,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:37,870 INFO L93 Difference]: Finished difference Result 3003 states and 11831 transitions. [2020-01-16 19:06:37,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:37,870 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:37,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:37,878 INFO L225 Difference]: With dead ends: 3003 [2020-01-16 19:06:37,878 INFO L226 Difference]: Without dead ends: 2961 [2020-01-16 19:06:37,878 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:37,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2020-01-16 19:06:37,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 1562. [2020-01-16 19:06:37,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1562 states. [2020-01-16 19:06:37,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1562 states to 1562 states and 7010 transitions. [2020-01-16 19:06:37,945 INFO L78 Accepts]: Start accepts. Automaton has 1562 states and 7010 transitions. Word has length 28 [2020-01-16 19:06:37,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:37,945 INFO L478 AbstractCegarLoop]: Abstraction has 1562 states and 7010 transitions. [2020-01-16 19:06:37,945 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:37,945 INFO L276 IsEmpty]: Start isEmpty. Operand 1562 states and 7010 transitions. [2020-01-16 19:06:37,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:37,948 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:37,948 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:37,948 INFO L426 AbstractCegarLoop]: === Iteration 537 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:37,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:37,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1933571164, now seen corresponding path program 529 times [2020-01-16 19:06:37,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:37,948 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091034295] [2020-01-16 19:06:37,948 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:37,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:38,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:38,472 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091034295] [2020-01-16 19:06:38,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:38,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:38,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659924540] [2020-01-16 19:06:38,472 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:38,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:38,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:38,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:38,473 INFO L87 Difference]: Start difference. First operand 1562 states and 7010 transitions. Second operand 11 states. [2020-01-16 19:06:38,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:38,672 INFO L93 Difference]: Finished difference Result 2955 states and 11734 transitions. [2020-01-16 19:06:38,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:38,672 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:38,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:38,680 INFO L225 Difference]: With dead ends: 2955 [2020-01-16 19:06:38,680 INFO L226 Difference]: Without dead ends: 2940 [2020-01-16 19:06:38,681 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:38,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2940 states. [2020-01-16 19:06:38,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2940 to 1578. [2020-01-16 19:06:38,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 19:06:38,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7062 transitions. [2020-01-16 19:06:38,747 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7062 transitions. Word has length 28 [2020-01-16 19:06:38,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:38,747 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7062 transitions. [2020-01-16 19:06:38,747 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:38,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7062 transitions. [2020-01-16 19:06:38,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:38,749 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:38,749 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:38,749 INFO L426 AbstractCegarLoop]: === Iteration 538 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:38,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:38,749 INFO L82 PathProgramCache]: Analyzing trace with hash -444166168, now seen corresponding path program 530 times [2020-01-16 19:06:38,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:38,750 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649635050] [2020-01-16 19:06:38,750 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:38,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:39,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:39,275 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649635050] [2020-01-16 19:06:39,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:39,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:39,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863430162] [2020-01-16 19:06:39,276 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:39,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:39,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:39,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:39,276 INFO L87 Difference]: Start difference. First operand 1578 states and 7062 transitions. Second operand 11 states. [2020-01-16 19:06:39,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:39,441 INFO L93 Difference]: Finished difference Result 2960 states and 11738 transitions. [2020-01-16 19:06:39,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:39,441 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:39,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:39,448 INFO L225 Difference]: With dead ends: 2960 [2020-01-16 19:06:39,448 INFO L226 Difference]: Without dead ends: 2934 [2020-01-16 19:06:39,449 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:39,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2934 states. [2020-01-16 19:06:39,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2934 to 1572. [2020-01-16 19:06:39,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 19:06:39,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7046 transitions. [2020-01-16 19:06:39,514 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7046 transitions. Word has length 28 [2020-01-16 19:06:39,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:39,514 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7046 transitions. [2020-01-16 19:06:39,514 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:39,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7046 transitions. [2020-01-16 19:06:39,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:39,517 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:39,517 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:39,517 INFO L426 AbstractCegarLoop]: === Iteration 539 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:39,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:39,517 INFO L82 PathProgramCache]: Analyzing trace with hash 215225372, now seen corresponding path program 531 times [2020-01-16 19:06:39,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:39,517 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407366329] [2020-01-16 19:06:39,517 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:39,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:40,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:40,033 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407366329] [2020-01-16 19:06:40,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:40,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:40,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654790075] [2020-01-16 19:06:40,033 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:40,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:40,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:40,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:40,034 INFO L87 Difference]: Start difference. First operand 1572 states and 7046 transitions. Second operand 11 states. [2020-01-16 19:06:40,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:40,223 INFO L93 Difference]: Finished difference Result 2947 states and 11713 transitions. [2020-01-16 19:06:40,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:40,223 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:40,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:40,231 INFO L225 Difference]: With dead ends: 2947 [2020-01-16 19:06:40,231 INFO L226 Difference]: Without dead ends: 2932 [2020-01-16 19:06:40,231 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:40,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2932 states. [2020-01-16 19:06:40,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2932 to 1576. [2020-01-16 19:06:40,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 19:06:40,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7053 transitions. [2020-01-16 19:06:40,298 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7053 transitions. Word has length 28 [2020-01-16 19:06:40,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:40,299 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7053 transitions. [2020-01-16 19:06:40,299 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:40,299 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7053 transitions. [2020-01-16 19:06:40,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:40,301 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:40,301 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:40,301 INFO L426 AbstractCegarLoop]: === Iteration 540 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:40,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:40,301 INFO L82 PathProgramCache]: Analyzing trace with hash 388473064, now seen corresponding path program 532 times [2020-01-16 19:06:40,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:40,301 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432442207] [2020-01-16 19:06:40,302 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:40,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:40,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:40,829 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432442207] [2020-01-16 19:06:40,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:40,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:40,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095653909] [2020-01-16 19:06:40,829 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:40,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:40,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:40,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:40,830 INFO L87 Difference]: Start difference. First operand 1576 states and 7053 transitions. Second operand 11 states. [2020-01-16 19:06:41,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:41,022 INFO L93 Difference]: Finished difference Result 2946 states and 11707 transitions. [2020-01-16 19:06:41,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:41,023 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:41,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:41,030 INFO L225 Difference]: With dead ends: 2946 [2020-01-16 19:06:41,031 INFO L226 Difference]: Without dead ends: 2928 [2020-01-16 19:06:41,031 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:41,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2020-01-16 19:06:41,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 1572. [2020-01-16 19:06:41,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 19:06:41,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7042 transitions. [2020-01-16 19:06:41,098 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7042 transitions. Word has length 28 [2020-01-16 19:06:41,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:41,098 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7042 transitions. [2020-01-16 19:06:41,098 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:41,098 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7042 transitions. [2020-01-16 19:06:41,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:41,101 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:41,101 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:41,101 INFO L426 AbstractCegarLoop]: === Iteration 541 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:41,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:41,101 INFO L82 PathProgramCache]: Analyzing trace with hash 631544988, now seen corresponding path program 533 times [2020-01-16 19:06:41,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:41,101 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994682174] [2020-01-16 19:06:41,101 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:41,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:41,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:41,612 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994682174] [2020-01-16 19:06:41,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:41,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:41,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073913981] [2020-01-16 19:06:41,613 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:41,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:41,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:41,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:41,613 INFO L87 Difference]: Start difference. First operand 1572 states and 7042 transitions. Second operand 11 states. [2020-01-16 19:06:41,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:41,785 INFO L93 Difference]: Finished difference Result 2958 states and 11729 transitions. [2020-01-16 19:06:41,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:41,785 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:41,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:41,793 INFO L225 Difference]: With dead ends: 2958 [2020-01-16 19:06:41,793 INFO L226 Difference]: Without dead ends: 2938 [2020-01-16 19:06:41,793 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:41,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2020-01-16 19:06:41,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 1577. [2020-01-16 19:06:41,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 19:06:41,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7050 transitions. [2020-01-16 19:06:41,859 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7050 transitions. Word has length 28 [2020-01-16 19:06:41,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:41,859 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7050 transitions. [2020-01-16 19:06:41,859 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:41,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7050 transitions. [2020-01-16 19:06:41,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:41,862 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:41,862 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:41,862 INFO L426 AbstractCegarLoop]: === Iteration 542 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:41,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:41,862 INFO L82 PathProgramCache]: Analyzing trace with hash -684612316, now seen corresponding path program 534 times [2020-01-16 19:06:41,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:41,862 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222125139] [2020-01-16 19:06:41,862 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:41,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:42,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:42,378 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222125139] [2020-01-16 19:06:42,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:42,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:42,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189646785] [2020-01-16 19:06:42,379 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:42,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:42,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:42,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:42,379 INFO L87 Difference]: Start difference. First operand 1577 states and 7050 transitions. Second operand 11 states. [2020-01-16 19:06:42,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:42,565 INFO L93 Difference]: Finished difference Result 2952 states and 11713 transitions. [2020-01-16 19:06:42,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:42,565 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:42,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:42,572 INFO L225 Difference]: With dead ends: 2952 [2020-01-16 19:06:42,572 INFO L226 Difference]: Without dead ends: 2928 [2020-01-16 19:06:42,572 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:42,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2020-01-16 19:06:42,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 1567. [2020-01-16 19:06:42,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 19:06:42,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7028 transitions. [2020-01-16 19:06:42,639 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7028 transitions. Word has length 28 [2020-01-16 19:06:42,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:42,639 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7028 transitions. [2020-01-16 19:06:42,639 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:42,639 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7028 transitions. [2020-01-16 19:06:42,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:42,642 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:42,642 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:42,642 INFO L426 AbstractCegarLoop]: === Iteration 543 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:42,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:42,642 INFO L82 PathProgramCache]: Analyzing trace with hash -839479576, now seen corresponding path program 535 times [2020-01-16 19:06:42,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:42,642 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213696881] [2020-01-16 19:06:42,642 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:42,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:43,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:43,178 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213696881] [2020-01-16 19:06:43,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:43,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:43,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530174928] [2020-01-16 19:06:43,178 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:43,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:43,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:43,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:43,179 INFO L87 Difference]: Start difference. First operand 1567 states and 7028 transitions. Second operand 11 states. [2020-01-16 19:06:43,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:43,380 INFO L93 Difference]: Finished difference Result 2963 states and 11751 transitions. [2020-01-16 19:06:43,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:43,381 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:43,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:43,388 INFO L225 Difference]: With dead ends: 2963 [2020-01-16 19:06:43,388 INFO L226 Difference]: Without dead ends: 2948 [2020-01-16 19:06:43,388 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:43,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2948 states. [2020-01-16 19:06:43,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2948 to 1579. [2020-01-16 19:06:43,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 19:06:43,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7061 transitions. [2020-01-16 19:06:43,454 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7061 transitions. Word has length 28 [2020-01-16 19:06:43,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:43,455 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7061 transitions. [2020-01-16 19:06:43,455 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:43,455 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7061 transitions. [2020-01-16 19:06:43,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:43,457 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:43,457 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:43,457 INFO L426 AbstractCegarLoop]: === Iteration 544 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:43,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:43,458 INFO L82 PathProgramCache]: Analyzing trace with hash 649925420, now seen corresponding path program 536 times [2020-01-16 19:06:43,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:43,458 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223014346] [2020-01-16 19:06:43,458 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:43,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:43,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:43,982 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223014346] [2020-01-16 19:06:43,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:43,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:43,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937678366] [2020-01-16 19:06:43,983 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:43,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:43,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:43,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:43,983 INFO L87 Difference]: Start difference. First operand 1579 states and 7061 transitions. Second operand 11 states. [2020-01-16 19:06:44,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:44,186 INFO L93 Difference]: Finished difference Result 2968 states and 11755 transitions. [2020-01-16 19:06:44,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:44,186 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:44,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:44,194 INFO L225 Difference]: With dead ends: 2968 [2020-01-16 19:06:44,194 INFO L226 Difference]: Without dead ends: 2942 [2020-01-16 19:06:44,194 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:44,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2020-01-16 19:06:44,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 1573. [2020-01-16 19:06:44,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:06:44,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7044 transitions. [2020-01-16 19:06:44,260 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7044 transitions. Word has length 28 [2020-01-16 19:06:44,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:44,260 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7044 transitions. [2020-01-16 19:06:44,260 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:44,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7044 transitions. [2020-01-16 19:06:44,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:44,263 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:44,263 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:44,263 INFO L426 AbstractCegarLoop]: === Iteration 545 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:44,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:44,263 INFO L82 PathProgramCache]: Analyzing trace with hash 236231580, now seen corresponding path program 537 times [2020-01-16 19:06:44,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:44,263 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086013535] [2020-01-16 19:06:44,263 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:44,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:44,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:44,787 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086013535] [2020-01-16 19:06:44,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:44,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:44,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481870028] [2020-01-16 19:06:44,787 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:44,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:44,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:44,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:44,788 INFO L87 Difference]: Start difference. First operand 1573 states and 7044 transitions. Second operand 11 states. [2020-01-16 19:06:45,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:45,014 INFO L93 Difference]: Finished difference Result 2959 states and 11738 transitions. [2020-01-16 19:06:45,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:45,015 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:45,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:45,022 INFO L225 Difference]: With dead ends: 2959 [2020-01-16 19:06:45,022 INFO L226 Difference]: Without dead ends: 2944 [2020-01-16 19:06:45,022 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:45,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2944 states. [2020-01-16 19:06:45,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2944 to 1578. [2020-01-16 19:06:45,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 19:06:45,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7053 transitions. [2020-01-16 19:06:45,088 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7053 transitions. Word has length 28 [2020-01-16 19:06:45,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:45,088 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7053 transitions. [2020-01-16 19:06:45,088 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:45,088 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7053 transitions. [2020-01-16 19:06:45,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:45,091 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:45,091 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:45,091 INFO L426 AbstractCegarLoop]: === Iteration 546 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:45,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:45,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1898884268, now seen corresponding path program 538 times [2020-01-16 19:06:45,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:45,091 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086642775] [2020-01-16 19:06:45,091 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:45,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:45,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:45,599 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086642775] [2020-01-16 19:06:45,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:45,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:45,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005019954] [2020-01-16 19:06:45,599 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:45,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:45,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:45,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:45,600 INFO L87 Difference]: Start difference. First operand 1578 states and 7053 transitions. Second operand 11 states. [2020-01-16 19:06:45,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:45,824 INFO L93 Difference]: Finished difference Result 2961 states and 11737 transitions. [2020-01-16 19:06:45,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:45,824 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:45,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:45,831 INFO L225 Difference]: With dead ends: 2961 [2020-01-16 19:06:45,831 INFO L226 Difference]: Without dead ends: 2939 [2020-01-16 19:06:45,831 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:45,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2939 states. [2020-01-16 19:06:45,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2939 to 1573. [2020-01-16 19:06:45,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:06:45,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7039 transitions. [2020-01-16 19:06:45,897 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7039 transitions. Word has length 28 [2020-01-16 19:06:45,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:45,897 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7039 transitions. [2020-01-16 19:06:45,897 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:45,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7039 transitions. [2020-01-16 19:06:45,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:45,900 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:45,900 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:45,900 INFO L426 AbstractCegarLoop]: === Iteration 547 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:45,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:45,900 INFO L82 PathProgramCache]: Analyzing trace with hash 652551196, now seen corresponding path program 539 times [2020-01-16 19:06:45,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:45,900 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137471447] [2020-01-16 19:06:45,900 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:45,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:46,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:46,424 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137471447] [2020-01-16 19:06:46,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:46,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:46,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5188221] [2020-01-16 19:06:46,425 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:46,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:46,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:46,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:46,425 INFO L87 Difference]: Start difference. First operand 1573 states and 7039 transitions. Second operand 11 states. [2020-01-16 19:06:46,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:46,573 INFO L93 Difference]: Finished difference Result 2972 states and 11759 transitions. [2020-01-16 19:06:46,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:46,574 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:46,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:46,580 INFO L225 Difference]: With dead ends: 2972 [2020-01-16 19:06:46,581 INFO L226 Difference]: Without dead ends: 2952 [2020-01-16 19:06:46,581 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:46,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2020-01-16 19:06:46,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 1581. [2020-01-16 19:06:46,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 19:06:46,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7053 transitions. [2020-01-16 19:06:46,647 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7053 transitions. Word has length 28 [2020-01-16 19:06:46,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:46,647 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7053 transitions. [2020-01-16 19:06:46,648 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:46,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7053 transitions. [2020-01-16 19:06:46,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:46,650 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:46,650 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:46,650 INFO L426 AbstractCegarLoop]: === Iteration 548 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:46,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:46,650 INFO L82 PathProgramCache]: Analyzing trace with hash 825798888, now seen corresponding path program 540 times [2020-01-16 19:06:46,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:46,650 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795403792] [2020-01-16 19:06:46,650 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:46,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:47,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:47,182 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795403792] [2020-01-16 19:06:47,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:47,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:47,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37052978] [2020-01-16 19:06:47,183 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:47,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:47,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:47,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:47,183 INFO L87 Difference]: Start difference. First operand 1581 states and 7053 transitions. Second operand 11 states. [2020-01-16 19:06:47,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:47,391 INFO L93 Difference]: Finished difference Result 2969 states and 11746 transitions. [2020-01-16 19:06:47,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:47,391 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:47,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:47,421 INFO L225 Difference]: With dead ends: 2969 [2020-01-16 19:06:47,421 INFO L226 Difference]: Without dead ends: 2938 [2020-01-16 19:06:47,421 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:47,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2020-01-16 19:06:47,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 1567. [2020-01-16 19:06:47,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 19:06:47,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7023 transitions. [2020-01-16 19:06:47,485 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7023 transitions. Word has length 28 [2020-01-16 19:06:47,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:47,485 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7023 transitions. [2020-01-16 19:06:47,485 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:47,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7023 transitions. [2020-01-16 19:06:47,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:47,487 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:47,487 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:47,487 INFO L426 AbstractCegarLoop]: === Iteration 549 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:47,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:47,488 INFO L82 PathProgramCache]: Analyzing trace with hash -797467160, now seen corresponding path program 541 times [2020-01-16 19:06:47,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:47,488 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376026146] [2020-01-16 19:06:47,488 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:47,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:48,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:48,008 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376026146] [2020-01-16 19:06:48,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:48,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:48,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032549164] [2020-01-16 19:06:48,008 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:48,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:48,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:48,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:48,009 INFO L87 Difference]: Start difference. First operand 1567 states and 7023 transitions. Second operand 11 states. [2020-01-16 19:06:48,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:48,236 INFO L93 Difference]: Finished difference Result 2941 states and 11696 transitions. [2020-01-16 19:06:48,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:48,236 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:48,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:48,244 INFO L225 Difference]: With dead ends: 2941 [2020-01-16 19:06:48,244 INFO L226 Difference]: Without dead ends: 2926 [2020-01-16 19:06:48,244 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:48,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2020-01-16 19:06:48,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 1575. [2020-01-16 19:06:48,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:06:48,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7045 transitions. [2020-01-16 19:06:48,310 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7045 transitions. Word has length 28 [2020-01-16 19:06:48,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:48,310 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7045 transitions. [2020-01-16 19:06:48,311 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:48,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7045 transitions. [2020-01-16 19:06:48,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:48,313 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:48,313 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:48,313 INFO L426 AbstractCegarLoop]: === Iteration 550 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:48,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:48,313 INFO L82 PathProgramCache]: Analyzing trace with hash -624219468, now seen corresponding path program 542 times [2020-01-16 19:06:48,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:48,313 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224694138] [2020-01-16 19:06:48,313 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:48,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:48,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:48,836 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224694138] [2020-01-16 19:06:48,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:48,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:48,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543058478] [2020-01-16 19:06:48,837 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:48,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:48,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:48,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:48,837 INFO L87 Difference]: Start difference. First operand 1575 states and 7045 transitions. Second operand 11 states. [2020-01-16 19:06:49,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:49,016 INFO L93 Difference]: Finished difference Result 2940 states and 11690 transitions. [2020-01-16 19:06:49,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:49,017 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:49,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:49,024 INFO L225 Difference]: With dead ends: 2940 [2020-01-16 19:06:49,024 INFO L226 Difference]: Without dead ends: 2922 [2020-01-16 19:06:49,024 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:49,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2922 states. [2020-01-16 19:06:49,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2922 to 1571. [2020-01-16 19:06:49,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:06:49,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7034 transitions. [2020-01-16 19:06:49,090 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7034 transitions. Word has length 28 [2020-01-16 19:06:49,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:49,090 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7034 transitions. [2020-01-16 19:06:49,090 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:49,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7034 transitions. [2020-01-16 19:06:49,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:49,093 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:49,093 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:49,094 INFO L426 AbstractCegarLoop]: === Iteration 551 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:49,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:49,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1870552540, now seen corresponding path program 543 times [2020-01-16 19:06:49,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:49,094 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136709889] [2020-01-16 19:06:49,094 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:49,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:49,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:49,618 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136709889] [2020-01-16 19:06:49,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:49,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:49,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567147840] [2020-01-16 19:06:49,618 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:49,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:49,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:49,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:49,619 INFO L87 Difference]: Start difference. First operand 1571 states and 7034 transitions. Second operand 11 states. [2020-01-16 19:06:49,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:49,803 INFO L93 Difference]: Finished difference Result 2945 states and 11701 transitions. [2020-01-16 19:06:49,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:49,803 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:49,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:49,810 INFO L225 Difference]: With dead ends: 2945 [2020-01-16 19:06:49,810 INFO L226 Difference]: Without dead ends: 2930 [2020-01-16 19:06:49,810 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:49,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2020-01-16 19:06:49,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1576. [2020-01-16 19:06:49,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 19:06:49,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7043 transitions. [2020-01-16 19:06:49,876 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7043 transitions. Word has length 28 [2020-01-16 19:06:49,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:49,876 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7043 transitions. [2020-01-16 19:06:49,876 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:49,876 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7043 transitions. [2020-01-16 19:06:49,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:49,878 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:49,879 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:49,879 INFO L426 AbstractCegarLoop]: === Iteration 552 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:49,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:49,879 INFO L82 PathProgramCache]: Analyzing trace with hash -207899852, now seen corresponding path program 544 times [2020-01-16 19:06:49,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:49,879 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024711609] [2020-01-16 19:06:49,879 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:49,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:50,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:50,391 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024711609] [2020-01-16 19:06:50,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:50,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:50,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337361888] [2020-01-16 19:06:50,392 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:50,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:50,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:50,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:50,392 INFO L87 Difference]: Start difference. First operand 1576 states and 7043 transitions. Second operand 11 states. [2020-01-16 19:06:50,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:50,581 INFO L93 Difference]: Finished difference Result 2947 states and 11700 transitions. [2020-01-16 19:06:50,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:50,581 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:50,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:50,587 INFO L225 Difference]: With dead ends: 2947 [2020-01-16 19:06:50,588 INFO L226 Difference]: Without dead ends: 2925 [2020-01-16 19:06:50,588 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:50,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2925 states. [2020-01-16 19:06:50,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2925 to 1571. [2020-01-16 19:06:50,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:06:50,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7030 transitions. [2020-01-16 19:06:50,653 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7030 transitions. Word has length 28 [2020-01-16 19:06:50,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:50,654 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7030 transitions. [2020-01-16 19:06:50,654 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:50,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7030 transitions. [2020-01-16 19:06:50,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:50,656 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:50,656 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:50,656 INFO L426 AbstractCegarLoop]: === Iteration 553 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:50,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:50,656 INFO L82 PathProgramCache]: Analyzing trace with hash -621593692, now seen corresponding path program 545 times [2020-01-16 19:06:50,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:50,656 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751445728] [2020-01-16 19:06:50,656 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:50,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:51,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:51,173 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751445728] [2020-01-16 19:06:51,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:51,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:51,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836342567] [2020-01-16 19:06:51,174 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:51,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:51,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:51,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:51,174 INFO L87 Difference]: Start difference. First operand 1571 states and 7030 transitions. Second operand 11 states. [2020-01-16 19:06:51,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:51,373 INFO L93 Difference]: Finished difference Result 2942 states and 11690 transitions. [2020-01-16 19:06:51,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:51,374 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:51,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:51,381 INFO L225 Difference]: With dead ends: 2942 [2020-01-16 19:06:51,381 INFO L226 Difference]: Without dead ends: 2928 [2020-01-16 19:06:51,381 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:51,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2020-01-16 19:06:51,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 1575. [2020-01-16 19:06:51,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:06:51,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7037 transitions. [2020-01-16 19:06:51,447 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7037 transitions. Word has length 28 [2020-01-16 19:06:51,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:51,447 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7037 transitions. [2020-01-16 19:06:51,447 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:51,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7037 transitions. [2020-01-16 19:06:51,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:51,449 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:51,449 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:51,449 INFO L426 AbstractCegarLoop]: === Iteration 554 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:51,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:51,450 INFO L82 PathProgramCache]: Analyzing trace with hash 867811304, now seen corresponding path program 546 times [2020-01-16 19:06:51,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:51,450 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200597972] [2020-01-16 19:06:51,450 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:51,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:51,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:51,961 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200597972] [2020-01-16 19:06:51,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:51,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:51,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978442857] [2020-01-16 19:06:51,962 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:51,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:51,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:51,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:51,962 INFO L87 Difference]: Start difference. First operand 1575 states and 7037 transitions. Second operand 11 states. [2020-01-16 19:06:52,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:52,164 INFO L93 Difference]: Finished difference Result 2945 states and 11692 transitions. [2020-01-16 19:06:52,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:52,164 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:52,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:52,172 INFO L225 Difference]: With dead ends: 2945 [2020-01-16 19:06:52,172 INFO L226 Difference]: Without dead ends: 2920 [2020-01-16 19:06:52,172 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:52,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2920 states. [2020-01-16 19:06:52,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2920 to 1567. [2020-01-16 19:06:52,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 19:06:52,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7019 transitions. [2020-01-16 19:06:52,238 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7019 transitions. Word has length 28 [2020-01-16 19:06:52,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:52,238 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7019 transitions. [2020-01-16 19:06:52,238 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:52,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7019 transitions. [2020-01-16 19:06:52,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:52,240 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:52,240 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:52,240 INFO L426 AbstractCegarLoop]: === Iteration 555 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:52,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:52,240 INFO L82 PathProgramCache]: Analyzing trace with hash 712944044, now seen corresponding path program 547 times [2020-01-16 19:06:52,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:52,241 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562791619] [2020-01-16 19:06:52,241 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:52,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:52,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:52,763 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562791619] [2020-01-16 19:06:52,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:52,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:52,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320120065] [2020-01-16 19:06:52,764 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:52,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:52,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:52,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:52,764 INFO L87 Difference]: Start difference. First operand 1567 states and 7019 transitions. Second operand 11 states. [2020-01-16 19:06:52,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:52,934 INFO L93 Difference]: Finished difference Result 2962 states and 11734 transitions. [2020-01-16 19:06:52,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:52,934 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:52,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:52,941 INFO L225 Difference]: With dead ends: 2962 [2020-01-16 19:06:52,941 INFO L226 Difference]: Without dead ends: 2942 [2020-01-16 19:06:52,941 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:52,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2020-01-16 19:06:53,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 1577. [2020-01-16 19:06:53,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 19:06:53,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7045 transitions. [2020-01-16 19:06:53,007 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7045 transitions. Word has length 28 [2020-01-16 19:06:53,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:53,007 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7045 transitions. [2020-01-16 19:06:53,008 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:53,008 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7045 transitions. [2020-01-16 19:06:53,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:53,010 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:53,010 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:53,010 INFO L426 AbstractCegarLoop]: === Iteration 556 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:53,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:53,010 INFO L82 PathProgramCache]: Analyzing trace with hash -603213260, now seen corresponding path program 548 times [2020-01-16 19:06:53,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:53,010 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226769648] [2020-01-16 19:06:53,010 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:53,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:53,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:53,536 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226769648] [2020-01-16 19:06:53,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:53,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:53,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16305773] [2020-01-16 19:06:53,537 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:53,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:53,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:53,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:53,537 INFO L87 Difference]: Start difference. First operand 1577 states and 7045 transitions. Second operand 11 states. [2020-01-16 19:06:53,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:53,746 INFO L93 Difference]: Finished difference Result 2956 states and 11718 transitions. [2020-01-16 19:06:53,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:53,746 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:53,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:53,753 INFO L225 Difference]: With dead ends: 2956 [2020-01-16 19:06:53,753 INFO L226 Difference]: Without dead ends: 2937 [2020-01-16 19:06:53,753 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:53,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2020-01-16 19:06:53,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 1572. [2020-01-16 19:06:53,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 19:06:53,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7032 transitions. [2020-01-16 19:06:53,819 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7032 transitions. Word has length 28 [2020-01-16 19:06:53,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:53,819 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7032 transitions. [2020-01-16 19:06:53,819 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:53,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7032 transitions. [2020-01-16 19:06:53,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:53,822 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:53,822 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:53,822 INFO L426 AbstractCegarLoop]: === Iteration 557 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:53,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:53,822 INFO L82 PathProgramCache]: Analyzing trace with hash -360141336, now seen corresponding path program 549 times [2020-01-16 19:06:53,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:53,822 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287303953] [2020-01-16 19:06:53,822 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:53,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:54,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:54,343 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287303953] [2020-01-16 19:06:54,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:54,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:54,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199794045] [2020-01-16 19:06:54,344 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:54,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:54,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:54,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:54,344 INFO L87 Difference]: Start difference. First operand 1572 states and 7032 transitions. Second operand 11 states. [2020-01-16 19:06:54,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:54,514 INFO L93 Difference]: Finished difference Result 2968 states and 11744 transitions. [2020-01-16 19:06:54,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:54,514 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:54,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:54,522 INFO L225 Difference]: With dead ends: 2968 [2020-01-16 19:06:54,522 INFO L226 Difference]: Without dead ends: 2948 [2020-01-16 19:06:54,522 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:54,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2948 states. [2020-01-16 19:06:54,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2948 to 1580. [2020-01-16 19:06:54,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 19:06:54,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7046 transitions. [2020-01-16 19:06:54,593 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7046 transitions. Word has length 28 [2020-01-16 19:06:54,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:54,593 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7046 transitions. [2020-01-16 19:06:54,593 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:54,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7046 transitions. [2020-01-16 19:06:54,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:54,596 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:54,596 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:54,596 INFO L426 AbstractCegarLoop]: === Iteration 558 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:54,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:54,596 INFO L82 PathProgramCache]: Analyzing trace with hash -186893644, now seen corresponding path program 550 times [2020-01-16 19:06:54,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:54,596 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114673289] [2020-01-16 19:06:54,597 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:54,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:55,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:55,119 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114673289] [2020-01-16 19:06:55,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:55,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:55,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599950932] [2020-01-16 19:06:55,120 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:55,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:55,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:55,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:55,120 INFO L87 Difference]: Start difference. First operand 1580 states and 7046 transitions. Second operand 11 states. [2020-01-16 19:06:55,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:55,376 INFO L93 Difference]: Finished difference Result 2965 states and 11731 transitions. [2020-01-16 19:06:55,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:55,376 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:55,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:55,384 INFO L225 Difference]: With dead ends: 2965 [2020-01-16 19:06:55,384 INFO L226 Difference]: Without dead ends: 2940 [2020-01-16 19:06:55,384 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:55,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2940 states. [2020-01-16 19:06:55,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2940 to 1572. [2020-01-16 19:06:55,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 19:06:55,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7027 transitions. [2020-01-16 19:06:55,450 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7027 transitions. Word has length 28 [2020-01-16 19:06:55,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:55,450 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7027 transitions. [2020-01-16 19:06:55,451 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:55,451 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7027 transitions. [2020-01-16 19:06:55,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:55,453 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:55,453 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:55,453 INFO L426 AbstractCegarLoop]: === Iteration 559 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:55,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:55,453 INFO L82 PathProgramCache]: Analyzing trace with hash 472497896, now seen corresponding path program 551 times [2020-01-16 19:06:55,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:55,453 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387474202] [2020-01-16 19:06:55,453 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:55,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:55,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:55,970 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387474202] [2020-01-16 19:06:55,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:55,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:55,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663858716] [2020-01-16 19:06:55,970 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:55,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:55,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:55,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:55,971 INFO L87 Difference]: Start difference. First operand 1572 states and 7027 transitions. Second operand 11 states. [2020-01-16 19:06:56,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:56,162 INFO L93 Difference]: Finished difference Result 2952 states and 11706 transitions. [2020-01-16 19:06:56,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:56,163 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:56,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:56,170 INFO L225 Difference]: With dead ends: 2952 [2020-01-16 19:06:56,170 INFO L226 Difference]: Without dead ends: 2938 [2020-01-16 19:06:56,170 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:56,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2020-01-16 19:06:56,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 1576. [2020-01-16 19:06:56,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 19:06:56,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7034 transitions. [2020-01-16 19:06:56,236 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7034 transitions. Word has length 28 [2020-01-16 19:06:56,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:56,236 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7034 transitions. [2020-01-16 19:06:56,236 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:56,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7034 transitions. [2020-01-16 19:06:56,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:56,239 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:56,239 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:56,239 INFO L426 AbstractCegarLoop]: === Iteration 560 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:56,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:56,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1961902892, now seen corresponding path program 552 times [2020-01-16 19:06:56,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:56,239 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258432837] [2020-01-16 19:06:56,239 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:56,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:56,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:56,757 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258432837] [2020-01-16 19:06:56,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:56,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:56,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271176523] [2020-01-16 19:06:56,758 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:56,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:56,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:56,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:56,758 INFO L87 Difference]: Start difference. First operand 1576 states and 7034 transitions. Second operand 11 states. [2020-01-16 19:06:57,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:57,014 INFO L93 Difference]: Finished difference Result 2955 states and 11708 transitions. [2020-01-16 19:06:57,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:57,015 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:57,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:57,022 INFO L225 Difference]: With dead ends: 2955 [2020-01-16 19:06:57,022 INFO L226 Difference]: Without dead ends: 2924 [2020-01-16 19:06:57,023 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:57,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2924 states. [2020-01-16 19:06:57,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2924 to 1562. [2020-01-16 19:06:57,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1562 states. [2020-01-16 19:06:57,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1562 states to 1562 states and 7005 transitions. [2020-01-16 19:06:57,090 INFO L78 Accepts]: Start accepts. Automaton has 1562 states and 7005 transitions. Word has length 28 [2020-01-16 19:06:57,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:57,090 INFO L478 AbstractCegarLoop]: Abstraction has 1562 states and 7005 transitions. [2020-01-16 19:06:57,090 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:57,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1562 states and 7005 transitions. [2020-01-16 19:06:57,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:57,092 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:57,092 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:57,093 INFO L426 AbstractCegarLoop]: === Iteration 561 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:57,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:57,093 INFO L82 PathProgramCache]: Analyzing trace with hash 2966018, now seen corresponding path program 553 times [2020-01-16 19:06:57,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:57,093 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369774191] [2020-01-16 19:06:57,093 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:57,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:57,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:57,617 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369774191] [2020-01-16 19:06:57,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:57,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:57,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82140982] [2020-01-16 19:06:57,617 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:57,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:57,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:57,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:57,618 INFO L87 Difference]: Start difference. First operand 1562 states and 7005 transitions. Second operand 11 states. [2020-01-16 19:06:57,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:57,830 INFO L93 Difference]: Finished difference Result 2938 states and 11692 transitions. [2020-01-16 19:06:57,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:57,831 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:57,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:57,838 INFO L225 Difference]: With dead ends: 2938 [2020-01-16 19:06:57,838 INFO L226 Difference]: Without dead ends: 2923 [2020-01-16 19:06:57,838 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:57,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2923 states. [2020-01-16 19:06:57,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2923 to 1575. [2020-01-16 19:06:57,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:06:57,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7048 transitions. [2020-01-16 19:06:57,903 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7048 transitions. Word has length 28 [2020-01-16 19:06:57,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:57,904 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7048 transitions. [2020-01-16 19:06:57,904 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:57,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7048 transitions. [2020-01-16 19:06:57,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:57,906 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:57,906 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:57,906 INFO L426 AbstractCegarLoop]: === Iteration 562 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:57,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:57,906 INFO L82 PathProgramCache]: Analyzing trace with hash -2057893784, now seen corresponding path program 554 times [2020-01-16 19:06:57,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:57,906 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769183505] [2020-01-16 19:06:57,906 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:57,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:58,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:58,444 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769183505] [2020-01-16 19:06:58,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:58,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:58,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225446131] [2020-01-16 19:06:58,444 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:58,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:58,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:58,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:58,445 INFO L87 Difference]: Start difference. First operand 1575 states and 7048 transitions. Second operand 11 states. [2020-01-16 19:06:58,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:58,710 INFO L93 Difference]: Finished difference Result 2941 states and 11693 transitions. [2020-01-16 19:06:58,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:58,710 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:58,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:58,717 INFO L225 Difference]: With dead ends: 2941 [2020-01-16 19:06:58,717 INFO L226 Difference]: Without dead ends: 2918 [2020-01-16 19:06:58,717 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:58,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2918 states. [2020-01-16 19:06:58,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2918 to 1570. [2020-01-16 19:06:58,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 19:06:58,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7035 transitions. [2020-01-16 19:06:58,785 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7035 transitions. Word has length 28 [2020-01-16 19:06:58,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:58,785 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7035 transitions. [2020-01-16 19:06:58,785 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:58,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7035 transitions. [2020-01-16 19:06:58,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:58,787 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:58,787 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:58,787 INFO L426 AbstractCegarLoop]: === Iteration 563 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:58,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:58,787 INFO L82 PathProgramCache]: Analyzing trace with hash 540821596, now seen corresponding path program 555 times [2020-01-16 19:06:58,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:58,788 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065533227] [2020-01-16 19:06:58,788 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:58,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:06:59,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:06:59,339 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065533227] [2020-01-16 19:06:59,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:06:59,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:06:59,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67621145] [2020-01-16 19:06:59,339 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:06:59,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:06:59,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:06:59,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:06:59,340 INFO L87 Difference]: Start difference. First operand 1570 states and 7035 transitions. Second operand 11 states. [2020-01-16 19:06:59,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:06:59,601 INFO L93 Difference]: Finished difference Result 2933 states and 11677 transitions. [2020-01-16 19:06:59,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:06:59,602 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:06:59,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:06:59,609 INFO L225 Difference]: With dead ends: 2933 [2020-01-16 19:06:59,610 INFO L226 Difference]: Without dead ends: 2918 [2020-01-16 19:06:59,610 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:06:59,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2918 states. [2020-01-16 19:06:59,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2918 to 1574. [2020-01-16 19:06:59,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 19:06:59,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7042 transitions. [2020-01-16 19:06:59,677 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7042 transitions. Word has length 28 [2020-01-16 19:06:59,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:06:59,677 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7042 transitions. [2020-01-16 19:06:59,677 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:06:59,677 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7042 transitions. [2020-01-16 19:06:59,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:06:59,679 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:06:59,680 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:06:59,680 INFO L426 AbstractCegarLoop]: === Iteration 564 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:06:59,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:06:59,680 INFO L82 PathProgramCache]: Analyzing trace with hash 714069288, now seen corresponding path program 556 times [2020-01-16 19:06:59,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:06:59,680 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121376452] [2020-01-16 19:06:59,680 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:06:59,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:00,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:00,201 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121376452] [2020-01-16 19:07:00,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:00,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:00,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624434775] [2020-01-16 19:07:00,201 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:00,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:00,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:00,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:00,202 INFO L87 Difference]: Start difference. First operand 1574 states and 7042 transitions. Second operand 11 states. [2020-01-16 19:07:00,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:00,441 INFO L93 Difference]: Finished difference Result 2932 states and 11671 transitions. [2020-01-16 19:07:00,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:00,441 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:00,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:00,448 INFO L225 Difference]: With dead ends: 2932 [2020-01-16 19:07:00,448 INFO L226 Difference]: Without dead ends: 2914 [2020-01-16 19:07:00,448 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:00,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2914 states. [2020-01-16 19:07:00,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2914 to 1570. [2020-01-16 19:07:00,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 19:07:00,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7031 transitions. [2020-01-16 19:07:00,514 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7031 transitions. Word has length 28 [2020-01-16 19:07:00,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:00,514 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7031 transitions. [2020-01-16 19:07:00,514 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:00,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7031 transitions. [2020-01-16 19:07:00,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:00,516 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:00,516 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:00,516 INFO L426 AbstractCegarLoop]: === Iteration 565 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:00,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:00,517 INFO L82 PathProgramCache]: Analyzing trace with hash -982182628, now seen corresponding path program 557 times [2020-01-16 19:07:00,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:00,517 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59084884] [2020-01-16 19:07:00,517 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:00,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:01,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:01,035 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59084884] [2020-01-16 19:07:01,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:01,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:01,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105738730] [2020-01-16 19:07:01,035 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:01,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:01,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:01,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:01,036 INFO L87 Difference]: Start difference. First operand 1570 states and 7031 transitions. Second operand 11 states. [2020-01-16 19:07:01,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:01,299 INFO L93 Difference]: Finished difference Result 2939 states and 11685 transitions. [2020-01-16 19:07:01,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:01,300 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:01,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:01,307 INFO L225 Difference]: With dead ends: 2939 [2020-01-16 19:07:01,307 INFO L226 Difference]: Without dead ends: 2921 [2020-01-16 19:07:01,307 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:01,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2020-01-16 19:07:01,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 1574. [2020-01-16 19:07:01,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 19:07:01,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7038 transitions. [2020-01-16 19:07:01,375 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7038 transitions. Word has length 28 [2020-01-16 19:07:01,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:01,375 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7038 transitions. [2020-01-16 19:07:01,375 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:01,375 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7038 transitions. [2020-01-16 19:07:01,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:01,377 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:01,377 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:01,377 INFO L426 AbstractCegarLoop]: === Iteration 566 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:01,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:01,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1251924866, now seen corresponding path program 558 times [2020-01-16 19:07:01,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:01,378 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718722802] [2020-01-16 19:07:01,378 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:01,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:01,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:01,887 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718722802] [2020-01-16 19:07:01,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:01,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:01,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810976622] [2020-01-16 19:07:01,887 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:01,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:01,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:01,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:01,888 INFO L87 Difference]: Start difference. First operand 1574 states and 7038 transitions. Second operand 11 states. [2020-01-16 19:07:02,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:02,152 INFO L93 Difference]: Finished difference Result 2935 states and 11673 transitions. [2020-01-16 19:07:02,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:02,153 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:02,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:02,160 INFO L225 Difference]: With dead ends: 2935 [2020-01-16 19:07:02,160 INFO L226 Difference]: Without dead ends: 2913 [2020-01-16 19:07:02,161 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:02,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2913 states. [2020-01-16 19:07:02,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2913 to 1566. [2020-01-16 19:07:02,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1566 states. [2020-01-16 19:07:02,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 7020 transitions. [2020-01-16 19:07:02,226 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 7020 transitions. Word has length 28 [2020-01-16 19:07:02,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:02,227 INFO L478 AbstractCegarLoop]: Abstraction has 1566 states and 7020 transitions. [2020-01-16 19:07:02,227 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:02,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 7020 transitions. [2020-01-16 19:07:02,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:02,229 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:02,229 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:02,229 INFO L426 AbstractCegarLoop]: === Iteration 567 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:02,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:02,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1097057606, now seen corresponding path program 559 times [2020-01-16 19:07:02,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:02,229 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986657385] [2020-01-16 19:07:02,230 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:02,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:02,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:02,742 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986657385] [2020-01-16 19:07:02,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:02,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:02,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988398994] [2020-01-16 19:07:02,743 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:02,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:02,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:02,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:02,743 INFO L87 Difference]: Start difference. First operand 1566 states and 7020 transitions. Second operand 11 states. [2020-01-16 19:07:03,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:03,009 INFO L93 Difference]: Finished difference Result 2946 states and 11710 transitions. [2020-01-16 19:07:03,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:03,009 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:03,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:03,017 INFO L225 Difference]: With dead ends: 2946 [2020-01-16 19:07:03,017 INFO L226 Difference]: Without dead ends: 2931 [2020-01-16 19:07:03,017 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:03,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2931 states. [2020-01-16 19:07:03,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2931 to 1576. [2020-01-16 19:07:03,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 19:07:03,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7048 transitions. [2020-01-16 19:07:03,082 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7048 transitions. Word has length 28 [2020-01-16 19:07:03,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:03,083 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7048 transitions. [2020-01-16 19:07:03,083 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:03,083 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7048 transitions. [2020-01-16 19:07:03,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:03,085 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:03,085 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:03,085 INFO L426 AbstractCegarLoop]: === Iteration 568 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:03,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:03,085 INFO L82 PathProgramCache]: Analyzing trace with hash -963802196, now seen corresponding path program 560 times [2020-01-16 19:07:03,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:03,085 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557920460] [2020-01-16 19:07:03,086 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:03,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:03,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:03,607 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557920460] [2020-01-16 19:07:03,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:03,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:03,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023602296] [2020-01-16 19:07:03,608 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:03,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:03,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:03,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:03,608 INFO L87 Difference]: Start difference. First operand 1576 states and 7048 transitions. Second operand 11 states. [2020-01-16 19:07:03,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:03,875 INFO L93 Difference]: Finished difference Result 2949 states and 11711 transitions. [2020-01-16 19:07:03,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:03,876 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:03,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:03,883 INFO L225 Difference]: With dead ends: 2949 [2020-01-16 19:07:03,884 INFO L226 Difference]: Without dead ends: 2926 [2020-01-16 19:07:03,884 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:03,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2020-01-16 19:07:03,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 1571. [2020-01-16 19:07:03,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:07:03,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7034 transitions. [2020-01-16 19:07:03,950 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7034 transitions. Word has length 28 [2020-01-16 19:07:03,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:03,950 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7034 transitions. [2020-01-16 19:07:03,950 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:03,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7034 transitions. [2020-01-16 19:07:03,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:03,952 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:03,952 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:03,953 INFO L426 AbstractCegarLoop]: === Iteration 569 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:03,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:03,953 INFO L82 PathProgramCache]: Analyzing trace with hash 561827804, now seen corresponding path program 561 times [2020-01-16 19:07:03,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:03,953 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337902851] [2020-01-16 19:07:03,953 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:03,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:04,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:04,464 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337902851] [2020-01-16 19:07:04,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:04,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:04,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460633373] [2020-01-16 19:07:04,464 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:04,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:04,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:04,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:04,464 INFO L87 Difference]: Start difference. First operand 1571 states and 7034 transitions. Second operand 11 states. [2020-01-16 19:07:04,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:04,632 INFO L93 Difference]: Finished difference Result 2945 states and 11703 transitions. [2020-01-16 19:07:04,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:04,632 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:04,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:04,639 INFO L225 Difference]: With dead ends: 2945 [2020-01-16 19:07:04,640 INFO L226 Difference]: Without dead ends: 2930 [2020-01-16 19:07:04,640 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:04,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2020-01-16 19:07:04,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1576. [2020-01-16 19:07:04,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 19:07:04,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7043 transitions. [2020-01-16 19:07:04,705 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7043 transitions. Word has length 28 [2020-01-16 19:07:04,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:04,706 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7043 transitions. [2020-01-16 19:07:04,706 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:04,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7043 transitions. [2020-01-16 19:07:04,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:04,708 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:04,708 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:04,708 INFO L426 AbstractCegarLoop]: === Iteration 570 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:04,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:04,708 INFO L82 PathProgramCache]: Analyzing trace with hash -2070486804, now seen corresponding path program 562 times [2020-01-16 19:07:04,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:04,708 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191109586] [2020-01-16 19:07:04,709 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:04,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:05,250 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 19:07:05,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:05,257 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191109586] [2020-01-16 19:07:05,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:05,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:05,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8817271] [2020-01-16 19:07:05,257 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:05,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:05,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:05,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:05,258 INFO L87 Difference]: Start difference. First operand 1576 states and 7043 transitions. Second operand 11 states. [2020-01-16 19:07:05,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:05,435 INFO L93 Difference]: Finished difference Result 2947 states and 11702 transitions. [2020-01-16 19:07:05,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:05,435 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:05,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:05,443 INFO L225 Difference]: With dead ends: 2947 [2020-01-16 19:07:05,443 INFO L226 Difference]: Without dead ends: 2925 [2020-01-16 19:07:05,443 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:05,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2925 states. [2020-01-16 19:07:05,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2925 to 1571. [2020-01-16 19:07:05,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:07:05,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7029 transitions. [2020-01-16 19:07:05,510 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7029 transitions. Word has length 28 [2020-01-16 19:07:05,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:05,510 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7029 transitions. [2020-01-16 19:07:05,510 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:05,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7029 transitions. [2020-01-16 19:07:05,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:05,512 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:05,512 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:05,513 INFO L426 AbstractCegarLoop]: === Iteration 571 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:05,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:05,513 INFO L82 PathProgramCache]: Analyzing trace with hash -961176420, now seen corresponding path program 563 times [2020-01-16 19:07:05,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:05,513 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999362346] [2020-01-16 19:07:05,513 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:05,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:06,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:06,037 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999362346] [2020-01-16 19:07:06,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:06,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:06,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843865235] [2020-01-16 19:07:06,037 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:06,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:06,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:06,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:06,038 INFO L87 Difference]: Start difference. First operand 1571 states and 7029 transitions. Second operand 11 states. [2020-01-16 19:07:06,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:06,210 INFO L93 Difference]: Finished difference Result 2953 states and 11716 transitions. [2020-01-16 19:07:06,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:06,210 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:06,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:06,217 INFO L225 Difference]: With dead ends: 2953 [2020-01-16 19:07:06,218 INFO L226 Difference]: Without dead ends: 2935 [2020-01-16 19:07:06,218 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:06,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2935 states. [2020-01-16 19:07:06,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2935 to 1578. [2020-01-16 19:07:06,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 19:07:06,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7042 transitions. [2020-01-16 19:07:06,285 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7042 transitions. Word has length 28 [2020-01-16 19:07:06,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:06,285 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7042 transitions. [2020-01-16 19:07:06,285 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:06,285 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7042 transitions. [2020-01-16 19:07:06,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:06,288 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:06,288 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:06,288 INFO L426 AbstractCegarLoop]: === Iteration 572 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:06,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:06,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1532631226, now seen corresponding path program 564 times [2020-01-16 19:07:06,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:06,288 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734552169] [2020-01-16 19:07:06,288 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:06,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:06,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:06,810 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734552169] [2020-01-16 19:07:06,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:06,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:06,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830091348] [2020-01-16 19:07:06,811 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:06,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:06,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:06,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:06,811 INFO L87 Difference]: Start difference. First operand 1578 states and 7042 transitions. Second operand 11 states. [2020-01-16 19:07:06,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:06,986 INFO L93 Difference]: Finished difference Result 2952 states and 11707 transitions. [2020-01-16 19:07:06,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:06,987 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:06,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:06,994 INFO L225 Difference]: With dead ends: 2952 [2020-01-16 19:07:06,995 INFO L226 Difference]: Without dead ends: 2923 [2020-01-16 19:07:06,995 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:07,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2923 states. [2020-01-16 19:07:07,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2923 to 1566. [2020-01-16 19:07:07,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1566 states. [2020-01-16 19:07:07,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 7016 transitions. [2020-01-16 19:07:07,060 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 7016 transitions. Word has length 28 [2020-01-16 19:07:07,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:07,060 INFO L478 AbstractCegarLoop]: Abstraction has 1566 states and 7016 transitions. [2020-01-16 19:07:07,061 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:07,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 7016 transitions. [2020-01-16 19:07:07,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:07,063 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:07,063 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:07,063 INFO L426 AbstractCegarLoop]: === Iteration 573 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:07,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:07,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1128566918, now seen corresponding path program 565 times [2020-01-16 19:07:07,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:07,063 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392620599] [2020-01-16 19:07:07,063 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:07,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:07,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:07,586 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392620599] [2020-01-16 19:07:07,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:07,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:07,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838111594] [2020-01-16 19:07:07,586 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:07,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:07,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:07,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:07,587 INFO L87 Difference]: Start difference. First operand 1566 states and 7016 transitions. Second operand 11 states. [2020-01-16 19:07:07,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:07,761 INFO L93 Difference]: Finished difference Result 2932 states and 11671 transitions. [2020-01-16 19:07:07,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:07,761 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:07,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:07,769 INFO L225 Difference]: With dead ends: 2932 [2020-01-16 19:07:07,769 INFO L226 Difference]: Without dead ends: 2917 [2020-01-16 19:07:07,769 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:07,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2917 states. [2020-01-16 19:07:07,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2917 to 1574. [2020-01-16 19:07:07,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 19:07:07,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7038 transitions. [2020-01-16 19:07:07,835 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7038 transitions. Word has length 28 [2020-01-16 19:07:07,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:07,835 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7038 transitions. [2020-01-16 19:07:07,835 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:07,835 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7038 transitions. [2020-01-16 19:07:07,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:07,838 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:07,838 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:07,838 INFO L426 AbstractCegarLoop]: === Iteration 574 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:07,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:07,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1301814610, now seen corresponding path program 566 times [2020-01-16 19:07:07,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:07,838 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951669557] [2020-01-16 19:07:07,838 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:07,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:08,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:08,360 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951669557] [2020-01-16 19:07:08,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:08,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:08,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681375249] [2020-01-16 19:07:08,361 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:08,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:08,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:08,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:08,361 INFO L87 Difference]: Start difference. First operand 1574 states and 7038 transitions. Second operand 11 states. [2020-01-16 19:07:08,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:08,547 INFO L93 Difference]: Finished difference Result 2931 states and 11665 transitions. [2020-01-16 19:07:08,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:08,548 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:08,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:08,555 INFO L225 Difference]: With dead ends: 2931 [2020-01-16 19:07:08,555 INFO L226 Difference]: Without dead ends: 2913 [2020-01-16 19:07:08,555 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:08,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2913 states. [2020-01-16 19:07:08,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2913 to 1570. [2020-01-16 19:07:08,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 19:07:08,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7027 transitions. [2020-01-16 19:07:08,620 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7027 transitions. Word has length 28 [2020-01-16 19:07:08,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:08,620 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7027 transitions. [2020-01-16 19:07:08,620 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:08,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7027 transitions. [2020-01-16 19:07:08,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:08,622 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:08,623 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:08,623 INFO L426 AbstractCegarLoop]: === Iteration 575 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:08,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:08,623 INFO L82 PathProgramCache]: Analyzing trace with hash 55481538, now seen corresponding path program 567 times [2020-01-16 19:07:08,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:08,623 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146365003] [2020-01-16 19:07:08,623 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:08,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:09,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:09,142 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146365003] [2020-01-16 19:07:09,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:09,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:09,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797947711] [2020-01-16 19:07:09,142 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:09,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:09,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:09,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:09,143 INFO L87 Difference]: Start difference. First operand 1570 states and 7027 transitions. Second operand 11 states. [2020-01-16 19:07:09,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:09,307 INFO L93 Difference]: Finished difference Result 2936 states and 11676 transitions. [2020-01-16 19:07:09,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:09,308 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:09,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:09,315 INFO L225 Difference]: With dead ends: 2936 [2020-01-16 19:07:09,315 INFO L226 Difference]: Without dead ends: 2921 [2020-01-16 19:07:09,315 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:09,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2020-01-16 19:07:09,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 1575. [2020-01-16 19:07:09,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:07:09,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7036 transitions. [2020-01-16 19:07:09,383 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7036 transitions. Word has length 28 [2020-01-16 19:07:09,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:09,383 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7036 transitions. [2020-01-16 19:07:09,383 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:09,383 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7036 transitions. [2020-01-16 19:07:09,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:09,386 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:09,386 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:09,386 INFO L426 AbstractCegarLoop]: === Iteration 576 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:09,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:09,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1718134226, now seen corresponding path program 568 times [2020-01-16 19:07:09,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:09,386 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850401807] [2020-01-16 19:07:09,386 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:09,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:09,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:09,910 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850401807] [2020-01-16 19:07:09,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:09,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:09,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309160353] [2020-01-16 19:07:09,911 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:09,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:09,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:09,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:09,911 INFO L87 Difference]: Start difference. First operand 1575 states and 7036 transitions. Second operand 11 states. [2020-01-16 19:07:10,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:10,084 INFO L93 Difference]: Finished difference Result 2938 states and 11675 transitions. [2020-01-16 19:07:10,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:10,084 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:10,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:10,091 INFO L225 Difference]: With dead ends: 2938 [2020-01-16 19:07:10,091 INFO L226 Difference]: Without dead ends: 2916 [2020-01-16 19:07:10,092 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:10,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2020-01-16 19:07:10,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 1570. [2020-01-16 19:07:10,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 19:07:10,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7023 transitions. [2020-01-16 19:07:10,159 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7023 transitions. Word has length 28 [2020-01-16 19:07:10,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:10,159 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7023 transitions. [2020-01-16 19:07:10,159 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:10,159 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7023 transitions. [2020-01-16 19:07:10,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:10,161 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:10,161 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:10,162 INFO L426 AbstractCegarLoop]: === Iteration 577 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:10,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:10,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1304440386, now seen corresponding path program 569 times [2020-01-16 19:07:10,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:10,162 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511061765] [2020-01-16 19:07:10,162 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:10,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:10,697 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 19:07:10,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:10,703 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511061765] [2020-01-16 19:07:10,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:10,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:10,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236161007] [2020-01-16 19:07:10,703 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:10,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:10,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:10,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:10,704 INFO L87 Difference]: Start difference. First operand 1570 states and 7023 transitions. Second operand 11 states. [2020-01-16 19:07:10,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:10,881 INFO L93 Difference]: Finished difference Result 2933 states and 11665 transitions. [2020-01-16 19:07:10,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:10,882 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:10,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:10,890 INFO L225 Difference]: With dead ends: 2933 [2020-01-16 19:07:10,890 INFO L226 Difference]: Without dead ends: 2919 [2020-01-16 19:07:10,890 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:10,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2919 states. [2020-01-16 19:07:10,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2919 to 1574. [2020-01-16 19:07:10,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 19:07:10,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7030 transitions. [2020-01-16 19:07:10,956 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7030 transitions. Word has length 28 [2020-01-16 19:07:10,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:10,956 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7030 transitions. [2020-01-16 19:07:10,956 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:10,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7030 transitions. [2020-01-16 19:07:10,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:10,958 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:10,958 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:10,958 INFO L426 AbstractCegarLoop]: === Iteration 578 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:10,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:10,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1501121914, now seen corresponding path program 570 times [2020-01-16 19:07:10,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:10,959 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277521946] [2020-01-16 19:07:10,959 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:10,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:11,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:11,475 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277521946] [2020-01-16 19:07:11,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:11,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:11,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505638592] [2020-01-16 19:07:11,476 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:11,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:11,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:11,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:11,476 INFO L87 Difference]: Start difference. First operand 1574 states and 7030 transitions. Second operand 11 states. [2020-01-16 19:07:11,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:11,666 INFO L93 Difference]: Finished difference Result 2936 states and 11667 transitions. [2020-01-16 19:07:11,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:11,667 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:11,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:11,674 INFO L225 Difference]: With dead ends: 2936 [2020-01-16 19:07:11,674 INFO L226 Difference]: Without dead ends: 2911 [2020-01-16 19:07:11,675 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:11,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2020-01-16 19:07:11,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 1566. [2020-01-16 19:07:11,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1566 states. [2020-01-16 19:07:11,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 7012 transitions. [2020-01-16 19:07:11,741 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 7012 transitions. Word has length 28 [2020-01-16 19:07:11,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:11,742 INFO L478 AbstractCegarLoop]: Abstraction has 1566 states and 7012 transitions. [2020-01-16 19:07:11,742 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:11,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 7012 transitions. [2020-01-16 19:07:11,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:11,744 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:11,744 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:11,744 INFO L426 AbstractCegarLoop]: === Iteration 579 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:11,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:11,744 INFO L82 PathProgramCache]: Analyzing trace with hash -900783572, now seen corresponding path program 571 times [2020-01-16 19:07:11,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:11,745 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084497352] [2020-01-16 19:07:11,745 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:11,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:12,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:12,257 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084497352] [2020-01-16 19:07:12,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:12,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:12,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377545716] [2020-01-16 19:07:12,258 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:12,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:12,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:12,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:12,258 INFO L87 Difference]: Start difference. First operand 1566 states and 7012 transitions. Second operand 11 states. [2020-01-16 19:07:12,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:12,436 INFO L93 Difference]: Finished difference Result 2943 states and 11691 transitions. [2020-01-16 19:07:12,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:12,436 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:12,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:12,444 INFO L225 Difference]: With dead ends: 2943 [2020-01-16 19:07:12,444 INFO L226 Difference]: Without dead ends: 2925 [2020-01-16 19:07:12,444 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:12,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2925 states. [2020-01-16 19:07:12,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2925 to 1574. [2020-01-16 19:07:12,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 19:07:12,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7034 transitions. [2020-01-16 19:07:12,510 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7034 transitions. Word has length 28 [2020-01-16 19:07:12,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:12,510 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7034 transitions. [2020-01-16 19:07:12,510 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:12,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7034 transitions. [2020-01-16 19:07:12,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:12,512 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:12,512 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:12,513 INFO L426 AbstractCegarLoop]: === Iteration 580 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:12,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:12,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1333323922, now seen corresponding path program 572 times [2020-01-16 19:07:12,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:12,513 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983304179] [2020-01-16 19:07:12,513 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:12,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:13,026 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 19:07:13,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:13,033 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983304179] [2020-01-16 19:07:13,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:13,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:13,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910373501] [2020-01-16 19:07:13,033 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:13,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:13,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:13,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:13,034 INFO L87 Difference]: Start difference. First operand 1574 states and 7034 transitions. Second operand 11 states. [2020-01-16 19:07:13,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:13,213 INFO L93 Difference]: Finished difference Result 2939 states and 11679 transitions. [2020-01-16 19:07:13,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:13,213 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:13,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:13,220 INFO L225 Difference]: With dead ends: 2939 [2020-01-16 19:07:13,220 INFO L226 Difference]: Without dead ends: 2921 [2020-01-16 19:07:13,221 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:13,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2020-01-16 19:07:13,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 1570. [2020-01-16 19:07:13,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 19:07:13,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7023 transitions. [2020-01-16 19:07:13,286 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7023 transitions. Word has length 28 [2020-01-16 19:07:13,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:13,286 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7023 transitions. [2020-01-16 19:07:13,286 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:13,286 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7023 transitions. [2020-01-16 19:07:13,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:13,289 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:13,289 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:13,289 INFO L426 AbstractCegarLoop]: === Iteration 581 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:13,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:13,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1973868952, now seen corresponding path program 573 times [2020-01-16 19:07:13,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:13,289 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955688829] [2020-01-16 19:07:13,289 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:13,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:13,818 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 19:07:13,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:13,824 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955688829] [2020-01-16 19:07:13,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:13,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:13,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248882342] [2020-01-16 19:07:13,824 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:13,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:13,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:13,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:13,825 INFO L87 Difference]: Start difference. First operand 1570 states and 7023 transitions. Second operand 11 states. [2020-01-16 19:07:14,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:14,005 INFO L93 Difference]: Finished difference Result 2949 states and 11702 transitions. [2020-01-16 19:07:14,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:14,006 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:14,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:14,013 INFO L225 Difference]: With dead ends: 2949 [2020-01-16 19:07:14,013 INFO L226 Difference]: Without dead ends: 2931 [2020-01-16 19:07:14,014 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:14,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2931 states. [2020-01-16 19:07:14,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2931 to 1577. [2020-01-16 19:07:14,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 19:07:14,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7036 transitions. [2020-01-16 19:07:14,081 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7036 transitions. Word has length 28 [2020-01-16 19:07:14,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:14,081 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7036 transitions. [2020-01-16 19:07:14,081 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:14,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7036 transitions. [2020-01-16 19:07:14,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:14,084 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:14,084 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:14,084 INFO L426 AbstractCegarLoop]: === Iteration 582 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:14,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:14,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1749643538, now seen corresponding path program 574 times [2020-01-16 19:07:14,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:14,084 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079175060] [2020-01-16 19:07:14,084 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:14,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:14,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:14,606 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079175060] [2020-01-16 19:07:14,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:14,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:14,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228843506] [2020-01-16 19:07:14,606 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:14,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:14,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:14,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:14,606 INFO L87 Difference]: Start difference. First operand 1577 states and 7036 transitions. Second operand 11 states. [2020-01-16 19:07:14,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:14,785 INFO L93 Difference]: Finished difference Result 2948 states and 11693 transitions. [2020-01-16 19:07:14,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:14,786 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:14,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:14,792 INFO L225 Difference]: With dead ends: 2948 [2020-01-16 19:07:14,793 INFO L226 Difference]: Without dead ends: 2924 [2020-01-16 19:07:14,793 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:14,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2924 states. [2020-01-16 19:07:14,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2924 to 1570. [2020-01-16 19:07:14,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 19:07:14,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7019 transitions. [2020-01-16 19:07:14,858 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7019 transitions. Word has length 28 [2020-01-16 19:07:14,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:14,858 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7019 transitions. [2020-01-16 19:07:14,858 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:14,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7019 transitions. [2020-01-16 19:07:14,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:14,861 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:14,861 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:14,861 INFO L426 AbstractCegarLoop]: === Iteration 583 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:14,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:14,861 INFO L82 PathProgramCache]: Analyzing trace with hash 798094120, now seen corresponding path program 575 times [2020-01-16 19:07:14,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:14,861 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995969045] [2020-01-16 19:07:14,861 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:14,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:15,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:15,392 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995969045] [2020-01-16 19:07:15,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:15,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:15,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020575526] [2020-01-16 19:07:15,392 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:15,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:15,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:15,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:15,393 INFO L87 Difference]: Start difference. First operand 1570 states and 7019 transitions. Second operand 11 states. [2020-01-16 19:07:15,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:15,604 INFO L93 Difference]: Finished difference Result 2938 states and 11673 transitions. [2020-01-16 19:07:15,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:15,605 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:15,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:15,612 INFO L225 Difference]: With dead ends: 2938 [2020-01-16 19:07:15,613 INFO L226 Difference]: Without dead ends: 2924 [2020-01-16 19:07:15,613 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:15,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2924 states. [2020-01-16 19:07:15,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2924 to 1574. [2020-01-16 19:07:15,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 19:07:15,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7026 transitions. [2020-01-16 19:07:15,679 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7026 transitions. Word has length 28 [2020-01-16 19:07:15,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:15,679 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7026 transitions. [2020-01-16 19:07:15,679 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:15,679 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7026 transitions. [2020-01-16 19:07:15,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:15,681 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:15,681 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:15,681 INFO L426 AbstractCegarLoop]: === Iteration 584 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:15,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:15,681 INFO L82 PathProgramCache]: Analyzing trace with hash -2007468180, now seen corresponding path program 576 times [2020-01-16 19:07:15,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:15,682 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578399300] [2020-01-16 19:07:15,682 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:15,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:16,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:16,203 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578399300] [2020-01-16 19:07:16,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:16,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:16,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139330161] [2020-01-16 19:07:16,204 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:16,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:16,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:16,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:16,204 INFO L87 Difference]: Start difference. First operand 1574 states and 7026 transitions. Second operand 11 states. [2020-01-16 19:07:16,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:16,417 INFO L93 Difference]: Finished difference Result 2941 states and 11675 transitions. [2020-01-16 19:07:16,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:16,417 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:16,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:16,444 INFO L225 Difference]: With dead ends: 2941 [2020-01-16 19:07:16,445 INFO L226 Difference]: Without dead ends: 2912 [2020-01-16 19:07:16,445 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:16,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2912 states. [2020-01-16 19:07:16,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2912 to 1562. [2020-01-16 19:07:16,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1562 states. [2020-01-16 19:07:16,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1562 states to 1562 states and 7001 transitions. [2020-01-16 19:07:16,510 INFO L78 Accepts]: Start accepts. Automaton has 1562 states and 7001 transitions. Word has length 28 [2020-01-16 19:07:16,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:16,510 INFO L478 AbstractCegarLoop]: Abstraction has 1562 states and 7001 transitions. [2020-01-16 19:07:16,510 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:16,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1562 states and 7001 transitions. [2020-01-16 19:07:16,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:16,512 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:16,512 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:16,512 INFO L426 AbstractCegarLoop]: === Iteration 585 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:16,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:16,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1070478082, now seen corresponding path program 577 times [2020-01-16 19:07:16,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:16,513 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896810823] [2020-01-16 19:07:16,513 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:16,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:17,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:17,051 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896810823] [2020-01-16 19:07:17,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:17,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:17,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250015025] [2020-01-16 19:07:17,051 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:17,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:17,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:17,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:17,052 INFO L87 Difference]: Start difference. First operand 1562 states and 7001 transitions. Second operand 11 states. [2020-01-16 19:07:17,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:17,244 INFO L93 Difference]: Finished difference Result 2991 states and 11808 transitions. [2020-01-16 19:07:17,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:17,245 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:17,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:17,252 INFO L225 Difference]: With dead ends: 2991 [2020-01-16 19:07:17,252 INFO L226 Difference]: Without dead ends: 2971 [2020-01-16 19:07:17,252 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:17,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2971 states. [2020-01-16 19:07:17,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2971 to 1585. [2020-01-16 19:07:17,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 19:07:17,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7066 transitions. [2020-01-16 19:07:17,320 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7066 transitions. Word has length 28 [2020-01-16 19:07:17,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:17,320 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7066 transitions. [2020-01-16 19:07:17,320 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:17,320 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7066 transitions. [2020-01-16 19:07:17,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:17,322 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:17,322 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:17,322 INFO L426 AbstractCegarLoop]: === Iteration 586 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:17,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:17,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1815180580, now seen corresponding path program 578 times [2020-01-16 19:07:17,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:17,323 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976753916] [2020-01-16 19:07:17,323 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:17,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:17,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:17,852 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976753916] [2020-01-16 19:07:17,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:17,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:17,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243890932] [2020-01-16 19:07:17,853 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:17,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:17,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:17,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:17,853 INFO L87 Difference]: Start difference. First operand 1585 states and 7066 transitions. Second operand 11 states. [2020-01-16 19:07:18,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:18,031 INFO L93 Difference]: Finished difference Result 2989 states and 11796 transitions. [2020-01-16 19:07:18,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:18,032 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:18,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:18,039 INFO L225 Difference]: With dead ends: 2989 [2020-01-16 19:07:18,039 INFO L226 Difference]: Without dead ends: 2961 [2020-01-16 19:07:18,040 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:18,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2020-01-16 19:07:18,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 1575. [2020-01-16 19:07:18,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:07:18,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7043 transitions. [2020-01-16 19:07:18,106 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7043 transitions. Word has length 28 [2020-01-16 19:07:18,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:18,106 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7043 transitions. [2020-01-16 19:07:18,106 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:18,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7043 transitions. [2020-01-16 19:07:18,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:18,108 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:18,108 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:18,108 INFO L426 AbstractCegarLoop]: === Iteration 587 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:18,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:18,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1608333660, now seen corresponding path program 579 times [2020-01-16 19:07:18,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:18,109 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19345481] [2020-01-16 19:07:18,109 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:18,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:18,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:18,642 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19345481] [2020-01-16 19:07:18,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:18,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:18,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443226051] [2020-01-16 19:07:18,642 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:18,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:18,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:18,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:18,643 INFO L87 Difference]: Start difference. First operand 1575 states and 7043 transitions. Second operand 11 states. [2020-01-16 19:07:18,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:18,780 INFO L93 Difference]: Finished difference Result 2982 states and 11781 transitions. [2020-01-16 19:07:18,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:18,781 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:18,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:18,789 INFO L225 Difference]: With dead ends: 2982 [2020-01-16 19:07:18,789 INFO L226 Difference]: Without dead ends: 2962 [2020-01-16 19:07:18,789 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:18,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2962 states. [2020-01-16 19:07:18,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2962 to 1580. [2020-01-16 19:07:18,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 19:07:18,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7051 transitions. [2020-01-16 19:07:18,854 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7051 transitions. Word has length 28 [2020-01-16 19:07:18,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:18,854 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7051 transitions. [2020-01-16 19:07:18,854 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:18,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7051 transitions. [2020-01-16 19:07:18,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:18,856 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:18,856 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:18,856 INFO L426 AbstractCegarLoop]: === Iteration 588 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:18,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:18,857 INFO L82 PathProgramCache]: Analyzing trace with hash 292176356, now seen corresponding path program 580 times [2020-01-16 19:07:18,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:18,857 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594125919] [2020-01-16 19:07:18,857 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:18,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:19,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:19,376 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594125919] [2020-01-16 19:07:19,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:19,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:19,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195330291] [2020-01-16 19:07:19,376 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:19,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:19,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:19,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:19,377 INFO L87 Difference]: Start difference. First operand 1580 states and 7051 transitions. Second operand 11 states. [2020-01-16 19:07:19,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:19,584 INFO L93 Difference]: Finished difference Result 2976 states and 11765 transitions. [2020-01-16 19:07:19,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:19,584 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:19,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:19,591 INFO L225 Difference]: With dead ends: 2976 [2020-01-16 19:07:19,591 INFO L226 Difference]: Without dead ends: 2957 [2020-01-16 19:07:19,591 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:19,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2957 states. [2020-01-16 19:07:19,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2957 to 1575. [2020-01-16 19:07:19,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:07:19,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7038 transitions. [2020-01-16 19:07:19,656 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7038 transitions. Word has length 28 [2020-01-16 19:07:19,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:19,656 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7038 transitions. [2020-01-16 19:07:19,656 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:19,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7038 transitions. [2020-01-16 19:07:19,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:19,658 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:19,658 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:19,659 INFO L426 AbstractCegarLoop]: === Iteration 589 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:19,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:19,659 INFO L82 PathProgramCache]: Analyzing trace with hash -330990180, now seen corresponding path program 581 times [2020-01-16 19:07:19,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:19,659 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965243507] [2020-01-16 19:07:19,659 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:19,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:20,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:20,178 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965243507] [2020-01-16 19:07:20,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:20,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:20,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909537327] [2020-01-16 19:07:20,178 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:20,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:20,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:20,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:20,179 INFO L87 Difference]: Start difference. First operand 1575 states and 7038 transitions. Second operand 11 states. [2020-01-16 19:07:20,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:20,360 INFO L93 Difference]: Finished difference Result 2977 states and 11768 transitions. [2020-01-16 19:07:20,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:20,361 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:20,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:20,368 INFO L225 Difference]: With dead ends: 2977 [2020-01-16 19:07:20,368 INFO L226 Difference]: Without dead ends: 2959 [2020-01-16 19:07:20,368 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:20,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2959 states. [2020-01-16 19:07:20,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2959 to 1579. [2020-01-16 19:07:20,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 19:07:20,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7045 transitions. [2020-01-16 19:07:20,435 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7045 transitions. Word has length 28 [2020-01-16 19:07:20,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:20,435 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7045 transitions. [2020-01-16 19:07:20,435 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:20,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7045 transitions. [2020-01-16 19:07:20,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:20,437 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:20,437 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:20,437 INFO L426 AbstractCegarLoop]: === Iteration 590 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:20,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:20,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1903117314, now seen corresponding path program 582 times [2020-01-16 19:07:20,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:20,438 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391778537] [2020-01-16 19:07:20,438 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:20,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:20,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:20,956 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391778537] [2020-01-16 19:07:20,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:20,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:20,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943548661] [2020-01-16 19:07:20,957 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:20,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:20,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:20,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:20,957 INFO L87 Difference]: Start difference. First operand 1579 states and 7045 transitions. Second operand 11 states. [2020-01-16 19:07:21,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:21,155 INFO L93 Difference]: Finished difference Result 2973 states and 11756 transitions. [2020-01-16 19:07:21,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:21,155 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:21,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:21,162 INFO L225 Difference]: With dead ends: 2973 [2020-01-16 19:07:21,162 INFO L226 Difference]: Without dead ends: 2949 [2020-01-16 19:07:21,163 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:21,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2949 states. [2020-01-16 19:07:21,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2949 to 1569. [2020-01-16 19:07:21,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 19:07:21,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7023 transitions. [2020-01-16 19:07:21,230 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7023 transitions. Word has length 28 [2020-01-16 19:07:21,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:21,230 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7023 transitions. [2020-01-16 19:07:21,230 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:21,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7023 transitions. [2020-01-16 19:07:21,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:21,232 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:21,232 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:21,232 INFO L426 AbstractCegarLoop]: === Iteration 591 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:21,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:21,232 INFO L82 PathProgramCache]: Analyzing trace with hash -2130397626, now seen corresponding path program 583 times [2020-01-16 19:07:21,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:21,233 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948859713] [2020-01-16 19:07:21,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:21,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:21,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:21,785 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948859713] [2020-01-16 19:07:21,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:21,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:21,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456548390] [2020-01-16 19:07:21,785 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:21,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:21,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:21,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:21,785 INFO L87 Difference]: Start difference. First operand 1569 states and 7023 transitions. Second operand 11 states. [2020-01-16 19:07:21,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:21,925 INFO L93 Difference]: Finished difference Result 3004 states and 11839 transitions. [2020-01-16 19:07:21,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:21,925 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:21,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:21,932 INFO L225 Difference]: With dead ends: 3004 [2020-01-16 19:07:21,932 INFO L226 Difference]: Without dead ends: 2984 [2020-01-16 19:07:21,932 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:21,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2984 states. [2020-01-16 19:07:21,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2984 to 1589. [2020-01-16 19:07:21,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1589 states. [2020-01-16 19:07:21,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 7073 transitions. [2020-01-16 19:07:21,998 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 7073 transitions. Word has length 28 [2020-01-16 19:07:21,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:21,999 INFO L478 AbstractCegarLoop]: Abstraction has 1589 states and 7073 transitions. [2020-01-16 19:07:21,999 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:21,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 7073 transitions. [2020-01-16 19:07:22,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:22,001 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:22,001 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:22,001 INFO L426 AbstractCegarLoop]: === Iteration 592 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:22,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:22,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1385695128, now seen corresponding path program 584 times [2020-01-16 19:07:22,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:22,001 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882052134] [2020-01-16 19:07:22,001 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:22,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:22,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:22,571 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882052134] [2020-01-16 19:07:22,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:22,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:22,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317594455] [2020-01-16 19:07:22,572 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:22,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:22,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:22,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:22,572 INFO L87 Difference]: Start difference. First operand 1589 states and 7073 transitions. Second operand 11 states. [2020-01-16 19:07:22,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:22,778 INFO L93 Difference]: Finished difference Result 3002 states and 11827 transitions. [2020-01-16 19:07:22,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:22,778 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:22,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:22,786 INFO L225 Difference]: With dead ends: 3002 [2020-01-16 19:07:22,786 INFO L226 Difference]: Without dead ends: 2974 [2020-01-16 19:07:22,786 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:22,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2974 states. [2020-01-16 19:07:22,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2974 to 1579. [2020-01-16 19:07:22,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 19:07:22,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7047 transitions. [2020-01-16 19:07:22,853 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7047 transitions. Word has length 28 [2020-01-16 19:07:22,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:22,853 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7047 transitions. [2020-01-16 19:07:22,853 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:22,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7047 transitions. [2020-01-16 19:07:22,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:22,856 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:22,856 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:22,856 INFO L426 AbstractCegarLoop]: === Iteration 593 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:22,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:22,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1629339868, now seen corresponding path program 585 times [2020-01-16 19:07:22,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:22,856 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457126501] [2020-01-16 19:07:22,856 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:22,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:23,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:23,403 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457126501] [2020-01-16 19:07:23,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:23,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:23,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542947023] [2020-01-16 19:07:23,403 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:23,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:23,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:23,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:23,404 INFO L87 Difference]: Start difference. First operand 1579 states and 7047 transitions. Second operand 11 states. [2020-01-16 19:07:23,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:23,543 INFO L93 Difference]: Finished difference Result 3001 states and 11824 transitions. [2020-01-16 19:07:23,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:23,543 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:23,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:23,551 INFO L225 Difference]: With dead ends: 3001 [2020-01-16 19:07:23,551 INFO L226 Difference]: Without dead ends: 2981 [2020-01-16 19:07:23,551 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:23,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2981 states. [2020-01-16 19:07:23,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2981 to 1587. [2020-01-16 19:07:23,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1587 states. [2020-01-16 19:07:23,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 7061 transitions. [2020-01-16 19:07:23,617 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 7061 transitions. Word has length 28 [2020-01-16 19:07:23,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:23,617 INFO L478 AbstractCegarLoop]: Abstraction has 1587 states and 7061 transitions. [2020-01-16 19:07:23,617 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:23,617 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 7061 transitions. [2020-01-16 19:07:23,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:23,620 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:23,620 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:23,620 INFO L426 AbstractCegarLoop]: === Iteration 594 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:23,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:23,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1802587560, now seen corresponding path program 586 times [2020-01-16 19:07:23,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:23,620 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330689864] [2020-01-16 19:07:23,620 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:23,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:24,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:24,153 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330689864] [2020-01-16 19:07:24,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:24,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:24,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458978260] [2020-01-16 19:07:24,154 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:24,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:24,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:24,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:24,154 INFO L87 Difference]: Start difference. First operand 1587 states and 7061 transitions. Second operand 11 states. [2020-01-16 19:07:24,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:24,329 INFO L93 Difference]: Finished difference Result 2998 states and 11811 transitions. [2020-01-16 19:07:24,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:24,329 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:24,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:24,337 INFO L225 Difference]: With dead ends: 2998 [2020-01-16 19:07:24,337 INFO L226 Difference]: Without dead ends: 2973 [2020-01-16 19:07:24,337 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:24,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2973 states. [2020-01-16 19:07:24,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2973 to 1579. [2020-01-16 19:07:24,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 19:07:24,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7039 transitions. [2020-01-16 19:07:24,405 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7039 transitions. Word has length 28 [2020-01-16 19:07:24,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:24,405 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7039 transitions. [2020-01-16 19:07:24,405 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:24,405 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7039 transitions. [2020-01-16 19:07:24,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:24,407 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:24,407 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:24,407 INFO L426 AbstractCegarLoop]: === Iteration 595 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:24,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:24,407 INFO L82 PathProgramCache]: Analyzing trace with hash -309983972, now seen corresponding path program 587 times [2020-01-16 19:07:24,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:24,408 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189081795] [2020-01-16 19:07:24,408 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:24,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:24,940 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 19:07:24,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:24,947 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189081795] [2020-01-16 19:07:24,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:24,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:24,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863121187] [2020-01-16 19:07:24,947 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:24,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:24,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:24,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:24,947 INFO L87 Difference]: Start difference. First operand 1579 states and 7039 transitions. Second operand 11 states. [2020-01-16 19:07:25,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:25,172 INFO L93 Difference]: Finished difference Result 2996 states and 11808 transitions. [2020-01-16 19:07:25,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:25,173 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:25,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:25,180 INFO L225 Difference]: With dead ends: 2996 [2020-01-16 19:07:25,180 INFO L226 Difference]: Without dead ends: 2978 [2020-01-16 19:07:25,180 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:25,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2978 states. [2020-01-16 19:07:25,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2978 to 1586. [2020-01-16 19:07:25,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1586 states. [2020-01-16 19:07:25,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 7052 transitions. [2020-01-16 19:07:25,246 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 7052 transitions. Word has length 28 [2020-01-16 19:07:25,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:25,246 INFO L478 AbstractCegarLoop]: Abstraction has 1586 states and 7052 transitions. [2020-01-16 19:07:25,246 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:25,246 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 7052 transitions. [2020-01-16 19:07:25,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:25,249 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:25,249 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:25,249 INFO L426 AbstractCegarLoop]: === Iteration 596 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:25,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:25,249 INFO L82 PathProgramCache]: Analyzing trace with hash -881438778, now seen corresponding path program 588 times [2020-01-16 19:07:25,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:25,249 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050917492] [2020-01-16 19:07:25,249 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:25,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:25,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:25,778 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050917492] [2020-01-16 19:07:25,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:25,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:25,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085974954] [2020-01-16 19:07:25,779 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:25,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:25,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:25,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:25,779 INFO L87 Difference]: Start difference. First operand 1586 states and 7052 transitions. Second operand 11 states. [2020-01-16 19:07:25,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:25,955 INFO L93 Difference]: Finished difference Result 2995 states and 11799 transitions. [2020-01-16 19:07:25,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:25,955 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:25,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:25,963 INFO L225 Difference]: With dead ends: 2995 [2020-01-16 19:07:25,963 INFO L226 Difference]: Without dead ends: 2961 [2020-01-16 19:07:25,963 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:26,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2020-01-16 19:07:26,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 1569. [2020-01-16 19:07:26,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 19:07:26,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7016 transitions. [2020-01-16 19:07:26,029 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7016 transitions. Word has length 28 [2020-01-16 19:07:26,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:26,029 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7016 transitions. [2020-01-16 19:07:26,029 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:26,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7016 transitions. [2020-01-16 19:07:26,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:26,032 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:26,032 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:26,032 INFO L426 AbstractCegarLoop]: === Iteration 597 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:26,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:26,032 INFO L82 PathProgramCache]: Analyzing trace with hash -2098888314, now seen corresponding path program 589 times [2020-01-16 19:07:26,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:26,032 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809501862] [2020-01-16 19:07:26,032 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:26,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:26,565 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 19:07:26,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:26,572 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809501862] [2020-01-16 19:07:26,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:26,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:26,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235953025] [2020-01-16 19:07:26,572 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:26,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:26,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:26,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:26,572 INFO L87 Difference]: Start difference. First operand 1569 states and 7016 transitions. Second operand 11 states. [2020-01-16 19:07:26,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:26,712 INFO L93 Difference]: Finished difference Result 2978 states and 11766 transitions. [2020-01-16 19:07:26,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:26,712 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:26,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:26,720 INFO L225 Difference]: With dead ends: 2978 [2020-01-16 19:07:26,720 INFO L226 Difference]: Without dead ends: 2958 [2020-01-16 19:07:26,720 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:26,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2958 states. [2020-01-16 19:07:26,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2958 to 1579. [2020-01-16 19:07:26,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 19:07:26,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7042 transitions. [2020-01-16 19:07:26,788 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7042 transitions. Word has length 28 [2020-01-16 19:07:26,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:26,788 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7042 transitions. [2020-01-16 19:07:26,788 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:26,789 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7042 transitions. [2020-01-16 19:07:26,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:26,791 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:26,791 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:26,791 INFO L426 AbstractCegarLoop]: === Iteration 598 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:26,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:26,791 INFO L82 PathProgramCache]: Analyzing trace with hash 879921678, now seen corresponding path program 590 times [2020-01-16 19:07:26,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:26,791 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242472245] [2020-01-16 19:07:26,791 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:26,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:27,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:27,301 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242472245] [2020-01-16 19:07:27,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:27,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:27,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156840502] [2020-01-16 19:07:27,301 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:27,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:27,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:27,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:27,302 INFO L87 Difference]: Start difference. First operand 1579 states and 7042 transitions. Second operand 11 states. [2020-01-16 19:07:27,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:27,479 INFO L93 Difference]: Finished difference Result 2972 states and 11750 transitions. [2020-01-16 19:07:27,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:27,480 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:27,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:27,488 INFO L225 Difference]: With dead ends: 2972 [2020-01-16 19:07:27,488 INFO L226 Difference]: Without dead ends: 2953 [2020-01-16 19:07:27,488 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:27,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2953 states. [2020-01-16 19:07:27,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2953 to 1574. [2020-01-16 19:07:27,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 19:07:27,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7029 transitions. [2020-01-16 19:07:27,567 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7029 transitions. Word has length 28 [2020-01-16 19:07:27,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:27,568 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7029 transitions. [2020-01-16 19:07:27,568 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:27,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7029 transitions. [2020-01-16 19:07:27,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:27,570 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:27,570 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:27,570 INFO L426 AbstractCegarLoop]: === Iteration 599 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:27,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:27,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1122993602, now seen corresponding path program 591 times [2020-01-16 19:07:27,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:27,571 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988232518] [2020-01-16 19:07:27,571 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:27,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:28,015 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-01-16 19:07:28,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:28,137 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988232518] [2020-01-16 19:07:28,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:28,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:28,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503722328] [2020-01-16 19:07:28,138 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:28,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:28,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:28,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:28,138 INFO L87 Difference]: Start difference. First operand 1574 states and 7029 transitions. Second operand 11 states. [2020-01-16 19:07:28,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:28,304 INFO L93 Difference]: Finished difference Result 2984 states and 11776 transitions. [2020-01-16 19:07:28,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:28,304 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:28,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:28,312 INFO L225 Difference]: With dead ends: 2984 [2020-01-16 19:07:28,312 INFO L226 Difference]: Without dead ends: 2964 [2020-01-16 19:07:28,314 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:28,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2964 states. [2020-01-16 19:07:28,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2964 to 1582. [2020-01-16 19:07:28,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 19:07:28,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7043 transitions. [2020-01-16 19:07:28,381 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7043 transitions. Word has length 28 [2020-01-16 19:07:28,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:28,381 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7043 transitions. [2020-01-16 19:07:28,381 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:28,381 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7043 transitions. [2020-01-16 19:07:28,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:28,383 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:28,384 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:28,384 INFO L426 AbstractCegarLoop]: === Iteration 600 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:28,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:28,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1296241294, now seen corresponding path program 592 times [2020-01-16 19:07:28,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:28,384 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480416092] [2020-01-16 19:07:28,384 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:28,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:28,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:28,903 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480416092] [2020-01-16 19:07:28,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:28,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:28,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598632235] [2020-01-16 19:07:28,903 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:28,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:28,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:28,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:28,904 INFO L87 Difference]: Start difference. First operand 1582 states and 7043 transitions. Second operand 11 states. [2020-01-16 19:07:29,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:29,099 INFO L93 Difference]: Finished difference Result 2981 states and 11763 transitions. [2020-01-16 19:07:29,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:29,100 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:29,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:29,107 INFO L225 Difference]: With dead ends: 2981 [2020-01-16 19:07:29,108 INFO L226 Difference]: Without dead ends: 2956 [2020-01-16 19:07:29,108 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:29,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2020-01-16 19:07:29,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 1574. [2020-01-16 19:07:29,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 19:07:29,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7024 transitions. [2020-01-16 19:07:29,175 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7024 transitions. Word has length 28 [2020-01-16 19:07:29,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:29,175 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7024 transitions. [2020-01-16 19:07:29,176 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:29,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7024 transitions. [2020-01-16 19:07:29,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:29,178 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:29,178 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:29,178 INFO L426 AbstractCegarLoop]: === Iteration 601 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:29,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:29,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1955632834, now seen corresponding path program 593 times [2020-01-16 19:07:29,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:29,178 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326116174] [2020-01-16 19:07:29,178 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:29,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:29,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:29,690 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326116174] [2020-01-16 19:07:29,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:29,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:29,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800241227] [2020-01-16 19:07:29,690 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:29,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:29,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:29,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:29,691 INFO L87 Difference]: Start difference. First operand 1574 states and 7024 transitions. Second operand 11 states. [2020-01-16 19:07:29,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:29,942 INFO L93 Difference]: Finished difference Result 2968 states and 11738 transitions. [2020-01-16 19:07:29,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:29,943 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:29,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:29,950 INFO L225 Difference]: With dead ends: 2968 [2020-01-16 19:07:29,950 INFO L226 Difference]: Without dead ends: 2954 [2020-01-16 19:07:29,950 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:29,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2020-01-16 19:07:30,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 1578. [2020-01-16 19:07:30,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 19:07:30,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7031 transitions. [2020-01-16 19:07:30,018 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7031 transitions. Word has length 28 [2020-01-16 19:07:30,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:30,018 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7031 transitions. [2020-01-16 19:07:30,018 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:30,018 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7031 transitions. [2020-01-16 19:07:30,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:30,020 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:30,020 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:30,020 INFO L426 AbstractCegarLoop]: === Iteration 602 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:30,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:30,021 INFO L82 PathProgramCache]: Analyzing trace with hash -849929466, now seen corresponding path program 594 times [2020-01-16 19:07:30,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:30,021 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306078495] [2020-01-16 19:07:30,021 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:30,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:30,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:30,545 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306078495] [2020-01-16 19:07:30,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:30,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:30,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694364562] [2020-01-16 19:07:30,546 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:30,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:30,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:30,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:30,546 INFO L87 Difference]: Start difference. First operand 1578 states and 7031 transitions. Second operand 11 states. [2020-01-16 19:07:30,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:30,739 INFO L93 Difference]: Finished difference Result 2971 states and 11740 transitions. [2020-01-16 19:07:30,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:30,740 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:30,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:30,747 INFO L225 Difference]: With dead ends: 2971 [2020-01-16 19:07:30,748 INFO L226 Difference]: Without dead ends: 2945 [2020-01-16 19:07:30,748 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:30,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2945 states. [2020-01-16 19:07:30,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2945 to 1569. [2020-01-16 19:07:30,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 19:07:30,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7011 transitions. [2020-01-16 19:07:30,813 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7011 transitions. Word has length 28 [2020-01-16 19:07:30,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:30,814 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7011 transitions. [2020-01-16 19:07:30,814 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:30,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7011 transitions. [2020-01-16 19:07:30,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:30,816 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:30,816 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:30,816 INFO L426 AbstractCegarLoop]: === Iteration 603 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:30,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:30,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1343682712, now seen corresponding path program 595 times [2020-01-16 19:07:30,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:30,816 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908544106] [2020-01-16 19:07:30,817 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:30,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:31,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:31,332 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908544106] [2020-01-16 19:07:31,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:31,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:31,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062121139] [2020-01-16 19:07:31,333 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:31,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:31,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:31,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:31,333 INFO L87 Difference]: Start difference. First operand 1569 states and 7011 transitions. Second operand 11 states. [2020-01-16 19:07:31,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:31,546 INFO L93 Difference]: Finished difference Result 2968 states and 11743 transitions. [2020-01-16 19:07:31,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:31,546 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:31,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:31,554 INFO L225 Difference]: With dead ends: 2968 [2020-01-16 19:07:31,554 INFO L226 Difference]: Without dead ends: 2950 [2020-01-16 19:07:31,555 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:31,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2020-01-16 19:07:31,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 1577. [2020-01-16 19:07:31,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 19:07:31,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7033 transitions. [2020-01-16 19:07:31,625 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7033 transitions. Word has length 28 [2020-01-16 19:07:31,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:31,625 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7033 transitions. [2020-01-16 19:07:31,625 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:31,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7033 transitions. [2020-01-16 19:07:31,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:31,628 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:31,628 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:31,628 INFO L426 AbstractCegarLoop]: === Iteration 604 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:31,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:31,629 INFO L82 PathProgramCache]: Analyzing trace with hash 890424782, now seen corresponding path program 596 times [2020-01-16 19:07:31,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:31,629 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531195289] [2020-01-16 19:07:31,629 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:31,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:32,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:32,151 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531195289] [2020-01-16 19:07:32,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:32,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:32,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287012260] [2020-01-16 19:07:32,151 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:32,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:32,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:32,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:32,152 INFO L87 Difference]: Start difference. First operand 1577 states and 7033 transitions. Second operand 11 states. [2020-01-16 19:07:32,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:32,344 INFO L93 Difference]: Finished difference Result 2964 states and 11731 transitions. [2020-01-16 19:07:32,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:32,345 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:32,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:32,352 INFO L225 Difference]: With dead ends: 2964 [2020-01-16 19:07:32,352 INFO L226 Difference]: Without dead ends: 2946 [2020-01-16 19:07:32,352 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:32,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2946 states. [2020-01-16 19:07:32,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2946 to 1573. [2020-01-16 19:07:32,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:07:32,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7022 transitions. [2020-01-16 19:07:32,419 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7022 transitions. Word has length 28 [2020-01-16 19:07:32,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:32,419 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7022 transitions. [2020-01-16 19:07:32,419 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:32,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7022 transitions. [2020-01-16 19:07:32,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:32,422 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:32,422 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:32,422 INFO L426 AbstractCegarLoop]: === Iteration 605 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:32,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:32,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1878199204, now seen corresponding path program 597 times [2020-01-16 19:07:32,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:32,422 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524523432] [2020-01-16 19:07:32,422 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:32,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:32,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:32,945 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524523432] [2020-01-16 19:07:32,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:32,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:32,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983256254] [2020-01-16 19:07:32,945 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:32,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:32,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:32,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:32,946 INFO L87 Difference]: Start difference. First operand 1573 states and 7022 transitions. Second operand 11 states. [2020-01-16 19:07:33,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:33,140 INFO L93 Difference]: Finished difference Result 2974 states and 11754 transitions. [2020-01-16 19:07:33,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:33,141 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:33,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:33,148 INFO L225 Difference]: With dead ends: 2974 [2020-01-16 19:07:33,148 INFO L226 Difference]: Without dead ends: 2956 [2020-01-16 19:07:33,148 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:33,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2020-01-16 19:07:33,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 1580. [2020-01-16 19:07:33,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 19:07:33,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7035 transitions. [2020-01-16 19:07:33,214 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7035 transitions. Word has length 28 [2020-01-16 19:07:33,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:33,214 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7035 transitions. [2020-01-16 19:07:33,215 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:33,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7035 transitions. [2020-01-16 19:07:33,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:33,217 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:33,217 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:33,217 INFO L426 AbstractCegarLoop]: === Iteration 606 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:33,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:33,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1306744398, now seen corresponding path program 598 times [2020-01-16 19:07:33,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:33,217 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270710415] [2020-01-16 19:07:33,217 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:33,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:33,738 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 19:07:33,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:33,745 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270710415] [2020-01-16 19:07:33,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:33,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:33,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813251564] [2020-01-16 19:07:33,745 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:33,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:33,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:33,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:33,745 INFO L87 Difference]: Start difference. First operand 1580 states and 7035 transitions. Second operand 11 states. [2020-01-16 19:07:33,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:33,956 INFO L93 Difference]: Finished difference Result 2973 states and 11745 transitions. [2020-01-16 19:07:33,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:33,957 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:33,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:33,964 INFO L225 Difference]: With dead ends: 2973 [2020-01-16 19:07:33,965 INFO L226 Difference]: Without dead ends: 2949 [2020-01-16 19:07:33,965 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:34,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2949 states. [2020-01-16 19:07:34,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2949 to 1573. [2020-01-16 19:07:34,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:07:34,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7018 transitions. [2020-01-16 19:07:34,031 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7018 transitions. Word has length 28 [2020-01-16 19:07:34,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:34,031 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7018 transitions. [2020-01-16 19:07:34,031 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:34,031 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7018 transitions. [2020-01-16 19:07:34,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:34,034 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:34,034 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:34,034 INFO L426 AbstractCegarLoop]: === Iteration 607 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:34,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:34,034 INFO L82 PathProgramCache]: Analyzing trace with hash 355194980, now seen corresponding path program 599 times [2020-01-16 19:07:34,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:34,034 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635227745] [2020-01-16 19:07:34,034 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:34,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:34,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:34,557 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635227745] [2020-01-16 19:07:34,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:34,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:34,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789433509] [2020-01-16 19:07:34,557 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:34,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:34,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:34,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:34,558 INFO L87 Difference]: Start difference. First operand 1573 states and 7018 transitions. Second operand 11 states. [2020-01-16 19:07:34,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:34,746 INFO L93 Difference]: Finished difference Result 2963 states and 11725 transitions. [2020-01-16 19:07:34,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:34,747 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:34,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:34,754 INFO L225 Difference]: With dead ends: 2963 [2020-01-16 19:07:34,754 INFO L226 Difference]: Without dead ends: 2949 [2020-01-16 19:07:34,754 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:34,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2949 states. [2020-01-16 19:07:34,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2949 to 1577. [2020-01-16 19:07:34,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 19:07:34,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7025 transitions. [2020-01-16 19:07:34,820 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7025 transitions. Word has length 28 [2020-01-16 19:07:34,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:34,820 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7025 transitions. [2020-01-16 19:07:34,820 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:34,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7025 transitions. [2020-01-16 19:07:34,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:34,823 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:34,823 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:34,823 INFO L426 AbstractCegarLoop]: === Iteration 608 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:34,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:34,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1844599976, now seen corresponding path program 600 times [2020-01-16 19:07:34,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:34,823 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613450839] [2020-01-16 19:07:34,823 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:34,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:35,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:35,344 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613450839] [2020-01-16 19:07:35,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:35,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:35,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638440195] [2020-01-16 19:07:35,345 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:35,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:35,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:35,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:35,345 INFO L87 Difference]: Start difference. First operand 1577 states and 7025 transitions. Second operand 11 states. [2020-01-16 19:07:35,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:35,583 INFO L93 Difference]: Finished difference Result 2966 states and 11727 transitions. [2020-01-16 19:07:35,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:35,583 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:35,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:35,591 INFO L225 Difference]: With dead ends: 2966 [2020-01-16 19:07:35,591 INFO L226 Difference]: Without dead ends: 2927 [2020-01-16 19:07:35,591 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:35,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2927 states. [2020-01-16 19:07:35,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2927 to 1555. [2020-01-16 19:07:35,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1555 states. [2020-01-16 19:07:35,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 6981 transitions. [2020-01-16 19:07:35,658 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 6981 transitions. Word has length 28 [2020-01-16 19:07:35,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:35,658 INFO L478 AbstractCegarLoop]: Abstraction has 1555 states and 6981 transitions. [2020-01-16 19:07:35,658 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:35,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 6981 transitions. [2020-01-16 19:07:35,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:35,660 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:35,661 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:35,661 INFO L426 AbstractCegarLoop]: === Iteration 609 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:35,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:35,661 INFO L82 PathProgramCache]: Analyzing trace with hash -208706742, now seen corresponding path program 601 times [2020-01-16 19:07:35,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:35,661 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398451034] [2020-01-16 19:07:35,661 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:35,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:36,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:36,196 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398451034] [2020-01-16 19:07:36,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:36,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:36,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983796090] [2020-01-16 19:07:36,196 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:36,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:36,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:36,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:36,197 INFO L87 Difference]: Start difference. First operand 1555 states and 6981 transitions. Second operand 11 states. [2020-01-16 19:07:36,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:36,377 INFO L93 Difference]: Finished difference Result 2994 states and 11845 transitions. [2020-01-16 19:07:36,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:36,378 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:36,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:36,385 INFO L225 Difference]: With dead ends: 2994 [2020-01-16 19:07:36,385 INFO L226 Difference]: Without dead ends: 2978 [2020-01-16 19:07:36,385 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:36,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2978 states. [2020-01-16 19:07:36,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2978 to 1584. [2020-01-16 19:07:36,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1584 states. [2020-01-16 19:07:36,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 7085 transitions. [2020-01-16 19:07:36,452 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 7085 transitions. Word has length 28 [2020-01-16 19:07:36,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:36,452 INFO L478 AbstractCegarLoop]: Abstraction has 1584 states and 7085 transitions. [2020-01-16 19:07:36,452 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:36,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 7085 transitions. [2020-01-16 19:07:36,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:36,454 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:36,454 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:36,454 INFO L426 AbstractCegarLoop]: === Iteration 610 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:36,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:36,454 INFO L82 PathProgramCache]: Analyzing trace with hash 535995756, now seen corresponding path program 602 times [2020-01-16 19:07:36,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:36,455 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263005483] [2020-01-16 19:07:36,455 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:36,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:37,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:37,000 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263005483] [2020-01-16 19:07:37,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:37,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:37,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842768255] [2020-01-16 19:07:37,000 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:37,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:37,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:37,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:37,001 INFO L87 Difference]: Start difference. First operand 1584 states and 7085 transitions. Second operand 11 states. [2020-01-16 19:07:37,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:37,150 INFO L93 Difference]: Finished difference Result 2998 states and 11846 transitions. [2020-01-16 19:07:37,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:37,150 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:37,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:37,158 INFO L225 Difference]: With dead ends: 2998 [2020-01-16 19:07:37,158 INFO L226 Difference]: Without dead ends: 2971 [2020-01-16 19:07:37,158 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:37,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2971 states. [2020-01-16 19:07:37,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2971 to 1577. [2020-01-16 19:07:37,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 19:07:37,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7065 transitions. [2020-01-16 19:07:37,224 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7065 transitions. Word has length 28 [2020-01-16 19:07:37,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:37,224 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7065 transitions. [2020-01-16 19:07:37,224 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:37,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7065 transitions. [2020-01-16 19:07:37,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:37,226 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:37,227 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:37,227 INFO L426 AbstractCegarLoop]: === Iteration 611 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:37,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:37,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1402234216, now seen corresponding path program 603 times [2020-01-16 19:07:37,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:37,227 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044198015] [2020-01-16 19:07:37,227 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:37,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:37,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:37,764 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044198015] [2020-01-16 19:07:37,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:37,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:37,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235975085] [2020-01-16 19:07:37,764 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:37,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:37,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:37,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:37,765 INFO L87 Difference]: Start difference. First operand 1577 states and 7065 transitions. Second operand 11 states. [2020-01-16 19:07:37,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:37,944 INFO L93 Difference]: Finished difference Result 2991 states and 11833 transitions. [2020-01-16 19:07:37,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:37,945 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:37,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:37,952 INFO L225 Difference]: With dead ends: 2991 [2020-01-16 19:07:37,952 INFO L226 Difference]: Without dead ends: 2975 [2020-01-16 19:07:37,952 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:37,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2975 states. [2020-01-16 19:07:38,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2975 to 1583. [2020-01-16 19:07:38,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 19:07:38,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7076 transitions. [2020-01-16 19:07:38,019 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7076 transitions. Word has length 28 [2020-01-16 19:07:38,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:38,019 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7076 transitions. [2020-01-16 19:07:38,019 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:38,020 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7076 transitions. [2020-01-16 19:07:38,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:38,022 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:38,022 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:38,022 INFO L426 AbstractCegarLoop]: === Iteration 612 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:38,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:38,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1403328084, now seen corresponding path program 604 times [2020-01-16 19:07:38,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:38,022 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052106769] [2020-01-16 19:07:38,022 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:38,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:38,548 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 19:07:38,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:38,555 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052106769] [2020-01-16 19:07:38,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:38,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:38,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47551545] [2020-01-16 19:07:38,555 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:38,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:38,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:38,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:38,555 INFO L87 Difference]: Start difference. First operand 1583 states and 7076 transitions. Second operand 11 states. [2020-01-16 19:07:38,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:38,740 INFO L93 Difference]: Finished difference Result 2993 states and 11831 transitions. [2020-01-16 19:07:38,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:38,741 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:38,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:38,748 INFO L225 Difference]: With dead ends: 2993 [2020-01-16 19:07:38,748 INFO L226 Difference]: Without dead ends: 2969 [2020-01-16 19:07:38,749 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:38,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2969 states. [2020-01-16 19:07:38,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2969 to 1577. [2020-01-16 19:07:38,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 19:07:38,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7059 transitions. [2020-01-16 19:07:38,815 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7059 transitions. Word has length 28 [2020-01-16 19:07:38,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:38,815 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7059 transitions. [2020-01-16 19:07:38,815 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:38,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7059 transitions. [2020-01-16 19:07:38,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:38,817 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:38,818 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:38,818 INFO L426 AbstractCegarLoop]: === Iteration 613 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:38,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:38,818 INFO L82 PathProgramCache]: Analyzing trace with hash -537089624, now seen corresponding path program 605 times [2020-01-16 19:07:38,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:38,818 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002847067] [2020-01-16 19:07:38,818 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:38,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:39,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:39,362 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002847067] [2020-01-16 19:07:39,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:39,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:39,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278652641] [2020-01-16 19:07:39,362 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:39,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:39,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:39,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:39,362 INFO L87 Difference]: Start difference. First operand 1577 states and 7059 transitions. Second operand 11 states. [2020-01-16 19:07:39,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:39,499 INFO L93 Difference]: Finished difference Result 3003 states and 11850 transitions. [2020-01-16 19:07:39,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:39,499 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:39,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:39,507 INFO L225 Difference]: With dead ends: 3003 [2020-01-16 19:07:39,507 INFO L226 Difference]: Without dead ends: 2983 [2020-01-16 19:07:39,507 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:39,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2983 states. [2020-01-16 19:07:39,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2983 to 1587. [2020-01-16 19:07:39,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1587 states. [2020-01-16 19:07:39,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 7076 transitions. [2020-01-16 19:07:39,575 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 7076 transitions. Word has length 28 [2020-01-16 19:07:39,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:39,575 INFO L478 AbstractCegarLoop]: Abstraction has 1587 states and 7076 transitions. [2020-01-16 19:07:39,575 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:39,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 7076 transitions. [2020-01-16 19:07:39,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:39,577 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:39,578 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:39,578 INFO L426 AbstractCegarLoop]: === Iteration 614 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:39,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:39,578 INFO L82 PathProgramCache]: Analyzing trace with hash 207612874, now seen corresponding path program 606 times [2020-01-16 19:07:39,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:39,578 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259714007] [2020-01-16 19:07:39,578 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:39,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:40,131 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 19:07:40,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:40,137 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259714007] [2020-01-16 19:07:40,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:40,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:40,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249394521] [2020-01-16 19:07:40,138 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:40,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:40,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:40,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:40,138 INFO L87 Difference]: Start difference. First operand 1587 states and 7076 transitions. Second operand 11 states. [2020-01-16 19:07:40,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:40,331 INFO L93 Difference]: Finished difference Result 3001 states and 11838 transitions. [2020-01-16 19:07:40,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:40,332 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:40,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:40,339 INFO L225 Difference]: With dead ends: 3001 [2020-01-16 19:07:40,340 INFO L226 Difference]: Without dead ends: 2965 [2020-01-16 19:07:40,340 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:40,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2965 states. [2020-01-16 19:07:40,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2965 to 1569. [2020-01-16 19:07:40,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 19:07:40,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7038 transitions. [2020-01-16 19:07:40,407 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7038 transitions. Word has length 28 [2020-01-16 19:07:40,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:40,408 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7038 transitions. [2020-01-16 19:07:40,408 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:40,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7038 transitions. [2020-01-16 19:07:40,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:40,410 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:40,410 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:40,410 INFO L426 AbstractCegarLoop]: === Iteration 615 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:40,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:40,410 INFO L82 PathProgramCache]: Analyzing trace with hash -715053008, now seen corresponding path program 607 times [2020-01-16 19:07:40,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:40,410 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765531018] [2020-01-16 19:07:40,411 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:40,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:40,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:40,932 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765531018] [2020-01-16 19:07:40,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:40,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:40,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215211404] [2020-01-16 19:07:40,932 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:40,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:40,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:40,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:40,933 INFO L87 Difference]: Start difference. First operand 1569 states and 7038 transitions. Second operand 11 states. [2020-01-16 19:07:41,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:41,110 INFO L93 Difference]: Finished difference Result 2980 states and 11802 transitions. [2020-01-16 19:07:41,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:41,110 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:41,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:41,117 INFO L225 Difference]: With dead ends: 2980 [2020-01-16 19:07:41,117 INFO L226 Difference]: Without dead ends: 2964 [2020-01-16 19:07:41,117 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:41,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2964 states. [2020-01-16 19:07:41,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2964 to 1581. [2020-01-16 19:07:41,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 19:07:41,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7069 transitions. [2020-01-16 19:07:41,184 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7069 transitions. Word has length 28 [2020-01-16 19:07:41,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:41,184 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7069 transitions. [2020-01-16 19:07:41,185 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:41,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7069 transitions. [2020-01-16 19:07:41,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:41,187 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:41,187 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:41,187 INFO L426 AbstractCegarLoop]: === Iteration 616 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:41,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:41,187 INFO L82 PathProgramCache]: Analyzing trace with hash 29649490, now seen corresponding path program 608 times [2020-01-16 19:07:41,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:41,187 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716693363] [2020-01-16 19:07:41,188 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:41,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:41,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:41,721 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716693363] [2020-01-16 19:07:41,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:41,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:41,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714920306] [2020-01-16 19:07:41,721 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:41,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:41,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:41,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:41,721 INFO L87 Difference]: Start difference. First operand 1581 states and 7069 transitions. Second operand 11 states. [2020-01-16 19:07:41,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:41,860 INFO L93 Difference]: Finished difference Result 2984 states and 11803 transitions. [2020-01-16 19:07:41,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:41,861 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:41,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:41,868 INFO L225 Difference]: With dead ends: 2984 [2020-01-16 19:07:41,868 INFO L226 Difference]: Without dead ends: 2957 [2020-01-16 19:07:41,869 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:41,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2957 states. [2020-01-16 19:07:41,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2957 to 1574. [2020-01-16 19:07:41,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 19:07:41,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7051 transitions. [2020-01-16 19:07:41,936 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7051 transitions. Word has length 28 [2020-01-16 19:07:41,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:41,937 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7051 transitions. [2020-01-16 19:07:41,937 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:41,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7051 transitions. [2020-01-16 19:07:41,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:41,939 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:41,939 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:41,939 INFO L426 AbstractCegarLoop]: === Iteration 617 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:41,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:41,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1433743528, now seen corresponding path program 609 times [2020-01-16 19:07:41,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:41,939 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580053491] [2020-01-16 19:07:41,940 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:41,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:42,453 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 19:07:42,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:42,460 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580053491] [2020-01-16 19:07:42,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:42,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:42,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937843528] [2020-01-16 19:07:42,460 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:42,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:42,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:42,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:42,461 INFO L87 Difference]: Start difference. First operand 1574 states and 7051 transitions. Second operand 11 states. [2020-01-16 19:07:42,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:42,631 INFO L93 Difference]: Finished difference Result 2971 states and 11778 transitions. [2020-01-16 19:07:42,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:42,631 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:42,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:42,639 INFO L225 Difference]: With dead ends: 2971 [2020-01-16 19:07:42,639 INFO L226 Difference]: Without dead ends: 2955 [2020-01-16 19:07:42,639 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:42,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2955 states. [2020-01-16 19:07:42,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2955 to 1578. [2020-01-16 19:07:42,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 19:07:42,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7058 transitions. [2020-01-16 19:07:42,709 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7058 transitions. Word has length 28 [2020-01-16 19:07:42,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:42,710 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7058 transitions. [2020-01-16 19:07:42,710 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:42,710 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7058 transitions. [2020-01-16 19:07:42,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:42,712 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:42,713 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:42,713 INFO L426 AbstractCegarLoop]: === Iteration 618 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:42,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:42,713 INFO L82 PathProgramCache]: Analyzing trace with hash 862288722, now seen corresponding path program 610 times [2020-01-16 19:07:42,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:42,713 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826029944] [2020-01-16 19:07:42,713 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:42,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:43,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:43,224 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826029944] [2020-01-16 19:07:43,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:43,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:43,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84851616] [2020-01-16 19:07:43,224 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:43,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:43,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:43,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:43,225 INFO L87 Difference]: Start difference. First operand 1578 states and 7058 transitions. Second operand 11 states. [2020-01-16 19:07:43,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:43,420 INFO L93 Difference]: Finished difference Result 2969 states and 11770 transitions. [2020-01-16 19:07:43,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:43,420 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:43,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:43,427 INFO L225 Difference]: With dead ends: 2969 [2020-01-16 19:07:43,428 INFO L226 Difference]: Without dead ends: 2951 [2020-01-16 19:07:43,428 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:43,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2020-01-16 19:07:43,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 1574. [2020-01-16 19:07:43,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 19:07:43,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7047 transitions. [2020-01-16 19:07:43,494 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7047 transitions. Word has length 28 [2020-01-16 19:07:43,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:43,494 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7047 transitions. [2020-01-16 19:07:43,494 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:43,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7047 transitions. [2020-01-16 19:07:43,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:43,496 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:43,496 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:43,497 INFO L426 AbstractCegarLoop]: === Iteration 619 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:43,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:43,497 INFO L82 PathProgramCache]: Analyzing trace with hash -505580312, now seen corresponding path program 611 times [2020-01-16 19:07:43,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:43,497 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544873529] [2020-01-16 19:07:43,497 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:43,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:44,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:44,020 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544873529] [2020-01-16 19:07:44,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:44,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:44,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970924920] [2020-01-16 19:07:44,020 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:44,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:44,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:44,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:44,021 INFO L87 Difference]: Start difference. First operand 1574 states and 7047 transitions. Second operand 11 states. [2020-01-16 19:07:44,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:44,164 INFO L93 Difference]: Finished difference Result 2980 states and 11790 transitions. [2020-01-16 19:07:44,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:44,165 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:44,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:44,172 INFO L225 Difference]: With dead ends: 2980 [2020-01-16 19:07:44,172 INFO L226 Difference]: Without dead ends: 2960 [2020-01-16 19:07:44,172 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:44,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2960 states. [2020-01-16 19:07:44,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2960 to 1579. [2020-01-16 19:07:44,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 19:07:44,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7055 transitions. [2020-01-16 19:07:44,238 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7055 transitions. Word has length 28 [2020-01-16 19:07:44,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:44,238 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7055 transitions. [2020-01-16 19:07:44,238 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:44,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7055 transitions. [2020-01-16 19:07:44,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:44,240 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:44,240 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:44,241 INFO L426 AbstractCegarLoop]: === Iteration 620 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:44,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:44,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1821737616, now seen corresponding path program 612 times [2020-01-16 19:07:44,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:44,241 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48713773] [2020-01-16 19:07:44,241 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:44,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:44,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:44,765 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48713773] [2020-01-16 19:07:44,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:44,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:44,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930625777] [2020-01-16 19:07:44,766 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:44,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:44,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:44,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:44,766 INFO L87 Difference]: Start difference. First operand 1579 states and 7055 transitions. Second operand 11 states. [2020-01-16 19:07:44,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:44,945 INFO L93 Difference]: Finished difference Result 2974 states and 11774 transitions. [2020-01-16 19:07:44,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:44,945 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:44,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:44,952 INFO L225 Difference]: With dead ends: 2974 [2020-01-16 19:07:44,952 INFO L226 Difference]: Without dead ends: 2950 [2020-01-16 19:07:44,953 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:44,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2020-01-16 19:07:45,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 1569. [2020-01-16 19:07:45,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 19:07:45,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7033 transitions. [2020-01-16 19:07:45,019 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7033 transitions. Word has length 28 [2020-01-16 19:07:45,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:45,019 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7033 transitions. [2020-01-16 19:07:45,019 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:45,019 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7033 transitions. [2020-01-16 19:07:45,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:45,021 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:45,021 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:45,021 INFO L426 AbstractCegarLoop]: === Iteration 621 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:45,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:45,021 INFO L82 PathProgramCache]: Analyzing trace with hash -704549904, now seen corresponding path program 613 times [2020-01-16 19:07:45,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:45,022 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765102884] [2020-01-16 19:07:45,022 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:45,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:45,556 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 19:07:45,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:45,562 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765102884] [2020-01-16 19:07:45,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:45,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:45,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242315948] [2020-01-16 19:07:45,562 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:45,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:45,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:45,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:45,563 INFO L87 Difference]: Start difference. First operand 1569 states and 7033 transitions. Second operand 11 states. [2020-01-16 19:07:45,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:45,733 INFO L93 Difference]: Finished difference Result 2972 states and 11782 transitions. [2020-01-16 19:07:45,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:45,734 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:45,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:45,741 INFO L225 Difference]: With dead ends: 2972 [2020-01-16 19:07:45,742 INFO L226 Difference]: Without dead ends: 2956 [2020-01-16 19:07:45,742 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:45,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2020-01-16 19:07:45,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 1579. [2020-01-16 19:07:45,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 19:07:45,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7059 transitions. [2020-01-16 19:07:45,809 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7059 transitions. Word has length 28 [2020-01-16 19:07:45,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:45,809 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7059 transitions. [2020-01-16 19:07:45,810 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:45,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7059 transitions. [2020-01-16 19:07:45,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:45,812 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:45,812 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:45,812 INFO L426 AbstractCegarLoop]: === Iteration 622 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:45,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:45,812 INFO L82 PathProgramCache]: Analyzing trace with hash 784855092, now seen corresponding path program 614 times [2020-01-16 19:07:45,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:45,812 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070346996] [2020-01-16 19:07:45,812 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:45,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:46,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:46,324 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070346996] [2020-01-16 19:07:46,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:46,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:46,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231374113] [2020-01-16 19:07:46,324 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:46,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:46,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:46,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:46,325 INFO L87 Difference]: Start difference. First operand 1579 states and 7059 transitions. Second operand 11 states. [2020-01-16 19:07:46,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:46,500 INFO L93 Difference]: Finished difference Result 2974 states and 11780 transitions. [2020-01-16 19:07:46,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:46,501 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:46,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:46,507 INFO L225 Difference]: With dead ends: 2974 [2020-01-16 19:07:46,508 INFO L226 Difference]: Without dead ends: 2950 [2020-01-16 19:07:46,508 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:46,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2020-01-16 19:07:46,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 1573. [2020-01-16 19:07:46,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:07:46,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7044 transitions. [2020-01-16 19:07:46,575 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7044 transitions. Word has length 28 [2020-01-16 19:07:46,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:46,576 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7044 transitions. [2020-01-16 19:07:46,576 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:46,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7044 transitions. [2020-01-16 19:07:46,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:46,578 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:46,578 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:46,578 INFO L426 AbstractCegarLoop]: === Iteration 623 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:46,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:46,578 INFO L82 PathProgramCache]: Analyzing trace with hash -166694326, now seen corresponding path program 615 times [2020-01-16 19:07:46,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:46,579 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483956299] [2020-01-16 19:07:46,579 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:46,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:47,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:47,131 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483956299] [2020-01-16 19:07:47,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:47,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:47,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429867439] [2020-01-16 19:07:47,131 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:47,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:47,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:47,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:47,132 INFO L87 Difference]: Start difference. First operand 1573 states and 7044 transitions. Second operand 11 states. [2020-01-16 19:07:47,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:47,329 INFO L93 Difference]: Finished difference Result 2966 states and 11764 transitions. [2020-01-16 19:07:47,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:47,329 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:47,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:47,336 INFO L225 Difference]: With dead ends: 2966 [2020-01-16 19:07:47,336 INFO L226 Difference]: Without dead ends: 2950 [2020-01-16 19:07:47,336 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:47,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2020-01-16 19:07:47,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 1577. [2020-01-16 19:07:47,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 19:07:47,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7051 transitions. [2020-01-16 19:07:47,404 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7051 transitions. Word has length 28 [2020-01-16 19:07:47,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:47,404 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7051 transitions. [2020-01-16 19:07:47,404 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:47,404 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7051 transitions. [2020-01-16 19:07:47,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:47,406 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:47,406 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:47,406 INFO L426 AbstractCegarLoop]: === Iteration 624 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:47,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:47,406 INFO L82 PathProgramCache]: Analyzing trace with hash -738149132, now seen corresponding path program 616 times [2020-01-16 19:07:47,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:47,407 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46315799] [2020-01-16 19:07:47,407 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:47,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:47,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:47,919 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46315799] [2020-01-16 19:07:47,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:47,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:47,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858319761] [2020-01-16 19:07:47,919 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:47,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:47,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:47,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:47,920 INFO L87 Difference]: Start difference. First operand 1577 states and 7051 transitions. Second operand 11 states. [2020-01-16 19:07:48,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:48,139 INFO L93 Difference]: Finished difference Result 2964 states and 11756 transitions. [2020-01-16 19:07:48,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:48,140 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:48,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:48,147 INFO L225 Difference]: With dead ends: 2964 [2020-01-16 19:07:48,147 INFO L226 Difference]: Without dead ends: 2946 [2020-01-16 19:07:48,148 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:48,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2946 states. [2020-01-16 19:07:48,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2946 to 1573. [2020-01-16 19:07:48,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:07:48,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7040 transitions. [2020-01-16 19:07:48,215 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7040 transitions. Word has length 28 [2020-01-16 19:07:48,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:48,215 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7040 transitions. [2020-01-16 19:07:48,215 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:48,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7040 transitions. [2020-01-16 19:07:48,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:48,217 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:48,217 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:48,218 INFO L426 AbstractCegarLoop]: === Iteration 625 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:48,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:48,218 INFO L82 PathProgramCache]: Analyzing trace with hash 249625290, now seen corresponding path program 617 times [2020-01-16 19:07:48,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:48,218 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272843257] [2020-01-16 19:07:48,218 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:48,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:48,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:48,722 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272843257] [2020-01-16 19:07:48,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:48,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:48,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149921536] [2020-01-16 19:07:48,722 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:48,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:48,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:48,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:48,723 INFO L87 Difference]: Start difference. First operand 1573 states and 7040 transitions. Second operand 11 states. [2020-01-16 19:07:48,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:48,919 INFO L93 Difference]: Finished difference Result 2970 states and 11768 transitions. [2020-01-16 19:07:48,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:48,920 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:48,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:48,927 INFO L225 Difference]: With dead ends: 2970 [2020-01-16 19:07:48,927 INFO L226 Difference]: Without dead ends: 2952 [2020-01-16 19:07:48,927 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:48,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2020-01-16 19:07:48,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 1577. [2020-01-16 19:07:48,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 19:07:48,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7047 transitions. [2020-01-16 19:07:48,993 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7047 transitions. Word has length 28 [2020-01-16 19:07:48,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:48,993 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7047 transitions. [2020-01-16 19:07:48,993 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:48,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7047 transitions. [2020-01-16 19:07:48,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:48,996 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:48,996 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:48,996 INFO L426 AbstractCegarLoop]: === Iteration 626 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:48,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:48,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1811234512, now seen corresponding path program 618 times [2020-01-16 19:07:48,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:48,996 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258010007] [2020-01-16 19:07:48,996 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:48,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:49,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:49,515 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258010007] [2020-01-16 19:07:49,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:49,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:49,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074317090] [2020-01-16 19:07:49,515 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:49,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:49,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:49,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:49,516 INFO L87 Difference]: Start difference. First operand 1577 states and 7047 transitions. Second operand 11 states. [2020-01-16 19:07:49,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:49,707 INFO L93 Difference]: Finished difference Result 2966 states and 11756 transitions. [2020-01-16 19:07:49,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:49,708 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:49,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:49,715 INFO L225 Difference]: With dead ends: 2966 [2020-01-16 19:07:49,716 INFO L226 Difference]: Without dead ends: 2944 [2020-01-16 19:07:49,716 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:49,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2944 states. [2020-01-16 19:07:49,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2944 to 1569. [2020-01-16 19:07:49,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 19:07:49,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7029 transitions. [2020-01-16 19:07:49,781 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7029 transitions. Word has length 28 [2020-01-16 19:07:49,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:49,781 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7029 transitions. [2020-01-16 19:07:49,781 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:49,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7029 transitions. [2020-01-16 19:07:49,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:49,784 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:49,784 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:49,784 INFO L426 AbstractCegarLoop]: === Iteration 627 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:49,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:49,784 INFO L82 PathProgramCache]: Analyzing trace with hash 50655698, now seen corresponding path program 619 times [2020-01-16 19:07:49,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:49,784 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25525811] [2020-01-16 19:07:49,784 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:49,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:50,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:50,333 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25525811] [2020-01-16 19:07:50,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:50,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:50,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356241532] [2020-01-16 19:07:50,333 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:50,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:50,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:50,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:50,334 INFO L87 Difference]: Start difference. First operand 1569 states and 7029 transitions. Second operand 11 states. [2020-01-16 19:07:50,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:50,494 INFO L93 Difference]: Finished difference Result 2995 states and 11824 transitions. [2020-01-16 19:07:50,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:50,494 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:50,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:50,502 INFO L225 Difference]: With dead ends: 2995 [2020-01-16 19:07:50,502 INFO L226 Difference]: Without dead ends: 2975 [2020-01-16 19:07:50,502 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:50,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2975 states. [2020-01-16 19:07:50,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2975 to 1585. [2020-01-16 19:07:50,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 19:07:50,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7066 transitions. [2020-01-16 19:07:50,569 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7066 transitions. Word has length 28 [2020-01-16 19:07:50,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:50,569 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7066 transitions. [2020-01-16 19:07:50,569 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:50,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7066 transitions. [2020-01-16 19:07:50,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:50,571 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:50,571 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:50,571 INFO L426 AbstractCegarLoop]: === Iteration 628 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:50,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:50,571 INFO L82 PathProgramCache]: Analyzing trace with hash 795358196, now seen corresponding path program 620 times [2020-01-16 19:07:50,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:50,572 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401061789] [2020-01-16 19:07:50,572 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:50,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:51,107 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 19:07:51,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:51,114 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401061789] [2020-01-16 19:07:51,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:51,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:51,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976268834] [2020-01-16 19:07:51,114 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:51,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:51,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:51,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:51,114 INFO L87 Difference]: Start difference. First operand 1585 states and 7066 transitions. Second operand 11 states. [2020-01-16 19:07:51,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:51,313 INFO L93 Difference]: Finished difference Result 2993 states and 11812 transitions. [2020-01-16 19:07:51,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:51,313 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:51,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:51,321 INFO L225 Difference]: With dead ends: 2993 [2020-01-16 19:07:51,321 INFO L226 Difference]: Without dead ends: 2965 [2020-01-16 19:07:51,321 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:51,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2965 states. [2020-01-16 19:07:51,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2965 to 1575. [2020-01-16 19:07:51,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:07:51,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7043 transitions. [2020-01-16 19:07:51,413 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7043 transitions. Word has length 28 [2020-01-16 19:07:51,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:51,413 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7043 transitions. [2020-01-16 19:07:51,413 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:51,413 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7043 transitions. [2020-01-16 19:07:51,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:51,415 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:51,415 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:51,415 INFO L426 AbstractCegarLoop]: === Iteration 629 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:51,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:51,416 INFO L82 PathProgramCache]: Analyzing trace with hash 588511276, now seen corresponding path program 621 times [2020-01-16 19:07:51,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:51,416 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444982933] [2020-01-16 19:07:51,416 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:51,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:51,943 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 19:07:51,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:51,950 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444982933] [2020-01-16 19:07:51,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:51,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:51,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928558423] [2020-01-16 19:07:51,951 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:51,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:51,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:51,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:51,951 INFO L87 Difference]: Start difference. First operand 1575 states and 7043 transitions. Second operand 11 states. [2020-01-16 19:07:52,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:52,090 INFO L93 Difference]: Finished difference Result 2986 states and 11797 transitions. [2020-01-16 19:07:52,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:52,090 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:52,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:52,097 INFO L225 Difference]: With dead ends: 2986 [2020-01-16 19:07:52,097 INFO L226 Difference]: Without dead ends: 2966 [2020-01-16 19:07:52,097 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:52,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2966 states. [2020-01-16 19:07:52,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2966 to 1580. [2020-01-16 19:07:52,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 19:07:52,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7051 transitions. [2020-01-16 19:07:52,164 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7051 transitions. Word has length 28 [2020-01-16 19:07:52,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:52,164 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7051 transitions. [2020-01-16 19:07:52,164 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:52,164 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7051 transitions. [2020-01-16 19:07:52,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:52,166 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:52,166 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:52,166 INFO L426 AbstractCegarLoop]: === Iteration 630 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:52,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:52,167 INFO L82 PathProgramCache]: Analyzing trace with hash -727646028, now seen corresponding path program 622 times [2020-01-16 19:07:52,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:52,167 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311004423] [2020-01-16 19:07:52,167 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:52,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:52,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:52,674 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311004423] [2020-01-16 19:07:52,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:52,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:52,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383935027] [2020-01-16 19:07:52,675 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:52,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:52,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:52,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:52,675 INFO L87 Difference]: Start difference. First operand 1580 states and 7051 transitions. Second operand 11 states. [2020-01-16 19:07:52,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:52,847 INFO L93 Difference]: Finished difference Result 2980 states and 11781 transitions. [2020-01-16 19:07:52,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:52,847 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:52,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:52,854 INFO L225 Difference]: With dead ends: 2980 [2020-01-16 19:07:52,854 INFO L226 Difference]: Without dead ends: 2961 [2020-01-16 19:07:52,854 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:52,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2020-01-16 19:07:52,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 1575. [2020-01-16 19:07:52,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:07:52,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7038 transitions. [2020-01-16 19:07:52,921 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7038 transitions. Word has length 28 [2020-01-16 19:07:52,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:52,921 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7038 transitions. [2020-01-16 19:07:52,921 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:52,921 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7038 transitions. [2020-01-16 19:07:52,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:52,923 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:52,923 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:52,923 INFO L426 AbstractCegarLoop]: === Iteration 631 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:52,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:52,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1350812564, now seen corresponding path program 623 times [2020-01-16 19:07:52,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:52,924 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374536635] [2020-01-16 19:07:52,924 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:52,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:53,444 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 19:07:53,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:53,452 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374536635] [2020-01-16 19:07:53,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:53,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:53,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038778330] [2020-01-16 19:07:53,452 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:53,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:53,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:53,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:53,453 INFO L87 Difference]: Start difference. First operand 1575 states and 7038 transitions. Second operand 11 states. [2020-01-16 19:07:53,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:53,641 INFO L93 Difference]: Finished difference Result 2981 states and 11784 transitions. [2020-01-16 19:07:53,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:53,641 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:53,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:53,649 INFO L225 Difference]: With dead ends: 2981 [2020-01-16 19:07:53,649 INFO L226 Difference]: Without dead ends: 2963 [2020-01-16 19:07:53,649 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:53,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2963 states. [2020-01-16 19:07:53,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2963 to 1579. [2020-01-16 19:07:53,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 19:07:53,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7045 transitions. [2020-01-16 19:07:53,715 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7045 transitions. Word has length 28 [2020-01-16 19:07:53,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:53,715 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7045 transitions. [2020-01-16 19:07:53,716 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:53,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7045 transitions. [2020-01-16 19:07:53,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:53,718 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:53,718 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:53,718 INFO L426 AbstractCegarLoop]: === Iteration 632 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:53,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:53,718 INFO L82 PathProgramCache]: Analyzing trace with hash 883294930, now seen corresponding path program 624 times [2020-01-16 19:07:53,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:53,718 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855540419] [2020-01-16 19:07:53,718 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:53,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:54,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:54,244 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855540419] [2020-01-16 19:07:54,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:54,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:54,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649680175] [2020-01-16 19:07:54,245 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:54,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:54,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:54,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:54,245 INFO L87 Difference]: Start difference. First operand 1579 states and 7045 transitions. Second operand 11 states. [2020-01-16 19:07:54,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:54,483 INFO L93 Difference]: Finished difference Result 2977 states and 11772 transitions. [2020-01-16 19:07:54,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:54,483 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:54,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:54,491 INFO L225 Difference]: With dead ends: 2977 [2020-01-16 19:07:54,491 INFO L226 Difference]: Without dead ends: 2947 [2020-01-16 19:07:54,491 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:54,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2947 states. [2020-01-16 19:07:54,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2947 to 1563. [2020-01-16 19:07:54,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 19:07:54,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7012 transitions. [2020-01-16 19:07:54,556 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7012 transitions. Word has length 28 [2020-01-16 19:07:54,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:54,557 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7012 transitions. [2020-01-16 19:07:54,557 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:54,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7012 transitions. [2020-01-16 19:07:54,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:54,559 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:54,559 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:54,559 INFO L426 AbstractCegarLoop]: === Iteration 633 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:54,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:54,559 INFO L82 PathProgramCache]: Analyzing trace with hash -651605882, now seen corresponding path program 625 times [2020-01-16 19:07:54,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:54,559 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326082930] [2020-01-16 19:07:54,559 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:54,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:55,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:55,092 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326082930] [2020-01-16 19:07:55,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:55,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:55,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720482621] [2020-01-16 19:07:55,092 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:55,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:55,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:55,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:55,093 INFO L87 Difference]: Start difference. First operand 1563 states and 7012 transitions. Second operand 11 states. [2020-01-16 19:07:55,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:55,299 INFO L93 Difference]: Finished difference Result 3017 states and 11911 transitions. [2020-01-16 19:07:55,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:55,299 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:55,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:55,307 INFO L225 Difference]: With dead ends: 3017 [2020-01-16 19:07:55,307 INFO L226 Difference]: Without dead ends: 3001 [2020-01-16 19:07:55,307 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:55,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3001 states. [2020-01-16 19:07:55,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3001 to 1588. [2020-01-16 19:07:55,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1588 states. [2020-01-16 19:07:55,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 7092 transitions. [2020-01-16 19:07:55,374 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 7092 transitions. Word has length 28 [2020-01-16 19:07:55,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:55,374 INFO L478 AbstractCegarLoop]: Abstraction has 1588 states and 7092 transitions. [2020-01-16 19:07:55,374 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:55,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 7092 transitions. [2020-01-16 19:07:55,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:55,377 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:55,377 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:55,377 INFO L426 AbstractCegarLoop]: === Iteration 634 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:55,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:55,377 INFO L82 PathProgramCache]: Analyzing trace with hash 93096616, now seen corresponding path program 626 times [2020-01-16 19:07:55,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:55,377 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335257161] [2020-01-16 19:07:55,377 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:55,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:55,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:55,927 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335257161] [2020-01-16 19:07:55,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:55,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:55,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286856371] [2020-01-16 19:07:55,928 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:55,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:55,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:55,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:55,928 INFO L87 Difference]: Start difference. First operand 1588 states and 7092 transitions. Second operand 11 states. [2020-01-16 19:07:56,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:56,101 INFO L93 Difference]: Finished difference Result 3021 states and 11912 transitions. [2020-01-16 19:07:56,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:56,102 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:56,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:56,109 INFO L225 Difference]: With dead ends: 3021 [2020-01-16 19:07:56,109 INFO L226 Difference]: Without dead ends: 2994 [2020-01-16 19:07:56,110 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:56,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2020-01-16 19:07:56,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 1581. [2020-01-16 19:07:56,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 19:07:56,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7072 transitions. [2020-01-16 19:07:56,176 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7072 transitions. Word has length 28 [2020-01-16 19:07:56,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:56,176 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7072 transitions. [2020-01-16 19:07:56,176 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:56,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7072 transitions. [2020-01-16 19:07:56,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:56,178 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:56,179 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:56,179 INFO L426 AbstractCegarLoop]: === Iteration 635 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:56,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:56,179 INFO L82 PathProgramCache]: Analyzing trace with hash 959335076, now seen corresponding path program 627 times [2020-01-16 19:07:56,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:56,179 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315750007] [2020-01-16 19:07:56,179 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:56,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:56,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:56,711 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315750007] [2020-01-16 19:07:56,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:56,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:56,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78282908] [2020-01-16 19:07:56,711 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:56,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:56,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:56,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:56,712 INFO L87 Difference]: Start difference. First operand 1581 states and 7072 transitions. Second operand 11 states. [2020-01-16 19:07:56,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:56,916 INFO L93 Difference]: Finished difference Result 3014 states and 11899 transitions. [2020-01-16 19:07:56,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:56,916 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:56,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:56,924 INFO L225 Difference]: With dead ends: 3014 [2020-01-16 19:07:56,924 INFO L226 Difference]: Without dead ends: 2998 [2020-01-16 19:07:56,924 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:56,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2998 states. [2020-01-16 19:07:56,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2998 to 1587. [2020-01-16 19:07:56,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1587 states. [2020-01-16 19:07:56,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 7083 transitions. [2020-01-16 19:07:56,991 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 7083 transitions. Word has length 28 [2020-01-16 19:07:56,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:56,991 INFO L478 AbstractCegarLoop]: Abstraction has 1587 states and 7083 transitions. [2020-01-16 19:07:56,991 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:56,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 7083 transitions. [2020-01-16 19:07:56,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:56,993 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:56,993 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:56,993 INFO L426 AbstractCegarLoop]: === Iteration 636 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:56,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:56,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1846227224, now seen corresponding path program 628 times [2020-01-16 19:07:56,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:56,994 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070758066] [2020-01-16 19:07:56,994 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:56,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:57,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:57,548 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070758066] [2020-01-16 19:07:57,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:57,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:57,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167952705] [2020-01-16 19:07:57,548 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:57,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:57,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:57,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:57,549 INFO L87 Difference]: Start difference. First operand 1587 states and 7083 transitions. Second operand 11 states. [2020-01-16 19:07:57,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:57,769 INFO L93 Difference]: Finished difference Result 3016 states and 11897 transitions. [2020-01-16 19:07:57,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:57,769 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:57,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:57,776 INFO L225 Difference]: With dead ends: 3016 [2020-01-16 19:07:57,776 INFO L226 Difference]: Without dead ends: 2992 [2020-01-16 19:07:57,776 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:57,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2992 states. [2020-01-16 19:07:57,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2992 to 1581. [2020-01-16 19:07:57,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 19:07:57,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7066 transitions. [2020-01-16 19:07:57,842 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7066 transitions. Word has length 28 [2020-01-16 19:07:57,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:57,843 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7066 transitions. [2020-01-16 19:07:57,843 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:57,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7066 transitions. [2020-01-16 19:07:57,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:57,845 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:57,845 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:57,845 INFO L426 AbstractCegarLoop]: === Iteration 637 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:57,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:57,845 INFO L82 PathProgramCache]: Analyzing trace with hash -979988764, now seen corresponding path program 629 times [2020-01-16 19:07:57,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:57,845 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856190449] [2020-01-16 19:07:57,846 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:57,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:58,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:58,407 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856190449] [2020-01-16 19:07:58,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:58,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:58,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323472185] [2020-01-16 19:07:58,407 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:58,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:58,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:58,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:58,408 INFO L87 Difference]: Start difference. First operand 1581 states and 7066 transitions. Second operand 11 states. [2020-01-16 19:07:58,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:58,573 INFO L93 Difference]: Finished difference Result 3026 states and 11916 transitions. [2020-01-16 19:07:58,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:58,574 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:58,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:58,581 INFO L225 Difference]: With dead ends: 3026 [2020-01-16 19:07:58,581 INFO L226 Difference]: Without dead ends: 3006 [2020-01-16 19:07:58,581 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:58,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3006 states. [2020-01-16 19:07:58,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3006 to 1591. [2020-01-16 19:07:58,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1591 states. [2020-01-16 19:07:58,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1591 states to 1591 states and 7083 transitions. [2020-01-16 19:07:58,648 INFO L78 Accepts]: Start accepts. Automaton has 1591 states and 7083 transitions. Word has length 28 [2020-01-16 19:07:58,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:58,648 INFO L478 AbstractCegarLoop]: Abstraction has 1591 states and 7083 transitions. [2020-01-16 19:07:58,648 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:58,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1591 states and 7083 transitions. [2020-01-16 19:07:58,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:58,650 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:58,650 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:58,650 INFO L426 AbstractCegarLoop]: === Iteration 638 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:58,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:58,651 INFO L82 PathProgramCache]: Analyzing trace with hash -235286266, now seen corresponding path program 630 times [2020-01-16 19:07:58,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:58,651 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531595107] [2020-01-16 19:07:58,651 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:58,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:07:59,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:07:59,192 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531595107] [2020-01-16 19:07:59,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:07:59,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:07:59,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127112641] [2020-01-16 19:07:59,192 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:07:59,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:07:59,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:07:59,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:07:59,193 INFO L87 Difference]: Start difference. First operand 1591 states and 7083 transitions. Second operand 11 states. [2020-01-16 19:07:59,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:07:59,380 INFO L93 Difference]: Finished difference Result 3024 states and 11904 transitions. [2020-01-16 19:07:59,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:07:59,380 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:07:59,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:07:59,387 INFO L225 Difference]: With dead ends: 3024 [2020-01-16 19:07:59,387 INFO L226 Difference]: Without dead ends: 2988 [2020-01-16 19:07:59,388 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:07:59,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2988 states. [2020-01-16 19:07:59,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2988 to 1573. [2020-01-16 19:07:59,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:07:59,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7043 transitions. [2020-01-16 19:07:59,453 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7043 transitions. Word has length 28 [2020-01-16 19:07:59,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:07:59,453 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7043 transitions. [2020-01-16 19:07:59,453 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:07:59,454 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7043 transitions. [2020-01-16 19:07:59,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:07:59,456 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:07:59,456 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:07:59,456 INFO L426 AbstractCegarLoop]: === Iteration 639 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:07:59,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:07:59,456 INFO L82 PathProgramCache]: Analyzing trace with hash -63860560, now seen corresponding path program 631 times [2020-01-16 19:07:59,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:07:59,456 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163802711] [2020-01-16 19:07:59,456 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:07:59,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:00,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:00,004 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163802711] [2020-01-16 19:08:00,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:00,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:00,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003984473] [2020-01-16 19:08:00,005 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:00,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:00,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:00,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:00,005 INFO L87 Difference]: Start difference. First operand 1573 states and 7043 transitions. Second operand 11 states. [2020-01-16 19:08:00,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:00,210 INFO L93 Difference]: Finished difference Result 3013 states and 11895 transitions. [2020-01-16 19:08:00,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:00,211 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:00,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:00,218 INFO L225 Difference]: With dead ends: 3013 [2020-01-16 19:08:00,218 INFO L226 Difference]: Without dead ends: 2997 [2020-01-16 19:08:00,218 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:00,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2997 states. [2020-01-16 19:08:00,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2997 to 1587. [2020-01-16 19:08:00,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1587 states. [2020-01-16 19:08:00,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 7082 transitions. [2020-01-16 19:08:00,286 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 7082 transitions. Word has length 28 [2020-01-16 19:08:00,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:00,286 INFO L478 AbstractCegarLoop]: Abstraction has 1587 states and 7082 transitions. [2020-01-16 19:08:00,286 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:00,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 7082 transitions. [2020-01-16 19:08:00,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:00,289 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:00,289 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:00,289 INFO L426 AbstractCegarLoop]: === Iteration 640 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:00,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:00,289 INFO L82 PathProgramCache]: Analyzing trace with hash 680841938, now seen corresponding path program 632 times [2020-01-16 19:08:00,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:00,290 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197309592] [2020-01-16 19:08:00,290 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:00,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:00,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:00,831 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197309592] [2020-01-16 19:08:00,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:00,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:00,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901148470] [2020-01-16 19:08:00,831 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:00,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:00,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:00,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:00,832 INFO L87 Difference]: Start difference. First operand 1587 states and 7082 transitions. Second operand 11 states. [2020-01-16 19:08:00,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:00,976 INFO L93 Difference]: Finished difference Result 3017 states and 11896 transitions. [2020-01-16 19:08:00,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:00,977 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:00,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:00,984 INFO L225 Difference]: With dead ends: 3017 [2020-01-16 19:08:00,985 INFO L226 Difference]: Without dead ends: 2990 [2020-01-16 19:08:00,985 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:01,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2990 states. [2020-01-16 19:08:01,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2990 to 1580. [2020-01-16 19:08:01,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 19:08:01,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7062 transitions. [2020-01-16 19:08:01,053 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7062 transitions. Word has length 28 [2020-01-16 19:08:01,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:01,053 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7062 transitions. [2020-01-16 19:08:01,053 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:01,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7062 transitions. [2020-01-16 19:08:01,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:01,056 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:01,056 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:01,056 INFO L426 AbstractCegarLoop]: === Iteration 641 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:01,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:01,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1011850596, now seen corresponding path program 633 times [2020-01-16 19:08:01,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:01,056 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287789964] [2020-01-16 19:08:01,057 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:01,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:01,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:01,597 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287789964] [2020-01-16 19:08:01,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:01,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:01,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849531762] [2020-01-16 19:08:01,598 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:01,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:01,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:01,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:01,598 INFO L87 Difference]: Start difference. First operand 1580 states and 7062 transitions. Second operand 11 states. [2020-01-16 19:08:01,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:01,779 INFO L93 Difference]: Finished difference Result 3009 states and 11881 transitions. [2020-01-16 19:08:01,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:01,780 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:01,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:01,787 INFO L225 Difference]: With dead ends: 3009 [2020-01-16 19:08:01,787 INFO L226 Difference]: Without dead ends: 2993 [2020-01-16 19:08:01,788 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:01,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2993 states. [2020-01-16 19:08:01,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2993 to 1586. [2020-01-16 19:08:01,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1586 states. [2020-01-16 19:08:01,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 7073 transitions. [2020-01-16 19:08:01,854 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 7073 transitions. Word has length 28 [2020-01-16 19:08:01,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:01,854 INFO L478 AbstractCegarLoop]: Abstraction has 1586 states and 7073 transitions. [2020-01-16 19:08:01,854 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:01,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 7073 transitions. [2020-01-16 19:08:01,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:01,856 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:01,856 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:01,856 INFO L426 AbstractCegarLoop]: === Iteration 642 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:01,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:01,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1929800786, now seen corresponding path program 634 times [2020-01-16 19:08:01,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:01,857 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770642099] [2020-01-16 19:08:01,857 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:01,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:02,390 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 19:08:02,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:02,397 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770642099] [2020-01-16 19:08:02,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:02,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:02,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730057773] [2020-01-16 19:08:02,398 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:02,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:02,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:02,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:02,398 INFO L87 Difference]: Start difference. First operand 1586 states and 7073 transitions. Second operand 11 states. [2020-01-16 19:08:02,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:02,576 INFO L93 Difference]: Finished difference Result 3010 states and 11877 transitions. [2020-01-16 19:08:02,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:02,577 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:02,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:02,584 INFO L225 Difference]: With dead ends: 3010 [2020-01-16 19:08:02,584 INFO L226 Difference]: Without dead ends: 2987 [2020-01-16 19:08:02,584 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:02,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2987 states. [2020-01-16 19:08:02,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2987 to 1580. [2020-01-16 19:08:02,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 19:08:02,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7056 transitions. [2020-01-16 19:08:02,650 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7056 transitions. Word has length 28 [2020-01-16 19:08:02,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:02,650 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7056 transitions. [2020-01-16 19:08:02,650 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:02,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7056 transitions. [2020-01-16 19:08:02,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:02,652 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:02,653 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:02,653 INFO L426 AbstractCegarLoop]: === Iteration 643 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:02,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:02,653 INFO L82 PathProgramCache]: Analyzing trace with hash -927473244, now seen corresponding path program 635 times [2020-01-16 19:08:02,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:02,653 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907614663] [2020-01-16 19:08:02,653 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:02,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:03,203 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 19:08:03,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:03,210 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907614663] [2020-01-16 19:08:03,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:03,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:03,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640867174] [2020-01-16 19:08:03,211 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:03,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:03,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:03,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:03,211 INFO L87 Difference]: Start difference. First operand 1580 states and 7056 transitions. Second operand 11 states. [2020-01-16 19:08:03,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:03,408 INFO L93 Difference]: Finished difference Result 3019 states and 11894 transitions. [2020-01-16 19:08:03,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:03,408 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:03,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:03,416 INFO L225 Difference]: With dead ends: 3019 [2020-01-16 19:08:03,416 INFO L226 Difference]: Without dead ends: 2999 [2020-01-16 19:08:03,416 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:03,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2999 states. [2020-01-16 19:08:03,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2999 to 1588. [2020-01-16 19:08:03,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1588 states. [2020-01-16 19:08:03,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 7070 transitions. [2020-01-16 19:08:03,482 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 7070 transitions. Word has length 28 [2020-01-16 19:08:03,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:03,482 INFO L478 AbstractCegarLoop]: Abstraction has 1588 states and 7070 transitions. [2020-01-16 19:08:03,482 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:03,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 7070 transitions. [2020-01-16 19:08:03,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:03,484 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:03,484 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:03,484 INFO L426 AbstractCegarLoop]: === Iteration 644 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:03,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:03,484 INFO L82 PathProgramCache]: Analyzing trace with hash -754225552, now seen corresponding path program 636 times [2020-01-16 19:08:03,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:03,485 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051814333] [2020-01-16 19:08:03,485 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:03,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:04,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:04,020 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051814333] [2020-01-16 19:08:04,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:04,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:04,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524941793] [2020-01-16 19:08:04,021 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:04,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:04,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:04,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:04,021 INFO L87 Difference]: Start difference. First operand 1588 states and 7070 transitions. Second operand 11 states. [2020-01-16 19:08:04,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:04,278 INFO L93 Difference]: Finished difference Result 3016 states and 11881 transitions. [2020-01-16 19:08:04,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:04,279 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:04,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:04,286 INFO L225 Difference]: With dead ends: 3016 [2020-01-16 19:08:04,286 INFO L226 Difference]: Without dead ends: 2984 [2020-01-16 19:08:04,286 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:04,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2984 states. [2020-01-16 19:08:04,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2984 to 1573. [2020-01-16 19:08:04,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:08:04,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7036 transitions. [2020-01-16 19:08:04,352 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7036 transitions. Word has length 28 [2020-01-16 19:08:04,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:04,352 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7036 transitions. [2020-01-16 19:08:04,352 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:04,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7036 transitions. [2020-01-16 19:08:04,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:04,354 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:04,354 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:04,354 INFO L426 AbstractCegarLoop]: === Iteration 645 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:04,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:04,354 INFO L82 PathProgramCache]: Analyzing trace with hash -53357456, now seen corresponding path program 637 times [2020-01-16 19:08:04,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:04,355 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696044777] [2020-01-16 19:08:04,355 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:04,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:04,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:04,886 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696044777] [2020-01-16 19:08:04,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:04,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:04,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389060680] [2020-01-16 19:08:04,887 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:04,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:04,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:04,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:04,887 INFO L87 Difference]: Start difference. First operand 1573 states and 7036 transitions. Second operand 11 states. [2020-01-16 19:08:05,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:05,150 INFO L93 Difference]: Finished difference Result 3005 states and 11873 transitions. [2020-01-16 19:08:05,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:05,151 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:05,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:05,158 INFO L225 Difference]: With dead ends: 3005 [2020-01-16 19:08:05,158 INFO L226 Difference]: Without dead ends: 2989 [2020-01-16 19:08:05,158 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:05,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2020-01-16 19:08:05,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 1585. [2020-01-16 19:08:05,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 19:08:05,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7070 transitions. [2020-01-16 19:08:05,224 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7070 transitions. Word has length 28 [2020-01-16 19:08:05,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:05,224 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7070 transitions. [2020-01-16 19:08:05,224 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:05,225 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7070 transitions. [2020-01-16 19:08:05,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:05,227 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:05,227 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:05,227 INFO L426 AbstractCegarLoop]: === Iteration 646 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:05,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:05,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1436047540, now seen corresponding path program 638 times [2020-01-16 19:08:05,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:05,227 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790310778] [2020-01-16 19:08:05,227 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:05,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:05,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:05,777 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790310778] [2020-01-16 19:08:05,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:05,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:05,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630433569] [2020-01-16 19:08:05,777 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:05,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:05,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:05,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:05,777 INFO L87 Difference]: Start difference. First operand 1585 states and 7070 transitions. Second operand 11 states. [2020-01-16 19:08:05,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:05,988 INFO L93 Difference]: Finished difference Result 3007 states and 11871 transitions. [2020-01-16 19:08:05,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:05,988 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:05,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:05,995 INFO L225 Difference]: With dead ends: 3007 [2020-01-16 19:08:05,995 INFO L226 Difference]: Without dead ends: 2983 [2020-01-16 19:08:05,995 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:06,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2983 states. [2020-01-16 19:08:06,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2983 to 1579. [2020-01-16 19:08:06,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 19:08:06,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7053 transitions. [2020-01-16 19:08:06,061 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7053 transitions. Word has length 28 [2020-01-16 19:08:06,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:06,061 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7053 transitions. [2020-01-16 19:08:06,061 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:06,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7053 transitions. [2020-01-16 19:08:06,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:06,064 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:06,064 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:06,064 INFO L426 AbstractCegarLoop]: === Iteration 647 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:06,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:06,064 INFO L82 PathProgramCache]: Analyzing trace with hash -588587258, now seen corresponding path program 639 times [2020-01-16 19:08:06,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:06,064 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65974183] [2020-01-16 19:08:06,064 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:06,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:06,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:06,609 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65974183] [2020-01-16 19:08:06,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:06,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:06,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048869323] [2020-01-16 19:08:06,609 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:06,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:06,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:06,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:06,609 INFO L87 Difference]: Start difference. First operand 1579 states and 7053 transitions. Second operand 11 states. [2020-01-16 19:08:06,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:06,868 INFO L93 Difference]: Finished difference Result 3004 states and 11865 transitions. [2020-01-16 19:08:06,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:06,869 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:06,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:06,876 INFO L225 Difference]: With dead ends: 3004 [2020-01-16 19:08:06,877 INFO L226 Difference]: Without dead ends: 2988 [2020-01-16 19:08:06,877 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:06,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2988 states. [2020-01-16 19:08:06,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2988 to 1585. [2020-01-16 19:08:06,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 19:08:06,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7064 transitions. [2020-01-16 19:08:06,944 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7064 transitions. Word has length 28 [2020-01-16 19:08:06,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:06,945 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7064 transitions. [2020-01-16 19:08:06,945 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:06,945 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7064 transitions. [2020-01-16 19:08:06,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:06,947 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:06,947 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:06,947 INFO L426 AbstractCegarLoop]: === Iteration 648 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:06,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:06,947 INFO L82 PathProgramCache]: Analyzing trace with hash 329362932, now seen corresponding path program 640 times [2020-01-16 19:08:06,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:06,947 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460616123] [2020-01-16 19:08:06,948 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:06,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:07,497 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 19:08:07,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:07,504 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460616123] [2020-01-16 19:08:07,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:07,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:07,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036981454] [2020-01-16 19:08:07,505 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:07,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:07,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:07,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:07,505 INFO L87 Difference]: Start difference. First operand 1585 states and 7064 transitions. Second operand 11 states. [2020-01-16 19:08:07,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:07,706 INFO L93 Difference]: Finished difference Result 3005 states and 11861 transitions. [2020-01-16 19:08:07,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:07,706 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:07,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:07,714 INFO L225 Difference]: With dead ends: 3005 [2020-01-16 19:08:07,714 INFO L226 Difference]: Without dead ends: 2982 [2020-01-16 19:08:07,714 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:07,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2982 states. [2020-01-16 19:08:07,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2982 to 1579. [2020-01-16 19:08:07,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 19:08:07,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7047 transitions. [2020-01-16 19:08:07,780 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7047 transitions. Word has length 28 [2020-01-16 19:08:07,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:07,780 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7047 transitions. [2020-01-16 19:08:07,781 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:07,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7047 transitions. [2020-01-16 19:08:07,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:07,783 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:07,783 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:07,783 INFO L426 AbstractCegarLoop]: === Iteration 649 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:07,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:07,783 INFO L82 PathProgramCache]: Analyzing trace with hash -172267642, now seen corresponding path program 641 times [2020-01-16 19:08:07,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:07,783 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747516409] [2020-01-16 19:08:07,783 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:07,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:08,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:08,323 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747516409] [2020-01-16 19:08:08,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:08,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:08,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577829007] [2020-01-16 19:08:08,323 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:08,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:08,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:08,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:08,324 INFO L87 Difference]: Start difference. First operand 1579 states and 7047 transitions. Second operand 11 states. [2020-01-16 19:08:08,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:08,525 INFO L93 Difference]: Finished difference Result 3009 states and 11870 transitions. [2020-01-16 19:08:08,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:08,526 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:08,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:08,534 INFO L225 Difference]: With dead ends: 3009 [2020-01-16 19:08:08,534 INFO L226 Difference]: Without dead ends: 2991 [2020-01-16 19:08:08,534 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:08,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2991 states. [2020-01-16 19:08:08,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2991 to 1586. [2020-01-16 19:08:08,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1586 states. [2020-01-16 19:08:08,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 7060 transitions. [2020-01-16 19:08:08,602 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 7060 transitions. Word has length 28 [2020-01-16 19:08:08,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:08,602 INFO L478 AbstractCegarLoop]: Abstraction has 1586 states and 7060 transitions. [2020-01-16 19:08:08,602 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:08,602 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 7060 transitions. [2020-01-16 19:08:08,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:08,604 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:08,604 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:08,604 INFO L426 AbstractCegarLoop]: === Iteration 650 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:08,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:08,605 INFO L82 PathProgramCache]: Analyzing trace with hash -743722448, now seen corresponding path program 642 times [2020-01-16 19:08:08,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:08,605 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49509923] [2020-01-16 19:08:08,605 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:08,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:09,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:09,144 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49509923] [2020-01-16 19:08:09,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:09,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:09,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029891956] [2020-01-16 19:08:09,144 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:09,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:09,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:09,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:09,145 INFO L87 Difference]: Start difference. First operand 1586 states and 7060 transitions. Second operand 11 states. [2020-01-16 19:08:09,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:09,341 INFO L93 Difference]: Finished difference Result 3008 states and 11861 transitions. [2020-01-16 19:08:09,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:09,342 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:09,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:09,349 INFO L225 Difference]: With dead ends: 3008 [2020-01-16 19:08:09,349 INFO L226 Difference]: Without dead ends: 2978 [2020-01-16 19:08:09,350 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:09,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2978 states. [2020-01-16 19:08:09,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2978 to 1573. [2020-01-16 19:08:09,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:08:09,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7030 transitions. [2020-01-16 19:08:09,437 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7030 transitions. Word has length 28 [2020-01-16 19:08:09,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:09,437 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7030 transitions. [2020-01-16 19:08:09,437 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:09,437 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7030 transitions. [2020-01-16 19:08:09,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:09,440 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:09,440 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:09,440 INFO L426 AbstractCegarLoop]: === Iteration 651 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:09,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:09,440 INFO L82 PathProgramCache]: Analyzing trace with hash 701848146, now seen corresponding path program 643 times [2020-01-16 19:08:09,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:09,440 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247334834] [2020-01-16 19:08:09,440 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:09,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:10,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:10,000 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247334834] [2020-01-16 19:08:10,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:10,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:10,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190509263] [2020-01-16 19:08:10,000 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:10,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:10,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:10,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:10,001 INFO L87 Difference]: Start difference. First operand 1573 states and 7030 transitions. Second operand 11 states. [2020-01-16 19:08:10,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:10,226 INFO L93 Difference]: Finished difference Result 3031 states and 11921 transitions. [2020-01-16 19:08:10,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:10,227 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:10,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:10,234 INFO L225 Difference]: With dead ends: 3031 [2020-01-16 19:08:10,234 INFO L226 Difference]: Without dead ends: 3011 [2020-01-16 19:08:10,234 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:10,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3011 states. [2020-01-16 19:08:10,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3011 to 1593. [2020-01-16 19:08:10,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1593 states. [2020-01-16 19:08:10,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1593 states to 1593 states and 7080 transitions. [2020-01-16 19:08:10,302 INFO L78 Accepts]: Start accepts. Automaton has 1593 states and 7080 transitions. Word has length 28 [2020-01-16 19:08:10,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:10,303 INFO L478 AbstractCegarLoop]: Abstraction has 1593 states and 7080 transitions. [2020-01-16 19:08:10,303 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:10,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1593 states and 7080 transitions. [2020-01-16 19:08:10,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:10,305 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:10,305 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:10,305 INFO L426 AbstractCegarLoop]: === Iteration 652 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:10,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:10,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1446550644, now seen corresponding path program 644 times [2020-01-16 19:08:10,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:10,305 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105634588] [2020-01-16 19:08:10,306 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:10,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:10,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:10,861 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105634588] [2020-01-16 19:08:10,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:10,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:10,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674314110] [2020-01-16 19:08:10,861 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:10,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:10,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:10,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:10,862 INFO L87 Difference]: Start difference. First operand 1593 states and 7080 transitions. Second operand 11 states. [2020-01-16 19:08:11,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:11,071 INFO L93 Difference]: Finished difference Result 3029 states and 11909 transitions. [2020-01-16 19:08:11,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:11,071 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:11,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:11,078 INFO L225 Difference]: With dead ends: 3029 [2020-01-16 19:08:11,078 INFO L226 Difference]: Without dead ends: 3001 [2020-01-16 19:08:11,079 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:11,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3001 states. [2020-01-16 19:08:11,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3001 to 1583. [2020-01-16 19:08:11,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 19:08:11,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7054 transitions. [2020-01-16 19:08:11,147 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7054 transitions. Word has length 28 [2020-01-16 19:08:11,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:11,147 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7054 transitions. [2020-01-16 19:08:11,147 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:11,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7054 transitions. [2020-01-16 19:08:11,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:11,149 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:11,149 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:11,149 INFO L426 AbstractCegarLoop]: === Iteration 653 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:11,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:11,149 INFO L82 PathProgramCache]: Analyzing trace with hash 166618344, now seen corresponding path program 645 times [2020-01-16 19:08:11,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:11,150 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040309872] [2020-01-16 19:08:11,150 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:11,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:11,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:11,713 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040309872] [2020-01-16 19:08:11,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:11,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:11,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647702058] [2020-01-16 19:08:11,713 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:11,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:11,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:11,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:11,714 INFO L87 Difference]: Start difference. First operand 1583 states and 7054 transitions. Second operand 11 states. [2020-01-16 19:08:11,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:11,882 INFO L93 Difference]: Finished difference Result 3028 states and 11906 transitions. [2020-01-16 19:08:11,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:11,882 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:11,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:11,890 INFO L225 Difference]: With dead ends: 3028 [2020-01-16 19:08:11,890 INFO L226 Difference]: Without dead ends: 3008 [2020-01-16 19:08:11,890 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:11,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2020-01-16 19:08:11,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 1591. [2020-01-16 19:08:11,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1591 states. [2020-01-16 19:08:11,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1591 states to 1591 states and 7068 transitions. [2020-01-16 19:08:11,956 INFO L78 Accepts]: Start accepts. Automaton has 1591 states and 7068 transitions. Word has length 28 [2020-01-16 19:08:11,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:11,956 INFO L478 AbstractCegarLoop]: Abstraction has 1591 states and 7068 transitions. [2020-01-16 19:08:11,956 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:11,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1591 states and 7068 transitions. [2020-01-16 19:08:11,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:11,958 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:11,958 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:11,958 INFO L426 AbstractCegarLoop]: === Iteration 654 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:11,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:11,958 INFO L82 PathProgramCache]: Analyzing trace with hash 339866036, now seen corresponding path program 646 times [2020-01-16 19:08:11,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:11,959 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979636610] [2020-01-16 19:08:11,959 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:11,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:12,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:12,512 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979636610] [2020-01-16 19:08:12,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:12,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:12,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228700831] [2020-01-16 19:08:12,513 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:12,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:12,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:12,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:12,513 INFO L87 Difference]: Start difference. First operand 1591 states and 7068 transitions. Second operand 11 states. [2020-01-16 19:08:12,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:12,709 INFO L93 Difference]: Finished difference Result 3025 states and 11893 transitions. [2020-01-16 19:08:12,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:12,710 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:12,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:12,717 INFO L225 Difference]: With dead ends: 3025 [2020-01-16 19:08:12,717 INFO L226 Difference]: Without dead ends: 3000 [2020-01-16 19:08:12,717 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:12,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3000 states. [2020-01-16 19:08:12,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3000 to 1583. [2020-01-16 19:08:12,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 19:08:12,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7046 transitions. [2020-01-16 19:08:12,783 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7046 transitions. Word has length 28 [2020-01-16 19:08:12,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:12,783 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7046 transitions. [2020-01-16 19:08:12,783 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:12,783 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7046 transitions. [2020-01-16 19:08:12,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:12,785 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:12,785 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:12,785 INFO L426 AbstractCegarLoop]: === Iteration 655 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:12,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:12,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1772705496, now seen corresponding path program 647 times [2020-01-16 19:08:12,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:12,786 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384284260] [2020-01-16 19:08:12,786 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:12,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:13,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:13,336 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384284260] [2020-01-16 19:08:13,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:13,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:13,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857746146] [2020-01-16 19:08:13,337 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:13,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:13,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:13,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:13,337 INFO L87 Difference]: Start difference. First operand 1583 states and 7046 transitions. Second operand 11 states. [2020-01-16 19:08:13,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:13,504 INFO L93 Difference]: Finished difference Result 3023 states and 11890 transitions. [2020-01-16 19:08:13,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:13,505 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:13,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:13,512 INFO L225 Difference]: With dead ends: 3023 [2020-01-16 19:08:13,512 INFO L226 Difference]: Without dead ends: 3005 [2020-01-16 19:08:13,512 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:13,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3005 states. [2020-01-16 19:08:13,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3005 to 1590. [2020-01-16 19:08:13,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1590 states. [2020-01-16 19:08:13,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 7059 transitions. [2020-01-16 19:08:13,580 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 7059 transitions. Word has length 28 [2020-01-16 19:08:13,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:13,581 INFO L478 AbstractCegarLoop]: Abstraction has 1590 states and 7059 transitions. [2020-01-16 19:08:13,581 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:13,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 7059 transitions. [2020-01-16 19:08:13,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:13,583 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:13,583 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:13,583 INFO L426 AbstractCegarLoop]: === Iteration 656 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:13,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:13,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1950806994, now seen corresponding path program 648 times [2020-01-16 19:08:13,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:13,583 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005215625] [2020-01-16 19:08:13,584 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:13,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:14,122 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 19:08:14,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:14,129 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005215625] [2020-01-16 19:08:14,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:14,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:14,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243071322] [2020-01-16 19:08:14,129 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:14,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:14,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:14,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:14,130 INFO L87 Difference]: Start difference. First operand 1590 states and 7059 transitions. Second operand 11 states. [2020-01-16 19:08:14,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:14,311 INFO L93 Difference]: Finished difference Result 3022 states and 11881 transitions. [2020-01-16 19:08:14,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:14,312 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:14,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:14,319 INFO L225 Difference]: With dead ends: 3022 [2020-01-16 19:08:14,319 INFO L226 Difference]: Without dead ends: 2978 [2020-01-16 19:08:14,320 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:14,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2978 states. [2020-01-16 19:08:14,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2978 to 1563. [2020-01-16 19:08:14,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 19:08:14,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7004 transitions. [2020-01-16 19:08:14,387 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7004 transitions. Word has length 28 [2020-01-16 19:08:14,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:14,387 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7004 transitions. [2020-01-16 19:08:14,387 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:14,387 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7004 transitions. [2020-01-16 19:08:14,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:14,390 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:14,390 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:14,390 INFO L426 AbstractCegarLoop]: === Iteration 657 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:14,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:14,390 INFO L82 PathProgramCache]: Analyzing trace with hash 325182790, now seen corresponding path program 649 times [2020-01-16 19:08:14,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:14,390 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500304470] [2020-01-16 19:08:14,390 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:14,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:14,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:14,906 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500304470] [2020-01-16 19:08:14,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:14,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:14,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546008807] [2020-01-16 19:08:14,907 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:14,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:14,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:14,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:14,907 INFO L87 Difference]: Start difference. First operand 1563 states and 7004 transitions. Second operand 11 states. [2020-01-16 19:08:15,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:15,076 INFO L93 Difference]: Finished difference Result 2974 states and 11781 transitions. [2020-01-16 19:08:15,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:15,076 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:15,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:15,084 INFO L225 Difference]: With dead ends: 2974 [2020-01-16 19:08:15,084 INFO L226 Difference]: Without dead ends: 2958 [2020-01-16 19:08:15,084 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:15,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2958 states. [2020-01-16 19:08:15,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2958 to 1580. [2020-01-16 19:08:15,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 19:08:15,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7058 transitions. [2020-01-16 19:08:15,151 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7058 transitions. Word has length 28 [2020-01-16 19:08:15,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:15,152 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7058 transitions. [2020-01-16 19:08:15,152 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:15,152 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7058 transitions. [2020-01-16 19:08:15,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:15,154 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:15,154 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:15,154 INFO L426 AbstractCegarLoop]: === Iteration 658 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:15,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:15,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1069885288, now seen corresponding path program 650 times [2020-01-16 19:08:15,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:15,154 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569316300] [2020-01-16 19:08:15,155 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:15,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:15,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:15,734 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569316300] [2020-01-16 19:08:15,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:15,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:15,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445512386] [2020-01-16 19:08:15,734 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:15,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:15,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:15,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:15,734 INFO L87 Difference]: Start difference. First operand 1580 states and 7058 transitions. Second operand 11 states. [2020-01-16 19:08:15,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:15,865 INFO L93 Difference]: Finished difference Result 2978 states and 11782 transitions. [2020-01-16 19:08:15,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:15,865 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:15,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:15,873 INFO L225 Difference]: With dead ends: 2978 [2020-01-16 19:08:15,873 INFO L226 Difference]: Without dead ends: 2951 [2020-01-16 19:08:15,874 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:15,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2020-01-16 19:08:15,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 1573. [2020-01-16 19:08:15,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:08:15,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7040 transitions. [2020-01-16 19:08:15,941 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7040 transitions. Word has length 28 [2020-01-16 19:08:15,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:15,941 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7040 transitions. [2020-01-16 19:08:15,941 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:15,942 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7040 transitions. [2020-01-16 19:08:15,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:15,944 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:15,944 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:15,944 INFO L426 AbstractCegarLoop]: === Iteration 659 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:15,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:15,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1820987970, now seen corresponding path program 651 times [2020-01-16 19:08:15,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:15,944 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964239432] [2020-01-16 19:08:15,944 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:15,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:16,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:16,459 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964239432] [2020-01-16 19:08:16,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:16,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:16,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013359540] [2020-01-16 19:08:16,460 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:16,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:16,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:16,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:16,460 INFO L87 Difference]: Start difference. First operand 1573 states and 7040 transitions. Second operand 11 states. [2020-01-16 19:08:16,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:16,655 INFO L93 Difference]: Finished difference Result 2965 states and 11757 transitions. [2020-01-16 19:08:16,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:16,655 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:16,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:16,663 INFO L225 Difference]: With dead ends: 2965 [2020-01-16 19:08:16,663 INFO L226 Difference]: Without dead ends: 2949 [2020-01-16 19:08:16,663 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:16,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2949 states. [2020-01-16 19:08:16,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2949 to 1577. [2020-01-16 19:08:16,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 19:08:16,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7047 transitions. [2020-01-16 19:08:16,730 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7047 transitions. Word has length 28 [2020-01-16 19:08:16,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:16,730 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7047 transitions. [2020-01-16 19:08:16,730 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:16,730 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7047 transitions. [2020-01-16 19:08:16,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:16,733 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:16,733 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:16,733 INFO L426 AbstractCegarLoop]: === Iteration 660 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:16,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:16,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1902524520, now seen corresponding path program 652 times [2020-01-16 19:08:16,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:16,733 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276803143] [2020-01-16 19:08:16,733 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:16,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:17,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:17,252 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276803143] [2020-01-16 19:08:17,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:17,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:17,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426667209] [2020-01-16 19:08:17,252 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:17,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:17,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:17,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:17,253 INFO L87 Difference]: Start difference. First operand 1577 states and 7047 transitions. Second operand 11 states. [2020-01-16 19:08:17,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:17,427 INFO L93 Difference]: Finished difference Result 2963 states and 11749 transitions. [2020-01-16 19:08:17,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:17,427 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:17,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:17,434 INFO L225 Difference]: With dead ends: 2963 [2020-01-16 19:08:17,434 INFO L226 Difference]: Without dead ends: 2945 [2020-01-16 19:08:17,435 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:17,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2945 states. [2020-01-16 19:08:17,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2945 to 1573. [2020-01-16 19:08:17,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:08:17,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7036 transitions. [2020-01-16 19:08:17,502 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7036 transitions. Word has length 28 [2020-01-16 19:08:17,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:17,502 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7036 transitions. [2020-01-16 19:08:17,502 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:17,502 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7036 transitions. [2020-01-16 19:08:17,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:17,504 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:17,504 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:17,504 INFO L426 AbstractCegarLoop]: === Iteration 661 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:17,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:17,505 INFO L82 PathProgramCache]: Analyzing trace with hash 534655486, now seen corresponding path program 653 times [2020-01-16 19:08:17,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:17,505 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925795819] [2020-01-16 19:08:17,505 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:17,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:18,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:18,021 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925795819] [2020-01-16 19:08:18,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:18,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:18,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335994715] [2020-01-16 19:08:18,021 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:18,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:18,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:18,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:18,022 INFO L87 Difference]: Start difference. First operand 1573 states and 7036 transitions. Second operand 11 states. [2020-01-16 19:08:18,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:18,154 INFO L93 Difference]: Finished difference Result 2974 states and 11769 transitions. [2020-01-16 19:08:18,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:18,155 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:18,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:18,162 INFO L225 Difference]: With dead ends: 2974 [2020-01-16 19:08:18,162 INFO L226 Difference]: Without dead ends: 2954 [2020-01-16 19:08:18,162 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:18,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2020-01-16 19:08:18,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 1578. [2020-01-16 19:08:18,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 19:08:18,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7044 transitions. [2020-01-16 19:08:18,228 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7044 transitions. Word has length 28 [2020-01-16 19:08:18,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:18,228 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7044 transitions. [2020-01-16 19:08:18,228 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:18,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7044 transitions. [2020-01-16 19:08:18,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:18,231 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:18,231 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:18,231 INFO L426 AbstractCegarLoop]: === Iteration 662 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:18,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:18,231 INFO L82 PathProgramCache]: Analyzing trace with hash -781501818, now seen corresponding path program 654 times [2020-01-16 19:08:18,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:18,231 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113330380] [2020-01-16 19:08:18,231 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:18,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:18,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:18,726 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113330380] [2020-01-16 19:08:18,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:18,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:18,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538555775] [2020-01-16 19:08:18,726 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:18,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:18,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:18,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:18,727 INFO L87 Difference]: Start difference. First operand 1578 states and 7044 transitions. Second operand 11 states. [2020-01-16 19:08:18,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:18,890 INFO L93 Difference]: Finished difference Result 2968 states and 11753 transitions. [2020-01-16 19:08:18,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:18,891 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:18,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:18,898 INFO L225 Difference]: With dead ends: 2968 [2020-01-16 19:08:18,899 INFO L226 Difference]: Without dead ends: 2944 [2020-01-16 19:08:18,899 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:18,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2944 states. [2020-01-16 19:08:18,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2944 to 1568. [2020-01-16 19:08:18,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 19:08:18,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7022 transitions. [2020-01-16 19:08:18,965 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7022 transitions. Word has length 28 [2020-01-16 19:08:18,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:18,965 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7022 transitions. [2020-01-16 19:08:18,965 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:18,965 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7022 transitions. [2020-01-16 19:08:18,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:18,967 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:18,967 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:18,968 INFO L426 AbstractCegarLoop]: === Iteration 663 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:18,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:18,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1419274378, now seen corresponding path program 655 times [2020-01-16 19:08:18,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:18,968 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482066207] [2020-01-16 19:08:18,968 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:18,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:19,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:19,496 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482066207] [2020-01-16 19:08:19,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:19,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:19,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411416430] [2020-01-16 19:08:19,497 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:19,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:19,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:19,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:19,497 INFO L87 Difference]: Start difference. First operand 1568 states and 7022 transitions. Second operand 11 states. [2020-01-16 19:08:19,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:19,677 INFO L93 Difference]: Finished difference Result 2984 states and 11805 transitions. [2020-01-16 19:08:19,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:19,677 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:19,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:19,684 INFO L225 Difference]: With dead ends: 2984 [2020-01-16 19:08:19,684 INFO L226 Difference]: Without dead ends: 2968 [2020-01-16 19:08:19,685 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:19,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2968 states. [2020-01-16 19:08:19,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2968 to 1582. [2020-01-16 19:08:19,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 19:08:19,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7061 transitions. [2020-01-16 19:08:19,753 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7061 transitions. Word has length 28 [2020-01-16 19:08:19,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:19,753 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7061 transitions. [2020-01-16 19:08:19,753 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:19,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7061 transitions. [2020-01-16 19:08:19,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:19,755 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:19,755 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:19,756 INFO L426 AbstractCegarLoop]: === Iteration 664 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:19,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:19,756 INFO L82 PathProgramCache]: Analyzing trace with hash -2130990420, now seen corresponding path program 656 times [2020-01-16 19:08:19,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:19,756 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679309202] [2020-01-16 19:08:19,756 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:19,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:20,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:20,296 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679309202] [2020-01-16 19:08:20,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:20,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:20,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453902378] [2020-01-16 19:08:20,297 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:20,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:20,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:20,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:20,297 INFO L87 Difference]: Start difference. First operand 1582 states and 7061 transitions. Second operand 11 states. [2020-01-16 19:08:20,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:20,435 INFO L93 Difference]: Finished difference Result 2988 states and 11806 transitions. [2020-01-16 19:08:20,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:20,436 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:20,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:20,443 INFO L225 Difference]: With dead ends: 2988 [2020-01-16 19:08:20,443 INFO L226 Difference]: Without dead ends: 2961 [2020-01-16 19:08:20,443 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:20,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2020-01-16 19:08:20,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 1575. [2020-01-16 19:08:20,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:08:20,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7041 transitions. [2020-01-16 19:08:20,510 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7041 transitions. Word has length 28 [2020-01-16 19:08:20,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:20,510 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7041 transitions. [2020-01-16 19:08:20,510 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:20,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7041 transitions. [2020-01-16 19:08:20,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:20,512 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:20,512 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:20,512 INFO L426 AbstractCegarLoop]: === Iteration 665 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:20,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:20,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1799981762, now seen corresponding path program 657 times [2020-01-16 19:08:20,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:20,513 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955596766] [2020-01-16 19:08:20,513 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:20,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:21,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:21,044 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955596766] [2020-01-16 19:08:21,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:21,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:21,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862535887] [2020-01-16 19:08:21,045 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:21,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:21,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:21,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:21,045 INFO L87 Difference]: Start difference. First operand 1575 states and 7041 transitions. Second operand 11 states. [2020-01-16 19:08:21,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:21,218 INFO L93 Difference]: Finished difference Result 2980 states and 11791 transitions. [2020-01-16 19:08:21,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:21,219 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:21,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:21,226 INFO L225 Difference]: With dead ends: 2980 [2020-01-16 19:08:21,226 INFO L226 Difference]: Without dead ends: 2964 [2020-01-16 19:08:21,226 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:21,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2964 states. [2020-01-16 19:08:21,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2964 to 1581. [2020-01-16 19:08:21,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 19:08:21,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7052 transitions. [2020-01-16 19:08:21,314 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7052 transitions. Word has length 28 [2020-01-16 19:08:21,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:21,314 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7052 transitions. [2020-01-16 19:08:21,314 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:21,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7052 transitions. [2020-01-16 19:08:21,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:21,317 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:21,317 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:21,317 INFO L426 AbstractCegarLoop]: === Iteration 666 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:21,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:21,317 INFO L82 PathProgramCache]: Analyzing trace with hash -882031572, now seen corresponding path program 658 times [2020-01-16 19:08:21,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:21,318 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896773040] [2020-01-16 19:08:21,318 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:21,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:21,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:21,847 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896773040] [2020-01-16 19:08:21,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:21,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:21,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492954110] [2020-01-16 19:08:21,848 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:21,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:21,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:21,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:21,848 INFO L87 Difference]: Start difference. First operand 1581 states and 7052 transitions. Second operand 11 states. [2020-01-16 19:08:22,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:22,028 INFO L93 Difference]: Finished difference Result 2981 states and 11787 transitions. [2020-01-16 19:08:22,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:22,029 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:22,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:22,036 INFO L225 Difference]: With dead ends: 2981 [2020-01-16 19:08:22,036 INFO L226 Difference]: Without dead ends: 2958 [2020-01-16 19:08:22,036 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:22,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2958 states. [2020-01-16 19:08:22,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2958 to 1575. [2020-01-16 19:08:22,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:08:22,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7035 transitions. [2020-01-16 19:08:22,104 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7035 transitions. Word has length 28 [2020-01-16 19:08:22,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:22,104 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7035 transitions. [2020-01-16 19:08:22,104 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:22,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7035 transitions. [2020-01-16 19:08:22,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:22,106 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:22,106 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:22,107 INFO L426 AbstractCegarLoop]: === Iteration 667 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:22,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:22,107 INFO L82 PathProgramCache]: Analyzing trace with hash 555661694, now seen corresponding path program 659 times [2020-01-16 19:08:22,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:22,107 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084927679] [2020-01-16 19:08:22,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:22,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:22,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:22,632 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084927679] [2020-01-16 19:08:22,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:22,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:22,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072333061] [2020-01-16 19:08:22,633 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:22,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:22,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:22,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:22,633 INFO L87 Difference]: Start difference. First operand 1575 states and 7035 transitions. Second operand 11 states. [2020-01-16 19:08:22,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:22,770 INFO L93 Difference]: Finished difference Result 2990 states and 11804 transitions. [2020-01-16 19:08:22,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:22,770 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:22,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:22,777 INFO L225 Difference]: With dead ends: 2990 [2020-01-16 19:08:22,777 INFO L226 Difference]: Without dead ends: 2970 [2020-01-16 19:08:22,778 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:22,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2970 states. [2020-01-16 19:08:22,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2970 to 1583. [2020-01-16 19:08:22,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 19:08:22,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7049 transitions. [2020-01-16 19:08:22,846 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7049 transitions. Word has length 28 [2020-01-16 19:08:22,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:22,846 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7049 transitions. [2020-01-16 19:08:22,846 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:22,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7049 transitions. [2020-01-16 19:08:22,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:22,849 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:22,849 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:22,849 INFO L426 AbstractCegarLoop]: === Iteration 668 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:22,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:22,849 INFO L82 PathProgramCache]: Analyzing trace with hash 728909386, now seen corresponding path program 660 times [2020-01-16 19:08:22,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:22,849 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100483380] [2020-01-16 19:08:22,849 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:22,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:23,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:23,382 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100483380] [2020-01-16 19:08:23,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:23,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:23,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465851398] [2020-01-16 19:08:23,383 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:23,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:23,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:23,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:23,383 INFO L87 Difference]: Start difference. First operand 1583 states and 7049 transitions. Second operand 11 states. [2020-01-16 19:08:23,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:23,563 INFO L93 Difference]: Finished difference Result 2987 states and 11791 transitions. [2020-01-16 19:08:23,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:23,563 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:23,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:23,570 INFO L225 Difference]: With dead ends: 2987 [2020-01-16 19:08:23,571 INFO L226 Difference]: Without dead ends: 2955 [2020-01-16 19:08:23,571 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:23,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2955 states. [2020-01-16 19:08:23,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2955 to 1568. [2020-01-16 19:08:23,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 19:08:23,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7017 transitions. [2020-01-16 19:08:23,638 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7017 transitions. Word has length 28 [2020-01-16 19:08:23,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:23,638 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7017 transitions. [2020-01-16 19:08:23,638 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:23,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7017 transitions. [2020-01-16 19:08:23,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:23,640 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:23,640 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:23,640 INFO L426 AbstractCegarLoop]: === Iteration 669 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:23,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:23,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1461286794, now seen corresponding path program 661 times [2020-01-16 19:08:23,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:23,641 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545359870] [2020-01-16 19:08:23,641 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:23,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:24,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:24,154 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545359870] [2020-01-16 19:08:24,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:24,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:24,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916760854] [2020-01-16 19:08:24,155 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:24,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:24,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:24,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:24,155 INFO L87 Difference]: Start difference. First operand 1568 states and 7017 transitions. Second operand 11 states. [2020-01-16 19:08:24,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:24,334 INFO L93 Difference]: Finished difference Result 2959 states and 11740 transitions. [2020-01-16 19:08:24,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:24,334 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:24,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:24,342 INFO L225 Difference]: With dead ends: 2959 [2020-01-16 19:08:24,342 INFO L226 Difference]: Without dead ends: 2943 [2020-01-16 19:08:24,342 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:24,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2943 states. [2020-01-16 19:08:24,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2943 to 1576. [2020-01-16 19:08:24,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 19:08:24,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7039 transitions. [2020-01-16 19:08:24,410 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7039 transitions. Word has length 28 [2020-01-16 19:08:24,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:24,410 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7039 transitions. [2020-01-16 19:08:24,410 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:24,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7039 transitions. [2020-01-16 19:08:24,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:24,412 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:24,412 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:24,413 INFO L426 AbstractCegarLoop]: === Iteration 670 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:24,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:24,413 INFO L82 PathProgramCache]: Analyzing trace with hash 889831988, now seen corresponding path program 662 times [2020-01-16 19:08:24,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:24,413 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698751100] [2020-01-16 19:08:24,413 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:24,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:24,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:24,930 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698751100] [2020-01-16 19:08:24,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:24,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:24,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846283109] [2020-01-16 19:08:24,931 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:24,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:24,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:24,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:24,931 INFO L87 Difference]: Start difference. First operand 1576 states and 7039 transitions. Second operand 11 states. [2020-01-16 19:08:25,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:25,132 INFO L93 Difference]: Finished difference Result 2957 states and 11732 transitions. [2020-01-16 19:08:25,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:25,132 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:25,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:25,139 INFO L225 Difference]: With dead ends: 2957 [2020-01-16 19:08:25,139 INFO L226 Difference]: Without dead ends: 2939 [2020-01-16 19:08:25,139 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:25,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2939 states. [2020-01-16 19:08:25,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2939 to 1572. [2020-01-16 19:08:25,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 19:08:25,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7028 transitions. [2020-01-16 19:08:25,207 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7028 transitions. Word has length 28 [2020-01-16 19:08:25,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:25,207 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7028 transitions. [2020-01-16 19:08:25,207 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:25,207 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7028 transitions. [2020-01-16 19:08:25,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:25,210 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:25,210 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:25,210 INFO L426 AbstractCegarLoop]: === Iteration 671 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:25,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:25,210 INFO L82 PathProgramCache]: Analyzing trace with hash 388201414, now seen corresponding path program 663 times [2020-01-16 19:08:25,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:25,210 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422394132] [2020-01-16 19:08:25,210 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:25,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:25,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:25,724 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422394132] [2020-01-16 19:08:25,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:25,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:25,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341317984] [2020-01-16 19:08:25,724 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:25,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:25,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:25,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:25,725 INFO L87 Difference]: Start difference. First operand 1572 states and 7028 transitions. Second operand 11 states. [2020-01-16 19:08:25,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:25,903 INFO L93 Difference]: Finished difference Result 2964 states and 11748 transitions. [2020-01-16 19:08:25,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:25,903 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:25,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:25,910 INFO L225 Difference]: With dead ends: 2964 [2020-01-16 19:08:25,910 INFO L226 Difference]: Without dead ends: 2948 [2020-01-16 19:08:25,910 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:25,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2948 states. [2020-01-16 19:08:25,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2948 to 1578. [2020-01-16 19:08:25,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 19:08:25,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7039 transitions. [2020-01-16 19:08:25,978 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7039 transitions. Word has length 28 [2020-01-16 19:08:25,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:25,978 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7039 transitions. [2020-01-16 19:08:25,978 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:25,978 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7039 transitions. [2020-01-16 19:08:25,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:25,980 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:25,980 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:25,980 INFO L426 AbstractCegarLoop]: === Iteration 672 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:25,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:25,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1306151604, now seen corresponding path program 664 times [2020-01-16 19:08:25,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:25,981 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343517658] [2020-01-16 19:08:25,981 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:25,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:26,509 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 19:08:26,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:26,516 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343517658] [2020-01-16 19:08:26,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:26,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:26,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583472532] [2020-01-16 19:08:26,517 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:26,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:26,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:26,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:26,517 INFO L87 Difference]: Start difference. First operand 1578 states and 7039 transitions. Second operand 11 states. [2020-01-16 19:08:26,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:26,694 INFO L93 Difference]: Finished difference Result 2965 states and 11744 transitions. [2020-01-16 19:08:26,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:26,695 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:26,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:26,702 INFO L225 Difference]: With dead ends: 2965 [2020-01-16 19:08:26,702 INFO L226 Difference]: Without dead ends: 2942 [2020-01-16 19:08:26,702 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:26,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2020-01-16 19:08:26,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 1572. [2020-01-16 19:08:26,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 19:08:26,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7024 transitions. [2020-01-16 19:08:26,769 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7024 transitions. Word has length 28 [2020-01-16 19:08:26,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:26,769 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7024 transitions. [2020-01-16 19:08:26,769 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:26,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7024 transitions. [2020-01-16 19:08:26,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:26,772 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:26,772 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:26,772 INFO L426 AbstractCegarLoop]: === Iteration 673 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:26,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:26,772 INFO L82 PathProgramCache]: Analyzing trace with hash -718483194, now seen corresponding path program 665 times [2020-01-16 19:08:26,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:26,772 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953238095] [2020-01-16 19:08:26,772 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:26,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:27,307 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 19:08:27,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:27,312 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953238095] [2020-01-16 19:08:27,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:27,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:27,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234158140] [2020-01-16 19:08:27,313 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:27,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:27,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:27,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:27,313 INFO L87 Difference]: Start difference. First operand 1572 states and 7024 transitions. Second operand 11 states. [2020-01-16 19:08:27,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:27,495 INFO L93 Difference]: Finished difference Result 2958 states and 11730 transitions. [2020-01-16 19:08:27,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:27,495 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:27,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:27,503 INFO L225 Difference]: With dead ends: 2958 [2020-01-16 19:08:27,503 INFO L226 Difference]: Without dead ends: 2944 [2020-01-16 19:08:27,503 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:27,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2944 states. [2020-01-16 19:08:27,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2944 to 1576. [2020-01-16 19:08:27,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 19:08:27,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7031 transitions. [2020-01-16 19:08:27,570 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7031 transitions. Word has length 28 [2020-01-16 19:08:27,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:27,570 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7031 transitions. [2020-01-16 19:08:27,570 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:27,570 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7031 transitions. [2020-01-16 19:08:27,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:27,572 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:27,572 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:27,573 INFO L426 AbstractCegarLoop]: === Iteration 674 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:27,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:27,573 INFO L82 PathProgramCache]: Analyzing trace with hash 770921802, now seen corresponding path program 666 times [2020-01-16 19:08:27,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:27,573 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717602321] [2020-01-16 19:08:27,573 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:27,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:28,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:28,091 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717602321] [2020-01-16 19:08:28,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:28,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:28,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041904268] [2020-01-16 19:08:28,092 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:28,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:28,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:28,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:28,092 INFO L87 Difference]: Start difference. First operand 1576 states and 7031 transitions. Second operand 11 states. [2020-01-16 19:08:28,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:28,274 INFO L93 Difference]: Finished difference Result 2961 states and 11732 transitions. [2020-01-16 19:08:28,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:28,275 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:28,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:28,282 INFO L225 Difference]: With dead ends: 2961 [2020-01-16 19:08:28,282 INFO L226 Difference]: Without dead ends: 2936 [2020-01-16 19:08:28,282 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:28,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2936 states. [2020-01-16 19:08:28,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2936 to 1568. [2020-01-16 19:08:28,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 19:08:28,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7013 transitions. [2020-01-16 19:08:28,347 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7013 transitions. Word has length 28 [2020-01-16 19:08:28,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:28,347 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7013 transitions. [2020-01-16 19:08:28,348 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:28,348 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7013 transitions. [2020-01-16 19:08:28,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:28,350 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:28,350 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:28,350 INFO L426 AbstractCegarLoop]: === Iteration 675 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:28,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:28,350 INFO L82 PathProgramCache]: Analyzing trace with hash -2078474900, now seen corresponding path program 667 times [2020-01-16 19:08:28,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:28,350 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308340687] [2020-01-16 19:08:28,350 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:28,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:28,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:28,868 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308340687] [2020-01-16 19:08:28,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:28,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:28,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961616189] [2020-01-16 19:08:28,869 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:28,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:28,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:28,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:28,869 INFO L87 Difference]: Start difference. First operand 1568 states and 7013 transitions. Second operand 11 states. [2020-01-16 19:08:29,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:29,009 INFO L93 Difference]: Finished difference Result 2976 states and 11769 transitions. [2020-01-16 19:08:29,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:29,010 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:29,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:29,017 INFO L225 Difference]: With dead ends: 2976 [2020-01-16 19:08:29,017 INFO L226 Difference]: Without dead ends: 2956 [2020-01-16 19:08:29,017 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:29,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2020-01-16 19:08:29,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 1578. [2020-01-16 19:08:29,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 19:08:29,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7039 transitions. [2020-01-16 19:08:29,083 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7039 transitions. Word has length 28 [2020-01-16 19:08:29,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:29,084 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7039 transitions. [2020-01-16 19:08:29,084 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:29,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7039 transitions. [2020-01-16 19:08:29,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:29,086 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:29,086 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:29,086 INFO L426 AbstractCegarLoop]: === Iteration 676 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:29,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:29,086 INFO L82 PathProgramCache]: Analyzing trace with hash 900335092, now seen corresponding path program 668 times [2020-01-16 19:08:29,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:29,086 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232530469] [2020-01-16 19:08:29,087 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:29,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:29,602 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 19:08:29,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:29,609 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232530469] [2020-01-16 19:08:29,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:29,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:29,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538214777] [2020-01-16 19:08:29,609 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:29,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:29,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:29,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:29,610 INFO L87 Difference]: Start difference. First operand 1578 states and 7039 transitions. Second operand 11 states. [2020-01-16 19:08:29,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:29,778 INFO L93 Difference]: Finished difference Result 2970 states and 11753 transitions. [2020-01-16 19:08:29,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:29,779 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:29,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:29,786 INFO L225 Difference]: With dead ends: 2970 [2020-01-16 19:08:29,786 INFO L226 Difference]: Without dead ends: 2951 [2020-01-16 19:08:29,786 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:29,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2020-01-16 19:08:29,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 1573. [2020-01-16 19:08:29,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:08:29,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7026 transitions. [2020-01-16 19:08:29,853 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7026 transitions. Word has length 28 [2020-01-16 19:08:29,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:29,853 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7026 transitions. [2020-01-16 19:08:29,853 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:29,853 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7026 transitions. [2020-01-16 19:08:29,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:29,855 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:29,855 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:29,855 INFO L426 AbstractCegarLoop]: === Iteration 677 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:29,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:29,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1143407016, now seen corresponding path program 669 times [2020-01-16 19:08:29,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:29,856 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30229339] [2020-01-16 19:08:29,856 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:29,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:30,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:30,385 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30229339] [2020-01-16 19:08:30,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:30,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:30,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659008138] [2020-01-16 19:08:30,386 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:30,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:30,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:30,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:30,386 INFO L87 Difference]: Start difference. First operand 1573 states and 7026 transitions. Second operand 11 states. [2020-01-16 19:08:30,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:30,525 INFO L93 Difference]: Finished difference Result 2982 states and 11779 transitions. [2020-01-16 19:08:30,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:30,525 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:30,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:30,533 INFO L225 Difference]: With dead ends: 2982 [2020-01-16 19:08:30,533 INFO L226 Difference]: Without dead ends: 2962 [2020-01-16 19:08:30,533 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:30,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2962 states. [2020-01-16 19:08:30,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2962 to 1581. [2020-01-16 19:08:30,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 19:08:30,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7040 transitions. [2020-01-16 19:08:30,599 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7040 transitions. Word has length 28 [2020-01-16 19:08:30,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:30,599 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7040 transitions. [2020-01-16 19:08:30,599 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:30,600 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7040 transitions. [2020-01-16 19:08:30,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:30,602 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:30,602 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:30,602 INFO L426 AbstractCegarLoop]: === Iteration 678 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:30,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:30,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1316654708, now seen corresponding path program 670 times [2020-01-16 19:08:30,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:30,602 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850130351] [2020-01-16 19:08:30,602 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:30,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:31,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:31,138 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850130351] [2020-01-16 19:08:31,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:31,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:31,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115110113] [2020-01-16 19:08:31,138 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:31,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:31,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:31,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:31,139 INFO L87 Difference]: Start difference. First operand 1581 states and 7040 transitions. Second operand 11 states. [2020-01-16 19:08:31,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:31,307 INFO L93 Difference]: Finished difference Result 2979 states and 11766 transitions. [2020-01-16 19:08:31,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:31,308 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:31,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:31,314 INFO L225 Difference]: With dead ends: 2979 [2020-01-16 19:08:31,315 INFO L226 Difference]: Without dead ends: 2954 [2020-01-16 19:08:31,315 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:31,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2020-01-16 19:08:31,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 1573. [2020-01-16 19:08:31,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:08:31,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7021 transitions. [2020-01-16 19:08:31,381 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7021 transitions. Word has length 28 [2020-01-16 19:08:31,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:31,381 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7021 transitions. [2020-01-16 19:08:31,381 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:31,381 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7021 transitions. [2020-01-16 19:08:31,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:31,383 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:31,383 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:31,383 INFO L426 AbstractCegarLoop]: === Iteration 679 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:31,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:31,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1976046248, now seen corresponding path program 671 times [2020-01-16 19:08:31,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:31,384 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559275252] [2020-01-16 19:08:31,384 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:31,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:31,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:31,910 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559275252] [2020-01-16 19:08:31,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:31,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:31,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004004456] [2020-01-16 19:08:31,910 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:31,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:31,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:31,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:31,911 INFO L87 Difference]: Start difference. First operand 1573 states and 7021 transitions. Second operand 11 states. [2020-01-16 19:08:32,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:32,085 INFO L93 Difference]: Finished difference Result 2966 states and 11741 transitions. [2020-01-16 19:08:32,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:32,086 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:32,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:32,093 INFO L225 Difference]: With dead ends: 2966 [2020-01-16 19:08:32,093 INFO L226 Difference]: Without dead ends: 2952 [2020-01-16 19:08:32,093 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:32,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2020-01-16 19:08:32,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 1577. [2020-01-16 19:08:32,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 19:08:32,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7028 transitions. [2020-01-16 19:08:32,160 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7028 transitions. Word has length 28 [2020-01-16 19:08:32,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:32,160 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7028 transitions. [2020-01-16 19:08:32,160 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:32,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7028 transitions. [2020-01-16 19:08:32,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:32,162 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:32,162 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:32,162 INFO L426 AbstractCegarLoop]: === Iteration 680 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:32,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:32,162 INFO L82 PathProgramCache]: Analyzing trace with hash -829516052, now seen corresponding path program 672 times [2020-01-16 19:08:32,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:32,163 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980594935] [2020-01-16 19:08:32,163 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:32,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:32,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:32,687 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980594935] [2020-01-16 19:08:32,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:32,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:32,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721195767] [2020-01-16 19:08:32,687 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:32,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:32,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:32,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:32,687 INFO L87 Difference]: Start difference. First operand 1577 states and 7028 transitions. Second operand 11 states. [2020-01-16 19:08:32,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:32,863 INFO L93 Difference]: Finished difference Result 2969 states and 11743 transitions. [2020-01-16 19:08:32,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:32,864 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:32,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:32,872 INFO L225 Difference]: With dead ends: 2969 [2020-01-16 19:08:32,872 INFO L226 Difference]: Without dead ends: 2938 [2020-01-16 19:08:32,872 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:32,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2020-01-16 19:08:32,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 1563. [2020-01-16 19:08:32,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 19:08:32,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 6999 transitions. [2020-01-16 19:08:32,938 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 6999 transitions. Word has length 28 [2020-01-16 19:08:32,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:32,938 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 6999 transitions. [2020-01-16 19:08:32,938 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:32,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 6999 transitions. [2020-01-16 19:08:32,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:32,940 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:32,940 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:32,940 INFO L426 AbstractCegarLoop]: === Iteration 681 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:32,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:32,941 INFO L82 PathProgramCache]: Analyzing trace with hash -2033247324, now seen corresponding path program 673 times [2020-01-16 19:08:32,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:32,941 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066526899] [2020-01-16 19:08:32,941 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:32,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:33,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:33,486 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066526899] [2020-01-16 19:08:33,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:33,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:33,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671958283] [2020-01-16 19:08:33,487 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:33,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:33,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:33,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:33,487 INFO L87 Difference]: Start difference. First operand 1563 states and 6999 transitions. Second operand 11 states. [2020-01-16 19:08:33,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:33,671 INFO L93 Difference]: Finished difference Result 2957 states and 11739 transitions. [2020-01-16 19:08:33,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:33,671 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:33,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:33,678 INFO L225 Difference]: With dead ends: 2957 [2020-01-16 19:08:33,678 INFO L226 Difference]: Without dead ends: 2941 [2020-01-16 19:08:33,678 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:33,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2941 states. [2020-01-16 19:08:33,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2941 to 1577. [2020-01-16 19:08:33,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 19:08:33,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7044 transitions. [2020-01-16 19:08:33,745 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7044 transitions. Word has length 28 [2020-01-16 19:08:33,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:33,745 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7044 transitions. [2020-01-16 19:08:33,745 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:33,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7044 transitions. [2020-01-16 19:08:33,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:33,747 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:33,748 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:33,748 INFO L426 AbstractCegarLoop]: === Iteration 682 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:33,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:33,748 INFO L82 PathProgramCache]: Analyzing trace with hash -543842328, now seen corresponding path program 674 times [2020-01-16 19:08:33,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:33,748 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285662082] [2020-01-16 19:08:33,748 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:33,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:34,250 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 19:08:34,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:34,256 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285662082] [2020-01-16 19:08:34,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:34,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:34,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978842966] [2020-01-16 19:08:34,256 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:34,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:34,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:34,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:34,257 INFO L87 Difference]: Start difference. First operand 1577 states and 7044 transitions. Second operand 11 states. [2020-01-16 19:08:34,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:34,469 INFO L93 Difference]: Finished difference Result 2959 states and 11737 transitions. [2020-01-16 19:08:34,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:34,469 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:34,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:34,477 INFO L225 Difference]: With dead ends: 2959 [2020-01-16 19:08:34,477 INFO L226 Difference]: Without dead ends: 2935 [2020-01-16 19:08:34,477 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:34,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2935 states. [2020-01-16 19:08:34,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2935 to 1571. [2020-01-16 19:08:34,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:08:34,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7029 transitions. [2020-01-16 19:08:34,544 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7029 transitions. Word has length 28 [2020-01-16 19:08:34,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:34,544 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7029 transitions. [2020-01-16 19:08:34,544 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:34,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7029 transitions. [2020-01-16 19:08:34,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:34,546 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:34,546 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:34,546 INFO L426 AbstractCegarLoop]: === Iteration 683 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:34,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:34,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1495391746, now seen corresponding path program 675 times [2020-01-16 19:08:34,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:34,547 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35421428] [2020-01-16 19:08:34,547 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:34,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:35,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:35,061 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35421428] [2020-01-16 19:08:35,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:35,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:35,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783696078] [2020-01-16 19:08:35,061 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:35,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:35,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:35,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:35,062 INFO L87 Difference]: Start difference. First operand 1571 states and 7029 transitions. Second operand 11 states. [2020-01-16 19:08:35,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:35,248 INFO L93 Difference]: Finished difference Result 2951 states and 11721 transitions. [2020-01-16 19:08:35,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:35,248 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:35,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:35,256 INFO L225 Difference]: With dead ends: 2951 [2020-01-16 19:08:35,256 INFO L226 Difference]: Without dead ends: 2935 [2020-01-16 19:08:35,256 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:35,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2935 states. [2020-01-16 19:08:35,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2935 to 1575. [2020-01-16 19:08:35,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:08:35,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7036 transitions. [2020-01-16 19:08:35,323 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7036 transitions. Word has length 28 [2020-01-16 19:08:35,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:35,323 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7036 transitions. [2020-01-16 19:08:35,323 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:35,323 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7036 transitions. [2020-01-16 19:08:35,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:35,325 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:35,325 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:35,325 INFO L426 AbstractCegarLoop]: === Iteration 684 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:35,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:35,325 INFO L82 PathProgramCache]: Analyzing trace with hash -2066846552, now seen corresponding path program 676 times [2020-01-16 19:08:35,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:35,326 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076181684] [2020-01-16 19:08:35,326 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:35,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:35,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:35,843 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076181684] [2020-01-16 19:08:35,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:35,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:35,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674418785] [2020-01-16 19:08:35,843 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:35,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:35,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:35,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:35,844 INFO L87 Difference]: Start difference. First operand 1575 states and 7036 transitions. Second operand 11 states. [2020-01-16 19:08:36,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:36,030 INFO L93 Difference]: Finished difference Result 2949 states and 11713 transitions. [2020-01-16 19:08:36,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:36,030 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:36,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:36,037 INFO L225 Difference]: With dead ends: 2949 [2020-01-16 19:08:36,037 INFO L226 Difference]: Without dead ends: 2931 [2020-01-16 19:08:36,038 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:36,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2931 states. [2020-01-16 19:08:36,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2931 to 1571. [2020-01-16 19:08:36,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:08:36,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7025 transitions. [2020-01-16 19:08:36,103 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7025 transitions. Word has length 28 [2020-01-16 19:08:36,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:36,103 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7025 transitions. [2020-01-16 19:08:36,104 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:36,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7025 transitions. [2020-01-16 19:08:36,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:36,106 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:36,106 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:36,106 INFO L426 AbstractCegarLoop]: === Iteration 685 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:36,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:36,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1079072130, now seen corresponding path program 677 times [2020-01-16 19:08:36,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:36,106 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664920776] [2020-01-16 19:08:36,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:36,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:36,621 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 19:08:36,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:36,628 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664920776] [2020-01-16 19:08:36,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:36,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:36,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648897564] [2020-01-16 19:08:36,629 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:36,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:36,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:36,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:36,629 INFO L87 Difference]: Start difference. First operand 1571 states and 7025 transitions. Second operand 11 states. [2020-01-16 19:08:36,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:36,808 INFO L93 Difference]: Finished difference Result 2955 states and 11725 transitions. [2020-01-16 19:08:36,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:36,808 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:36,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:36,815 INFO L225 Difference]: With dead ends: 2955 [2020-01-16 19:08:36,815 INFO L226 Difference]: Without dead ends: 2937 [2020-01-16 19:08:36,815 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:36,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2020-01-16 19:08:36,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 1575. [2020-01-16 19:08:36,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:08:36,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7032 transitions. [2020-01-16 19:08:36,881 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7032 transitions. Word has length 28 [2020-01-16 19:08:36,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:36,882 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7032 transitions. [2020-01-16 19:08:36,882 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:36,882 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7032 transitions. [2020-01-16 19:08:36,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:36,884 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:36,884 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:36,884 INFO L426 AbstractCegarLoop]: === Iteration 686 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:36,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:36,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1155035364, now seen corresponding path program 678 times [2020-01-16 19:08:36,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:36,884 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526270943] [2020-01-16 19:08:36,884 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:36,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:37,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:37,397 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526270943] [2020-01-16 19:08:37,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:37,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:37,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446192032] [2020-01-16 19:08:37,397 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:37,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:37,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:37,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:37,398 INFO L87 Difference]: Start difference. First operand 1575 states and 7032 transitions. Second operand 11 states. [2020-01-16 19:08:37,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:37,609 INFO L93 Difference]: Finished difference Result 2951 states and 11713 transitions. [2020-01-16 19:08:37,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:37,610 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:37,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:37,617 INFO L225 Difference]: With dead ends: 2951 [2020-01-16 19:08:37,618 INFO L226 Difference]: Without dead ends: 2929 [2020-01-16 19:08:37,618 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:37,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2929 states. [2020-01-16 19:08:37,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2929 to 1567. [2020-01-16 19:08:37,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 19:08:37,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7014 transitions. [2020-01-16 19:08:37,689 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7014 transitions. Word has length 28 [2020-01-16 19:08:37,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:37,689 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7014 transitions. [2020-01-16 19:08:37,689 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:37,690 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7014 transitions. [2020-01-16 19:08:37,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:37,692 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:37,692 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:37,692 INFO L426 AbstractCegarLoop]: === Iteration 687 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:37,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:37,692 INFO L82 PathProgramCache]: Analyzing trace with hash -939155736, now seen corresponding path program 679 times [2020-01-16 19:08:37,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:37,693 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650092256] [2020-01-16 19:08:37,693 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:37,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:38,215 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 19:08:38,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:38,222 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650092256] [2020-01-16 19:08:38,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:38,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:38,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014983082] [2020-01-16 19:08:38,222 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:38,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:38,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:38,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:38,222 INFO L87 Difference]: Start difference. First operand 1567 states and 7014 transitions. Second operand 11 states. [2020-01-16 19:08:38,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:38,416 INFO L93 Difference]: Finished difference Result 2967 states and 11764 transitions. [2020-01-16 19:08:38,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:38,416 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:38,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:38,424 INFO L225 Difference]: With dead ends: 2967 [2020-01-16 19:08:38,424 INFO L226 Difference]: Without dead ends: 2951 [2020-01-16 19:08:38,424 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:38,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2020-01-16 19:08:38,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 1579. [2020-01-16 19:08:38,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 19:08:38,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7048 transitions. [2020-01-16 19:08:38,491 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7048 transitions. Word has length 28 [2020-01-16 19:08:38,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:38,491 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7048 transitions. [2020-01-16 19:08:38,491 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:38,491 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7048 transitions. [2020-01-16 19:08:38,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:38,493 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:38,493 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:38,493 INFO L426 AbstractCegarLoop]: === Iteration 688 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:38,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:38,494 INFO L82 PathProgramCache]: Analyzing trace with hash 550249260, now seen corresponding path program 680 times [2020-01-16 19:08:38,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:38,494 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510480715] [2020-01-16 19:08:38,494 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:38,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:39,021 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 19:08:39,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:39,028 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510480715] [2020-01-16 19:08:39,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:39,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:39,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915155542] [2020-01-16 19:08:39,028 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:39,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:39,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:39,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:39,028 INFO L87 Difference]: Start difference. First operand 1579 states and 7048 transitions. Second operand 11 states. [2020-01-16 19:08:39,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:39,291 INFO L93 Difference]: Finished difference Result 2969 states and 11762 transitions. [2020-01-16 19:08:39,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:39,291 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:39,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:39,299 INFO L225 Difference]: With dead ends: 2969 [2020-01-16 19:08:39,299 INFO L226 Difference]: Without dead ends: 2945 [2020-01-16 19:08:39,299 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:39,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2945 states. [2020-01-16 19:08:39,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2945 to 1573. [2020-01-16 19:08:39,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:08:39,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7031 transitions. [2020-01-16 19:08:39,364 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7031 transitions. Word has length 28 [2020-01-16 19:08:39,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:39,364 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7031 transitions. [2020-01-16 19:08:39,364 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:39,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7031 transitions. [2020-01-16 19:08:39,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:39,367 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:39,367 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:39,367 INFO L426 AbstractCegarLoop]: === Iteration 689 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:39,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:39,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1474385538, now seen corresponding path program 681 times [2020-01-16 19:08:39,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:39,367 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304352265] [2020-01-16 19:08:39,367 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:39,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:39,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:39,900 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304352265] [2020-01-16 19:08:39,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:39,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:39,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325728670] [2020-01-16 19:08:39,901 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:39,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:39,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:39,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:39,901 INFO L87 Difference]: Start difference. First operand 1573 states and 7031 transitions. Second operand 11 states. [2020-01-16 19:08:40,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:40,147 INFO L93 Difference]: Finished difference Result 2966 states and 11756 transitions. [2020-01-16 19:08:40,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:40,147 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:40,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:40,155 INFO L225 Difference]: With dead ends: 2966 [2020-01-16 19:08:40,155 INFO L226 Difference]: Without dead ends: 2950 [2020-01-16 19:08:40,155 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:40,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2020-01-16 19:08:40,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 1579. [2020-01-16 19:08:40,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 19:08:40,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7042 transitions. [2020-01-16 19:08:40,221 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7042 transitions. Word has length 28 [2020-01-16 19:08:40,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:40,222 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7042 transitions. [2020-01-16 19:08:40,222 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:40,222 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7042 transitions. [2020-01-16 19:08:40,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:40,224 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:40,224 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:40,224 INFO L426 AbstractCegarLoop]: === Iteration 690 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:40,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:40,224 INFO L82 PathProgramCache]: Analyzing trace with hash -556435348, now seen corresponding path program 682 times [2020-01-16 19:08:40,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:40,225 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45313862] [2020-01-16 19:08:40,225 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:40,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:40,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:40,747 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45313862] [2020-01-16 19:08:40,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:40,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:40,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691104612] [2020-01-16 19:08:40,748 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:40,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:40,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:40,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:40,748 INFO L87 Difference]: Start difference. First operand 1579 states and 7042 transitions. Second operand 11 states. [2020-01-16 19:08:40,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:40,941 INFO L93 Difference]: Finished difference Result 2967 states and 11752 transitions. [2020-01-16 19:08:40,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:40,942 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:40,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:40,949 INFO L225 Difference]: With dead ends: 2967 [2020-01-16 19:08:40,949 INFO L226 Difference]: Without dead ends: 2944 [2020-01-16 19:08:40,949 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:40,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2944 states. [2020-01-16 19:08:41,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2944 to 1573. [2020-01-16 19:08:41,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:08:41,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7025 transitions. [2020-01-16 19:08:41,015 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7025 transitions. Word has length 28 [2020-01-16 19:08:41,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:41,015 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7025 transitions. [2020-01-16 19:08:41,015 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:41,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7025 transitions. [2020-01-16 19:08:41,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:41,017 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:41,017 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:41,018 INFO L426 AbstractCegarLoop]: === Iteration 691 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:41,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:41,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1058065922, now seen corresponding path program 683 times [2020-01-16 19:08:41,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:41,018 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419817235] [2020-01-16 19:08:41,018 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:41,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:41,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:41,538 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419817235] [2020-01-16 19:08:41,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:41,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:41,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77534418] [2020-01-16 19:08:41,539 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:41,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:41,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:41,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:41,539 INFO L87 Difference]: Start difference. First operand 1573 states and 7025 transitions. Second operand 11 states. [2020-01-16 19:08:41,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:41,728 INFO L93 Difference]: Finished difference Result 2971 states and 11761 transitions. [2020-01-16 19:08:41,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:41,729 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:41,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:41,736 INFO L225 Difference]: With dead ends: 2971 [2020-01-16 19:08:41,736 INFO L226 Difference]: Without dead ends: 2953 [2020-01-16 19:08:41,736 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:41,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2953 states. [2020-01-16 19:08:41,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2953 to 1580. [2020-01-16 19:08:41,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 19:08:41,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7038 transitions. [2020-01-16 19:08:41,803 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7038 transitions. Word has length 28 [2020-01-16 19:08:41,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:41,803 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7038 transitions. [2020-01-16 19:08:41,803 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:41,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7038 transitions. [2020-01-16 19:08:41,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:41,805 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:41,805 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:41,805 INFO L426 AbstractCegarLoop]: === Iteration 692 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:41,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:41,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1629520728, now seen corresponding path program 684 times [2020-01-16 19:08:41,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:41,806 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238156451] [2020-01-16 19:08:41,806 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:41,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:42,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:42,335 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238156451] [2020-01-16 19:08:42,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:42,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:42,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525127120] [2020-01-16 19:08:42,335 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:42,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:42,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:42,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:42,335 INFO L87 Difference]: Start difference. First operand 1580 states and 7038 transitions. Second operand 11 states. [2020-01-16 19:08:42,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:42,519 INFO L93 Difference]: Finished difference Result 2970 states and 11752 transitions. [2020-01-16 19:08:42,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:42,519 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:42,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:42,526 INFO L225 Difference]: With dead ends: 2970 [2020-01-16 19:08:42,526 INFO L226 Difference]: Without dead ends: 2940 [2020-01-16 19:08:42,526 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:42,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2940 states. [2020-01-16 19:08:42,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2940 to 1567. [2020-01-16 19:08:42,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 19:08:42,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7010 transitions. [2020-01-16 19:08:42,593 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7010 transitions. Word has length 28 [2020-01-16 19:08:42,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:42,593 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7010 transitions. [2020-01-16 19:08:42,593 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:42,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7010 transitions. [2020-01-16 19:08:42,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:42,595 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:42,595 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:42,595 INFO L426 AbstractCegarLoop]: === Iteration 693 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:42,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:42,595 INFO L82 PathProgramCache]: Analyzing trace with hash -907646424, now seen corresponding path program 685 times [2020-01-16 19:08:42,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:42,596 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977505041] [2020-01-16 19:08:42,596 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:42,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:43,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:43,112 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977505041] [2020-01-16 19:08:43,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:43,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:43,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792568378] [2020-01-16 19:08:43,112 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:43,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:43,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:43,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:43,113 INFO L87 Difference]: Start difference. First operand 1567 states and 7010 transitions. Second operand 11 states. [2020-01-16 19:08:43,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:43,295 INFO L93 Difference]: Finished difference Result 2950 states and 11715 transitions. [2020-01-16 19:08:43,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:43,296 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:43,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:43,302 INFO L225 Difference]: With dead ends: 2950 [2020-01-16 19:08:43,302 INFO L226 Difference]: Without dead ends: 2934 [2020-01-16 19:08:43,302 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:43,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2934 states. [2020-01-16 19:08:43,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2934 to 1575. [2020-01-16 19:08:43,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:08:43,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7032 transitions. [2020-01-16 19:08:43,369 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7032 transitions. Word has length 28 [2020-01-16 19:08:43,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:43,369 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7032 transitions. [2020-01-16 19:08:43,369 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:43,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7032 transitions. [2020-01-16 19:08:43,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:43,371 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:43,371 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:43,371 INFO L426 AbstractCegarLoop]: === Iteration 694 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:43,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:43,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1479101230, now seen corresponding path program 686 times [2020-01-16 19:08:43,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:43,372 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819782612] [2020-01-16 19:08:43,372 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:43,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:43,885 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 19:08:43,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:43,892 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819782612] [2020-01-16 19:08:43,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:43,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:43,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652598072] [2020-01-16 19:08:43,892 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:43,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:43,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:43,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:43,893 INFO L87 Difference]: Start difference. First operand 1575 states and 7032 transitions. Second operand 11 states. [2020-01-16 19:08:44,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:44,077 INFO L93 Difference]: Finished difference Result 2948 states and 11707 transitions. [2020-01-16 19:08:44,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:44,077 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:44,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:44,085 INFO L225 Difference]: With dead ends: 2948 [2020-01-16 19:08:44,085 INFO L226 Difference]: Without dead ends: 2930 [2020-01-16 19:08:44,085 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:44,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2020-01-16 19:08:44,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1571. [2020-01-16 19:08:44,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:08:44,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7021 transitions. [2020-01-16 19:08:44,150 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7021 transitions. Word has length 28 [2020-01-16 19:08:44,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:44,151 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7021 transitions. [2020-01-16 19:08:44,151 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:44,151 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7021 transitions. [2020-01-16 19:08:44,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:44,153 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:44,153 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:44,153 INFO L426 AbstractCegarLoop]: === Iteration 695 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:44,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:44,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1980731804, now seen corresponding path program 687 times [2020-01-16 19:08:44,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:44,153 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359707470] [2020-01-16 19:08:44,154 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:44,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:44,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:44,672 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359707470] [2020-01-16 19:08:44,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:44,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:44,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123047682] [2020-01-16 19:08:44,673 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:44,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:44,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:44,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:44,673 INFO L87 Difference]: Start difference. First operand 1571 states and 7021 transitions. Second operand 11 states. [2020-01-16 19:08:44,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:44,881 INFO L93 Difference]: Finished difference Result 2955 states and 11723 transitions. [2020-01-16 19:08:44,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:44,881 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:44,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:44,888 INFO L225 Difference]: With dead ends: 2955 [2020-01-16 19:08:44,888 INFO L226 Difference]: Without dead ends: 2939 [2020-01-16 19:08:44,888 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:44,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2939 states. [2020-01-16 19:08:44,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2939 to 1577. [2020-01-16 19:08:44,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 19:08:44,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7032 transitions. [2020-01-16 19:08:44,955 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7032 transitions. Word has length 28 [2020-01-16 19:08:44,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:44,955 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7032 transitions. [2020-01-16 19:08:44,955 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:44,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7032 transitions. [2020-01-16 19:08:44,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:44,958 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:44,958 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:44,958 INFO L426 AbstractCegarLoop]: === Iteration 696 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:44,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:44,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1062781614, now seen corresponding path program 688 times [2020-01-16 19:08:44,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:44,958 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382626335] [2020-01-16 19:08:44,958 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:44,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:45,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:45,522 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382626335] [2020-01-16 19:08:45,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:45,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:45,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402545228] [2020-01-16 19:08:45,522 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:45,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:45,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:45,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:45,523 INFO L87 Difference]: Start difference. First operand 1577 states and 7032 transitions. Second operand 11 states. [2020-01-16 19:08:45,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:45,722 INFO L93 Difference]: Finished difference Result 2956 states and 11719 transitions. [2020-01-16 19:08:45,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:45,723 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:45,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:45,730 INFO L225 Difference]: With dead ends: 2956 [2020-01-16 19:08:45,730 INFO L226 Difference]: Without dead ends: 2933 [2020-01-16 19:08:45,730 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:45,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2933 states. [2020-01-16 19:08:45,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2933 to 1571. [2020-01-16 19:08:45,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:08:45,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7017 transitions. [2020-01-16 19:08:45,797 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7017 transitions. Word has length 28 [2020-01-16 19:08:45,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:45,797 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7017 transitions. [2020-01-16 19:08:45,797 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:45,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7017 transitions. [2020-01-16 19:08:45,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:45,800 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:45,800 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:45,800 INFO L426 AbstractCegarLoop]: === Iteration 697 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:45,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:45,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1207550884, now seen corresponding path program 689 times [2020-01-16 19:08:45,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:45,800 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063674216] [2020-01-16 19:08:45,800 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:45,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:46,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:46,326 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063674216] [2020-01-16 19:08:46,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:46,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:46,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353646501] [2020-01-16 19:08:46,327 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:46,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:46,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:46,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:46,327 INFO L87 Difference]: Start difference. First operand 1571 states and 7017 transitions. Second operand 11 states. [2020-01-16 19:08:46,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:46,507 INFO L93 Difference]: Finished difference Result 2949 states and 11705 transitions. [2020-01-16 19:08:46,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:46,508 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:46,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:46,515 INFO L225 Difference]: With dead ends: 2949 [2020-01-16 19:08:46,516 INFO L226 Difference]: Without dead ends: 2935 [2020-01-16 19:08:46,516 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:46,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2935 states. [2020-01-16 19:08:46,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2935 to 1575. [2020-01-16 19:08:46,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:08:46,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7024 transitions. [2020-01-16 19:08:46,582 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7024 transitions. Word has length 28 [2020-01-16 19:08:46,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:46,582 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7024 transitions. [2020-01-16 19:08:46,582 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:46,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7024 transitions. [2020-01-16 19:08:46,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:46,584 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:46,584 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:46,585 INFO L426 AbstractCegarLoop]: === Iteration 698 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:46,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:46,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1598011416, now seen corresponding path program 690 times [2020-01-16 19:08:46,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:46,585 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141433030] [2020-01-16 19:08:46,585 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:46,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:47,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:47,119 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141433030] [2020-01-16 19:08:47,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:47,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:47,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355440111] [2020-01-16 19:08:47,119 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:47,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:47,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:47,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:47,120 INFO L87 Difference]: Start difference. First operand 1575 states and 7024 transitions. Second operand 11 states. [2020-01-16 19:08:47,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:47,307 INFO L93 Difference]: Finished difference Result 2952 states and 11707 transitions. [2020-01-16 19:08:47,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:47,308 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:47,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:47,315 INFO L225 Difference]: With dead ends: 2952 [2020-01-16 19:08:47,315 INFO L226 Difference]: Without dead ends: 2927 [2020-01-16 19:08:47,315 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:47,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2927 states. [2020-01-16 19:08:47,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2927 to 1567. [2020-01-16 19:08:47,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 19:08:47,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7006 transitions. [2020-01-16 19:08:47,381 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7006 transitions. Word has length 28 [2020-01-16 19:08:47,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:47,381 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7006 transitions. [2020-01-16 19:08:47,381 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:47,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7006 transitions. [2020-01-16 19:08:47,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:47,384 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:47,384 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:47,384 INFO L426 AbstractCegarLoop]: === Iteration 699 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:47,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:47,384 INFO L82 PathProgramCache]: Analyzing trace with hash 602764780, now seen corresponding path program 691 times [2020-01-16 19:08:47,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:47,384 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097965306] [2020-01-16 19:08:47,384 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:47,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:47,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:47,895 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097965306] [2020-01-16 19:08:47,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:47,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:47,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637581758] [2020-01-16 19:08:47,896 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:47,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:47,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:47,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:47,896 INFO L87 Difference]: Start difference. First operand 1567 states and 7006 transitions. Second operand 11 states. [2020-01-16 19:08:48,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:48,090 INFO L93 Difference]: Finished difference Result 2957 states and 11726 transitions. [2020-01-16 19:08:48,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:48,091 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:48,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:48,098 INFO L225 Difference]: With dead ends: 2957 [2020-01-16 19:08:48,099 INFO L226 Difference]: Without dead ends: 2939 [2020-01-16 19:08:48,099 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:48,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2939 states. [2020-01-16 19:08:48,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2939 to 1575. [2020-01-16 19:08:48,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:08:48,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7028 transitions. [2020-01-16 19:08:48,165 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7028 transitions. Word has length 28 [2020-01-16 19:08:48,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:48,165 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7028 transitions. [2020-01-16 19:08:48,165 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:48,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7028 transitions. [2020-01-16 19:08:48,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:48,167 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:48,167 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:48,168 INFO L426 AbstractCegarLoop]: === Iteration 700 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:48,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:48,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1458095022, now seen corresponding path program 692 times [2020-01-16 19:08:48,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:48,168 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029034789] [2020-01-16 19:08:48,168 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:48,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:48,685 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 19:08:48,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:48,693 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029034789] [2020-01-16 19:08:48,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:48,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:48,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50515227] [2020-01-16 19:08:48,693 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:48,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:48,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:48,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:48,694 INFO L87 Difference]: Start difference. First operand 1575 states and 7028 transitions. Second operand 11 states. [2020-01-16 19:08:48,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:48,865 INFO L93 Difference]: Finished difference Result 2953 states and 11714 transitions. [2020-01-16 19:08:48,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:48,866 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:48,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:48,873 INFO L225 Difference]: With dead ends: 2953 [2020-01-16 19:08:48,874 INFO L226 Difference]: Without dead ends: 2935 [2020-01-16 19:08:48,874 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:48,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2935 states. [2020-01-16 19:08:48,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2935 to 1571. [2020-01-16 19:08:48,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:08:48,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7017 transitions. [2020-01-16 19:08:48,945 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7017 transitions. Word has length 28 [2020-01-16 19:08:48,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:48,945 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7017 transitions. [2020-01-16 19:08:48,945 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:48,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7017 transitions. [2020-01-16 19:08:48,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:48,948 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:48,948 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:48,948 INFO L426 AbstractCegarLoop]: === Iteration 701 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:48,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:48,949 INFO L82 PathProgramCache]: Analyzing trace with hash -470320600, now seen corresponding path program 693 times [2020-01-16 19:08:48,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:48,949 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012991947] [2020-01-16 19:08:48,949 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:48,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:49,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:49,480 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012991947] [2020-01-16 19:08:49,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:49,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:49,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997903016] [2020-01-16 19:08:49,481 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:49,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:49,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:49,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:49,481 INFO L87 Difference]: Start difference. First operand 1571 states and 7017 transitions. Second operand 11 states. [2020-01-16 19:08:49,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:49,679 INFO L93 Difference]: Finished difference Result 2963 states and 11737 transitions. [2020-01-16 19:08:49,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:49,679 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:49,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:49,687 INFO L225 Difference]: With dead ends: 2963 [2020-01-16 19:08:49,687 INFO L226 Difference]: Without dead ends: 2945 [2020-01-16 19:08:49,687 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:49,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2945 states. [2020-01-16 19:08:49,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2945 to 1578. [2020-01-16 19:08:49,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 19:08:49,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7030 transitions. [2020-01-16 19:08:49,753 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7030 transitions. Word has length 28 [2020-01-16 19:08:49,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:49,753 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7030 transitions. [2020-01-16 19:08:49,753 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:49,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7030 transitions. [2020-01-16 19:08:49,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:49,755 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:49,755 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:49,755 INFO L426 AbstractCegarLoop]: === Iteration 702 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:49,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:49,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1041775406, now seen corresponding path program 694 times [2020-01-16 19:08:49,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:49,756 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274312647] [2020-01-16 19:08:49,756 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:49,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:50,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:50,287 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274312647] [2020-01-16 19:08:50,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:50,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:50,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869837399] [2020-01-16 19:08:50,288 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:50,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:50,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:50,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:50,288 INFO L87 Difference]: Start difference. First operand 1578 states and 7030 transitions. Second operand 11 states. [2020-01-16 19:08:50,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:50,464 INFO L93 Difference]: Finished difference Result 2962 states and 11728 transitions. [2020-01-16 19:08:50,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:50,465 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:50,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:50,471 INFO L225 Difference]: With dead ends: 2962 [2020-01-16 19:08:50,471 INFO L226 Difference]: Without dead ends: 2938 [2020-01-16 19:08:50,472 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:50,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2020-01-16 19:08:50,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 1571. [2020-01-16 19:08:50,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:08:50,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7013 transitions. [2020-01-16 19:08:50,537 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7013 transitions. Word has length 28 [2020-01-16 19:08:50,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:50,537 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7013 transitions. [2020-01-16 19:08:50,538 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:50,538 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7013 transitions. [2020-01-16 19:08:50,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:50,541 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:50,541 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:50,541 INFO L426 AbstractCegarLoop]: === Iteration 703 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:50,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:50,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1993324824, now seen corresponding path program 695 times [2020-01-16 19:08:50,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:50,541 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611317314] [2020-01-16 19:08:50,541 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:50,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:51,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:51,063 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611317314] [2020-01-16 19:08:51,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:51,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:51,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445854493] [2020-01-16 19:08:51,063 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:51,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:51,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:51,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:51,064 INFO L87 Difference]: Start difference. First operand 1571 states and 7013 transitions. Second operand 11 states. [2020-01-16 19:08:51,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:51,243 INFO L93 Difference]: Finished difference Result 2952 states and 11708 transitions. [2020-01-16 19:08:51,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:51,244 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:51,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:51,251 INFO L225 Difference]: With dead ends: 2952 [2020-01-16 19:08:51,252 INFO L226 Difference]: Without dead ends: 2938 [2020-01-16 19:08:51,252 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:51,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2020-01-16 19:08:51,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 1575. [2020-01-16 19:08:51,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:08:51,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7020 transitions. [2020-01-16 19:08:51,338 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7020 transitions. Word has length 28 [2020-01-16 19:08:51,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:51,338 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7020 transitions. [2020-01-16 19:08:51,338 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:51,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7020 transitions. [2020-01-16 19:08:51,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:51,341 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:51,341 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:51,341 INFO L426 AbstractCegarLoop]: === Iteration 704 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:51,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:51,341 INFO L82 PathProgramCache]: Analyzing trace with hash -503919828, now seen corresponding path program 696 times [2020-01-16 19:08:51,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:51,341 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669830208] [2020-01-16 19:08:51,342 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:51,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:51,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:51,857 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669830208] [2020-01-16 19:08:51,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:51,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:51,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266188955] [2020-01-16 19:08:51,858 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:51,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:51,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:51,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:51,858 INFO L87 Difference]: Start difference. First operand 1575 states and 7020 transitions. Second operand 11 states. [2020-01-16 19:08:52,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:52,060 INFO L93 Difference]: Finished difference Result 2955 states and 11710 transitions. [2020-01-16 19:08:52,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:52,060 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:52,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:52,067 INFO L225 Difference]: With dead ends: 2955 [2020-01-16 19:08:52,068 INFO L226 Difference]: Without dead ends: 2926 [2020-01-16 19:08:52,068 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:52,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2020-01-16 19:08:52,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 1563. [2020-01-16 19:08:52,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 19:08:52,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 6995 transitions. [2020-01-16 19:08:52,134 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 6995 transitions. Word has length 28 [2020-01-16 19:08:52,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:52,134 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 6995 transitions. [2020-01-16 19:08:52,134 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:52,134 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 6995 transitions. [2020-01-16 19:08:52,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:52,136 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:52,137 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:52,137 INFO L426 AbstractCegarLoop]: === Iteration 705 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:52,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:52,137 INFO L82 PathProgramCache]: Analyzing trace with hash 647992356, now seen corresponding path program 697 times [2020-01-16 19:08:52,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:52,137 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378358167] [2020-01-16 19:08:52,137 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:52,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:52,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:52,680 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378358167] [2020-01-16 19:08:52,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:52,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:52,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217818032] [2020-01-16 19:08:52,680 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:52,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:52,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:52,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:52,681 INFO L87 Difference]: Start difference. First operand 1563 states and 6995 transitions. Second operand 11 states. [2020-01-16 19:08:52,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:52,822 INFO L93 Difference]: Finished difference Result 3001 states and 11831 transitions. [2020-01-16 19:08:52,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:52,823 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:52,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:52,830 INFO L225 Difference]: With dead ends: 3001 [2020-01-16 19:08:52,831 INFO L226 Difference]: Without dead ends: 2981 [2020-01-16 19:08:52,831 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:52,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2981 states. [2020-01-16 19:08:52,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2981 to 1586. [2020-01-16 19:08:52,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1586 states. [2020-01-16 19:08:52,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 7060 transitions. [2020-01-16 19:08:52,898 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 7060 transitions. Word has length 28 [2020-01-16 19:08:52,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:52,898 INFO L478 AbstractCegarLoop]: Abstraction has 1586 states and 7060 transitions. [2020-01-16 19:08:52,898 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:52,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 7060 transitions. [2020-01-16 19:08:52,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:52,901 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:52,901 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:52,901 INFO L426 AbstractCegarLoop]: === Iteration 706 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:52,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:52,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1392694854, now seen corresponding path program 698 times [2020-01-16 19:08:52,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:52,901 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717377438] [2020-01-16 19:08:52,901 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:52,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:53,442 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 19:08:53,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:53,448 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717377438] [2020-01-16 19:08:53,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:53,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:53,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363051894] [2020-01-16 19:08:53,449 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:53,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:53,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:53,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:53,449 INFO L87 Difference]: Start difference. First operand 1586 states and 7060 transitions. Second operand 11 states. [2020-01-16 19:08:53,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:53,625 INFO L93 Difference]: Finished difference Result 2999 states and 11819 transitions. [2020-01-16 19:08:53,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:53,626 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:53,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:53,633 INFO L225 Difference]: With dead ends: 2999 [2020-01-16 19:08:53,633 INFO L226 Difference]: Without dead ends: 2971 [2020-01-16 19:08:53,633 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:53,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2971 states. [2020-01-16 19:08:53,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2971 to 1576. [2020-01-16 19:08:53,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 19:08:53,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7037 transitions. [2020-01-16 19:08:53,702 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7037 transitions. Word has length 28 [2020-01-16 19:08:53,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:53,702 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7037 transitions. [2020-01-16 19:08:53,702 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:53,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7037 transitions. [2020-01-16 19:08:53,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:53,705 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:53,705 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:53,705 INFO L426 AbstractCegarLoop]: === Iteration 707 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:53,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:53,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1185847934, now seen corresponding path program 699 times [2020-01-16 19:08:53,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:53,705 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119190344] [2020-01-16 19:08:53,705 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:53,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:54,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:54,234 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119190344] [2020-01-16 19:08:54,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:54,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:54,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758990752] [2020-01-16 19:08:54,234 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:54,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:54,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:54,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:54,235 INFO L87 Difference]: Start difference. First operand 1576 states and 7037 transitions. Second operand 11 states. [2020-01-16 19:08:54,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:54,379 INFO L93 Difference]: Finished difference Result 2992 states and 11804 transitions. [2020-01-16 19:08:54,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:54,379 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:54,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:54,387 INFO L225 Difference]: With dead ends: 2992 [2020-01-16 19:08:54,387 INFO L226 Difference]: Without dead ends: 2972 [2020-01-16 19:08:54,387 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:54,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2972 states. [2020-01-16 19:08:54,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2972 to 1581. [2020-01-16 19:08:54,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 19:08:54,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7045 transitions. [2020-01-16 19:08:54,454 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7045 transitions. Word has length 28 [2020-01-16 19:08:54,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:54,454 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7045 transitions. [2020-01-16 19:08:54,455 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:54,455 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7045 transitions. [2020-01-16 19:08:54,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:54,457 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:54,457 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:54,457 INFO L426 AbstractCegarLoop]: === Iteration 708 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:54,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:54,457 INFO L82 PathProgramCache]: Analyzing trace with hash -130309370, now seen corresponding path program 700 times [2020-01-16 19:08:54,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:54,457 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539760734] [2020-01-16 19:08:54,457 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:54,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:54,982 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 19:08:54,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:54,989 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539760734] [2020-01-16 19:08:54,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:54,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:54,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733117414] [2020-01-16 19:08:54,990 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:54,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:54,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:54,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:54,990 INFO L87 Difference]: Start difference. First operand 1581 states and 7045 transitions. Second operand 11 states. [2020-01-16 19:08:55,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:55,209 INFO L93 Difference]: Finished difference Result 2986 states and 11788 transitions. [2020-01-16 19:08:55,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:55,209 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:55,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:55,217 INFO L225 Difference]: With dead ends: 2986 [2020-01-16 19:08:55,217 INFO L226 Difference]: Without dead ends: 2967 [2020-01-16 19:08:55,217 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:55,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2967 states. [2020-01-16 19:08:55,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2967 to 1576. [2020-01-16 19:08:55,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 19:08:55,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7032 transitions. [2020-01-16 19:08:55,284 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7032 transitions. Word has length 28 [2020-01-16 19:08:55,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:55,284 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7032 transitions. [2020-01-16 19:08:55,284 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:55,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7032 transitions. [2020-01-16 19:08:55,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:55,287 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:55,287 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:55,287 INFO L426 AbstractCegarLoop]: === Iteration 709 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:55,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:55,287 INFO L82 PathProgramCache]: Analyzing trace with hash -753475906, now seen corresponding path program 701 times [2020-01-16 19:08:55,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:55,287 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368334408] [2020-01-16 19:08:55,287 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:55,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:55,808 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 19:08:55,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:55,815 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368334408] [2020-01-16 19:08:55,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:55,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:55,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138803363] [2020-01-16 19:08:55,815 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:55,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:55,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:55,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:55,816 INFO L87 Difference]: Start difference. First operand 1576 states and 7032 transitions. Second operand 11 states. [2020-01-16 19:08:55,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:55,993 INFO L93 Difference]: Finished difference Result 2987 states and 11791 transitions. [2020-01-16 19:08:55,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:55,994 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:55,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:56,001 INFO L225 Difference]: With dead ends: 2987 [2020-01-16 19:08:56,001 INFO L226 Difference]: Without dead ends: 2969 [2020-01-16 19:08:56,001 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:56,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2969 states. [2020-01-16 19:08:56,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2969 to 1580. [2020-01-16 19:08:56,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 19:08:56,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7039 transitions. [2020-01-16 19:08:56,067 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7039 transitions. Word has length 28 [2020-01-16 19:08:56,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:56,067 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7039 transitions. [2020-01-16 19:08:56,067 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:56,068 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7039 transitions. [2020-01-16 19:08:56,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:56,070 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:56,070 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:56,070 INFO L426 AbstractCegarLoop]: === Iteration 710 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:56,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:56,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1480631588, now seen corresponding path program 702 times [2020-01-16 19:08:56,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:56,070 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90793523] [2020-01-16 19:08:56,070 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:56,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:56,588 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 19:08:56,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:56,596 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90793523] [2020-01-16 19:08:56,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:56,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:56,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552008389] [2020-01-16 19:08:56,596 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:56,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:56,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:56,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:56,597 INFO L87 Difference]: Start difference. First operand 1580 states and 7039 transitions. Second operand 11 states. [2020-01-16 19:08:56,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:56,776 INFO L93 Difference]: Finished difference Result 2983 states and 11779 transitions. [2020-01-16 19:08:56,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:56,777 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:56,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:56,784 INFO L225 Difference]: With dead ends: 2983 [2020-01-16 19:08:56,784 INFO L226 Difference]: Without dead ends: 2959 [2020-01-16 19:08:56,784 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:56,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2959 states. [2020-01-16 19:08:56,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2959 to 1570. [2020-01-16 19:08:56,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 19:08:56,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7017 transitions. [2020-01-16 19:08:56,852 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7017 transitions. Word has length 28 [2020-01-16 19:08:56,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:56,852 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7017 transitions. [2020-01-16 19:08:56,853 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:56,853 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7017 transitions. [2020-01-16 19:08:56,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:56,855 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:56,855 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:56,855 INFO L426 AbstractCegarLoop]: === Iteration 711 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:56,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:56,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1742083944, now seen corresponding path program 703 times [2020-01-16 19:08:56,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:56,855 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270998357] [2020-01-16 19:08:56,855 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:56,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:57,429 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 19:08:57,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:57,436 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270998357] [2020-01-16 19:08:57,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:57,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:57,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786158172] [2020-01-16 19:08:57,437 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:57,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:57,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:57,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:57,437 INFO L87 Difference]: Start difference. First operand 1570 states and 7017 transitions. Second operand 11 states. [2020-01-16 19:08:57,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:57,602 INFO L93 Difference]: Finished difference Result 3014 states and 11862 transitions. [2020-01-16 19:08:57,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:57,602 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:57,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:57,610 INFO L225 Difference]: With dead ends: 3014 [2020-01-16 19:08:57,610 INFO L226 Difference]: Without dead ends: 2994 [2020-01-16 19:08:57,610 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:57,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2020-01-16 19:08:57,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 1590. [2020-01-16 19:08:57,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1590 states. [2020-01-16 19:08:57,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 7067 transitions. [2020-01-16 19:08:57,676 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 7067 transitions. Word has length 28 [2020-01-16 19:08:57,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:57,676 INFO L478 AbstractCegarLoop]: Abstraction has 1590 states and 7067 transitions. [2020-01-16 19:08:57,676 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:57,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 7067 transitions. [2020-01-16 19:08:57,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:57,678 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:57,679 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:57,679 INFO L426 AbstractCegarLoop]: === Iteration 712 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:57,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:57,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1808180854, now seen corresponding path program 704 times [2020-01-16 19:08:57,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:57,679 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465604252] [2020-01-16 19:08:57,679 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:57,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:58,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:58,218 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465604252] [2020-01-16 19:08:58,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:58,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:58,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310400392] [2020-01-16 19:08:58,218 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:58,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:58,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:58,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:58,219 INFO L87 Difference]: Start difference. First operand 1590 states and 7067 transitions. Second operand 11 states. [2020-01-16 19:08:58,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:58,438 INFO L93 Difference]: Finished difference Result 3012 states and 11850 transitions. [2020-01-16 19:08:58,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:58,439 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:58,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:58,446 INFO L225 Difference]: With dead ends: 3012 [2020-01-16 19:08:58,446 INFO L226 Difference]: Without dead ends: 2984 [2020-01-16 19:08:58,447 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:58,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2984 states. [2020-01-16 19:08:58,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2984 to 1580. [2020-01-16 19:08:58,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 19:08:58,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7041 transitions. [2020-01-16 19:08:58,513 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7041 transitions. Word has length 28 [2020-01-16 19:08:58,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:58,513 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7041 transitions. [2020-01-16 19:08:58,513 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:58,513 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7041 transitions. [2020-01-16 19:08:58,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:58,516 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:58,516 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:58,516 INFO L426 AbstractCegarLoop]: === Iteration 713 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:58,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:58,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1206854142, now seen corresponding path program 705 times [2020-01-16 19:08:58,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:58,516 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966755473] [2020-01-16 19:08:58,516 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:58,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:59,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:59,060 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966755473] [2020-01-16 19:08:59,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:59,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:59,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045526313] [2020-01-16 19:08:59,061 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:59,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:59,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:59,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:59,061 INFO L87 Difference]: Start difference. First operand 1580 states and 7041 transitions. Second operand 11 states. [2020-01-16 19:08:59,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:08:59,204 INFO L93 Difference]: Finished difference Result 3011 states and 11847 transitions. [2020-01-16 19:08:59,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:08:59,205 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:08:59,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:08:59,212 INFO L225 Difference]: With dead ends: 3011 [2020-01-16 19:08:59,212 INFO L226 Difference]: Without dead ends: 2991 [2020-01-16 19:08:59,212 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:08:59,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2991 states. [2020-01-16 19:08:59,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2991 to 1588. [2020-01-16 19:08:59,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1588 states. [2020-01-16 19:08:59,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 7055 transitions. [2020-01-16 19:08:59,281 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 7055 transitions. Word has length 28 [2020-01-16 19:08:59,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:08:59,281 INFO L478 AbstractCegarLoop]: Abstraction has 1588 states and 7055 transitions. [2020-01-16 19:08:59,281 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:08:59,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 7055 transitions. [2020-01-16 19:08:59,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:08:59,284 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:08:59,284 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:08:59,284 INFO L426 AbstractCegarLoop]: === Iteration 714 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:08:59,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:08:59,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1380101834, now seen corresponding path program 706 times [2020-01-16 19:08:59,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:08:59,284 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650093039] [2020-01-16 19:08:59,284 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:08:59,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:08:59,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:08:59,826 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650093039] [2020-01-16 19:08:59,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:08:59,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:08:59,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453976188] [2020-01-16 19:08:59,826 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:08:59,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:08:59,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:08:59,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:08:59,827 INFO L87 Difference]: Start difference. First operand 1588 states and 7055 transitions. Second operand 11 states. [2020-01-16 19:09:00,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:00,032 INFO L93 Difference]: Finished difference Result 3008 states and 11834 transitions. [2020-01-16 19:09:00,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:00,032 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:00,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:00,040 INFO L225 Difference]: With dead ends: 3008 [2020-01-16 19:09:00,040 INFO L226 Difference]: Without dead ends: 2983 [2020-01-16 19:09:00,040 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:00,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2983 states. [2020-01-16 19:09:00,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2983 to 1580. [2020-01-16 19:09:00,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 19:09:00,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7033 transitions. [2020-01-16 19:09:00,107 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7033 transitions. Word has length 28 [2020-01-16 19:09:00,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:00,107 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7033 transitions. [2020-01-16 19:09:00,107 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:00,107 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7033 transitions. [2020-01-16 19:09:00,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:00,109 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:00,110 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:00,110 INFO L426 AbstractCegarLoop]: === Iteration 715 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:00,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:00,110 INFO L82 PathProgramCache]: Analyzing trace with hash -732469698, now seen corresponding path program 707 times [2020-01-16 19:09:00,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:00,110 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171124229] [2020-01-16 19:09:00,110 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:00,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:00,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:00,654 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171124229] [2020-01-16 19:09:00,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:00,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:00,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545135791] [2020-01-16 19:09:00,655 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:00,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:00,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:00,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:00,655 INFO L87 Difference]: Start difference. First operand 1580 states and 7033 transitions. Second operand 11 states. [2020-01-16 19:09:00,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:00,845 INFO L93 Difference]: Finished difference Result 3006 states and 11831 transitions. [2020-01-16 19:09:00,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:00,845 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:00,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:00,853 INFO L225 Difference]: With dead ends: 3006 [2020-01-16 19:09:00,853 INFO L226 Difference]: Without dead ends: 2988 [2020-01-16 19:09:00,853 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:00,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2988 states. [2020-01-16 19:09:00,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2988 to 1587. [2020-01-16 19:09:00,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1587 states. [2020-01-16 19:09:00,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 7046 transitions. [2020-01-16 19:09:00,920 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 7046 transitions. Word has length 28 [2020-01-16 19:09:00,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:00,920 INFO L478 AbstractCegarLoop]: Abstraction has 1587 states and 7046 transitions. [2020-01-16 19:09:00,920 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:00,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 7046 transitions. [2020-01-16 19:09:00,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:00,922 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:00,922 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:00,922 INFO L426 AbstractCegarLoop]: === Iteration 716 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:00,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:00,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1303924504, now seen corresponding path program 708 times [2020-01-16 19:09:00,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:00,923 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996554516] [2020-01-16 19:09:00,923 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:00,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:01,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:01,461 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996554516] [2020-01-16 19:09:01,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:01,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:01,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046471795] [2020-01-16 19:09:01,461 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:01,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:01,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:01,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:01,462 INFO L87 Difference]: Start difference. First operand 1587 states and 7046 transitions. Second operand 11 states. [2020-01-16 19:09:01,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:01,648 INFO L93 Difference]: Finished difference Result 3005 states and 11822 transitions. [2020-01-16 19:09:01,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:01,648 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:01,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:01,655 INFO L225 Difference]: With dead ends: 3005 [2020-01-16 19:09:01,656 INFO L226 Difference]: Without dead ends: 2971 [2020-01-16 19:09:01,656 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:01,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2971 states. [2020-01-16 19:09:01,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2971 to 1570. [2020-01-16 19:09:01,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 19:09:01,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7010 transitions. [2020-01-16 19:09:01,722 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7010 transitions. Word has length 28 [2020-01-16 19:09:01,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:01,722 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7010 transitions. [2020-01-16 19:09:01,723 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:01,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7010 transitions. [2020-01-16 19:09:01,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:01,725 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:01,725 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:01,725 INFO L426 AbstractCegarLoop]: === Iteration 717 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:01,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:01,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1773593256, now seen corresponding path program 709 times [2020-01-16 19:09:01,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:01,725 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678632460] [2020-01-16 19:09:01,725 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:01,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:02,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:02,260 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678632460] [2020-01-16 19:09:02,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:02,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:02,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178366398] [2020-01-16 19:09:02,260 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:02,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:02,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:02,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:02,261 INFO L87 Difference]: Start difference. First operand 1570 states and 7010 transitions. Second operand 11 states. [2020-01-16 19:09:02,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:02,433 INFO L93 Difference]: Finished difference Result 2988 states and 11789 transitions. [2020-01-16 19:09:02,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:02,434 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:02,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:02,441 INFO L225 Difference]: With dead ends: 2988 [2020-01-16 19:09:02,441 INFO L226 Difference]: Without dead ends: 2968 [2020-01-16 19:09:02,442 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:02,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2968 states. [2020-01-16 19:09:02,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2968 to 1580. [2020-01-16 19:09:02,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 19:09:02,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7036 transitions. [2020-01-16 19:09:02,509 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7036 transitions. Word has length 28 [2020-01-16 19:09:02,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:02,509 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7036 transitions. [2020-01-16 19:09:02,509 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:02,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7036 transitions. [2020-01-16 19:09:02,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:02,512 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:02,512 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:02,512 INFO L426 AbstractCegarLoop]: === Iteration 718 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:02,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:02,512 INFO L82 PathProgramCache]: Analyzing trace with hash 457435952, now seen corresponding path program 710 times [2020-01-16 19:09:02,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:02,512 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123575202] [2020-01-16 19:09:02,512 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:02,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:03,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:03,035 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123575202] [2020-01-16 19:09:03,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:03,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:03,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900437435] [2020-01-16 19:09:03,035 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:03,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:03,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:03,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:03,036 INFO L87 Difference]: Start difference. First operand 1580 states and 7036 transitions. Second operand 11 states. [2020-01-16 19:09:03,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:03,232 INFO L93 Difference]: Finished difference Result 2982 states and 11773 transitions. [2020-01-16 19:09:03,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:03,232 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:03,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:03,239 INFO L225 Difference]: With dead ends: 2982 [2020-01-16 19:09:03,240 INFO L226 Difference]: Without dead ends: 2963 [2020-01-16 19:09:03,240 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:03,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2963 states. [2020-01-16 19:09:03,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2963 to 1575. [2020-01-16 19:09:03,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:09:03,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7023 transitions. [2020-01-16 19:09:03,307 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7023 transitions. Word has length 28 [2020-01-16 19:09:03,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:03,308 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7023 transitions. [2020-01-16 19:09:03,308 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:03,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7023 transitions. [2020-01-16 19:09:03,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:03,310 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:03,310 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:03,310 INFO L426 AbstractCegarLoop]: === Iteration 719 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:03,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:03,310 INFO L82 PathProgramCache]: Analyzing trace with hash 700507876, now seen corresponding path program 711 times [2020-01-16 19:09:03,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:03,311 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641016754] [2020-01-16 19:09:03,311 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:03,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:03,873 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 19:09:03,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:03,880 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641016754] [2020-01-16 19:09:03,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:03,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:03,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721230371] [2020-01-16 19:09:03,880 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:03,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:03,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:03,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:03,881 INFO L87 Difference]: Start difference. First operand 1575 states and 7023 transitions. Second operand 11 states. [2020-01-16 19:09:04,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:04,031 INFO L93 Difference]: Finished difference Result 2994 states and 11799 transitions. [2020-01-16 19:09:04,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:04,031 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:04,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:04,037 INFO L225 Difference]: With dead ends: 2994 [2020-01-16 19:09:04,038 INFO L226 Difference]: Without dead ends: 2974 [2020-01-16 19:09:04,038 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:04,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2974 states. [2020-01-16 19:09:04,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2974 to 1583. [2020-01-16 19:09:04,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 19:09:04,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7037 transitions. [2020-01-16 19:09:04,105 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7037 transitions. Word has length 28 [2020-01-16 19:09:04,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:04,105 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7037 transitions. [2020-01-16 19:09:04,105 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:04,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7037 transitions. [2020-01-16 19:09:04,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:04,108 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:04,108 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:04,108 INFO L426 AbstractCegarLoop]: === Iteration 720 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:04,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:04,108 INFO L82 PathProgramCache]: Analyzing trace with hash 873755568, now seen corresponding path program 712 times [2020-01-16 19:09:04,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:04,108 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990132687] [2020-01-16 19:09:04,108 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:04,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:04,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:04,640 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990132687] [2020-01-16 19:09:04,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:04,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:04,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315078059] [2020-01-16 19:09:04,641 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:04,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:04,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:04,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:04,641 INFO L87 Difference]: Start difference. First operand 1583 states and 7037 transitions. Second operand 11 states. [2020-01-16 19:09:04,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:04,864 INFO L93 Difference]: Finished difference Result 2991 states and 11786 transitions. [2020-01-16 19:09:04,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:04,865 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:04,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:04,872 INFO L225 Difference]: With dead ends: 2991 [2020-01-16 19:09:04,872 INFO L226 Difference]: Without dead ends: 2966 [2020-01-16 19:09:04,873 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:04,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2966 states. [2020-01-16 19:09:04,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2966 to 1575. [2020-01-16 19:09:04,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:09:04,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7018 transitions. [2020-01-16 19:09:04,939 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7018 transitions. Word has length 28 [2020-01-16 19:09:04,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:04,940 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7018 transitions. [2020-01-16 19:09:04,940 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:04,940 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7018 transitions. [2020-01-16 19:09:04,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:04,942 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:04,942 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:04,942 INFO L426 AbstractCegarLoop]: === Iteration 721 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:04,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:04,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1533147108, now seen corresponding path program 713 times [2020-01-16 19:09:04,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:04,942 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337662928] [2020-01-16 19:09:04,943 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:04,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:05,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:05,472 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337662928] [2020-01-16 19:09:05,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:05,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:05,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851578925] [2020-01-16 19:09:05,473 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:05,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:05,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:05,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:05,473 INFO L87 Difference]: Start difference. First operand 1575 states and 7018 transitions. Second operand 11 states. [2020-01-16 19:09:05,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:05,699 INFO L93 Difference]: Finished difference Result 2978 states and 11761 transitions. [2020-01-16 19:09:05,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:05,700 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:05,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:05,707 INFO L225 Difference]: With dead ends: 2978 [2020-01-16 19:09:05,707 INFO L226 Difference]: Without dead ends: 2964 [2020-01-16 19:09:05,707 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:05,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2964 states. [2020-01-16 19:09:05,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2964 to 1579. [2020-01-16 19:09:05,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 19:09:05,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7025 transitions. [2020-01-16 19:09:05,775 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7025 transitions. Word has length 28 [2020-01-16 19:09:05,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:05,775 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7025 transitions. [2020-01-16 19:09:05,775 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:05,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7025 transitions. [2020-01-16 19:09:05,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:05,777 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:05,777 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:05,777 INFO L426 AbstractCegarLoop]: === Iteration 722 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:05,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:05,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1272415192, now seen corresponding path program 714 times [2020-01-16 19:09:05,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:05,778 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9940154] [2020-01-16 19:09:05,778 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:05,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:06,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:06,335 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9940154] [2020-01-16 19:09:06,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:06,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:06,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140389392] [2020-01-16 19:09:06,336 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:06,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:06,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:06,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:06,336 INFO L87 Difference]: Start difference. First operand 1579 states and 7025 transitions. Second operand 11 states. [2020-01-16 19:09:06,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:06,552 INFO L93 Difference]: Finished difference Result 2981 states and 11763 transitions. [2020-01-16 19:09:06,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:06,552 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:06,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:06,560 INFO L225 Difference]: With dead ends: 2981 [2020-01-16 19:09:06,560 INFO L226 Difference]: Without dead ends: 2955 [2020-01-16 19:09:06,560 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:06,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2955 states. [2020-01-16 19:09:06,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2955 to 1570. [2020-01-16 19:09:06,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 19:09:06,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7005 transitions. [2020-01-16 19:09:06,626 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7005 transitions. Word has length 28 [2020-01-16 19:09:06,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:06,626 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7005 transitions. [2020-01-16 19:09:06,627 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:06,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7005 transitions. [2020-01-16 19:09:06,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:06,629 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:06,629 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:06,629 INFO L426 AbstractCegarLoop]: === Iteration 723 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:06,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:06,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1766168438, now seen corresponding path program 715 times [2020-01-16 19:09:06,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:06,629 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111619798] [2020-01-16 19:09:06,629 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:06,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:07,161 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 19:09:07,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:07,169 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111619798] [2020-01-16 19:09:07,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:07,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:07,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239726386] [2020-01-16 19:09:07,169 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:07,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:07,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:07,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:07,169 INFO L87 Difference]: Start difference. First operand 1570 states and 7005 transitions. Second operand 11 states. [2020-01-16 19:09:07,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:07,352 INFO L93 Difference]: Finished difference Result 2978 states and 11766 transitions. [2020-01-16 19:09:07,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:07,353 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:07,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:07,360 INFO L225 Difference]: With dead ends: 2978 [2020-01-16 19:09:07,361 INFO L226 Difference]: Without dead ends: 2960 [2020-01-16 19:09:07,361 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:07,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2960 states. [2020-01-16 19:09:07,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2960 to 1578. [2020-01-16 19:09:07,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 19:09:07,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7027 transitions. [2020-01-16 19:09:07,428 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7027 transitions. Word has length 28 [2020-01-16 19:09:07,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:07,428 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7027 transitions. [2020-01-16 19:09:07,428 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:07,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7027 transitions. [2020-01-16 19:09:07,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:07,430 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:07,430 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:07,430 INFO L426 AbstractCegarLoop]: === Iteration 724 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:07,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:07,431 INFO L82 PathProgramCache]: Analyzing trace with hash 467939056, now seen corresponding path program 716 times [2020-01-16 19:09:07,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:07,431 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117823322] [2020-01-16 19:09:07,431 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:07,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:07,951 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 19:09:07,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:07,958 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117823322] [2020-01-16 19:09:07,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:07,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:07,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375632507] [2020-01-16 19:09:07,959 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:07,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:07,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:07,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:07,959 INFO L87 Difference]: Start difference. First operand 1578 states and 7027 transitions. Second operand 11 states. [2020-01-16 19:09:08,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:08,177 INFO L93 Difference]: Finished difference Result 2974 states and 11754 transitions. [2020-01-16 19:09:08,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:08,177 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:08,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:08,184 INFO L225 Difference]: With dead ends: 2974 [2020-01-16 19:09:08,184 INFO L226 Difference]: Without dead ends: 2956 [2020-01-16 19:09:08,185 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:08,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2020-01-16 19:09:08,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 1574. [2020-01-16 19:09:08,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 19:09:08,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7016 transitions. [2020-01-16 19:09:08,251 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7016 transitions. Word has length 28 [2020-01-16 19:09:08,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:08,251 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7016 transitions. [2020-01-16 19:09:08,251 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:08,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7016 transitions. [2020-01-16 19:09:08,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:08,254 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:08,254 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:08,254 INFO L426 AbstractCegarLoop]: === Iteration 725 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:08,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:08,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1455713478, now seen corresponding path program 717 times [2020-01-16 19:09:08,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:08,254 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615274922] [2020-01-16 19:09:08,255 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:08,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:08,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:08,787 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615274922] [2020-01-16 19:09:08,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:08,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:08,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778656095] [2020-01-16 19:09:08,787 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:08,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:08,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:08,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:08,788 INFO L87 Difference]: Start difference. First operand 1574 states and 7016 transitions. Second operand 11 states. [2020-01-16 19:09:09,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:09,002 INFO L93 Difference]: Finished difference Result 2984 states and 11777 transitions. [2020-01-16 19:09:09,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:09,003 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:09,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:09,010 INFO L225 Difference]: With dead ends: 2984 [2020-01-16 19:09:09,010 INFO L226 Difference]: Without dead ends: 2966 [2020-01-16 19:09:09,010 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:09,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2966 states. [2020-01-16 19:09:09,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2966 to 1581. [2020-01-16 19:09:09,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 19:09:09,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7029 transitions. [2020-01-16 19:09:09,078 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7029 transitions. Word has length 28 [2020-01-16 19:09:09,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:09,078 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7029 transitions. [2020-01-16 19:09:09,078 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:09,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7029 transitions. [2020-01-16 19:09:09,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:09,080 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:09,080 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:09,080 INFO L426 AbstractCegarLoop]: === Iteration 726 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:09,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:09,081 INFO L82 PathProgramCache]: Analyzing trace with hash 884258672, now seen corresponding path program 718 times [2020-01-16 19:09:09,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:09,081 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562574019] [2020-01-16 19:09:09,081 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:09,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:09,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:09,623 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562574019] [2020-01-16 19:09:09,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:09,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:09,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799267135] [2020-01-16 19:09:09,623 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:09,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:09,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:09,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:09,624 INFO L87 Difference]: Start difference. First operand 1581 states and 7029 transitions. Second operand 11 states. [2020-01-16 19:09:09,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:09,868 INFO L93 Difference]: Finished difference Result 2983 states and 11768 transitions. [2020-01-16 19:09:09,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:09,869 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:09,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:09,876 INFO L225 Difference]: With dead ends: 2983 [2020-01-16 19:09:09,877 INFO L226 Difference]: Without dead ends: 2959 [2020-01-16 19:09:09,877 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:09,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2959 states. [2020-01-16 19:09:09,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2959 to 1574. [2020-01-16 19:09:09,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 19:09:09,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7012 transitions. [2020-01-16 19:09:09,944 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7012 transitions. Word has length 28 [2020-01-16 19:09:09,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:09,944 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7012 transitions. [2020-01-16 19:09:09,944 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:09,944 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7012 transitions. [2020-01-16 19:09:09,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:09,946 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:09,947 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:09,947 INFO L426 AbstractCegarLoop]: === Iteration 727 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:09,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:09,947 INFO L82 PathProgramCache]: Analyzing trace with hash -67290746, now seen corresponding path program 719 times [2020-01-16 19:09:09,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:09,947 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995385968] [2020-01-16 19:09:09,947 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:09,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:10,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:10,472 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995385968] [2020-01-16 19:09:10,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:10,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:10,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939558903] [2020-01-16 19:09:10,472 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:10,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:10,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:10,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:10,472 INFO L87 Difference]: Start difference. First operand 1574 states and 7012 transitions. Second operand 11 states. [2020-01-16 19:09:10,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:10,699 INFO L93 Difference]: Finished difference Result 2973 states and 11748 transitions. [2020-01-16 19:09:10,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:10,700 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:10,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:10,707 INFO L225 Difference]: With dead ends: 2973 [2020-01-16 19:09:10,707 INFO L226 Difference]: Without dead ends: 2959 [2020-01-16 19:09:10,708 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:10,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2959 states. [2020-01-16 19:09:10,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2959 to 1578. [2020-01-16 19:09:10,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 19:09:10,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7019 transitions. [2020-01-16 19:09:10,775 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7019 transitions. Word has length 28 [2020-01-16 19:09:10,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:10,775 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7019 transitions. [2020-01-16 19:09:10,775 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:10,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7019 transitions. [2020-01-16 19:09:10,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:10,777 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:10,777 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:10,777 INFO L426 AbstractCegarLoop]: === Iteration 728 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:10,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:10,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1422114250, now seen corresponding path program 720 times [2020-01-16 19:09:10,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:10,778 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188152041] [2020-01-16 19:09:10,778 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:10,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:11,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:11,301 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188152041] [2020-01-16 19:09:11,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:11,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:11,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663971253] [2020-01-16 19:09:11,302 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:11,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:11,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:11,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:11,302 INFO L87 Difference]: Start difference. First operand 1578 states and 7019 transitions. Second operand 11 states. [2020-01-16 19:09:11,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:11,542 INFO L93 Difference]: Finished difference Result 2976 states and 11750 transitions. [2020-01-16 19:09:11,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:11,543 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:11,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:11,550 INFO L225 Difference]: With dead ends: 2976 [2020-01-16 19:09:11,550 INFO L226 Difference]: Without dead ends: 2926 [2020-01-16 19:09:11,550 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:11,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2020-01-16 19:09:11,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 1545. [2020-01-16 19:09:11,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1545 states. [2020-01-16 19:09:11,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1545 states to 1545 states and 6955 transitions. [2020-01-16 19:09:11,616 INFO L78 Accepts]: Start accepts. Automaton has 1545 states and 6955 transitions. Word has length 28 [2020-01-16 19:09:11,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:11,616 INFO L478 AbstractCegarLoop]: Abstraction has 1545 states and 6955 transitions. [2020-01-16 19:09:11,617 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:11,617 INFO L276 IsEmpty]: Start isEmpty. Operand 1545 states and 6955 transitions. [2020-01-16 19:09:11,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:11,619 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:11,619 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:11,619 INFO L426 AbstractCegarLoop]: === Iteration 729 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:11,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:11,619 INFO L82 PathProgramCache]: Analyzing trace with hash -645301276, now seen corresponding path program 721 times [2020-01-16 19:09:11,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:11,619 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266451773] [2020-01-16 19:09:11,619 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:11,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:12,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:12,154 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266451773] [2020-01-16 19:09:12,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:12,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:12,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941811322] [2020-01-16 19:09:12,154 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:12,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:12,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:12,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:12,155 INFO L87 Difference]: Start difference. First operand 1545 states and 6955 transitions. Second operand 11 states. [2020-01-16 19:09:12,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:12,420 INFO L93 Difference]: Finished difference Result 2968 states and 11774 transitions. [2020-01-16 19:09:12,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:12,420 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:12,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:12,428 INFO L225 Difference]: With dead ends: 2968 [2020-01-16 19:09:12,428 INFO L226 Difference]: Without dead ends: 2953 [2020-01-16 19:09:12,429 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:12,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2953 states. [2020-01-16 19:09:12,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2953 to 1581. [2020-01-16 19:09:12,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 19:09:12,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7101 transitions. [2020-01-16 19:09:12,495 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7101 transitions. Word has length 28 [2020-01-16 19:09:12,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:12,495 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7101 transitions. [2020-01-16 19:09:12,495 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:12,495 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7101 transitions. [2020-01-16 19:09:12,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:12,497 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:12,497 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:12,497 INFO L426 AbstractCegarLoop]: === Iteration 730 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:12,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:12,498 INFO L82 PathProgramCache]: Analyzing trace with hash 99401222, now seen corresponding path program 722 times [2020-01-16 19:09:12,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:12,498 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660839396] [2020-01-16 19:09:12,498 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:12,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:13,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:13,044 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660839396] [2020-01-16 19:09:13,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:13,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:13,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207224307] [2020-01-16 19:09:13,045 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:13,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:13,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:13,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:13,045 INFO L87 Difference]: Start difference. First operand 1581 states and 7101 transitions. Second operand 11 states. [2020-01-16 19:09:13,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:13,313 INFO L93 Difference]: Finished difference Result 2969 states and 11771 transitions. [2020-01-16 19:09:13,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:13,313 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:13,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:13,321 INFO L225 Difference]: With dead ends: 2969 [2020-01-16 19:09:13,321 INFO L226 Difference]: Without dead ends: 2948 [2020-01-16 19:09:13,321 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:13,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2948 states. [2020-01-16 19:09:13,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2948 to 1576. [2020-01-16 19:09:13,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 19:09:13,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7087 transitions. [2020-01-16 19:09:13,389 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7087 transitions. Word has length 28 [2020-01-16 19:09:13,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:13,389 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7087 transitions. [2020-01-16 19:09:13,389 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:13,389 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7087 transitions. [2020-01-16 19:09:13,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:13,391 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:13,391 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:13,391 INFO L426 AbstractCegarLoop]: === Iteration 731 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:13,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:13,391 INFO L82 PathProgramCache]: Analyzing trace with hash 965639682, now seen corresponding path program 723 times [2020-01-16 19:09:13,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:13,392 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153967405] [2020-01-16 19:09:13,392 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:13,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:13,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:13,930 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153967405] [2020-01-16 19:09:13,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:13,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:13,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134029229] [2020-01-16 19:09:13,931 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:13,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:13,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:13,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:13,931 INFO L87 Difference]: Start difference. First operand 1576 states and 7087 transitions. Second operand 11 states. [2020-01-16 19:09:14,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:14,200 INFO L93 Difference]: Finished difference Result 2973 states and 11778 transitions. [2020-01-16 19:09:14,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:14,200 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:14,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:14,207 INFO L225 Difference]: With dead ends: 2973 [2020-01-16 19:09:14,208 INFO L226 Difference]: Without dead ends: 2958 [2020-01-16 19:09:14,208 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:14,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2958 states. [2020-01-16 19:09:14,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2958 to 1582. [2020-01-16 19:09:14,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 19:09:14,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7098 transitions. [2020-01-16 19:09:14,276 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7098 transitions. Word has length 28 [2020-01-16 19:09:14,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:14,276 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7098 transitions. [2020-01-16 19:09:14,276 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:14,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7098 transitions. [2020-01-16 19:09:14,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:14,279 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:14,279 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:14,279 INFO L426 AbstractCegarLoop]: === Iteration 732 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:14,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:14,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1839922618, now seen corresponding path program 724 times [2020-01-16 19:09:14,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:14,279 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055532669] [2020-01-16 19:09:14,279 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:14,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:14,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:14,805 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055532669] [2020-01-16 19:09:14,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:14,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:14,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64773699] [2020-01-16 19:09:14,805 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:14,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:14,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:14,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:14,805 INFO L87 Difference]: Start difference. First operand 1582 states and 7098 transitions. Second operand 11 states. [2020-01-16 19:09:14,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:14,977 INFO L93 Difference]: Finished difference Result 2978 states and 11782 transitions. [2020-01-16 19:09:14,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:14,978 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:14,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:14,985 INFO L225 Difference]: With dead ends: 2978 [2020-01-16 19:09:14,985 INFO L226 Difference]: Without dead ends: 2952 [2020-01-16 19:09:14,985 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:15,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2020-01-16 19:09:15,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 1576. [2020-01-16 19:09:15,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 19:09:15,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7081 transitions. [2020-01-16 19:09:15,051 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7081 transitions. Word has length 28 [2020-01-16 19:09:15,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:15,051 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7081 transitions. [2020-01-16 19:09:15,051 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:15,051 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7081 transitions. [2020-01-16 19:09:15,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:15,053 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:15,053 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:15,053 INFO L426 AbstractCegarLoop]: === Iteration 733 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:15,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:15,054 INFO L82 PathProgramCache]: Analyzing trace with hash -973684158, now seen corresponding path program 725 times [2020-01-16 19:09:15,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:15,054 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195701934] [2020-01-16 19:09:15,054 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:15,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:15,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:15,593 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195701934] [2020-01-16 19:09:15,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:15,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:15,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710089612] [2020-01-16 19:09:15,594 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:15,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:15,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:15,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:15,594 INFO L87 Difference]: Start difference. First operand 1576 states and 7081 transitions. Second operand 11 states. [2020-01-16 19:09:15,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:15,793 INFO L93 Difference]: Finished difference Result 2976 states and 11779 transitions. [2020-01-16 19:09:15,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:15,793 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:15,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:15,801 INFO L225 Difference]: With dead ends: 2976 [2020-01-16 19:09:15,801 INFO L226 Difference]: Without dead ends: 2960 [2020-01-16 19:09:15,801 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:15,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2960 states. [2020-01-16 19:09:15,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2960 to 1583. [2020-01-16 19:09:15,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 19:09:15,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7094 transitions. [2020-01-16 19:09:15,897 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7094 transitions. Word has length 28 [2020-01-16 19:09:15,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:15,897 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7094 transitions. [2020-01-16 19:09:15,897 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:15,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7094 transitions. [2020-01-16 19:09:15,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:15,899 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:15,899 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:15,900 INFO L426 AbstractCegarLoop]: === Iteration 734 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:15,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:15,900 INFO L82 PathProgramCache]: Analyzing trace with hash -228981660, now seen corresponding path program 726 times [2020-01-16 19:09:15,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:15,900 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405042976] [2020-01-16 19:09:15,900 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:15,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:16,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:16,446 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405042976] [2020-01-16 19:09:16,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:16,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:16,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112600377] [2020-01-16 19:09:16,446 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:16,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:16,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:16,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:16,447 INFO L87 Difference]: Start difference. First operand 1583 states and 7094 transitions. Second operand 11 states. [2020-01-16 19:09:16,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:16,683 INFO L93 Difference]: Finished difference Result 2980 states and 11780 transitions. [2020-01-16 19:09:16,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:16,683 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:16,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:16,690 INFO L225 Difference]: With dead ends: 2980 [2020-01-16 19:09:16,690 INFO L226 Difference]: Without dead ends: 2947 [2020-01-16 19:09:16,691 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:16,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2947 states. [2020-01-16 19:09:16,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2947 to 1570. [2020-01-16 19:09:16,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 19:09:16,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7064 transitions. [2020-01-16 19:09:16,758 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7064 transitions. Word has length 28 [2020-01-16 19:09:16,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:16,758 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7064 transitions. [2020-01-16 19:09:16,758 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:16,758 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7064 transitions. [2020-01-16 19:09:16,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:16,760 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:16,760 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:16,761 INFO L426 AbstractCegarLoop]: === Iteration 735 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:16,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:16,761 INFO L82 PathProgramCache]: Analyzing trace with hash 74711198, now seen corresponding path program 727 times [2020-01-16 19:09:16,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:16,761 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009422660] [2020-01-16 19:09:16,761 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:16,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:17,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:17,285 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009422660] [2020-01-16 19:09:17,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:17,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:17,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514930899] [2020-01-16 19:09:17,285 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:17,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:17,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:17,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:17,286 INFO L87 Difference]: Start difference. First operand 1570 states and 7064 transitions. Second operand 11 states. [2020-01-16 19:09:17,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:17,479 INFO L93 Difference]: Finished difference Result 2963 states and 11758 transitions. [2020-01-16 19:09:17,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:17,480 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:17,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:17,487 INFO L225 Difference]: With dead ends: 2963 [2020-01-16 19:09:17,488 INFO L226 Difference]: Without dead ends: 2948 [2020-01-16 19:09:17,488 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:17,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2948 states. [2020-01-16 19:09:17,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2948 to 1580. [2020-01-16 19:09:17,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 19:09:17,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7092 transitions. [2020-01-16 19:09:17,554 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7092 transitions. Word has length 28 [2020-01-16 19:09:17,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:17,554 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7092 transitions. [2020-01-16 19:09:17,554 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:17,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7092 transitions. [2020-01-16 19:09:17,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:17,557 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:17,557 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:17,557 INFO L426 AbstractCegarLoop]: === Iteration 736 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:17,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:17,557 INFO L82 PathProgramCache]: Analyzing trace with hash 819413696, now seen corresponding path program 728 times [2020-01-16 19:09:17,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:17,557 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458187974] [2020-01-16 19:09:17,557 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:17,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:18,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:18,093 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458187974] [2020-01-16 19:09:18,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:18,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:18,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141408757] [2020-01-16 19:09:18,094 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:18,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:18,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:18,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:18,094 INFO L87 Difference]: Start difference. First operand 1580 states and 7092 transitions. Second operand 11 states. [2020-01-16 19:09:18,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:18,363 INFO L93 Difference]: Finished difference Result 2964 states and 11755 transitions. [2020-01-16 19:09:18,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:18,364 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:18,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:18,371 INFO L225 Difference]: With dead ends: 2964 [2020-01-16 19:09:18,371 INFO L226 Difference]: Without dead ends: 2943 [2020-01-16 19:09:18,372 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:18,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2943 states. [2020-01-16 19:09:18,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2943 to 1575. [2020-01-16 19:09:18,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:09:18,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7078 transitions. [2020-01-16 19:09:18,439 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7078 transitions. Word has length 28 [2020-01-16 19:09:18,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:18,439 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7078 transitions. [2020-01-16 19:09:18,440 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:18,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7078 transitions. [2020-01-16 19:09:18,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:18,442 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:18,442 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:18,442 INFO L426 AbstractCegarLoop]: === Iteration 737 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:18,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:18,442 INFO L82 PathProgramCache]: Analyzing trace with hash -998374182, now seen corresponding path program 729 times [2020-01-16 19:09:18,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:18,442 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125204664] [2020-01-16 19:09:18,443 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:18,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:18,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:18,962 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125204664] [2020-01-16 19:09:18,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:18,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:18,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711636969] [2020-01-16 19:09:18,962 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:18,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:18,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:18,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:18,963 INFO L87 Difference]: Start difference. First operand 1575 states and 7078 transitions. Second operand 11 states. [2020-01-16 19:09:19,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:19,228 INFO L93 Difference]: Finished difference Result 2965 states and 11757 transitions. [2020-01-16 19:09:19,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:19,228 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:19,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:19,236 INFO L225 Difference]: With dead ends: 2965 [2020-01-16 19:09:19,236 INFO L226 Difference]: Without dead ends: 2950 [2020-01-16 19:09:19,236 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:19,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2020-01-16 19:09:19,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 1580. [2020-01-16 19:09:19,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 19:09:19,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7087 transitions. [2020-01-16 19:09:19,302 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7087 transitions. Word has length 28 [2020-01-16 19:09:19,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:19,303 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7087 transitions. [2020-01-16 19:09:19,303 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:19,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7087 transitions. [2020-01-16 19:09:19,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:19,305 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:19,305 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:19,305 INFO L426 AbstractCegarLoop]: === Iteration 738 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:19,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:19,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1235733312, now seen corresponding path program 730 times [2020-01-16 19:09:19,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:19,305 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084900587] [2020-01-16 19:09:19,306 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:19,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:19,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:19,839 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084900587] [2020-01-16 19:09:19,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:19,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:19,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254291669] [2020-01-16 19:09:19,839 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:19,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:19,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:19,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:19,839 INFO L87 Difference]: Start difference. First operand 1580 states and 7087 transitions. Second operand 11 states. [2020-01-16 19:09:20,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:20,046 INFO L93 Difference]: Finished difference Result 2968 states and 11758 transitions. [2020-01-16 19:09:20,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:20,047 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:20,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:20,054 INFO L225 Difference]: With dead ends: 2968 [2020-01-16 19:09:20,054 INFO L226 Difference]: Without dead ends: 2945 [2020-01-16 19:09:20,055 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:20,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2945 states. [2020-01-16 19:09:20,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2945 to 1575. [2020-01-16 19:09:20,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:09:20,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7073 transitions. [2020-01-16 19:09:20,126 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7073 transitions. Word has length 28 [2020-01-16 19:09:20,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:20,126 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7073 transitions. [2020-01-16 19:09:20,126 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:20,126 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7073 transitions. [2020-01-16 19:09:20,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:20,129 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:20,129 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:20,129 INFO L426 AbstractCegarLoop]: === Iteration 739 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:20,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:20,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1357269274, now seen corresponding path program 731 times [2020-01-16 19:09:20,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:20,130 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195934066] [2020-01-16 19:09:20,130 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:20,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:20,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:20,652 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195934066] [2020-01-16 19:09:20,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:20,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:20,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597400245] [2020-01-16 19:09:20,652 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:20,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:20,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:20,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:20,652 INFO L87 Difference]: Start difference. First operand 1575 states and 7073 transitions. Second operand 11 states. [2020-01-16 19:09:20,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:20,920 INFO L93 Difference]: Finished difference Result 2968 states and 11759 transitions. [2020-01-16 19:09:20,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:20,921 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:20,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:20,928 INFO L225 Difference]: With dead ends: 2968 [2020-01-16 19:09:20,928 INFO L226 Difference]: Without dead ends: 2952 [2020-01-16 19:09:20,928 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:20,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2020-01-16 19:09:20,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 1581. [2020-01-16 19:09:20,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 19:09:20,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7084 transitions. [2020-01-16 19:09:20,995 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7084 transitions. Word has length 28 [2020-01-16 19:09:20,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:20,995 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7084 transitions. [2020-01-16 19:09:20,995 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:20,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7084 transitions. [2020-01-16 19:09:20,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:20,997 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:20,997 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:20,997 INFO L426 AbstractCegarLoop]: === Iteration 740 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:20,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:20,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1448293026, now seen corresponding path program 732 times [2020-01-16 19:09:20,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:20,998 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247577421] [2020-01-16 19:09:20,998 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:20,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:21,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:21,525 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247577421] [2020-01-16 19:09:21,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:21,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:21,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072631010] [2020-01-16 19:09:21,525 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:21,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:21,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:21,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:21,526 INFO L87 Difference]: Start difference. First operand 1581 states and 7084 transitions. Second operand 11 states. [2020-01-16 19:09:21,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:21,698 INFO L93 Difference]: Finished difference Result 2970 states and 11757 transitions. [2020-01-16 19:09:21,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:21,699 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:21,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:21,707 INFO L225 Difference]: With dead ends: 2970 [2020-01-16 19:09:21,707 INFO L226 Difference]: Without dead ends: 2941 [2020-01-16 19:09:21,707 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:21,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2941 states. [2020-01-16 19:09:21,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2941 to 1570. [2020-01-16 19:09:21,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 19:09:21,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7059 transitions. [2020-01-16 19:09:21,773 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7059 transitions. Word has length 28 [2020-01-16 19:09:21,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:21,773 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7059 transitions. [2020-01-16 19:09:21,773 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:21,773 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7059 transitions. [2020-01-16 19:09:21,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:21,775 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:21,775 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:21,775 INFO L426 AbstractCegarLoop]: === Iteration 741 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:21,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:21,775 INFO L82 PathProgramCache]: Analyzing trace with hash 85214302, now seen corresponding path program 733 times [2020-01-16 19:09:21,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:21,776 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673853306] [2020-01-16 19:09:21,776 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:21,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:22,323 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 29 [2020-01-16 19:09:22,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:22,330 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673853306] [2020-01-16 19:09:22,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:22,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:22,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709663272] [2020-01-16 19:09:22,330 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:22,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:22,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:22,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:22,330 INFO L87 Difference]: Start difference. First operand 1570 states and 7059 transitions. Second operand 11 states. [2020-01-16 19:09:22,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:22,519 INFO L93 Difference]: Finished difference Result 2979 states and 11785 transitions. [2020-01-16 19:09:22,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:22,519 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:22,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:22,527 INFO L225 Difference]: With dead ends: 2979 [2020-01-16 19:09:22,527 INFO L226 Difference]: Without dead ends: 2964 [2020-01-16 19:09:22,527 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:22,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2964 states. [2020-01-16 19:09:22,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2964 to 1583. [2020-01-16 19:09:22,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 19:09:22,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7094 transitions. [2020-01-16 19:09:22,595 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7094 transitions. Word has length 28 [2020-01-16 19:09:22,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:22,595 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7094 transitions. [2020-01-16 19:09:22,595 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:22,595 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7094 transitions. [2020-01-16 19:09:22,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:22,597 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:22,597 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:22,597 INFO L426 AbstractCegarLoop]: === Iteration 742 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:22,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:22,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1574619298, now seen corresponding path program 734 times [2020-01-16 19:09:22,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:22,598 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529783584] [2020-01-16 19:09:22,598 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:22,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:23,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:23,120 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529783584] [2020-01-16 19:09:23,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:23,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:23,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601715399] [2020-01-16 19:09:23,121 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:23,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:23,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:23,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:23,121 INFO L87 Difference]: Start difference. First operand 1583 states and 7094 transitions. Second operand 11 states. [2020-01-16 19:09:23,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:23,261 INFO L93 Difference]: Finished difference Result 2984 states and 11789 transitions. [2020-01-16 19:09:23,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:23,261 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:23,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:23,268 INFO L225 Difference]: With dead ends: 2984 [2020-01-16 19:09:23,269 INFO L226 Difference]: Without dead ends: 2958 [2020-01-16 19:09:23,269 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:23,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2958 states. [2020-01-16 19:09:23,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2958 to 1577. [2020-01-16 19:09:23,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 19:09:23,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7077 transitions. [2020-01-16 19:09:23,335 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7077 transitions. Word has length 28 [2020-01-16 19:09:23,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:23,335 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7077 transitions. [2020-01-16 19:09:23,335 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:23,336 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7077 transitions. [2020-01-16 19:09:23,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:23,338 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:23,338 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:23,338 INFO L426 AbstractCegarLoop]: === Iteration 743 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:23,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:23,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1696155260, now seen corresponding path program 735 times [2020-01-16 19:09:23,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:23,338 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366922075] [2020-01-16 19:09:23,338 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:23,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:23,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:23,874 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366922075] [2020-01-16 19:09:23,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:23,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:23,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145244749] [2020-01-16 19:09:23,874 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:23,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:23,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:23,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:23,874 INFO L87 Difference]: Start difference. First operand 1577 states and 7077 transitions. Second operand 11 states. [2020-01-16 19:09:24,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:24,043 INFO L93 Difference]: Finished difference Result 2976 states and 11774 transitions. [2020-01-16 19:09:24,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:24,043 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:24,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:24,050 INFO L225 Difference]: With dead ends: 2976 [2020-01-16 19:09:24,050 INFO L226 Difference]: Without dead ends: 2961 [2020-01-16 19:09:24,050 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:24,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2020-01-16 19:09:24,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 1582. [2020-01-16 19:09:24,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 19:09:24,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7086 transitions. [2020-01-16 19:09:24,117 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7086 transitions. Word has length 28 [2020-01-16 19:09:24,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:24,117 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7086 transitions. [2020-01-16 19:09:24,117 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:24,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7086 transitions. [2020-01-16 19:09:24,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:24,119 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:24,119 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:24,120 INFO L426 AbstractCegarLoop]: === Iteration 744 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:24,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:24,120 INFO L82 PathProgramCache]: Analyzing trace with hash -364704542, now seen corresponding path program 736 times [2020-01-16 19:09:24,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:24,120 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752666451] [2020-01-16 19:09:24,120 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:24,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:24,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:24,644 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752666451] [2020-01-16 19:09:24,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:24,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:24,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156506449] [2020-01-16 19:09:24,644 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:24,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:24,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:24,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:24,645 INFO L87 Difference]: Start difference. First operand 1582 states and 7086 transitions. Second operand 11 states. [2020-01-16 19:09:24,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:24,811 INFO L93 Difference]: Finished difference Result 2979 states and 11775 transitions. [2020-01-16 19:09:24,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:24,812 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:24,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:24,819 INFO L225 Difference]: With dead ends: 2979 [2020-01-16 19:09:24,819 INFO L226 Difference]: Without dead ends: 2956 [2020-01-16 19:09:24,819 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:24,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2020-01-16 19:09:24,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 1577. [2020-01-16 19:09:24,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 19:09:24,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7072 transitions. [2020-01-16 19:09:24,885 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7072 transitions. Word has length 28 [2020-01-16 19:09:24,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:24,885 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7072 transitions. [2020-01-16 19:09:24,885 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:24,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7072 transitions. [2020-01-16 19:09:24,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:24,888 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:24,888 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:24,888 INFO L426 AbstractCegarLoop]: === Iteration 745 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:24,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:24,888 INFO L82 PathProgramCache]: Analyzing trace with hash 2112474876, now seen corresponding path program 737 times [2020-01-16 19:09:24,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:24,888 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546878488] [2020-01-16 19:09:24,888 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:24,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:25,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:25,450 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546878488] [2020-01-16 19:09:25,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:25,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:25,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225706302] [2020-01-16 19:09:25,450 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:25,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:25,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:25,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:25,451 INFO L87 Difference]: Start difference. First operand 1577 states and 7072 transitions. Second operand 11 states. [2020-01-16 19:09:25,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:25,609 INFO L93 Difference]: Finished difference Result 2991 states and 11799 transitions. [2020-01-16 19:09:25,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:25,610 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:25,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:25,617 INFO L225 Difference]: With dead ends: 2991 [2020-01-16 19:09:25,617 INFO L226 Difference]: Without dead ends: 2971 [2020-01-16 19:09:25,617 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:25,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2971 states. [2020-01-16 19:09:25,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2971 to 1587. [2020-01-16 19:09:25,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1587 states. [2020-01-16 19:09:25,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 7089 transitions. [2020-01-16 19:09:25,684 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 7089 transitions. Word has length 28 [2020-01-16 19:09:25,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:25,684 INFO L478 AbstractCegarLoop]: Abstraction has 1587 states and 7089 transitions. [2020-01-16 19:09:25,684 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:25,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 7089 transitions. [2020-01-16 19:09:25,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:25,686 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:25,686 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:25,686 INFO L426 AbstractCegarLoop]: === Iteration 746 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:25,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:25,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1437789922, now seen corresponding path program 738 times [2020-01-16 19:09:25,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:25,687 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049013623] [2020-01-16 19:09:25,687 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:25,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:26,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:26,229 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049013623] [2020-01-16 19:09:26,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:26,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:26,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056469647] [2020-01-16 19:09:26,229 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:26,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:26,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:26,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:26,230 INFO L87 Difference]: Start difference. First operand 1587 states and 7089 transitions. Second operand 11 states. [2020-01-16 19:09:26,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:26,412 INFO L93 Difference]: Finished difference Result 2989 states and 11787 transitions. [2020-01-16 19:09:26,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:26,413 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:26,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:26,420 INFO L225 Difference]: With dead ends: 2989 [2020-01-16 19:09:26,420 INFO L226 Difference]: Without dead ends: 2954 [2020-01-16 19:09:26,420 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:26,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2020-01-16 19:09:26,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 1570. [2020-01-16 19:09:26,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 19:09:26,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7052 transitions. [2020-01-16 19:09:26,487 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7052 transitions. Word has length 28 [2020-01-16 19:09:26,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:26,487 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7052 transitions. [2020-01-16 19:09:26,487 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:26,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7052 transitions. [2020-01-16 19:09:26,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:26,490 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:26,490 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:26,490 INFO L426 AbstractCegarLoop]: === Iteration 747 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:26,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:26,490 INFO L82 PathProgramCache]: Analyzing trace with hash 840419904, now seen corresponding path program 739 times [2020-01-16 19:09:26,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:26,490 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644879474] [2020-01-16 19:09:26,490 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:26,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:27,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:27,030 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644879474] [2020-01-16 19:09:27,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:27,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:27,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909215226] [2020-01-16 19:09:27,030 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:27,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:27,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:27,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:27,031 INFO L87 Difference]: Start difference. First operand 1570 states and 7052 transitions. Second operand 11 states. [2020-01-16 19:09:27,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:27,225 INFO L93 Difference]: Finished difference Result 2986 states and 11797 transitions. [2020-01-16 19:09:27,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:27,225 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:27,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:27,233 INFO L225 Difference]: With dead ends: 2986 [2020-01-16 19:09:27,233 INFO L226 Difference]: Without dead ends: 2970 [2020-01-16 19:09:27,233 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:27,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2970 states. [2020-01-16 19:09:27,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2970 to 1585. [2020-01-16 19:09:27,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 19:09:27,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7093 transitions. [2020-01-16 19:09:27,300 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7093 transitions. Word has length 28 [2020-01-16 19:09:27,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:27,300 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7093 transitions. [2020-01-16 19:09:27,300 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:27,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7093 transitions. [2020-01-16 19:09:27,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:27,302 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:27,302 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:27,302 INFO L426 AbstractCegarLoop]: === Iteration 748 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:27,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:27,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1585122402, now seen corresponding path program 740 times [2020-01-16 19:09:27,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:27,303 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417041348] [2020-01-16 19:09:27,303 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:27,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:27,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:27,860 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417041348] [2020-01-16 19:09:27,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:27,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:27,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143945636] [2020-01-16 19:09:27,860 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:27,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:27,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:27,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:27,861 INFO L87 Difference]: Start difference. First operand 1585 states and 7093 transitions. Second operand 11 states. [2020-01-16 19:09:27,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:27,989 INFO L93 Difference]: Finished difference Result 2990 states and 11798 transitions. [2020-01-16 19:09:27,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:27,990 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:27,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:27,997 INFO L225 Difference]: With dead ends: 2990 [2020-01-16 19:09:27,997 INFO L226 Difference]: Without dead ends: 2963 [2020-01-16 19:09:27,997 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:28,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2963 states. [2020-01-16 19:09:28,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2963 to 1578. [2020-01-16 19:09:28,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 19:09:28,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7073 transitions. [2020-01-16 19:09:28,066 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7073 transitions. Word has length 28 [2020-01-16 19:09:28,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:28,066 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7073 transitions. [2020-01-16 19:09:28,066 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:28,066 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7073 transitions. [2020-01-16 19:09:28,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:28,068 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:28,068 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:28,068 INFO L426 AbstractCegarLoop]: === Iteration 749 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:28,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:28,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1843606434, now seen corresponding path program 741 times [2020-01-16 19:09:28,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:28,069 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930706900] [2020-01-16 19:09:28,069 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:28,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:28,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:28,616 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930706900] [2020-01-16 19:09:28,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:28,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:28,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930206580] [2020-01-16 19:09:28,617 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:28,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:28,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:28,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:28,617 INFO L87 Difference]: Start difference. First operand 1578 states and 7073 transitions. Second operand 11 states. [2020-01-16 19:09:28,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:28,789 INFO L93 Difference]: Finished difference Result 2983 states and 11785 transitions. [2020-01-16 19:09:28,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:28,789 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:28,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:28,797 INFO L225 Difference]: With dead ends: 2983 [2020-01-16 19:09:28,797 INFO L226 Difference]: Without dead ends: 2967 [2020-01-16 19:09:28,797 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:28,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2967 states. [2020-01-16 19:09:28,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2967 to 1584. [2020-01-16 19:09:28,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1584 states. [2020-01-16 19:09:28,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 7084 transitions. [2020-01-16 19:09:28,866 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 7084 transitions. Word has length 28 [2020-01-16 19:09:28,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:28,866 INFO L478 AbstractCegarLoop]: Abstraction has 1584 states and 7084 transitions. [2020-01-16 19:09:28,866 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:28,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 7084 transitions. [2020-01-16 19:09:28,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:28,869 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:28,869 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:28,869 INFO L426 AbstractCegarLoop]: === Iteration 750 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:28,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:28,869 INFO L82 PathProgramCache]: Analyzing trace with hash -354201438, now seen corresponding path program 742 times [2020-01-16 19:09:28,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:28,869 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539053582] [2020-01-16 19:09:28,869 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:28,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:29,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:29,395 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539053582] [2020-01-16 19:09:29,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:29,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:29,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714028459] [2020-01-16 19:09:29,395 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:29,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:29,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:29,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:29,396 INFO L87 Difference]: Start difference. First operand 1584 states and 7084 transitions. Second operand 11 states. [2020-01-16 19:09:29,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:29,574 INFO L93 Difference]: Finished difference Result 2985 states and 11783 transitions. [2020-01-16 19:09:29,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:29,575 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:29,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:29,582 INFO L225 Difference]: With dead ends: 2985 [2020-01-16 19:09:29,582 INFO L226 Difference]: Without dead ends: 2961 [2020-01-16 19:09:29,582 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:29,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2020-01-16 19:09:29,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 1578. [2020-01-16 19:09:29,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 19:09:29,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7067 transitions. [2020-01-16 19:09:29,651 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7067 transitions. Word has length 28 [2020-01-16 19:09:29,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:29,651 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7067 transitions. [2020-01-16 19:09:29,651 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:29,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7067 transitions. [2020-01-16 19:09:29,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:29,653 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:29,653 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:29,653 INFO L426 AbstractCegarLoop]: === Iteration 751 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:29,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:29,654 INFO L82 PathProgramCache]: Analyzing trace with hash 512037022, now seen corresponding path program 743 times [2020-01-16 19:09:29,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:29,654 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685591493] [2020-01-16 19:09:29,654 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:29,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:30,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:30,197 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685591493] [2020-01-16 19:09:30,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:30,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:30,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351235513] [2020-01-16 19:09:30,197 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:30,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:30,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:30,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:30,198 INFO L87 Difference]: Start difference. First operand 1578 states and 7067 transitions. Second operand 11 states. [2020-01-16 19:09:30,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:30,345 INFO L93 Difference]: Finished difference Result 2995 states and 11802 transitions. [2020-01-16 19:09:30,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:30,345 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:30,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:30,353 INFO L225 Difference]: With dead ends: 2995 [2020-01-16 19:09:30,353 INFO L226 Difference]: Without dead ends: 2975 [2020-01-16 19:09:30,353 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:30,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2975 states. [2020-01-16 19:09:30,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2975 to 1588. [2020-01-16 19:09:30,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1588 states. [2020-01-16 19:09:30,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 7084 transitions. [2020-01-16 19:09:30,427 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 7084 transitions. Word has length 28 [2020-01-16 19:09:30,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:30,427 INFO L478 AbstractCegarLoop]: Abstraction has 1588 states and 7084 transitions. [2020-01-16 19:09:30,427 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:30,427 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 7084 transitions. [2020-01-16 19:09:30,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:30,430 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:30,430 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:30,430 INFO L426 AbstractCegarLoop]: === Iteration 752 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:30,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:30,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1256739520, now seen corresponding path program 744 times [2020-01-16 19:09:30,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:30,431 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722496598] [2020-01-16 19:09:30,431 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:30,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:30,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:30,977 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722496598] [2020-01-16 19:09:30,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:30,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:30,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942028040] [2020-01-16 19:09:30,978 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:30,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:30,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:30,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:30,978 INFO L87 Difference]: Start difference. First operand 1588 states and 7084 transitions. Second operand 11 states. [2020-01-16 19:09:31,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:31,156 INFO L93 Difference]: Finished difference Result 2993 states and 11790 transitions. [2020-01-16 19:09:31,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:31,156 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:31,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:31,163 INFO L225 Difference]: With dead ends: 2993 [2020-01-16 19:09:31,163 INFO L226 Difference]: Without dead ends: 2950 [2020-01-16 19:09:31,163 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:31,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2020-01-16 19:09:31,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 1563. [2020-01-16 19:09:31,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 19:09:31,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7032 transitions. [2020-01-16 19:09:31,229 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7032 transitions. Word has length 28 [2020-01-16 19:09:31,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:31,229 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7032 transitions. [2020-01-16 19:09:31,229 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:31,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7032 transitions. [2020-01-16 19:09:31,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:31,231 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:31,231 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:31,232 INFO L426 AbstractCegarLoop]: === Iteration 753 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:31,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:31,232 INFO L82 PathProgramCache]: Analyzing trace with hash -725043348, now seen corresponding path program 745 times [2020-01-16 19:09:31,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:31,232 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31587246] [2020-01-16 19:09:31,232 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:31,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:31,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:31,761 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31587246] [2020-01-16 19:09:31,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:31,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:31,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296034257] [2020-01-16 19:09:31,761 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:31,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:31,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:31,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:31,762 INFO L87 Difference]: Start difference. First operand 1563 states and 7032 transitions. Second operand 11 states. [2020-01-16 19:09:31,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:31,964 INFO L93 Difference]: Finished difference Result 2962 states and 11754 transitions. [2020-01-16 19:09:31,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:31,964 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:31,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:31,972 INFO L225 Difference]: With dead ends: 2962 [2020-01-16 19:09:31,972 INFO L226 Difference]: Without dead ends: 2947 [2020-01-16 19:09:31,972 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:32,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2947 states. [2020-01-16 19:09:32,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2947 to 1580. [2020-01-16 19:09:32,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 19:09:32,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7091 transitions. [2020-01-16 19:09:32,040 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7091 transitions. Word has length 28 [2020-01-16 19:09:32,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:32,041 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7091 transitions. [2020-01-16 19:09:32,041 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:32,041 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7091 transitions. [2020-01-16 19:09:32,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:32,043 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:32,043 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:32,043 INFO L426 AbstractCegarLoop]: === Iteration 754 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:32,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:32,044 INFO L82 PathProgramCache]: Analyzing trace with hash 19659150, now seen corresponding path program 746 times [2020-01-16 19:09:32,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:32,044 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20684700] [2020-01-16 19:09:32,044 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:32,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:32,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:32,575 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20684700] [2020-01-16 19:09:32,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:32,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:32,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741765180] [2020-01-16 19:09:32,575 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:32,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:32,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:32,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:32,576 INFO L87 Difference]: Start difference. First operand 1580 states and 7091 transitions. Second operand 11 states. [2020-01-16 19:09:32,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:32,760 INFO L93 Difference]: Finished difference Result 2963 states and 11751 transitions. [2020-01-16 19:09:32,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:32,761 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:32,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:32,768 INFO L225 Difference]: With dead ends: 2963 [2020-01-16 19:09:32,768 INFO L226 Difference]: Without dead ends: 2942 [2020-01-16 19:09:32,768 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:32,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2020-01-16 19:09:32,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 1575. [2020-01-16 19:09:32,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:09:32,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7077 transitions. [2020-01-16 19:09:32,836 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7077 transitions. Word has length 28 [2020-01-16 19:09:32,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:32,836 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7077 transitions. [2020-01-16 19:09:32,836 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:32,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7077 transitions. [2020-01-16 19:09:32,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:32,838 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:32,838 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:32,839 INFO L426 AbstractCegarLoop]: === Iteration 755 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:32,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:32,839 INFO L82 PathProgramCache]: Analyzing trace with hash 885897610, now seen corresponding path program 747 times [2020-01-16 19:09:32,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:32,839 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635397421] [2020-01-16 19:09:32,839 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:32,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:33,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:33,361 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635397421] [2020-01-16 19:09:33,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:33,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:33,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209955642] [2020-01-16 19:09:33,361 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:33,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:33,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:33,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:33,362 INFO L87 Difference]: Start difference. First operand 1575 states and 7077 transitions. Second operand 11 states. [2020-01-16 19:09:33,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:33,536 INFO L93 Difference]: Finished difference Result 2967 states and 11758 transitions. [2020-01-16 19:09:33,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:33,537 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:33,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:33,544 INFO L225 Difference]: With dead ends: 2967 [2020-01-16 19:09:33,545 INFO L226 Difference]: Without dead ends: 2952 [2020-01-16 19:09:33,545 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:33,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2020-01-16 19:09:33,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 1581. [2020-01-16 19:09:33,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 19:09:33,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7088 transitions. [2020-01-16 19:09:33,613 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7088 transitions. Word has length 28 [2020-01-16 19:09:33,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:33,613 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7088 transitions. [2020-01-16 19:09:33,613 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:33,613 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7088 transitions. [2020-01-16 19:09:33,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:33,615 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:33,615 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:33,616 INFO L426 AbstractCegarLoop]: === Iteration 756 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:33,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:33,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1919664690, now seen corresponding path program 748 times [2020-01-16 19:09:33,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:33,616 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19638051] [2020-01-16 19:09:33,616 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:33,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:34,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:34,161 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19638051] [2020-01-16 19:09:34,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:34,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:34,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642361760] [2020-01-16 19:09:34,161 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:34,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:34,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:34,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:34,162 INFO L87 Difference]: Start difference. First operand 1581 states and 7088 transitions. Second operand 11 states. [2020-01-16 19:09:34,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:34,310 INFO L93 Difference]: Finished difference Result 2972 states and 11762 transitions. [2020-01-16 19:09:34,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:34,311 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:34,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:34,318 INFO L225 Difference]: With dead ends: 2972 [2020-01-16 19:09:34,318 INFO L226 Difference]: Without dead ends: 2946 [2020-01-16 19:09:34,318 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:34,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2946 states. [2020-01-16 19:09:34,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2946 to 1575. [2020-01-16 19:09:34,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:09:34,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7071 transitions. [2020-01-16 19:09:34,386 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7071 transitions. Word has length 28 [2020-01-16 19:09:34,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:34,386 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7071 transitions. [2020-01-16 19:09:34,386 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:34,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7071 transitions. [2020-01-16 19:09:34,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:34,388 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:34,388 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:34,389 INFO L426 AbstractCegarLoop]: === Iteration 757 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:34,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:34,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1053426230, now seen corresponding path program 749 times [2020-01-16 19:09:34,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:34,389 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574622510] [2020-01-16 19:09:34,389 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:34,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:34,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:34,934 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574622510] [2020-01-16 19:09:34,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:34,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:34,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009359415] [2020-01-16 19:09:34,935 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:34,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:34,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:34,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:34,935 INFO L87 Difference]: Start difference. First operand 1575 states and 7071 transitions. Second operand 11 states. [2020-01-16 19:09:35,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:35,104 INFO L93 Difference]: Finished difference Result 2970 states and 11759 transitions. [2020-01-16 19:09:35,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:35,105 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:35,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:35,112 INFO L225 Difference]: With dead ends: 2970 [2020-01-16 19:09:35,113 INFO L226 Difference]: Without dead ends: 2954 [2020-01-16 19:09:35,113 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:35,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2020-01-16 19:09:35,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 1582. [2020-01-16 19:09:35,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 19:09:35,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7084 transitions. [2020-01-16 19:09:35,180 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7084 transitions. Word has length 28 [2020-01-16 19:09:35,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:35,180 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7084 transitions. [2020-01-16 19:09:35,180 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:35,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7084 transitions. [2020-01-16 19:09:35,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:35,182 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:35,182 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:35,183 INFO L426 AbstractCegarLoop]: === Iteration 758 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:35,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:35,183 INFO L82 PathProgramCache]: Analyzing trace with hash -308723732, now seen corresponding path program 750 times [2020-01-16 19:09:35,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:35,183 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848390276] [2020-01-16 19:09:35,183 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:35,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:35,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:35,707 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848390276] [2020-01-16 19:09:35,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:35,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:35,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72732405] [2020-01-16 19:09:35,708 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:35,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:35,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:35,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:35,708 INFO L87 Difference]: Start difference. First operand 1582 states and 7084 transitions. Second operand 11 states. [2020-01-16 19:09:35,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:35,878 INFO L93 Difference]: Finished difference Result 2974 states and 11760 transitions. [2020-01-16 19:09:35,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:35,879 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:35,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:35,886 INFO L225 Difference]: With dead ends: 2974 [2020-01-16 19:09:35,886 INFO L226 Difference]: Without dead ends: 2941 [2020-01-16 19:09:35,886 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:35,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2941 states. [2020-01-16 19:09:35,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2941 to 1569. [2020-01-16 19:09:35,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 19:09:35,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7054 transitions. [2020-01-16 19:09:35,954 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7054 transitions. Word has length 28 [2020-01-16 19:09:35,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:35,955 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7054 transitions. [2020-01-16 19:09:35,955 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:35,955 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7054 transitions. [2020-01-16 19:09:35,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:35,957 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:35,957 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:35,957 INFO L426 AbstractCegarLoop]: === Iteration 759 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:35,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:35,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1550256474, now seen corresponding path program 751 times [2020-01-16 19:09:35,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:35,957 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314257534] [2020-01-16 19:09:35,958 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:35,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:36,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:36,488 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314257534] [2020-01-16 19:09:36,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:36,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:36,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229643013] [2020-01-16 19:09:36,489 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:36,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:36,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:36,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:36,489 INFO L87 Difference]: Start difference. First operand 1569 states and 7054 transitions. Second operand 11 states. [2020-01-16 19:09:36,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:36,661 INFO L93 Difference]: Finished difference Result 2956 states and 11736 transitions. [2020-01-16 19:09:36,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:36,661 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:36,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:36,668 INFO L225 Difference]: With dead ends: 2956 [2020-01-16 19:09:36,669 INFO L226 Difference]: Without dead ends: 2941 [2020-01-16 19:09:36,669 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:36,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2941 states. [2020-01-16 19:09:36,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2941 to 1579. [2020-01-16 19:09:36,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 19:09:36,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7082 transitions. [2020-01-16 19:09:36,737 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7082 transitions. Word has length 28 [2020-01-16 19:09:36,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:36,737 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7082 transitions. [2020-01-16 19:09:36,737 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:36,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7082 transitions. [2020-01-16 19:09:36,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:36,740 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:36,740 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:36,740 INFO L426 AbstractCegarLoop]: === Iteration 760 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:36,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:36,740 INFO L82 PathProgramCache]: Analyzing trace with hash -805553976, now seen corresponding path program 752 times [2020-01-16 19:09:36,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:36,740 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146707394] [2020-01-16 19:09:36,740 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:36,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:37,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:37,272 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146707394] [2020-01-16 19:09:37,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:37,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:37,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833865185] [2020-01-16 19:09:37,272 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:37,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:37,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:37,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:37,272 INFO L87 Difference]: Start difference. First operand 1579 states and 7082 transitions. Second operand 11 states. [2020-01-16 19:09:37,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:37,448 INFO L93 Difference]: Finished difference Result 2957 states and 11733 transitions. [2020-01-16 19:09:37,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:37,449 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:37,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:37,455 INFO L225 Difference]: With dead ends: 2957 [2020-01-16 19:09:37,456 INFO L226 Difference]: Without dead ends: 2936 [2020-01-16 19:09:37,456 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:37,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2936 states. [2020-01-16 19:09:37,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2936 to 1574. [2020-01-16 19:09:37,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 19:09:37,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7068 transitions. [2020-01-16 19:09:37,524 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7068 transitions. Word has length 28 [2020-01-16 19:09:37,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:37,524 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7068 transitions. [2020-01-16 19:09:37,524 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:37,524 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7068 transitions. [2020-01-16 19:09:37,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:37,526 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:37,526 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:37,526 INFO L426 AbstractCegarLoop]: === Iteration 761 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:37,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:37,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1136395640, now seen corresponding path program 753 times [2020-01-16 19:09:37,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:37,527 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203607368] [2020-01-16 19:09:37,527 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:37,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:38,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:38,056 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203607368] [2020-01-16 19:09:38,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:38,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:38,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176386769] [2020-01-16 19:09:38,056 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:38,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:38,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:38,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:38,057 INFO L87 Difference]: Start difference. First operand 1574 states and 7068 transitions. Second operand 11 states. [2020-01-16 19:09:38,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:38,276 INFO L93 Difference]: Finished difference Result 2957 states and 11733 transitions. [2020-01-16 19:09:38,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:38,276 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:38,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:38,283 INFO L225 Difference]: With dead ends: 2957 [2020-01-16 19:09:38,283 INFO L226 Difference]: Without dead ends: 2942 [2020-01-16 19:09:38,283 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:38,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2020-01-16 19:09:38,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 1579. [2020-01-16 19:09:38,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 19:09:38,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7077 transitions. [2020-01-16 19:09:38,349 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7077 transitions. Word has length 28 [2020-01-16 19:09:38,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:38,349 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7077 transitions. [2020-01-16 19:09:38,349 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:38,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7077 transitions. [2020-01-16 19:09:38,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:38,352 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:38,352 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:38,352 INFO L426 AbstractCegarLoop]: === Iteration 762 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:38,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:38,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1495918968, now seen corresponding path program 754 times [2020-01-16 19:09:38,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:38,352 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702920249] [2020-01-16 19:09:38,352 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:38,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:38,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:38,883 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702920249] [2020-01-16 19:09:38,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:38,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:38,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943553293] [2020-01-16 19:09:38,883 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:38,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:38,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:38,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:38,884 INFO L87 Difference]: Start difference. First operand 1579 states and 7077 transitions. Second operand 11 states. [2020-01-16 19:09:39,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:39,110 INFO L93 Difference]: Finished difference Result 2959 states and 11732 transitions. [2020-01-16 19:09:39,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:39,110 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:39,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:39,117 INFO L225 Difference]: With dead ends: 2959 [2020-01-16 19:09:39,117 INFO L226 Difference]: Without dead ends: 2937 [2020-01-16 19:09:39,117 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:39,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2020-01-16 19:09:39,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 1574. [2020-01-16 19:09:39,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 19:09:39,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7063 transitions. [2020-01-16 19:09:39,183 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7063 transitions. Word has length 28 [2020-01-16 19:09:39,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:39,183 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7063 transitions. [2020-01-16 19:09:39,184 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:39,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7063 transitions. [2020-01-16 19:09:39,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:39,186 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:39,186 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:39,186 INFO L426 AbstractCegarLoop]: === Iteration 763 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:39,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:39,186 INFO L82 PathProgramCache]: Analyzing trace with hash -802928200, now seen corresponding path program 755 times [2020-01-16 19:09:39,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:39,186 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336872624] [2020-01-16 19:09:39,186 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:39,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:39,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:39,726 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336872624] [2020-01-16 19:09:39,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:39,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:39,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305029114] [2020-01-16 19:09:39,727 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:39,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:39,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:39,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:39,727 INFO L87 Difference]: Start difference. First operand 1574 states and 7063 transitions. Second operand 11 states. [2020-01-16 19:09:39,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:39,899 INFO L93 Difference]: Finished difference Result 2960 states and 11735 transitions. [2020-01-16 19:09:39,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:39,900 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:39,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:39,907 INFO L225 Difference]: With dead ends: 2960 [2020-01-16 19:09:39,907 INFO L226 Difference]: Without dead ends: 2944 [2020-01-16 19:09:39,907 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:39,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2944 states. [2020-01-16 19:09:39,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2944 to 1580. [2020-01-16 19:09:39,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 19:09:39,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7074 transitions. [2020-01-16 19:09:39,975 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7074 transitions. Word has length 28 [2020-01-16 19:09:39,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:39,975 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7074 transitions. [2020-01-16 19:09:39,975 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:39,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7074 transitions. [2020-01-16 19:09:39,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:39,978 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:39,978 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:39,978 INFO L426 AbstractCegarLoop]: === Iteration 764 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:39,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:39,978 INFO L82 PathProgramCache]: Analyzing trace with hash 115021990, now seen corresponding path program 756 times [2020-01-16 19:09:39,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:39,978 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432357745] [2020-01-16 19:09:39,978 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:39,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:40,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:40,521 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432357745] [2020-01-16 19:09:40,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:40,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:40,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031125099] [2020-01-16 19:09:40,522 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:40,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:40,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:40,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:40,522 INFO L87 Difference]: Start difference. First operand 1580 states and 7074 transitions. Second operand 11 states. [2020-01-16 19:09:40,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:40,720 INFO L93 Difference]: Finished difference Result 2961 states and 11731 transitions. [2020-01-16 19:09:40,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:40,720 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:40,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:40,727 INFO L225 Difference]: With dead ends: 2961 [2020-01-16 19:09:40,728 INFO L226 Difference]: Without dead ends: 2933 [2020-01-16 19:09:40,728 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:40,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2933 states. [2020-01-16 19:09:40,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2933 to 1569. [2020-01-16 19:09:40,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 19:09:40,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7049 transitions. [2020-01-16 19:09:40,793 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7049 transitions. Word has length 28 [2020-01-16 19:09:40,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:40,793 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7049 transitions. [2020-01-16 19:09:40,793 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:40,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7049 transitions. [2020-01-16 19:09:40,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:40,795 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:40,796 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:40,796 INFO L426 AbstractCegarLoop]: === Iteration 765 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:40,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:40,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1539753370, now seen corresponding path program 757 times [2020-01-16 19:09:40,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:40,796 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40674713] [2020-01-16 19:09:40,796 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:40,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:41,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:41,315 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40674713] [2020-01-16 19:09:41,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:41,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:41,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875527788] [2020-01-16 19:09:41,315 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:41,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:41,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:41,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:41,316 INFO L87 Difference]: Start difference. First operand 1569 states and 7049 transitions. Second operand 11 states. [2020-01-16 19:09:41,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:41,494 INFO L93 Difference]: Finished difference Result 2969 states and 11757 transitions. [2020-01-16 19:09:41,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:41,494 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:41,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:41,501 INFO L225 Difference]: With dead ends: 2969 [2020-01-16 19:09:41,501 INFO L226 Difference]: Without dead ends: 2954 [2020-01-16 19:09:41,501 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:41,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2020-01-16 19:09:41,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 1581. [2020-01-16 19:09:41,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 19:09:41,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7082 transitions. [2020-01-16 19:09:41,568 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7082 transitions. Word has length 28 [2020-01-16 19:09:41,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:41,568 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7082 transitions. [2020-01-16 19:09:41,568 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:41,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7082 transitions. [2020-01-16 19:09:41,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:41,571 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:41,571 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:41,571 INFO L426 AbstractCegarLoop]: === Iteration 766 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:41,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:41,571 INFO L82 PathProgramCache]: Analyzing trace with hash -50348374, now seen corresponding path program 758 times [2020-01-16 19:09:41,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:41,571 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269379790] [2020-01-16 19:09:41,571 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:41,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:42,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:42,100 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269379790] [2020-01-16 19:09:42,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:42,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:42,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328049612] [2020-01-16 19:09:42,101 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:42,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:42,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:42,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:42,101 INFO L87 Difference]: Start difference. First operand 1581 states and 7082 transitions. Second operand 11 states. [2020-01-16 19:09:42,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:42,238 INFO L93 Difference]: Finished difference Result 2974 states and 11761 transitions. [2020-01-16 19:09:42,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:42,239 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:42,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:42,246 INFO L225 Difference]: With dead ends: 2974 [2020-01-16 19:09:42,246 INFO L226 Difference]: Without dead ends: 2948 [2020-01-16 19:09:42,247 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:42,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2948 states. [2020-01-16 19:09:42,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2948 to 1575. [2020-01-16 19:09:42,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:09:42,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7065 transitions. [2020-01-16 19:09:42,313 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7065 transitions. Word has length 28 [2020-01-16 19:09:42,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:42,313 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7065 transitions. [2020-01-16 19:09:42,313 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:42,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7065 transitions. [2020-01-16 19:09:42,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:42,316 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:42,316 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:42,316 INFO L426 AbstractCegarLoop]: === Iteration 767 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:42,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:42,316 INFO L82 PathProgramCache]: Analyzing trace with hash -464042214, now seen corresponding path program 759 times [2020-01-16 19:09:42,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:42,316 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277199316] [2020-01-16 19:09:42,316 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:42,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:42,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:42,830 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277199316] [2020-01-16 19:09:42,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:42,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:42,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924818286] [2020-01-16 19:09:42,830 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:42,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:42,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:42,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:42,831 INFO L87 Difference]: Start difference. First operand 1575 states and 7065 transitions. Second operand 11 states. [2020-01-16 19:09:43,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:43,001 INFO L93 Difference]: Finished difference Result 2965 states and 11744 transitions. [2020-01-16 19:09:43,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:43,002 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:43,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:43,009 INFO L225 Difference]: With dead ends: 2965 [2020-01-16 19:09:43,009 INFO L226 Difference]: Without dead ends: 2950 [2020-01-16 19:09:43,009 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:43,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2020-01-16 19:09:43,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 1580. [2020-01-16 19:09:43,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 19:09:43,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7074 transitions. [2020-01-16 19:09:43,076 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7074 transitions. Word has length 28 [2020-01-16 19:09:43,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:43,076 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7074 transitions. [2020-01-16 19:09:43,076 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:43,076 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7074 transitions. [2020-01-16 19:09:43,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:43,078 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:43,079 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:43,079 INFO L426 AbstractCegarLoop]: === Iteration 768 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:43,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:43,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1198610474, now seen corresponding path program 760 times [2020-01-16 19:09:43,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:43,079 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720708455] [2020-01-16 19:09:43,079 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:43,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:43,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:43,603 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720708455] [2020-01-16 19:09:43,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:43,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:43,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942442043] [2020-01-16 19:09:43,603 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:43,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:43,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:43,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:43,604 INFO L87 Difference]: Start difference. First operand 1580 states and 7074 transitions. Second operand 11 states. [2020-01-16 19:09:43,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:43,827 INFO L93 Difference]: Finished difference Result 2967 states and 11743 transitions. [2020-01-16 19:09:43,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:43,828 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:43,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:43,835 INFO L225 Difference]: With dead ends: 2967 [2020-01-16 19:09:43,835 INFO L226 Difference]: Without dead ends: 2945 [2020-01-16 19:09:43,835 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:43,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2945 states. [2020-01-16 19:09:43,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2945 to 1575. [2020-01-16 19:09:43,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:09:43,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7060 transitions. [2020-01-16 19:09:43,901 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7060 transitions. Word has length 28 [2020-01-16 19:09:43,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:43,902 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7060 transitions. [2020-01-16 19:09:43,902 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:43,902 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7060 transitions. [2020-01-16 19:09:43,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:43,904 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:43,904 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:43,904 INFO L426 AbstractCegarLoop]: === Iteration 769 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:43,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:43,904 INFO L82 PathProgramCache]: Analyzing trace with hash -47722598, now seen corresponding path program 761 times [2020-01-16 19:09:43,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:43,904 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297688637] [2020-01-16 19:09:43,905 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:43,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:44,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:44,444 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297688637] [2020-01-16 19:09:44,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:44,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:44,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336617418] [2020-01-16 19:09:44,444 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:44,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:44,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:44,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:44,445 INFO L87 Difference]: Start difference. First operand 1575 states and 7060 transitions. Second operand 11 states. [2020-01-16 19:09:44,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:44,604 INFO L93 Difference]: Finished difference Result 2978 states and 11765 transitions. [2020-01-16 19:09:44,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:44,604 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:44,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:44,611 INFO L225 Difference]: With dead ends: 2978 [2020-01-16 19:09:44,611 INFO L226 Difference]: Without dead ends: 2958 [2020-01-16 19:09:44,611 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:44,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2958 states. [2020-01-16 19:09:44,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2958 to 1583. [2020-01-16 19:09:44,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 19:09:44,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7074 transitions. [2020-01-16 19:09:44,682 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7074 transitions. Word has length 28 [2020-01-16 19:09:44,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:44,682 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7074 transitions. [2020-01-16 19:09:44,682 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:44,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7074 transitions. [2020-01-16 19:09:44,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:44,685 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:44,685 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:44,685 INFO L426 AbstractCegarLoop]: === Iteration 770 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:44,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:44,685 INFO L82 PathProgramCache]: Analyzing trace with hash 125525094, now seen corresponding path program 762 times [2020-01-16 19:09:44,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:44,685 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358358242] [2020-01-16 19:09:44,685 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:44,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:45,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:45,212 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358358242] [2020-01-16 19:09:45,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:45,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:45,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561433605] [2020-01-16 19:09:45,212 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:45,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:45,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:45,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:45,213 INFO L87 Difference]: Start difference. First operand 1583 states and 7074 transitions. Second operand 11 states. [2020-01-16 19:09:45,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:45,415 INFO L93 Difference]: Finished difference Result 2975 states and 11752 transitions. [2020-01-16 19:09:45,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:45,416 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:45,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:45,422 INFO L225 Difference]: With dead ends: 2975 [2020-01-16 19:09:45,423 INFO L226 Difference]: Without dead ends: 2944 [2020-01-16 19:09:45,423 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:45,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2944 states. [2020-01-16 19:09:45,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2944 to 1569. [2020-01-16 19:09:45,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 19:09:45,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7043 transitions. [2020-01-16 19:09:45,489 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7043 transitions. Word has length 28 [2020-01-16 19:09:45,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:45,490 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7043 transitions. [2020-01-16 19:09:45,490 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:45,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7043 transitions. [2020-01-16 19:09:45,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:45,492 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:45,492 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:45,492 INFO L426 AbstractCegarLoop]: === Iteration 771 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:45,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:45,492 INFO L82 PathProgramCache]: Analyzing trace with hash -784547768, now seen corresponding path program 763 times [2020-01-16 19:09:45,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:45,492 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94506452] [2020-01-16 19:09:45,493 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:45,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:46,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:46,020 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94506452] [2020-01-16 19:09:46,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:46,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:46,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551774283] [2020-01-16 19:09:46,020 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:46,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:46,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:46,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:46,021 INFO L87 Difference]: Start difference. First operand 1569 states and 7043 transitions. Second operand 11 states. [2020-01-16 19:09:46,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:46,199 INFO L93 Difference]: Finished difference Result 2976 states and 11770 transitions. [2020-01-16 19:09:46,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:46,200 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:46,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:46,207 INFO L225 Difference]: With dead ends: 2976 [2020-01-16 19:09:46,207 INFO L226 Difference]: Without dead ends: 2960 [2020-01-16 19:09:46,208 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:46,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2960 states. [2020-01-16 19:09:46,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2960 to 1583. [2020-01-16 19:09:46,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 19:09:46,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7082 transitions. [2020-01-16 19:09:46,273 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7082 transitions. Word has length 28 [2020-01-16 19:09:46,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:46,273 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7082 transitions. [2020-01-16 19:09:46,273 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:46,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7082 transitions. [2020-01-16 19:09:46,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:46,276 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:46,276 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:46,276 INFO L426 AbstractCegarLoop]: === Iteration 772 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:46,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:46,276 INFO L82 PathProgramCache]: Analyzing trace with hash -39845270, now seen corresponding path program 764 times [2020-01-16 19:09:46,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:46,276 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409770980] [2020-01-16 19:09:46,276 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:46,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:46,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:46,819 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409770980] [2020-01-16 19:09:46,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:46,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:46,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576826595] [2020-01-16 19:09:46,819 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:46,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:46,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:46,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:46,820 INFO L87 Difference]: Start difference. First operand 1583 states and 7082 transitions. Second operand 11 states. [2020-01-16 19:09:46,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:46,977 INFO L93 Difference]: Finished difference Result 2980 states and 11771 transitions. [2020-01-16 19:09:46,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:46,977 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:46,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:46,984 INFO L225 Difference]: With dead ends: 2980 [2020-01-16 19:09:46,984 INFO L226 Difference]: Without dead ends: 2953 [2020-01-16 19:09:46,984 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:47,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2953 states. [2020-01-16 19:09:47,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2953 to 1576. [2020-01-16 19:09:47,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 19:09:47,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7062 transitions. [2020-01-16 19:09:47,051 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7062 transitions. Word has length 28 [2020-01-16 19:09:47,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:47,051 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7062 transitions. [2020-01-16 19:09:47,051 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:47,051 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7062 transitions. [2020-01-16 19:09:47,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:47,054 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:47,054 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:47,054 INFO L426 AbstractCegarLoop]: === Iteration 773 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:47,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:47,054 INFO L82 PathProgramCache]: Analyzing trace with hash 291163388, now seen corresponding path program 765 times [2020-01-16 19:09:47,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:47,054 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784788164] [2020-01-16 19:09:47,054 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:47,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:47,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:47,575 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784788164] [2020-01-16 19:09:47,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:47,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:47,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973027631] [2020-01-16 19:09:47,575 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:47,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:47,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:47,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:47,576 INFO L87 Difference]: Start difference. First operand 1576 states and 7062 transitions. Second operand 11 states. [2020-01-16 19:09:47,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:47,768 INFO L93 Difference]: Finished difference Result 2972 states and 11756 transitions. [2020-01-16 19:09:47,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:47,768 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:47,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:47,775 INFO L225 Difference]: With dead ends: 2972 [2020-01-16 19:09:47,776 INFO L226 Difference]: Without dead ends: 2956 [2020-01-16 19:09:47,776 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:47,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2020-01-16 19:09:47,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 1582. [2020-01-16 19:09:47,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 19:09:47,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7073 transitions. [2020-01-16 19:09:47,842 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7073 transitions. Word has length 28 [2020-01-16 19:09:47,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:47,842 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7073 transitions. [2020-01-16 19:09:47,842 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:47,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7073 transitions. [2020-01-16 19:09:47,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:47,845 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:47,845 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:47,845 INFO L426 AbstractCegarLoop]: === Iteration 774 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:47,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:47,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1209113578, now seen corresponding path program 766 times [2020-01-16 19:09:47,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:47,845 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412589512] [2020-01-16 19:09:47,845 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:47,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:48,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:48,376 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412589512] [2020-01-16 19:09:48,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:48,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:48,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575983703] [2020-01-16 19:09:48,377 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:48,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:48,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:48,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:48,377 INFO L87 Difference]: Start difference. First operand 1582 states and 7073 transitions. Second operand 11 states. [2020-01-16 19:09:48,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:48,590 INFO L93 Difference]: Finished difference Result 2973 states and 11752 transitions. [2020-01-16 19:09:48,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:48,590 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:48,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:48,598 INFO L225 Difference]: With dead ends: 2973 [2020-01-16 19:09:48,598 INFO L226 Difference]: Without dead ends: 2950 [2020-01-16 19:09:48,598 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:48,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2020-01-16 19:09:48,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 1576. [2020-01-16 19:09:48,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 19:09:48,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7056 transitions. [2020-01-16 19:09:48,665 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7056 transitions. Word has length 28 [2020-01-16 19:09:48,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:48,665 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7056 transitions. [2020-01-16 19:09:48,665 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:48,665 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7056 transitions. [2020-01-16 19:09:48,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:48,667 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:48,667 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:48,667 INFO L426 AbstractCegarLoop]: === Iteration 775 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:48,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:48,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1648160452, now seen corresponding path program 767 times [2020-01-16 19:09:48,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:48,668 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083459932] [2020-01-16 19:09:48,668 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:48,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:49,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:49,206 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083459932] [2020-01-16 19:09:49,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:49,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:49,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795351570] [2020-01-16 19:09:49,207 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:49,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:49,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:49,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:49,207 INFO L87 Difference]: Start difference. First operand 1576 states and 7056 transitions. Second operand 11 states. [2020-01-16 19:09:49,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:49,360 INFO L93 Difference]: Finished difference Result 2982 states and 11769 transitions. [2020-01-16 19:09:49,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:49,360 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:49,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:49,367 INFO L225 Difference]: With dead ends: 2982 [2020-01-16 19:09:49,368 INFO L226 Difference]: Without dead ends: 2962 [2020-01-16 19:09:49,368 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:49,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2962 states. [2020-01-16 19:09:49,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2962 to 1584. [2020-01-16 19:09:49,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1584 states. [2020-01-16 19:09:49,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 7070 transitions. [2020-01-16 19:09:49,433 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 7070 transitions. Word has length 28 [2020-01-16 19:09:49,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:49,434 INFO L478 AbstractCegarLoop]: Abstraction has 1584 states and 7070 transitions. [2020-01-16 19:09:49,434 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:49,434 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 7070 transitions. [2020-01-16 19:09:49,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:49,436 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:49,436 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:49,436 INFO L426 AbstractCegarLoop]: === Iteration 776 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:49,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:49,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1474912760, now seen corresponding path program 768 times [2020-01-16 19:09:49,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:49,436 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550832677] [2020-01-16 19:09:49,437 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:49,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:49,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:49,963 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550832677] [2020-01-16 19:09:49,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:49,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:49,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139708486] [2020-01-16 19:09:49,963 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:49,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:49,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:49,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:49,964 INFO L87 Difference]: Start difference. First operand 1584 states and 7070 transitions. Second operand 11 states. [2020-01-16 19:09:50,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:50,149 INFO L93 Difference]: Finished difference Result 2979 states and 11756 transitions. [2020-01-16 19:09:50,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:50,150 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:50,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:50,157 INFO L225 Difference]: With dead ends: 2979 [2020-01-16 19:09:50,157 INFO L226 Difference]: Without dead ends: 2941 [2020-01-16 19:09:50,157 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:50,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2941 states. [2020-01-16 19:09:50,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2941 to 1563. [2020-01-16 19:09:50,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 19:09:50,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7026 transitions. [2020-01-16 19:09:50,223 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7026 transitions. Word has length 28 [2020-01-16 19:09:50,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:50,223 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7026 transitions. [2020-01-16 19:09:50,224 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:50,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7026 transitions. [2020-01-16 19:09:50,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:50,226 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:50,226 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:50,226 INFO L426 AbstractCegarLoop]: === Iteration 777 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:50,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:50,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1292451582, now seen corresponding path program 769 times [2020-01-16 19:09:50,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:50,226 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231882022] [2020-01-16 19:09:50,226 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:50,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:50,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:50,764 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231882022] [2020-01-16 19:09:50,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:50,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:50,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235294136] [2020-01-16 19:09:50,764 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:50,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:50,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:50,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:50,765 INFO L87 Difference]: Start difference. First operand 1563 states and 7026 transitions. Second operand 11 states. [2020-01-16 19:09:51,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:51,033 INFO L93 Difference]: Finished difference Result 2948 states and 11716 transitions. [2020-01-16 19:09:51,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:51,034 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:51,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:51,041 INFO L225 Difference]: With dead ends: 2948 [2020-01-16 19:09:51,041 INFO L226 Difference]: Without dead ends: 2933 [2020-01-16 19:09:51,041 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:51,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2933 states. [2020-01-16 19:09:51,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2933 to 1578. [2020-01-16 19:09:51,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 19:09:51,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7078 transitions. [2020-01-16 19:09:51,107 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7078 transitions. Word has length 28 [2020-01-16 19:09:51,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:51,107 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7078 transitions. [2020-01-16 19:09:51,107 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:51,107 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7078 transitions. [2020-01-16 19:09:51,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:51,109 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:51,109 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:51,109 INFO L426 AbstractCegarLoop]: === Iteration 778 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:51,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:51,109 INFO L82 PathProgramCache]: Analyzing trace with hash -547749084, now seen corresponding path program 770 times [2020-01-16 19:09:51,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:51,110 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380038523] [2020-01-16 19:09:51,110 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:51,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:51,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:51,651 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380038523] [2020-01-16 19:09:51,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:51,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:51,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926286633] [2020-01-16 19:09:51,652 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:51,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:51,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:51,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:51,652 INFO L87 Difference]: Start difference. First operand 1578 states and 7078 transitions. Second operand 11 states. [2020-01-16 19:09:51,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:51,845 INFO L93 Difference]: Finished difference Result 2949 states and 11713 transitions. [2020-01-16 19:09:51,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:51,845 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:51,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:51,852 INFO L225 Difference]: With dead ends: 2949 [2020-01-16 19:09:51,852 INFO L226 Difference]: Without dead ends: 2928 [2020-01-16 19:09:51,852 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:51,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2020-01-16 19:09:51,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 1573. [2020-01-16 19:09:51,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:09:51,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7064 transitions. [2020-01-16 19:09:51,919 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7064 transitions. Word has length 28 [2020-01-16 19:09:51,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:51,919 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7064 transitions. [2020-01-16 19:09:51,919 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:51,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7064 transitions. [2020-01-16 19:09:51,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:51,922 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:51,922 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:51,922 INFO L426 AbstractCegarLoop]: === Iteration 779 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:51,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:51,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1929430334, now seen corresponding path program 771 times [2020-01-16 19:09:51,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:51,922 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912094811] [2020-01-16 19:09:51,922 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:51,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:52,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:52,449 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912094811] [2020-01-16 19:09:52,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:52,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:52,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873402401] [2020-01-16 19:09:52,449 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:52,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:52,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:52,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:52,449 INFO L87 Difference]: Start difference. First operand 1573 states and 7064 transitions. Second operand 11 states. [2020-01-16 19:09:52,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:52,677 INFO L93 Difference]: Finished difference Result 2950 states and 11715 transitions. [2020-01-16 19:09:52,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:52,677 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:52,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:52,685 INFO L225 Difference]: With dead ends: 2950 [2020-01-16 19:09:52,685 INFO L226 Difference]: Without dead ends: 2935 [2020-01-16 19:09:52,685 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:52,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2935 states. [2020-01-16 19:09:52,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2935 to 1578. [2020-01-16 19:09:52,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 19:09:52,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7073 transitions. [2020-01-16 19:09:52,754 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7073 transitions. Word has length 28 [2020-01-16 19:09:52,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:52,754 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7073 transitions. [2020-01-16 19:09:52,754 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:52,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7073 transitions. [2020-01-16 19:09:52,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:52,756 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:52,756 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:52,756 INFO L426 AbstractCegarLoop]: === Iteration 780 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:52,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:52,757 INFO L82 PathProgramCache]: Analyzing trace with hash -131429468, now seen corresponding path program 772 times [2020-01-16 19:09:52,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:52,757 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428403847] [2020-01-16 19:09:52,757 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:52,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:53,181 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 29 [2020-01-16 19:09:53,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:53,291 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428403847] [2020-01-16 19:09:53,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:53,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:53,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009538766] [2020-01-16 19:09:53,292 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:53,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:53,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:53,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:53,292 INFO L87 Difference]: Start difference. First operand 1578 states and 7073 transitions. Second operand 11 states. [2020-01-16 19:09:53,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:53,488 INFO L93 Difference]: Finished difference Result 2953 states and 11716 transitions. [2020-01-16 19:09:53,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:53,489 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:53,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:53,496 INFO L225 Difference]: With dead ends: 2953 [2020-01-16 19:09:53,496 INFO L226 Difference]: Without dead ends: 2930 [2020-01-16 19:09:53,497 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:53,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2020-01-16 19:09:53,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1573. [2020-01-16 19:09:53,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:09:53,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7059 transitions. [2020-01-16 19:09:53,565 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7059 transitions. Word has length 28 [2020-01-16 19:09:53,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:53,565 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7059 transitions. [2020-01-16 19:09:53,565 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:53,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7059 transitions. [2020-01-16 19:09:53,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:53,567 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:53,568 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:53,568 INFO L426 AbstractCegarLoop]: === Iteration 781 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:53,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:53,568 INFO L82 PathProgramCache]: Analyzing trace with hash -9893506, now seen corresponding path program 773 times [2020-01-16 19:09:53,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:53,568 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115760681] [2020-01-16 19:09:53,568 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:53,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:54,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:54,087 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115760681] [2020-01-16 19:09:54,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:54,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:54,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387092896] [2020-01-16 19:09:54,087 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:54,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:54,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:54,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:54,088 INFO L87 Difference]: Start difference. First operand 1573 states and 7059 transitions. Second operand 11 states. [2020-01-16 19:09:54,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:54,281 INFO L93 Difference]: Finished difference Result 2953 states and 11717 transitions. [2020-01-16 19:09:54,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:54,282 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:54,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:54,289 INFO L225 Difference]: With dead ends: 2953 [2020-01-16 19:09:54,290 INFO L226 Difference]: Without dead ends: 2937 [2020-01-16 19:09:54,290 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:54,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2020-01-16 19:09:54,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 1579. [2020-01-16 19:09:54,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 19:09:54,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7070 transitions. [2020-01-16 19:09:54,356 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7070 transitions. Word has length 28 [2020-01-16 19:09:54,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:54,356 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7070 transitions. [2020-01-16 19:09:54,356 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:54,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7070 transitions. [2020-01-16 19:09:54,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:54,358 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:54,358 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:54,358 INFO L426 AbstractCegarLoop]: === Iteration 782 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:54,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:54,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1479511490, now seen corresponding path program 774 times [2020-01-16 19:09:54,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:54,359 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526288419] [2020-01-16 19:09:54,359 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:54,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:54,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:54,874 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526288419] [2020-01-16 19:09:54,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:54,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:54,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808905766] [2020-01-16 19:09:54,874 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:54,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:54,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:54,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:54,875 INFO L87 Difference]: Start difference. First operand 1579 states and 7070 transitions. Second operand 11 states. [2020-01-16 19:09:55,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:55,058 INFO L93 Difference]: Finished difference Result 2955 states and 11715 transitions. [2020-01-16 19:09:55,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:55,059 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:55,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:55,065 INFO L225 Difference]: With dead ends: 2955 [2020-01-16 19:09:55,065 INFO L226 Difference]: Without dead ends: 2926 [2020-01-16 19:09:55,065 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:55,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2020-01-16 19:09:55,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 1568. [2020-01-16 19:09:55,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 19:09:55,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7045 transitions. [2020-01-16 19:09:55,131 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7045 transitions. Word has length 28 [2020-01-16 19:09:55,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:55,131 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7045 transitions. [2020-01-16 19:09:55,131 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:55,131 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7045 transitions. [2020-01-16 19:09:55,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:55,133 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:55,133 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:55,133 INFO L426 AbstractCegarLoop]: === Iteration 783 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:55,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:55,134 INFO L82 PathProgramCache]: Analyzing trace with hash -704706260, now seen corresponding path program 775 times [2020-01-16 19:09:55,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:55,134 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399260359] [2020-01-16 19:09:55,134 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:55,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:55,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:55,662 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399260359] [2020-01-16 19:09:55,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:55,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:55,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476654728] [2020-01-16 19:09:55,662 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:55,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:55,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:55,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:55,663 INFO L87 Difference]: Start difference. First operand 1568 states and 7045 transitions. Second operand 11 states. [2020-01-16 19:09:55,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:55,843 INFO L93 Difference]: Finished difference Result 2947 states and 11709 transitions. [2020-01-16 19:09:55,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:55,844 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:55,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:55,852 INFO L225 Difference]: With dead ends: 2947 [2020-01-16 19:09:55,852 INFO L226 Difference]: Without dead ends: 2932 [2020-01-16 19:09:55,852 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:55,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2932 states. [2020-01-16 19:09:55,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2932 to 1578. [2020-01-16 19:09:55,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 19:09:55,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7073 transitions. [2020-01-16 19:09:55,918 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7073 transitions. Word has length 28 [2020-01-16 19:09:55,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:55,918 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7073 transitions. [2020-01-16 19:09:55,918 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:55,918 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7073 transitions. [2020-01-16 19:09:55,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:55,921 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:55,921 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:55,921 INFO L426 AbstractCegarLoop]: === Iteration 784 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:55,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:55,921 INFO L82 PathProgramCache]: Analyzing trace with hash 39996238, now seen corresponding path program 776 times [2020-01-16 19:09:55,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:55,921 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820849523] [2020-01-16 19:09:55,921 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:55,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:56,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:56,452 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820849523] [2020-01-16 19:09:56,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:56,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:56,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470337057] [2020-01-16 19:09:56,452 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:56,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:56,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:56,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:56,453 INFO L87 Difference]: Start difference. First operand 1578 states and 7073 transitions. Second operand 11 states. [2020-01-16 19:09:56,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:56,632 INFO L93 Difference]: Finished difference Result 2948 states and 11706 transitions. [2020-01-16 19:09:56,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:56,633 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:56,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:56,640 INFO L225 Difference]: With dead ends: 2948 [2020-01-16 19:09:56,640 INFO L226 Difference]: Without dead ends: 2927 [2020-01-16 19:09:56,641 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:56,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2927 states. [2020-01-16 19:09:56,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2927 to 1573. [2020-01-16 19:09:56,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:09:56,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7059 transitions. [2020-01-16 19:09:56,709 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7059 transitions. Word has length 28 [2020-01-16 19:09:56,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:56,709 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7059 transitions. [2020-01-16 19:09:56,709 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:56,709 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7059 transitions. [2020-01-16 19:09:56,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:56,712 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:56,712 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:56,712 INFO L426 AbstractCegarLoop]: === Iteration 785 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:56,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:56,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1981945854, now seen corresponding path program 777 times [2020-01-16 19:09:56,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:56,712 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578820051] [2020-01-16 19:09:56,712 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:56,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:57,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:57,246 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578820051] [2020-01-16 19:09:57,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:57,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:57,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931642486] [2020-01-16 19:09:57,247 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:57,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:57,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:57,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:57,247 INFO L87 Difference]: Start difference. First operand 1573 states and 7059 transitions. Second operand 11 states. [2020-01-16 19:09:57,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:57,434 INFO L93 Difference]: Finished difference Result 2948 states and 11706 transitions. [2020-01-16 19:09:57,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:57,434 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:57,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:57,441 INFO L225 Difference]: With dead ends: 2948 [2020-01-16 19:09:57,441 INFO L226 Difference]: Without dead ends: 2933 [2020-01-16 19:09:57,441 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:57,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2933 states. [2020-01-16 19:09:57,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2933 to 1578. [2020-01-16 19:09:57,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 19:09:57,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7068 transitions. [2020-01-16 19:09:57,509 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7068 transitions. Word has length 28 [2020-01-16 19:09:57,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:57,509 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7068 transitions. [2020-01-16 19:09:57,509 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:57,509 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7068 transitions. [2020-01-16 19:09:57,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:57,512 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:57,512 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:57,512 INFO L426 AbstractCegarLoop]: === Iteration 786 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:57,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:57,512 INFO L82 PathProgramCache]: Analyzing trace with hash -650368754, now seen corresponding path program 778 times [2020-01-16 19:09:57,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:57,512 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018946629] [2020-01-16 19:09:57,512 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:57,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:58,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:58,040 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018946629] [2020-01-16 19:09:58,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:58,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:58,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148965182] [2020-01-16 19:09:58,040 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:58,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:58,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:58,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:58,041 INFO L87 Difference]: Start difference. First operand 1578 states and 7068 transitions. Second operand 11 states. [2020-01-16 19:09:58,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:58,224 INFO L93 Difference]: Finished difference Result 2950 states and 11705 transitions. [2020-01-16 19:09:58,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:58,224 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:58,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:58,231 INFO L225 Difference]: With dead ends: 2950 [2020-01-16 19:09:58,231 INFO L226 Difference]: Without dead ends: 2928 [2020-01-16 19:09:58,231 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:58,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2020-01-16 19:09:58,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 1573. [2020-01-16 19:09:58,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:09:58,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7054 transitions. [2020-01-16 19:09:58,298 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7054 transitions. Word has length 28 [2020-01-16 19:09:58,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:58,299 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7054 transitions. [2020-01-16 19:09:58,299 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:58,299 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7054 transitions. [2020-01-16 19:09:58,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:58,301 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:58,301 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:58,301 INFO L426 AbstractCegarLoop]: === Iteration 787 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:58,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:58,301 INFO L82 PathProgramCache]: Analyzing trace with hash 42622014, now seen corresponding path program 779 times [2020-01-16 19:09:58,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:58,302 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64825436] [2020-01-16 19:09:58,302 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:58,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:58,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:58,839 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64825436] [2020-01-16 19:09:58,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:58,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:58,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982840371] [2020-01-16 19:09:58,840 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:58,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:58,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:58,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:58,840 INFO L87 Difference]: Start difference. First operand 1573 states and 7054 transitions. Second operand 11 states. [2020-01-16 19:09:59,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:59,053 INFO L93 Difference]: Finished difference Result 2951 states and 11708 transitions. [2020-01-16 19:09:59,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:59,053 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:59,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:59,060 INFO L225 Difference]: With dead ends: 2951 [2020-01-16 19:09:59,060 INFO L226 Difference]: Without dead ends: 2935 [2020-01-16 19:09:59,060 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:59,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2935 states. [2020-01-16 19:09:59,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2935 to 1579. [2020-01-16 19:09:59,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 19:09:59,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7065 transitions. [2020-01-16 19:09:59,128 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7065 transitions. Word has length 28 [2020-01-16 19:09:59,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:59,128 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7065 transitions. [2020-01-16 19:09:59,128 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:59,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7065 transitions. [2020-01-16 19:09:59,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:59,131 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:59,131 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:59,131 INFO L426 AbstractCegarLoop]: === Iteration 788 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:59,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:59,131 INFO L82 PathProgramCache]: Analyzing trace with hash 960572204, now seen corresponding path program 780 times [2020-01-16 19:09:59,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:59,131 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311906924] [2020-01-16 19:09:59,131 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:59,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:09:59,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:09:59,700 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311906924] [2020-01-16 19:09:59,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:09:59,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:09:59,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106289257] [2020-01-16 19:09:59,700 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:09:59,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:09:59,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:09:59,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:09:59,700 INFO L87 Difference]: Start difference. First operand 1579 states and 7065 transitions. Second operand 11 states. [2020-01-16 19:09:59,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:09:59,871 INFO L93 Difference]: Finished difference Result 2952 states and 11704 transitions. [2020-01-16 19:09:59,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:09:59,871 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:09:59,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:09:59,879 INFO L225 Difference]: With dead ends: 2952 [2020-01-16 19:09:59,879 INFO L226 Difference]: Without dead ends: 2924 [2020-01-16 19:09:59,879 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:09:59,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2924 states. [2020-01-16 19:09:59,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2924 to 1568. [2020-01-16 19:09:59,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 19:09:59,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7040 transitions. [2020-01-16 19:09:59,945 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7040 transitions. Word has length 28 [2020-01-16 19:09:59,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:09:59,946 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7040 transitions. [2020-01-16 19:09:59,946 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:09:59,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7040 transitions. [2020-01-16 19:09:59,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:09:59,948 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:09:59,948 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:09:59,948 INFO L426 AbstractCegarLoop]: === Iteration 789 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:09:59,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:09:59,948 INFO L82 PathProgramCache]: Analyzing trace with hash -683700052, now seen corresponding path program 781 times [2020-01-16 19:09:59,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:09:59,948 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649856722] [2020-01-16 19:09:59,949 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:09:59,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:00,477 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 19:10:00,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:00,484 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649856722] [2020-01-16 19:10:00,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:00,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:00,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394307127] [2020-01-16 19:10:00,485 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:00,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:00,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:00,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:00,485 INFO L87 Difference]: Start difference. First operand 1568 states and 7040 transitions. Second operand 11 states. [2020-01-16 19:10:00,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:00,661 INFO L93 Difference]: Finished difference Result 2952 states and 11715 transitions. [2020-01-16 19:10:00,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:00,661 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:00,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:00,669 INFO L225 Difference]: With dead ends: 2952 [2020-01-16 19:10:00,669 INFO L226 Difference]: Without dead ends: 2937 [2020-01-16 19:10:00,670 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:00,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2020-01-16 19:10:00,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 1578. [2020-01-16 19:10:00,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 19:10:00,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7068 transitions. [2020-01-16 19:10:00,738 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7068 transitions. Word has length 28 [2020-01-16 19:10:00,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:00,738 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7068 transitions. [2020-01-16 19:10:00,738 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:00,738 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7068 transitions. [2020-01-16 19:10:00,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:00,740 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:00,741 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:00,741 INFO L426 AbstractCegarLoop]: === Iteration 790 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:00,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:00,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1550407442, now seen corresponding path program 782 times [2020-01-16 19:10:00,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:00,741 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572491932] [2020-01-16 19:10:00,741 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:00,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:01,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:01,276 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572491932] [2020-01-16 19:10:01,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:01,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:01,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089185355] [2020-01-16 19:10:01,277 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:01,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:01,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:01,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:01,277 INFO L87 Difference]: Start difference. First operand 1578 states and 7068 transitions. Second operand 11 states. [2020-01-16 19:10:01,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:01,454 INFO L93 Difference]: Finished difference Result 2955 states and 11716 transitions. [2020-01-16 19:10:01,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:01,455 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:01,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:01,462 INFO L225 Difference]: With dead ends: 2955 [2020-01-16 19:10:01,463 INFO L226 Difference]: Without dead ends: 2932 [2020-01-16 19:10:01,463 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:01,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2932 states. [2020-01-16 19:10:01,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2932 to 1573. [2020-01-16 19:10:01,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:10:01,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7054 transitions. [2020-01-16 19:10:01,528 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7054 transitions. Word has length 28 [2020-01-16 19:10:01,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:01,529 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7054 transitions. [2020-01-16 19:10:01,529 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:01,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7054 transitions. [2020-01-16 19:10:01,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:01,531 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:01,531 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:01,531 INFO L426 AbstractCegarLoop]: === Iteration 791 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:01,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:01,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1218929854, now seen corresponding path program 783 times [2020-01-16 19:10:01,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:01,532 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692953697] [2020-01-16 19:10:01,532 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:01,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:02,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:02,062 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692953697] [2020-01-16 19:10:02,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:02,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:02,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190482313] [2020-01-16 19:10:02,062 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:02,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:02,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:02,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:02,063 INFO L87 Difference]: Start difference. First operand 1573 states and 7054 transitions. Second operand 11 states. [2020-01-16 19:10:02,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:02,236 INFO L93 Difference]: Finished difference Result 2951 states and 11708 transitions. [2020-01-16 19:10:02,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:02,236 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:02,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:02,244 INFO L225 Difference]: With dead ends: 2951 [2020-01-16 19:10:02,244 INFO L226 Difference]: Without dead ends: 2936 [2020-01-16 19:10:02,244 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:02,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2936 states. [2020-01-16 19:10:02,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2936 to 1578. [2020-01-16 19:10:02,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 19:10:02,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7063 transitions. [2020-01-16 19:10:02,312 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7063 transitions. Word has length 28 [2020-01-16 19:10:02,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:02,313 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7063 transitions. [2020-01-16 19:10:02,313 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:02,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7063 transitions. [2020-01-16 19:10:02,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:02,315 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:02,315 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:02,315 INFO L426 AbstractCegarLoop]: === Iteration 792 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:02,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:02,315 INFO L82 PathProgramCache]: Analyzing trace with hash 443722834, now seen corresponding path program 784 times [2020-01-16 19:10:02,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:02,315 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849882321] [2020-01-16 19:10:02,316 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:02,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:02,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:02,840 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849882321] [2020-01-16 19:10:02,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:02,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:02,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234155065] [2020-01-16 19:10:02,840 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:02,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:02,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:02,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:02,840 INFO L87 Difference]: Start difference. First operand 1578 states and 7063 transitions. Second operand 11 states. [2020-01-16 19:10:03,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:03,028 INFO L93 Difference]: Finished difference Result 2953 states and 11707 transitions. [2020-01-16 19:10:03,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:03,029 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:03,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:03,036 INFO L225 Difference]: With dead ends: 2953 [2020-01-16 19:10:03,036 INFO L226 Difference]: Without dead ends: 2931 [2020-01-16 19:10:03,037 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:03,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2931 states. [2020-01-16 19:10:03,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2931 to 1573. [2020-01-16 19:10:03,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:10:03,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7049 transitions. [2020-01-16 19:10:03,105 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7049 transitions. Word has length 28 [2020-01-16 19:10:03,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:03,105 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7049 transitions. [2020-01-16 19:10:03,105 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:03,105 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7049 transitions. [2020-01-16 19:10:03,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:03,107 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:03,107 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:03,108 INFO L426 AbstractCegarLoop]: === Iteration 793 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:03,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:03,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1553033218, now seen corresponding path program 785 times [2020-01-16 19:10:03,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:03,108 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920162832] [2020-01-16 19:10:03,108 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:03,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:03,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:03,637 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920162832] [2020-01-16 19:10:03,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:03,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:03,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614909804] [2020-01-16 19:10:03,637 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:03,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:03,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:03,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:03,638 INFO L87 Difference]: Start difference. First operand 1573 states and 7049 transitions. Second operand 11 states. [2020-01-16 19:10:03,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:03,843 INFO L93 Difference]: Finished difference Result 2959 states and 11721 transitions. [2020-01-16 19:10:03,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:03,843 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:03,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:03,850 INFO L225 Difference]: With dead ends: 2959 [2020-01-16 19:10:03,850 INFO L226 Difference]: Without dead ends: 2941 [2020-01-16 19:10:03,850 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:03,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2941 states. [2020-01-16 19:10:03,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2941 to 1580. [2020-01-16 19:10:03,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 19:10:03,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7062 transitions. [2020-01-16 19:10:03,918 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7062 transitions. Word has length 28 [2020-01-16 19:10:03,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:03,918 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7062 transitions. [2020-01-16 19:10:03,918 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:03,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7062 transitions. [2020-01-16 19:10:03,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:03,921 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:03,921 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:03,921 INFO L426 AbstractCegarLoop]: === Iteration 794 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:03,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:03,921 INFO L82 PathProgramCache]: Analyzing trace with hash 981578412, now seen corresponding path program 786 times [2020-01-16 19:10:03,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:03,921 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374270735] [2020-01-16 19:10:03,921 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:03,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:04,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:04,441 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374270735] [2020-01-16 19:10:04,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:04,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:04,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595626910] [2020-01-16 19:10:04,441 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:04,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:04,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:04,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:04,442 INFO L87 Difference]: Start difference. First operand 1580 states and 7062 transitions. Second operand 11 states. [2020-01-16 19:10:04,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:04,661 INFO L93 Difference]: Finished difference Result 2958 states and 11712 transitions. [2020-01-16 19:10:04,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:04,661 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:04,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:04,669 INFO L225 Difference]: With dead ends: 2958 [2020-01-16 19:10:04,669 INFO L226 Difference]: Without dead ends: 2929 [2020-01-16 19:10:04,669 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:04,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2929 states. [2020-01-16 19:10:04,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2929 to 1568. [2020-01-16 19:10:04,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 19:10:04,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7035 transitions. [2020-01-16 19:10:04,741 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7035 transitions. Word has length 28 [2020-01-16 19:10:04,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:04,742 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7035 transitions. [2020-01-16 19:10:04,742 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:04,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7035 transitions. [2020-01-16 19:10:04,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:04,744 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:04,744 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:04,744 INFO L426 AbstractCegarLoop]: === Iteration 795 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:04,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:04,744 INFO L82 PathProgramCache]: Analyzing trace with hash 71505550, now seen corresponding path program 787 times [2020-01-16 19:10:04,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:04,745 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379708693] [2020-01-16 19:10:04,745 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:04,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:05,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:05,285 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379708693] [2020-01-16 19:10:05,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:05,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:05,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982176025] [2020-01-16 19:10:05,286 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:05,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:05,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:05,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:05,286 INFO L87 Difference]: Start difference. First operand 1568 states and 7035 transitions. Second operand 11 states. [2020-01-16 19:10:05,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:05,522 INFO L93 Difference]: Finished difference Result 2959 states and 11729 transitions. [2020-01-16 19:10:05,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:05,522 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:05,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:05,530 INFO L225 Difference]: With dead ends: 2959 [2020-01-16 19:10:05,530 INFO L226 Difference]: Without dead ends: 2943 [2020-01-16 19:10:05,530 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:05,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2943 states. [2020-01-16 19:10:05,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2943 to 1580. [2020-01-16 19:10:05,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 19:10:05,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7069 transitions. [2020-01-16 19:10:05,619 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7069 transitions. Word has length 28 [2020-01-16 19:10:05,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:05,619 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7069 transitions. [2020-01-16 19:10:05,619 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:05,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7069 transitions. [2020-01-16 19:10:05,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:05,622 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:05,622 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:05,622 INFO L426 AbstractCegarLoop]: === Iteration 796 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:05,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:05,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1560910546, now seen corresponding path program 788 times [2020-01-16 19:10:05,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:05,623 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978005548] [2020-01-16 19:10:05,623 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:05,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:06,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:06,154 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978005548] [2020-01-16 19:10:06,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:06,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:06,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417348475] [2020-01-16 19:10:06,154 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:06,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:06,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:06,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:06,155 INFO L87 Difference]: Start difference. First operand 1580 states and 7069 transitions. Second operand 11 states. [2020-01-16 19:10:06,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:06,388 INFO L93 Difference]: Finished difference Result 2961 states and 11727 transitions. [2020-01-16 19:10:06,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:06,388 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:06,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:06,395 INFO L225 Difference]: With dead ends: 2961 [2020-01-16 19:10:06,396 INFO L226 Difference]: Without dead ends: 2937 [2020-01-16 19:10:06,396 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:06,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2020-01-16 19:10:06,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 1574. [2020-01-16 19:10:06,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 19:10:06,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7052 transitions. [2020-01-16 19:10:06,464 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7052 transitions. Word has length 28 [2020-01-16 19:10:06,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:06,464 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7052 transitions. [2020-01-16 19:10:06,464 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:06,464 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7052 transitions. [2020-01-16 19:10:06,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:06,466 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:06,466 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:06,466 INFO L426 AbstractCegarLoop]: === Iteration 797 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:06,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:06,466 INFO L82 PathProgramCache]: Analyzing trace with hash -463724252, now seen corresponding path program 789 times [2020-01-16 19:10:06,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:06,467 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677953171] [2020-01-16 19:10:06,467 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:06,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:06,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:06,997 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677953171] [2020-01-16 19:10:06,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:06,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:06,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827170054] [2020-01-16 19:10:06,997 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:06,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:06,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:06,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:06,998 INFO L87 Difference]: Start difference. First operand 1574 states and 7052 transitions. Second operand 11 states. [2020-01-16 19:10:07,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:07,196 INFO L93 Difference]: Finished difference Result 2958 states and 11721 transitions. [2020-01-16 19:10:07,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:07,197 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:07,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:07,205 INFO L225 Difference]: With dead ends: 2958 [2020-01-16 19:10:07,205 INFO L226 Difference]: Without dead ends: 2942 [2020-01-16 19:10:07,205 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:07,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2020-01-16 19:10:07,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 1580. [2020-01-16 19:10:07,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 19:10:07,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7063 transitions. [2020-01-16 19:10:07,271 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7063 transitions. Word has length 28 [2020-01-16 19:10:07,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:07,271 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7063 transitions. [2020-01-16 19:10:07,271 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:07,271 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7063 transitions. [2020-01-16 19:10:07,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:07,274 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:07,274 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:07,274 INFO L426 AbstractCegarLoop]: === Iteration 798 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:07,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:07,274 INFO L82 PathProgramCache]: Analyzing trace with hash 454225938, now seen corresponding path program 790 times [2020-01-16 19:10:07,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:07,274 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963801224] [2020-01-16 19:10:07,274 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:07,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:07,819 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 19:10:07,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:07,826 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963801224] [2020-01-16 19:10:07,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:07,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:07,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288649475] [2020-01-16 19:10:07,826 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:07,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:07,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:07,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:07,827 INFO L87 Difference]: Start difference. First operand 1580 states and 7063 transitions. Second operand 11 states. [2020-01-16 19:10:08,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:08,044 INFO L93 Difference]: Finished difference Result 2959 states and 11717 transitions. [2020-01-16 19:10:08,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:08,045 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:08,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:08,052 INFO L225 Difference]: With dead ends: 2959 [2020-01-16 19:10:08,052 INFO L226 Difference]: Without dead ends: 2936 [2020-01-16 19:10:08,053 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:08,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2936 states. [2020-01-16 19:10:08,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2936 to 1574. [2020-01-16 19:10:08,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 19:10:08,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7046 transitions. [2020-01-16 19:10:08,120 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7046 transitions. Word has length 28 [2020-01-16 19:10:08,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:08,120 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7046 transitions. [2020-01-16 19:10:08,120 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:08,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7046 transitions. [2020-01-16 19:10:08,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:08,122 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:08,122 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:08,122 INFO L426 AbstractCegarLoop]: === Iteration 799 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:08,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:08,122 INFO L82 PathProgramCache]: Analyzing trace with hash -47404636, now seen corresponding path program 791 times [2020-01-16 19:10:08,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:08,123 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110413946] [2020-01-16 19:10:08,123 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:08,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:08,666 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 19:10:08,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:08,673 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110413946] [2020-01-16 19:10:08,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:08,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:08,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862733926] [2020-01-16 19:10:08,674 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:08,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:08,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:08,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:08,674 INFO L87 Difference]: Start difference. First operand 1574 states and 7046 transitions. Second operand 11 states. [2020-01-16 19:10:08,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:08,845 INFO L93 Difference]: Finished difference Result 2963 states and 11726 transitions. [2020-01-16 19:10:08,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:08,846 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:08,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:08,853 INFO L225 Difference]: With dead ends: 2963 [2020-01-16 19:10:08,853 INFO L226 Difference]: Without dead ends: 2945 [2020-01-16 19:10:08,854 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:08,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2945 states. [2020-01-16 19:10:08,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2945 to 1581. [2020-01-16 19:10:08,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 19:10:08,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7059 transitions. [2020-01-16 19:10:08,920 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7059 transitions. Word has length 28 [2020-01-16 19:10:08,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:08,920 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7059 transitions. [2020-01-16 19:10:08,920 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:08,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7059 transitions. [2020-01-16 19:10:08,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:08,922 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:08,922 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:08,922 INFO L426 AbstractCegarLoop]: === Iteration 800 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:08,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:08,923 INFO L82 PathProgramCache]: Analyzing trace with hash -618859442, now seen corresponding path program 792 times [2020-01-16 19:10:08,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:08,923 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866686747] [2020-01-16 19:10:08,923 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:08,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:09,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:09,457 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866686747] [2020-01-16 19:10:09,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:09,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:09,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184060532] [2020-01-16 19:10:09,457 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:09,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:09,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:09,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:09,458 INFO L87 Difference]: Start difference. First operand 1581 states and 7059 transitions. Second operand 11 states. [2020-01-16 19:10:09,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:09,683 INFO L93 Difference]: Finished difference Result 2962 states and 11717 transitions. [2020-01-16 19:10:09,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:09,684 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:09,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:09,691 INFO L225 Difference]: With dead ends: 2962 [2020-01-16 19:10:09,691 INFO L226 Difference]: Without dead ends: 2927 [2020-01-16 19:10:09,691 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:09,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2927 states. [2020-01-16 19:10:09,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2927 to 1563. [2020-01-16 19:10:09,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 19:10:09,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7021 transitions. [2020-01-16 19:10:09,758 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7021 transitions. Word has length 28 [2020-01-16 19:10:09,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:09,758 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7021 transitions. [2020-01-16 19:10:09,758 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:09,758 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7021 transitions. [2020-01-16 19:10:09,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:09,760 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:09,760 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:09,760 INFO L426 AbstractCegarLoop]: === Iteration 801 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:09,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:09,760 INFO L82 PathProgramCache]: Analyzing trace with hash 644085600, now seen corresponding path program 793 times [2020-01-16 19:10:09,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:09,761 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819025605] [2020-01-16 19:10:09,761 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:09,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:10,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:10,305 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819025605] [2020-01-16 19:10:10,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:10,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:10,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901910611] [2020-01-16 19:10:10,306 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:10,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:10,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:10,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:10,306 INFO L87 Difference]: Start difference. First operand 1563 states and 7021 transitions. Second operand 11 states. [2020-01-16 19:10:10,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:10,487 INFO L93 Difference]: Finished difference Result 2985 states and 11793 transitions. [2020-01-16 19:10:10,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:10,487 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:10,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:10,495 INFO L225 Difference]: With dead ends: 2985 [2020-01-16 19:10:10,495 INFO L226 Difference]: Without dead ends: 2970 [2020-01-16 19:10:10,495 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:10,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2970 states. [2020-01-16 19:10:10,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2970 to 1584. [2020-01-16 19:10:10,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1584 states. [2020-01-16 19:10:10,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 7089 transitions. [2020-01-16 19:10:10,565 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 7089 transitions. Word has length 28 [2020-01-16 19:10:10,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:10,565 INFO L478 AbstractCegarLoop]: Abstraction has 1584 states and 7089 transitions. [2020-01-16 19:10:10,565 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:10,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 7089 transitions. [2020-01-16 19:10:10,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:10,567 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:10,567 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:10,567 INFO L426 AbstractCegarLoop]: === Iteration 802 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:10,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:10,567 INFO L82 PathProgramCache]: Analyzing trace with hash 2133490596, now seen corresponding path program 794 times [2020-01-16 19:10:10,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:10,568 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70947123] [2020-01-16 19:10:10,568 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:10,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:11,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:11,127 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70947123] [2020-01-16 19:10:11,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:11,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:11,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586699662] [2020-01-16 19:10:11,128 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:11,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:11,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:11,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:11,128 INFO L87 Difference]: Start difference. First operand 1584 states and 7089 transitions. Second operand 11 states. [2020-01-16 19:10:11,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:11,293 INFO L93 Difference]: Finished difference Result 2990 states and 11797 transitions. [2020-01-16 19:10:11,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:11,294 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:11,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:11,301 INFO L225 Difference]: With dead ends: 2990 [2020-01-16 19:10:11,301 INFO L226 Difference]: Without dead ends: 2964 [2020-01-16 19:10:11,301 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:11,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2964 states. [2020-01-16 19:10:11,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2964 to 1578. [2020-01-16 19:10:11,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 19:10:11,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7072 transitions. [2020-01-16 19:10:11,368 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7072 transitions. Word has length 28 [2020-01-16 19:10:11,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:11,368 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7072 transitions. [2020-01-16 19:10:11,368 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:11,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7072 transitions. [2020-01-16 19:10:11,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:11,370 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:11,371 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:11,371 INFO L426 AbstractCegarLoop]: === Iteration 803 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:11,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:11,371 INFO L82 PathProgramCache]: Analyzing trace with hash -2039940738, now seen corresponding path program 795 times [2020-01-16 19:10:11,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:11,371 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066826022] [2020-01-16 19:10:11,371 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:11,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:11,903 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 19:10:11,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:11,910 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066826022] [2020-01-16 19:10:11,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:11,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:11,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999661056] [2020-01-16 19:10:11,910 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:11,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:11,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:11,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:11,911 INFO L87 Difference]: Start difference. First operand 1578 states and 7072 transitions. Second operand 11 states. [2020-01-16 19:10:12,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:12,127 INFO L93 Difference]: Finished difference Result 2982 states and 11782 transitions. [2020-01-16 19:10:12,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:12,128 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:12,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:12,135 INFO L225 Difference]: With dead ends: 2982 [2020-01-16 19:10:12,135 INFO L226 Difference]: Without dead ends: 2967 [2020-01-16 19:10:12,135 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:12,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2967 states. [2020-01-16 19:10:12,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2967 to 1583. [2020-01-16 19:10:12,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 19:10:12,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7081 transitions. [2020-01-16 19:10:12,202 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7081 transitions. Word has length 28 [2020-01-16 19:10:12,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:12,202 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7081 transitions. [2020-01-16 19:10:12,202 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:12,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7081 transitions. [2020-01-16 19:10:12,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:12,204 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:12,205 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:12,205 INFO L426 AbstractCegarLoop]: === Iteration 804 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:12,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:12,205 INFO L82 PathProgramCache]: Analyzing trace with hash 194166756, now seen corresponding path program 796 times [2020-01-16 19:10:12,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:12,205 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495083335] [2020-01-16 19:10:12,205 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:12,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:12,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:12,736 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495083335] [2020-01-16 19:10:12,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:12,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:12,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477889781] [2020-01-16 19:10:12,736 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:12,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:12,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:12,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:12,737 INFO L87 Difference]: Start difference. First operand 1583 states and 7081 transitions. Second operand 11 states. [2020-01-16 19:10:12,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:12,939 INFO L93 Difference]: Finished difference Result 2985 states and 11783 transitions. [2020-01-16 19:10:12,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:12,939 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:12,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:12,946 INFO L225 Difference]: With dead ends: 2985 [2020-01-16 19:10:12,946 INFO L226 Difference]: Without dead ends: 2962 [2020-01-16 19:10:12,946 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:12,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2962 states. [2020-01-16 19:10:13,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2962 to 1578. [2020-01-16 19:10:13,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 19:10:13,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7067 transitions. [2020-01-16 19:10:13,014 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7067 transitions. Word has length 28 [2020-01-16 19:10:13,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:13,014 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7067 transitions. [2020-01-16 19:10:13,014 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:13,014 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7067 transitions. [2020-01-16 19:10:13,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:13,016 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:13,016 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:13,016 INFO L426 AbstractCegarLoop]: === Iteration 805 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:13,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:13,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1623621122, now seen corresponding path program 797 times [2020-01-16 19:10:13,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:13,017 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094333564] [2020-01-16 19:10:13,017 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:13,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:13,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:13,565 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094333564] [2020-01-16 19:10:13,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:13,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:13,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358445587] [2020-01-16 19:10:13,565 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:13,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:13,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:13,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:13,566 INFO L87 Difference]: Start difference. First operand 1578 states and 7067 transitions. Second operand 11 states. [2020-01-16 19:10:13,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:13,706 INFO L93 Difference]: Finished difference Result 2997 states and 11807 transitions. [2020-01-16 19:10:13,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:13,706 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:13,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:13,713 INFO L225 Difference]: With dead ends: 2997 [2020-01-16 19:10:13,713 INFO L226 Difference]: Without dead ends: 2977 [2020-01-16 19:10:13,713 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:13,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2977 states. [2020-01-16 19:10:13,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2977 to 1588. [2020-01-16 19:10:13,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1588 states. [2020-01-16 19:10:13,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 7084 transitions. [2020-01-16 19:10:13,780 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 7084 transitions. Word has length 28 [2020-01-16 19:10:13,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:13,780 INFO L478 AbstractCegarLoop]: Abstraction has 1588 states and 7084 transitions. [2020-01-16 19:10:13,780 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:13,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 7084 transitions. [2020-01-16 19:10:13,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:13,782 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:13,782 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:13,782 INFO L426 AbstractCegarLoop]: === Iteration 806 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:13,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:13,783 INFO L82 PathProgramCache]: Analyzing trace with hash -878918624, now seen corresponding path program 798 times [2020-01-16 19:10:13,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:13,783 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132005595] [2020-01-16 19:10:13,783 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:13,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:14,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:14,321 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132005595] [2020-01-16 19:10:14,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:14,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:14,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089300610] [2020-01-16 19:10:14,322 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:14,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:14,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:14,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:14,322 INFO L87 Difference]: Start difference. First operand 1588 states and 7084 transitions. Second operand 11 states. [2020-01-16 19:10:14,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:14,528 INFO L93 Difference]: Finished difference Result 2995 states and 11795 transitions. [2020-01-16 19:10:14,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:14,528 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:14,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:14,535 INFO L225 Difference]: With dead ends: 2995 [2020-01-16 19:10:14,535 INFO L226 Difference]: Without dead ends: 2960 [2020-01-16 19:10:14,535 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:14,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2960 states. [2020-01-16 19:10:14,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2960 to 1571. [2020-01-16 19:10:14,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:10:14,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7047 transitions. [2020-01-16 19:10:14,601 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7047 transitions. Word has length 28 [2020-01-16 19:10:14,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:14,601 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7047 transitions. [2020-01-16 19:10:14,601 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:14,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7047 transitions. [2020-01-16 19:10:14,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:14,603 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:14,604 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:14,604 INFO L426 AbstractCegarLoop]: === Iteration 807 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:14,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:14,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1231830922, now seen corresponding path program 799 times [2020-01-16 19:10:14,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:14,604 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502580446] [2020-01-16 19:10:14,604 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:14,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:15,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:15,129 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502580446] [2020-01-16 19:10:15,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:15,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:15,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192120719] [2020-01-16 19:10:15,130 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:15,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:15,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:15,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:15,130 INFO L87 Difference]: Start difference. First operand 1571 states and 7047 transitions. Second operand 11 states. [2020-01-16 19:10:15,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:15,311 INFO L93 Difference]: Finished difference Result 2981 states and 11778 transitions. [2020-01-16 19:10:15,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:15,311 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:15,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:15,319 INFO L225 Difference]: With dead ends: 2981 [2020-01-16 19:10:15,319 INFO L226 Difference]: Without dead ends: 2966 [2020-01-16 19:10:15,319 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:15,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2966 states. [2020-01-16 19:10:15,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2966 to 1583. [2020-01-16 19:10:15,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 19:10:15,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7080 transitions. [2020-01-16 19:10:15,390 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7080 transitions. Word has length 28 [2020-01-16 19:10:15,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:15,390 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7080 transitions. [2020-01-16 19:10:15,391 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:15,391 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7080 transitions. [2020-01-16 19:10:15,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:15,393 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:15,393 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:15,393 INFO L426 AbstractCegarLoop]: === Iteration 808 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:15,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:15,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1573731378, now seen corresponding path program 800 times [2020-01-16 19:10:15,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:15,393 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654301362] [2020-01-16 19:10:15,394 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:15,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:15,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:15,919 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654301362] [2020-01-16 19:10:15,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:15,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:15,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136807892] [2020-01-16 19:10:15,919 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:15,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:15,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:15,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:15,920 INFO L87 Difference]: Start difference. First operand 1583 states and 7080 transitions. Second operand 11 states. [2020-01-16 19:10:16,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:16,067 INFO L93 Difference]: Finished difference Result 2986 states and 11782 transitions. [2020-01-16 19:10:16,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:16,068 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:16,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:16,075 INFO L225 Difference]: With dead ends: 2986 [2020-01-16 19:10:16,075 INFO L226 Difference]: Without dead ends: 2960 [2020-01-16 19:10:16,076 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:16,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2960 states. [2020-01-16 19:10:16,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2960 to 1577. [2020-01-16 19:10:16,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 19:10:16,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7063 transitions. [2020-01-16 19:10:16,142 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7063 transitions. Word has length 28 [2020-01-16 19:10:16,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:16,142 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7063 transitions. [2020-01-16 19:10:16,142 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:16,142 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7063 transitions. [2020-01-16 19:10:16,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:16,144 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:16,144 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:16,144 INFO L426 AbstractCegarLoop]: === Iteration 809 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:16,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:16,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1987425218, now seen corresponding path program 801 times [2020-01-16 19:10:16,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:16,145 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907277453] [2020-01-16 19:10:16,145 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:16,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:16,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:16,670 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907277453] [2020-01-16 19:10:16,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:16,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:16,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725791670] [2020-01-16 19:10:16,671 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:16,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:16,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:16,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:16,671 INFO L87 Difference]: Start difference. First operand 1577 states and 7063 transitions. Second operand 11 states. [2020-01-16 19:10:16,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:16,892 INFO L93 Difference]: Finished difference Result 2977 states and 11765 transitions. [2020-01-16 19:10:16,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:16,892 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:16,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:16,899 INFO L225 Difference]: With dead ends: 2977 [2020-01-16 19:10:16,899 INFO L226 Difference]: Without dead ends: 2962 [2020-01-16 19:10:16,900 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:16,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2962 states. [2020-01-16 19:10:16,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2962 to 1582. [2020-01-16 19:10:16,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 19:10:16,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7072 transitions. [2020-01-16 19:10:16,966 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7072 transitions. Word has length 28 [2020-01-16 19:10:16,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:16,966 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7072 transitions. [2020-01-16 19:10:16,966 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:16,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7072 transitions. [2020-01-16 19:10:16,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:16,969 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:16,969 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:16,969 INFO L426 AbstractCegarLoop]: === Iteration 810 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:16,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:16,969 INFO L82 PathProgramCache]: Analyzing trace with hash -324772530, now seen corresponding path program 802 times [2020-01-16 19:10:16,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:16,969 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638782304] [2020-01-16 19:10:16,969 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:16,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:17,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:17,483 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638782304] [2020-01-16 19:10:17,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:17,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:17,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633934076] [2020-01-16 19:10:17,483 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:17,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:17,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:17,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:17,484 INFO L87 Difference]: Start difference. First operand 1582 states and 7072 transitions. Second operand 11 states. [2020-01-16 19:10:17,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:17,662 INFO L93 Difference]: Finished difference Result 2979 states and 11764 transitions. [2020-01-16 19:10:17,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:17,662 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:17,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:17,669 INFO L225 Difference]: With dead ends: 2979 [2020-01-16 19:10:17,670 INFO L226 Difference]: Without dead ends: 2957 [2020-01-16 19:10:17,670 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:17,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2957 states. [2020-01-16 19:10:17,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2957 to 1577. [2020-01-16 19:10:17,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 19:10:17,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7058 transitions. [2020-01-16 19:10:17,736 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7058 transitions. Word has length 28 [2020-01-16 19:10:17,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:17,736 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7058 transitions. [2020-01-16 19:10:17,736 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:17,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7058 transitions. [2020-01-16 19:10:17,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:17,739 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:17,739 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:17,739 INFO L426 AbstractCegarLoop]: === Iteration 811 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:17,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:17,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1571105602, now seen corresponding path program 803 times [2020-01-16 19:10:17,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:17,739 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624563601] [2020-01-16 19:10:17,739 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:17,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:18,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:18,277 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624563601] [2020-01-16 19:10:18,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:18,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:18,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116309399] [2020-01-16 19:10:18,277 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:18,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:18,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:18,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:18,278 INFO L87 Difference]: Start difference. First operand 1577 states and 7058 transitions. Second operand 11 states. [2020-01-16 19:10:18,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:18,465 INFO L93 Difference]: Finished difference Result 2990 states and 11786 transitions. [2020-01-16 19:10:18,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:18,465 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:18,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:18,472 INFO L225 Difference]: With dead ends: 2990 [2020-01-16 19:10:18,472 INFO L226 Difference]: Without dead ends: 2970 [2020-01-16 19:10:18,472 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:18,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2970 states. [2020-01-16 19:10:18,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2970 to 1585. [2020-01-16 19:10:18,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 19:10:18,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7072 transitions. [2020-01-16 19:10:18,539 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7072 transitions. Word has length 28 [2020-01-16 19:10:18,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:18,539 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7072 transitions. [2020-01-16 19:10:18,539 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:18,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7072 transitions. [2020-01-16 19:10:18,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:18,541 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:18,541 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:18,541 INFO L426 AbstractCegarLoop]: === Iteration 812 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:18,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:18,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1397857910, now seen corresponding path program 804 times [2020-01-16 19:10:18,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:18,542 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572869915] [2020-01-16 19:10:18,542 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:18,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:19,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:19,067 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572869915] [2020-01-16 19:10:19,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:19,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:19,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241049212] [2020-01-16 19:10:19,067 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:19,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:19,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:19,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:19,068 INFO L87 Difference]: Start difference. First operand 1585 states and 7072 transitions. Second operand 11 states. [2020-01-16 19:10:19,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:19,239 INFO L93 Difference]: Finished difference Result 2987 states and 11773 transitions. [2020-01-16 19:10:19,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:19,239 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:19,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:19,246 INFO L225 Difference]: With dead ends: 2987 [2020-01-16 19:10:19,246 INFO L226 Difference]: Without dead ends: 2956 [2020-01-16 19:10:19,247 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:19,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2020-01-16 19:10:19,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 1571. [2020-01-16 19:10:19,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:10:19,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7041 transitions. [2020-01-16 19:10:19,313 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7041 transitions. Word has length 28 [2020-01-16 19:10:19,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:19,313 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7041 transitions. [2020-01-16 19:10:19,313 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:19,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7041 transitions. [2020-01-16 19:10:19,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:19,315 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:19,315 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:19,315 INFO L426 AbstractCegarLoop]: === Iteration 813 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:19,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:19,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1242334026, now seen corresponding path program 805 times [2020-01-16 19:10:19,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:19,316 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433537763] [2020-01-16 19:10:19,316 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:19,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:19,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:19,850 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433537763] [2020-01-16 19:10:19,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:19,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:19,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049391563] [2020-01-16 19:10:19,851 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:19,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:19,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:19,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:19,851 INFO L87 Difference]: Start difference. First operand 1571 states and 7041 transitions. Second operand 11 states. [2020-01-16 19:10:20,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:20,039 INFO L93 Difference]: Finished difference Result 2973 states and 11757 transitions. [2020-01-16 19:10:20,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:20,040 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:20,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:20,047 INFO L225 Difference]: With dead ends: 2973 [2020-01-16 19:10:20,048 INFO L226 Difference]: Without dead ends: 2958 [2020-01-16 19:10:20,048 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:20,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2958 states. [2020-01-16 19:10:20,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2958 to 1581. [2020-01-16 19:10:20,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 19:10:20,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7069 transitions. [2020-01-16 19:10:20,114 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7069 transitions. Word has length 28 [2020-01-16 19:10:20,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:20,114 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7069 transitions. [2020-01-16 19:10:20,114 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:20,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7069 transitions. [2020-01-16 19:10:20,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:20,117 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:20,117 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:20,117 INFO L426 AbstractCegarLoop]: === Iteration 814 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:20,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:20,117 INFO L82 PathProgramCache]: Analyzing trace with hash -818525776, now seen corresponding path program 806 times [2020-01-16 19:10:20,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:20,117 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704913960] [2020-01-16 19:10:20,117 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:20,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:20,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:20,650 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704913960] [2020-01-16 19:10:20,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:20,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:20,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96312729] [2020-01-16 19:10:20,650 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:20,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:20,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:20,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:20,651 INFO L87 Difference]: Start difference. First operand 1581 states and 7069 transitions. Second operand 11 states. [2020-01-16 19:10:20,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:20,859 INFO L93 Difference]: Finished difference Result 2976 states and 11758 transitions. [2020-01-16 19:10:20,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:20,859 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:20,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:20,866 INFO L225 Difference]: With dead ends: 2976 [2020-01-16 19:10:20,866 INFO L226 Difference]: Without dead ends: 2953 [2020-01-16 19:10:20,866 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:20,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2953 states. [2020-01-16 19:10:20,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2953 to 1576. [2020-01-16 19:10:20,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 19:10:20,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7055 transitions. [2020-01-16 19:10:20,933 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7055 transitions. Word has length 28 [2020-01-16 19:10:20,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:20,933 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7055 transitions. [2020-01-16 19:10:20,933 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:20,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7055 transitions. [2020-01-16 19:10:20,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:20,936 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:20,936 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:20,936 INFO L426 AbstractCegarLoop]: === Iteration 815 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:20,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:20,936 INFO L82 PathProgramCache]: Analyzing trace with hash 707104224, now seen corresponding path program 807 times [2020-01-16 19:10:20,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:20,936 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890066144] [2020-01-16 19:10:20,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:20,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:21,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:21,458 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890066144] [2020-01-16 19:10:21,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:21,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:21,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004006031] [2020-01-16 19:10:21,458 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:21,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:21,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:21,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:21,458 INFO L87 Difference]: Start difference. First operand 1576 states and 7055 transitions. Second operand 11 states. [2020-01-16 19:10:21,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:21,657 INFO L93 Difference]: Finished difference Result 2972 states and 11750 transitions. [2020-01-16 19:10:21,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:21,658 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:21,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:21,665 INFO L225 Difference]: With dead ends: 2972 [2020-01-16 19:10:21,665 INFO L226 Difference]: Without dead ends: 2957 [2020-01-16 19:10:21,666 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:21,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2957 states. [2020-01-16 19:10:21,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2957 to 1581. [2020-01-16 19:10:21,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 19:10:21,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7064 transitions. [2020-01-16 19:10:21,732 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7064 transitions. Word has length 28 [2020-01-16 19:10:21,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:21,732 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7064 transitions. [2020-01-16 19:10:21,733 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:21,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7064 transitions. [2020-01-16 19:10:21,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:21,735 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:21,735 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:21,735 INFO L426 AbstractCegarLoop]: === Iteration 816 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:21,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:21,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1925210384, now seen corresponding path program 808 times [2020-01-16 19:10:21,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:21,735 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703502934] [2020-01-16 19:10:21,735 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:21,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:22,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:22,259 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703502934] [2020-01-16 19:10:22,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:22,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:22,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532589068] [2020-01-16 19:10:22,259 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:22,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:22,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:22,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:22,260 INFO L87 Difference]: Start difference. First operand 1581 states and 7064 transitions. Second operand 11 states. [2020-01-16 19:10:22,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:22,475 INFO L93 Difference]: Finished difference Result 2974 states and 11749 transitions. [2020-01-16 19:10:22,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:22,476 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:22,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:22,483 INFO L225 Difference]: With dead ends: 2974 [2020-01-16 19:10:22,483 INFO L226 Difference]: Without dead ends: 2952 [2020-01-16 19:10:22,484 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:22,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2020-01-16 19:10:22,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 1576. [2020-01-16 19:10:22,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 19:10:22,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7050 transitions. [2020-01-16 19:10:22,550 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7050 transitions. Word has length 28 [2020-01-16 19:10:22,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:22,550 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7050 transitions. [2020-01-16 19:10:22,550 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:22,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7050 transitions. [2020-01-16 19:10:22,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:22,553 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:22,553 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:22,553 INFO L426 AbstractCegarLoop]: === Iteration 817 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:22,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:22,553 INFO L82 PathProgramCache]: Analyzing trace with hash -815900000, now seen corresponding path program 809 times [2020-01-16 19:10:22,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:22,553 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875839296] [2020-01-16 19:10:22,553 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:22,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:23,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:23,086 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875839296] [2020-01-16 19:10:23,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:23,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:23,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955581755] [2020-01-16 19:10:23,086 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:23,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:23,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:23,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:23,087 INFO L87 Difference]: Start difference. First operand 1576 states and 7050 transitions. Second operand 11 states. [2020-01-16 19:10:23,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:23,312 INFO L93 Difference]: Finished difference Result 2980 states and 11763 transitions. [2020-01-16 19:10:23,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:23,312 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:23,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:23,320 INFO L225 Difference]: With dead ends: 2980 [2020-01-16 19:10:23,320 INFO L226 Difference]: Without dead ends: 2962 [2020-01-16 19:10:23,320 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:23,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2962 states. [2020-01-16 19:10:23,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2962 to 1583. [2020-01-16 19:10:23,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 19:10:23,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7063 transitions. [2020-01-16 19:10:23,386 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7063 transitions. Word has length 28 [2020-01-16 19:10:23,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:23,386 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7063 transitions. [2020-01-16 19:10:23,386 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:23,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7063 transitions. [2020-01-16 19:10:23,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:23,389 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:23,389 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:23,389 INFO L426 AbstractCegarLoop]: === Iteration 818 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:23,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:23,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1387354806, now seen corresponding path program 810 times [2020-01-16 19:10:23,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:23,389 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394111565] [2020-01-16 19:10:23,389 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:23,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:23,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:23,912 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394111565] [2020-01-16 19:10:23,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:23,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:23,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565314309] [2020-01-16 19:10:23,912 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:23,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:23,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:23,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:23,913 INFO L87 Difference]: Start difference. First operand 1583 states and 7063 transitions. Second operand 11 states. [2020-01-16 19:10:24,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:24,174 INFO L93 Difference]: Finished difference Result 2979 states and 11754 transitions. [2020-01-16 19:10:24,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:24,174 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:24,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:24,181 INFO L225 Difference]: With dead ends: 2979 [2020-01-16 19:10:24,181 INFO L226 Difference]: Without dead ends: 2950 [2020-01-16 19:10:24,181 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:24,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2020-01-16 19:10:24,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 1571. [2020-01-16 19:10:24,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:10:24,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7036 transitions. [2020-01-16 19:10:24,247 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7036 transitions. Word has length 28 [2020-01-16 19:10:24,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:24,247 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7036 transitions. [2020-01-16 19:10:24,248 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:24,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7036 transitions. [2020-01-16 19:10:24,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:24,250 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:24,250 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:24,250 INFO L426 AbstractCegarLoop]: === Iteration 819 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:24,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:24,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1542222066, now seen corresponding path program 811 times [2020-01-16 19:10:24,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:24,250 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793955549] [2020-01-16 19:10:24,250 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:24,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:24,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:24,816 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793955549] [2020-01-16 19:10:24,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:24,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:24,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573985610] [2020-01-16 19:10:24,816 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:24,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:24,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:24,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:24,817 INFO L87 Difference]: Start difference. First operand 1571 states and 7036 transitions. Second operand 11 states. [2020-01-16 19:10:24,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:24,996 INFO L93 Difference]: Finished difference Result 3006 states and 11825 transitions. [2020-01-16 19:10:24,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:24,996 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:24,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:25,004 INFO L225 Difference]: With dead ends: 3006 [2020-01-16 19:10:25,004 INFO L226 Difference]: Without dead ends: 2986 [2020-01-16 19:10:25,005 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:25,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2986 states. [2020-01-16 19:10:25,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2986 to 1591. [2020-01-16 19:10:25,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1591 states. [2020-01-16 19:10:25,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1591 states to 1591 states and 7086 transitions. [2020-01-16 19:10:25,072 INFO L78 Accepts]: Start accepts. Automaton has 1591 states and 7086 transitions. Word has length 28 [2020-01-16 19:10:25,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:25,072 INFO L478 AbstractCegarLoop]: Abstraction has 1591 states and 7086 transitions. [2020-01-16 19:10:25,072 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:25,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1591 states and 7086 transitions. [2020-01-16 19:10:25,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:25,074 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:25,074 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:25,074 INFO L426 AbstractCegarLoop]: === Iteration 820 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:25,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:25,074 INFO L82 PathProgramCache]: Analyzing trace with hash -797519568, now seen corresponding path program 812 times [2020-01-16 19:10:25,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:25,075 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838479933] [2020-01-16 19:10:25,075 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:25,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:25,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:25,634 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838479933] [2020-01-16 19:10:25,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:25,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:25,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410956977] [2020-01-16 19:10:25,635 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:25,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:25,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:25,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:25,635 INFO L87 Difference]: Start difference. First operand 1591 states and 7086 transitions. Second operand 11 states. [2020-01-16 19:10:25,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:25,895 INFO L93 Difference]: Finished difference Result 3004 states and 11813 transitions. [2020-01-16 19:10:25,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:25,896 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:25,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:25,902 INFO L225 Difference]: With dead ends: 3004 [2020-01-16 19:10:25,902 INFO L226 Difference]: Without dead ends: 2976 [2020-01-16 19:10:25,902 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:25,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2976 states. [2020-01-16 19:10:25,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2976 to 1581. [2020-01-16 19:10:25,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 19:10:25,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7060 transitions. [2020-01-16 19:10:25,968 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7060 transitions. Word has length 28 [2020-01-16 19:10:25,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:25,968 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7060 transitions. [2020-01-16 19:10:25,968 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:25,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7060 transitions. [2020-01-16 19:10:25,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:25,970 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:25,971 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:25,971 INFO L426 AbstractCegarLoop]: === Iteration 821 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:25,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:25,971 INFO L82 PathProgramCache]: Analyzing trace with hash -2077451868, now seen corresponding path program 813 times [2020-01-16 19:10:25,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:25,971 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81795238] [2020-01-16 19:10:25,971 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:25,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:26,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:26,513 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81795238] [2020-01-16 19:10:26,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:26,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:26,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130766211] [2020-01-16 19:10:26,513 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:26,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:26,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:26,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:26,514 INFO L87 Difference]: Start difference. First operand 1581 states and 7060 transitions. Second operand 11 states. [2020-01-16 19:10:26,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:26,681 INFO L93 Difference]: Finished difference Result 3003 states and 11810 transitions. [2020-01-16 19:10:26,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:26,682 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:26,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:26,689 INFO L225 Difference]: With dead ends: 3003 [2020-01-16 19:10:26,690 INFO L226 Difference]: Without dead ends: 2983 [2020-01-16 19:10:26,690 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:26,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2983 states. [2020-01-16 19:10:26,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2983 to 1589. [2020-01-16 19:10:26,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1589 states. [2020-01-16 19:10:26,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 7074 transitions. [2020-01-16 19:10:26,756 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 7074 transitions. Word has length 28 [2020-01-16 19:10:26,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:26,757 INFO L478 AbstractCegarLoop]: Abstraction has 1589 states and 7074 transitions. [2020-01-16 19:10:26,757 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:26,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 7074 transitions. [2020-01-16 19:10:26,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:26,759 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:26,759 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:26,759 INFO L426 AbstractCegarLoop]: === Iteration 822 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:26,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:26,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1904204176, now seen corresponding path program 814 times [2020-01-16 19:10:26,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:26,759 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455597303] [2020-01-16 19:10:26,760 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:26,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:27,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:27,290 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455597303] [2020-01-16 19:10:27,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:27,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:27,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017865255] [2020-01-16 19:10:27,291 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:27,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:27,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:27,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:27,291 INFO L87 Difference]: Start difference. First operand 1589 states and 7074 transitions. Second operand 11 states. [2020-01-16 19:10:27,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:27,485 INFO L93 Difference]: Finished difference Result 3000 states and 11797 transitions. [2020-01-16 19:10:27,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:27,485 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:27,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:27,492 INFO L225 Difference]: With dead ends: 3000 [2020-01-16 19:10:27,492 INFO L226 Difference]: Without dead ends: 2975 [2020-01-16 19:10:27,492 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:27,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2975 states. [2020-01-16 19:10:27,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2975 to 1581. [2020-01-16 19:10:27,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 19:10:27,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7052 transitions. [2020-01-16 19:10:27,559 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7052 transitions. Word has length 28 [2020-01-16 19:10:27,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:27,559 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7052 transitions. [2020-01-16 19:10:27,559 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:27,559 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7052 transitions. [2020-01-16 19:10:27,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:27,562 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:27,562 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:27,562 INFO L426 AbstractCegarLoop]: === Iteration 823 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:27,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:27,562 INFO L82 PathProgramCache]: Analyzing trace with hash 278191588, now seen corresponding path program 815 times [2020-01-16 19:10:27,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:27,562 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194116288] [2020-01-16 19:10:27,562 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:27,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:28,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:28,100 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194116288] [2020-01-16 19:10:28,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:28,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:28,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354972251] [2020-01-16 19:10:28,101 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:28,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:28,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:28,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:28,101 INFO L87 Difference]: Start difference. First operand 1581 states and 7052 transitions. Second operand 11 states. [2020-01-16 19:10:28,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:28,300 INFO L93 Difference]: Finished difference Result 2998 states and 11794 transitions. [2020-01-16 19:10:28,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:28,301 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:28,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:28,308 INFO L225 Difference]: With dead ends: 2998 [2020-01-16 19:10:28,308 INFO L226 Difference]: Without dead ends: 2980 [2020-01-16 19:10:28,308 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:28,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2980 states. [2020-01-16 19:10:28,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2980 to 1588. [2020-01-16 19:10:28,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1588 states. [2020-01-16 19:10:28,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 7065 transitions. [2020-01-16 19:10:28,375 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 7065 transitions. Word has length 28 [2020-01-16 19:10:28,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:28,375 INFO L478 AbstractCegarLoop]: Abstraction has 1588 states and 7065 transitions. [2020-01-16 19:10:28,375 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:28,375 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 7065 transitions. [2020-01-16 19:10:28,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:28,377 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:28,377 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:28,377 INFO L426 AbstractCegarLoop]: === Iteration 824 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:28,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:28,378 INFO L82 PathProgramCache]: Analyzing trace with hash -293263218, now seen corresponding path program 816 times [2020-01-16 19:10:28,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:28,378 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699272554] [2020-01-16 19:10:28,378 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:28,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:28,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:28,918 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699272554] [2020-01-16 19:10:28,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:28,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:28,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86413789] [2020-01-16 19:10:28,919 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:28,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:28,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:28,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:28,919 INFO L87 Difference]: Start difference. First operand 1588 states and 7065 transitions. Second operand 11 states. [2020-01-16 19:10:29,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:29,183 INFO L93 Difference]: Finished difference Result 2997 states and 11785 transitions. [2020-01-16 19:10:29,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:29,183 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:29,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:29,190 INFO L225 Difference]: With dead ends: 2997 [2020-01-16 19:10:29,190 INFO L226 Difference]: Without dead ends: 2955 [2020-01-16 19:10:29,190 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:29,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2955 states. [2020-01-16 19:10:29,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2955 to 1563. [2020-01-16 19:10:29,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 19:10:29,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7013 transitions. [2020-01-16 19:10:29,256 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7013 transitions. Word has length 28 [2020-01-16 19:10:29,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:29,256 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7013 transitions. [2020-01-16 19:10:29,256 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:29,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7013 transitions. [2020-01-16 19:10:29,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:29,258 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:29,258 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:29,258 INFO L426 AbstractCegarLoop]: === Iteration 825 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:29,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:29,258 INFO L82 PathProgramCache]: Analyzing trace with hash -969642016, now seen corresponding path program 817 times [2020-01-16 19:10:29,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:29,259 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701085923] [2020-01-16 19:10:29,259 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:29,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:29,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:29,805 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701085923] [2020-01-16 19:10:29,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:29,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:29,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501561133] [2020-01-16 19:10:29,806 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:29,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:29,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:29,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:29,806 INFO L87 Difference]: Start difference. First operand 1563 states and 7013 transitions. Second operand 11 states. [2020-01-16 19:10:29,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:29,970 INFO L93 Difference]: Finished difference Result 3001 states and 11833 transitions. [2020-01-16 19:10:29,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:29,970 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:29,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:29,977 INFO L225 Difference]: With dead ends: 3001 [2020-01-16 19:10:29,977 INFO L226 Difference]: Without dead ends: 2985 [2020-01-16 19:10:29,977 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:30,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2985 states. [2020-01-16 19:10:30,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2985 to 1588. [2020-01-16 19:10:30,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1588 states. [2020-01-16 19:10:30,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 7093 transitions. [2020-01-16 19:10:30,044 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 7093 transitions. Word has length 28 [2020-01-16 19:10:30,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:30,044 INFO L478 AbstractCegarLoop]: Abstraction has 1588 states and 7093 transitions. [2020-01-16 19:10:30,044 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:30,044 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 7093 transitions. [2020-01-16 19:10:30,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:30,047 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:30,047 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:30,047 INFO L426 AbstractCegarLoop]: === Iteration 826 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:30,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:30,047 INFO L82 PathProgramCache]: Analyzing trace with hash -224939518, now seen corresponding path program 818 times [2020-01-16 19:10:30,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:30,047 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878497347] [2020-01-16 19:10:30,047 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:30,620 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 19:10:30,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:30,627 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878497347] [2020-01-16 19:10:30,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:30,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:30,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545320388] [2020-01-16 19:10:30,627 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:30,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:30,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:30,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:30,628 INFO L87 Difference]: Start difference. First operand 1588 states and 7093 transitions. Second operand 11 states. [2020-01-16 19:10:30,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:30,764 INFO L93 Difference]: Finished difference Result 3005 states and 11834 transitions. [2020-01-16 19:10:30,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:30,765 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:30,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:30,772 INFO L225 Difference]: With dead ends: 3005 [2020-01-16 19:10:30,772 INFO L226 Difference]: Without dead ends: 2978 [2020-01-16 19:10:30,772 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:30,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2978 states. [2020-01-16 19:10:30,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2978 to 1581. [2020-01-16 19:10:30,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 19:10:30,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7073 transitions. [2020-01-16 19:10:30,840 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7073 transitions. Word has length 28 [2020-01-16 19:10:30,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:30,840 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7073 transitions. [2020-01-16 19:10:30,840 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:30,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7073 transitions. [2020-01-16 19:10:30,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:30,842 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:30,842 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:30,842 INFO L426 AbstractCegarLoop]: === Iteration 827 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:30,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:30,843 INFO L82 PathProgramCache]: Analyzing trace with hash 641298942, now seen corresponding path program 819 times [2020-01-16 19:10:30,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:30,843 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067361643] [2020-01-16 19:10:30,843 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:30,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:31,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:31,381 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067361643] [2020-01-16 19:10:31,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:31,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:31,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876515075] [2020-01-16 19:10:31,382 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:31,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:31,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:31,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:31,382 INFO L87 Difference]: Start difference. First operand 1581 states and 7073 transitions. Second operand 11 states. [2020-01-16 19:10:31,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:31,547 INFO L93 Difference]: Finished difference Result 2998 states and 11821 transitions. [2020-01-16 19:10:31,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:31,548 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:31,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:31,555 INFO L225 Difference]: With dead ends: 2998 [2020-01-16 19:10:31,555 INFO L226 Difference]: Without dead ends: 2982 [2020-01-16 19:10:31,555 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:31,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2982 states. [2020-01-16 19:10:31,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2982 to 1587. [2020-01-16 19:10:31,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1587 states. [2020-01-16 19:10:31,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 7084 transitions. [2020-01-16 19:10:31,622 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 7084 transitions. Word has length 28 [2020-01-16 19:10:31,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:31,622 INFO L478 AbstractCegarLoop]: Abstraction has 1587 states and 7084 transitions. [2020-01-16 19:10:31,622 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:31,623 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 7084 transitions. [2020-01-16 19:10:31,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:31,625 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:31,625 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:31,625 INFO L426 AbstractCegarLoop]: === Iteration 828 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:31,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:31,625 INFO L82 PathProgramCache]: Analyzing trace with hash 2130703938, now seen corresponding path program 820 times [2020-01-16 19:10:31,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:31,625 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041294308] [2020-01-16 19:10:31,625 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:31,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:32,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:32,160 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041294308] [2020-01-16 19:10:32,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:32,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:32,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669921096] [2020-01-16 19:10:32,160 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:32,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:32,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:32,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:32,161 INFO L87 Difference]: Start difference. First operand 1587 states and 7084 transitions. Second operand 11 states. [2020-01-16 19:10:32,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:32,363 INFO L93 Difference]: Finished difference Result 3000 states and 11819 transitions. [2020-01-16 19:10:32,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:32,364 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:32,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:32,372 INFO L225 Difference]: With dead ends: 3000 [2020-01-16 19:10:32,372 INFO L226 Difference]: Without dead ends: 2976 [2020-01-16 19:10:32,372 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:32,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2976 states. [2020-01-16 19:10:32,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2976 to 1581. [2020-01-16 19:10:32,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 19:10:32,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7067 transitions. [2020-01-16 19:10:32,438 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7067 transitions. Word has length 28 [2020-01-16 19:10:32,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:32,438 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7067 transitions. [2020-01-16 19:10:32,438 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:32,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7067 transitions. [2020-01-16 19:10:32,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:32,440 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:32,440 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:32,440 INFO L426 AbstractCegarLoop]: === Iteration 829 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:32,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:32,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1298024898, now seen corresponding path program 821 times [2020-01-16 19:10:32,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:32,441 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807634887] [2020-01-16 19:10:32,441 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:32,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:33,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:33,002 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807634887] [2020-01-16 19:10:33,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:33,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:33,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592482756] [2020-01-16 19:10:33,002 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:33,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:33,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:33,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:33,003 INFO L87 Difference]: Start difference. First operand 1581 states and 7067 transitions. Second operand 11 states. [2020-01-16 19:10:33,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:33,124 INFO L93 Difference]: Finished difference Result 3010 states and 11838 transitions. [2020-01-16 19:10:33,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:33,125 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:33,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:33,133 INFO L225 Difference]: With dead ends: 3010 [2020-01-16 19:10:33,133 INFO L226 Difference]: Without dead ends: 2990 [2020-01-16 19:10:33,133 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:33,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2990 states. [2020-01-16 19:10:33,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2990 to 1591. [2020-01-16 19:10:33,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1591 states. [2020-01-16 19:10:33,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1591 states to 1591 states and 7084 transitions. [2020-01-16 19:10:33,199 INFO L78 Accepts]: Start accepts. Automaton has 1591 states and 7084 transitions. Word has length 28 [2020-01-16 19:10:33,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:33,200 INFO L478 AbstractCegarLoop]: Abstraction has 1591 states and 7084 transitions. [2020-01-16 19:10:33,200 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:33,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1591 states and 7084 transitions. [2020-01-16 19:10:33,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:33,202 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:33,202 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:33,202 INFO L426 AbstractCegarLoop]: === Iteration 830 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:33,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:33,202 INFO L82 PathProgramCache]: Analyzing trace with hash -553322400, now seen corresponding path program 822 times [2020-01-16 19:10:33,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:33,203 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210454382] [2020-01-16 19:10:33,203 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:33,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:33,757 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 19:10:33,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:33,764 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210454382] [2020-01-16 19:10:33,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:33,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:33,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510163475] [2020-01-16 19:10:33,764 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:33,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:33,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:33,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:33,765 INFO L87 Difference]: Start difference. First operand 1591 states and 7084 transitions. Second operand 11 states. [2020-01-16 19:10:33,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:33,929 INFO L93 Difference]: Finished difference Result 3008 states and 11826 transitions. [2020-01-16 19:10:33,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:33,929 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:33,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:33,936 INFO L225 Difference]: With dead ends: 3008 [2020-01-16 19:10:33,936 INFO L226 Difference]: Without dead ends: 2972 [2020-01-16 19:10:33,936 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:33,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2972 states. [2020-01-16 19:10:33,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2972 to 1573. [2020-01-16 19:10:33,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:10:34,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7044 transitions. [2020-01-16 19:10:34,003 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7044 transitions. Word has length 28 [2020-01-16 19:10:34,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:34,003 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7044 transitions. [2020-01-16 19:10:34,003 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:34,003 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7044 transitions. [2020-01-16 19:10:34,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:34,005 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:34,005 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:34,006 INFO L426 AbstractCegarLoop]: === Iteration 831 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:34,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:34,006 INFO L82 PathProgramCache]: Analyzing trace with hash -381896694, now seen corresponding path program 823 times [2020-01-16 19:10:34,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:34,006 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659492948] [2020-01-16 19:10:34,006 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:34,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:34,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:34,543 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659492948] [2020-01-16 19:10:34,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:34,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:34,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644529505] [2020-01-16 19:10:34,543 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:34,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:34,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:34,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:34,544 INFO L87 Difference]: Start difference. First operand 1573 states and 7044 transitions. Second operand 11 states. [2020-01-16 19:10:34,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:34,718 INFO L93 Difference]: Finished difference Result 2997 states and 11817 transitions. [2020-01-16 19:10:34,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:34,719 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:34,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:34,726 INFO L225 Difference]: With dead ends: 2997 [2020-01-16 19:10:34,726 INFO L226 Difference]: Without dead ends: 2981 [2020-01-16 19:10:34,726 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:34,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2981 states. [2020-01-16 19:10:34,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2981 to 1587. [2020-01-16 19:10:34,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1587 states. [2020-01-16 19:10:34,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 7083 transitions. [2020-01-16 19:10:34,793 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 7083 transitions. Word has length 28 [2020-01-16 19:10:34,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:34,793 INFO L478 AbstractCegarLoop]: Abstraction has 1587 states and 7083 transitions. [2020-01-16 19:10:34,793 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:34,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 7083 transitions. [2020-01-16 19:10:34,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:34,795 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:34,795 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:34,796 INFO L426 AbstractCegarLoop]: === Iteration 832 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:34,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:34,796 INFO L82 PathProgramCache]: Analyzing trace with hash 362805804, now seen corresponding path program 824 times [2020-01-16 19:10:34,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:34,796 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043140595] [2020-01-16 19:10:34,796 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:34,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:35,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:35,340 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043140595] [2020-01-16 19:10:35,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:35,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:35,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582176064] [2020-01-16 19:10:35,341 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:35,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:35,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:35,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:35,341 INFO L87 Difference]: Start difference. First operand 1587 states and 7083 transitions. Second operand 11 states. [2020-01-16 19:10:35,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:35,477 INFO L93 Difference]: Finished difference Result 3001 states and 11818 transitions. [2020-01-16 19:10:35,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:35,478 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:35,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:35,485 INFO L225 Difference]: With dead ends: 3001 [2020-01-16 19:10:35,485 INFO L226 Difference]: Without dead ends: 2974 [2020-01-16 19:10:35,485 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:35,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2974 states. [2020-01-16 19:10:35,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2974 to 1580. [2020-01-16 19:10:35,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 19:10:35,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7063 transitions. [2020-01-16 19:10:35,552 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7063 transitions. Word has length 28 [2020-01-16 19:10:35,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:35,552 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7063 transitions. [2020-01-16 19:10:35,552 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:35,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7063 transitions. [2020-01-16 19:10:35,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:35,554 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:35,554 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:35,554 INFO L426 AbstractCegarLoop]: === Iteration 833 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:35,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:35,555 INFO L82 PathProgramCache]: Analyzing trace with hash 693814462, now seen corresponding path program 825 times [2020-01-16 19:10:35,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:35,555 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851348168] [2020-01-16 19:10:35,555 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:35,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:36,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:36,097 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851348168] [2020-01-16 19:10:36,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:36,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:36,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841050135] [2020-01-16 19:10:36,097 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:36,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:36,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:36,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:36,097 INFO L87 Difference]: Start difference. First operand 1580 states and 7063 transitions. Second operand 11 states. [2020-01-16 19:10:36,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:36,258 INFO L93 Difference]: Finished difference Result 2993 states and 11803 transitions. [2020-01-16 19:10:36,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:36,259 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:36,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:36,266 INFO L225 Difference]: With dead ends: 2993 [2020-01-16 19:10:36,266 INFO L226 Difference]: Without dead ends: 2977 [2020-01-16 19:10:36,266 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:36,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2977 states. [2020-01-16 19:10:36,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2977 to 1586. [2020-01-16 19:10:36,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1586 states. [2020-01-16 19:10:36,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 7074 transitions. [2020-01-16 19:10:36,333 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 7074 transitions. Word has length 28 [2020-01-16 19:10:36,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:36,333 INFO L478 AbstractCegarLoop]: Abstraction has 1586 states and 7074 transitions. [2020-01-16 19:10:36,333 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:36,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 7074 transitions. [2020-01-16 19:10:36,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:36,335 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:36,335 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:36,336 INFO L426 AbstractCegarLoop]: === Iteration 834 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:36,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:36,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1611764652, now seen corresponding path program 826 times [2020-01-16 19:10:36,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:36,336 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177654402] [2020-01-16 19:10:36,336 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:36,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:36,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:36,900 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177654402] [2020-01-16 19:10:36,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:36,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:36,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35931324] [2020-01-16 19:10:36,900 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:36,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:36,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:36,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:36,901 INFO L87 Difference]: Start difference. First operand 1586 states and 7074 transitions. Second operand 11 states. [2020-01-16 19:10:37,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:37,059 INFO L93 Difference]: Finished difference Result 2994 states and 11799 transitions. [2020-01-16 19:10:37,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:37,059 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:37,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:37,067 INFO L225 Difference]: With dead ends: 2994 [2020-01-16 19:10:37,067 INFO L226 Difference]: Without dead ends: 2971 [2020-01-16 19:10:37,067 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:37,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2971 states. [2020-01-16 19:10:37,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2971 to 1580. [2020-01-16 19:10:37,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 19:10:37,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7057 transitions. [2020-01-16 19:10:37,133 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7057 transitions. Word has length 28 [2020-01-16 19:10:37,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:37,134 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7057 transitions. [2020-01-16 19:10:37,134 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:37,134 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7057 transitions. [2020-01-16 19:10:37,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:37,136 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:37,136 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:37,136 INFO L426 AbstractCegarLoop]: === Iteration 835 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:37,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:37,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1245509378, now seen corresponding path program 827 times [2020-01-16 19:10:37,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:37,136 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937584108] [2020-01-16 19:10:37,137 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:37,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:37,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:37,685 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937584108] [2020-01-16 19:10:37,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:37,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:37,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405720696] [2020-01-16 19:10:37,686 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:37,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:37,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:37,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:37,686 INFO L87 Difference]: Start difference. First operand 1580 states and 7057 transitions. Second operand 11 states. [2020-01-16 19:10:37,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:37,826 INFO L93 Difference]: Finished difference Result 3003 states and 11816 transitions. [2020-01-16 19:10:37,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:37,826 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:37,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:37,834 INFO L225 Difference]: With dead ends: 3003 [2020-01-16 19:10:37,834 INFO L226 Difference]: Without dead ends: 2983 [2020-01-16 19:10:37,834 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:37,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2983 states. [2020-01-16 19:10:37,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2983 to 1588. [2020-01-16 19:10:37,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1588 states. [2020-01-16 19:10:37,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 7071 transitions. [2020-01-16 19:10:37,901 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 7071 transitions. Word has length 28 [2020-01-16 19:10:37,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:37,901 INFO L478 AbstractCegarLoop]: Abstraction has 1588 states and 7071 transitions. [2020-01-16 19:10:37,901 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:37,901 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 7071 transitions. [2020-01-16 19:10:37,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:37,903 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:37,903 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:37,903 INFO L426 AbstractCegarLoop]: === Iteration 836 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:37,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:37,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1072261686, now seen corresponding path program 828 times [2020-01-16 19:10:37,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:37,904 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668638757] [2020-01-16 19:10:37,904 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:37,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:38,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:38,450 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668638757] [2020-01-16 19:10:38,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:38,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:38,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272163237] [2020-01-16 19:10:38,450 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:38,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:38,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:38,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:38,451 INFO L87 Difference]: Start difference. First operand 1588 states and 7071 transitions. Second operand 11 states. [2020-01-16 19:10:38,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:38,662 INFO L93 Difference]: Finished difference Result 3000 states and 11803 transitions. [2020-01-16 19:10:38,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:38,663 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:38,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:38,670 INFO L225 Difference]: With dead ends: 3000 [2020-01-16 19:10:38,671 INFO L226 Difference]: Without dead ends: 2968 [2020-01-16 19:10:38,671 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:38,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2968 states. [2020-01-16 19:10:38,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2968 to 1573. [2020-01-16 19:10:38,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:10:38,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7037 transitions. [2020-01-16 19:10:38,738 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7037 transitions. Word has length 28 [2020-01-16 19:10:38,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:38,738 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7037 transitions. [2020-01-16 19:10:38,738 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:38,738 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7037 transitions. [2020-01-16 19:10:38,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:38,740 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:38,740 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:38,740 INFO L426 AbstractCegarLoop]: === Iteration 837 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:38,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:38,740 INFO L82 PathProgramCache]: Analyzing trace with hash -371393590, now seen corresponding path program 829 times [2020-01-16 19:10:38,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:38,741 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620599015] [2020-01-16 19:10:38,741 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:38,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:39,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:39,275 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620599015] [2020-01-16 19:10:39,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:39,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:39,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789837345] [2020-01-16 19:10:39,276 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:39,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:39,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:39,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:39,276 INFO L87 Difference]: Start difference. First operand 1573 states and 7037 transitions. Second operand 11 states. [2020-01-16 19:10:39,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:39,510 INFO L93 Difference]: Finished difference Result 2989 states and 11795 transitions. [2020-01-16 19:10:39,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:39,510 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:39,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:39,517 INFO L225 Difference]: With dead ends: 2989 [2020-01-16 19:10:39,518 INFO L226 Difference]: Without dead ends: 2973 [2020-01-16 19:10:39,518 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:39,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2973 states. [2020-01-16 19:10:39,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2973 to 1585. [2020-01-16 19:10:39,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 19:10:39,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7071 transitions. [2020-01-16 19:10:39,585 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7071 transitions. Word has length 28 [2020-01-16 19:10:39,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:39,585 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7071 transitions. [2020-01-16 19:10:39,586 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:39,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7071 transitions. [2020-01-16 19:10:39,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:39,588 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:39,588 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:39,588 INFO L426 AbstractCegarLoop]: === Iteration 838 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:39,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:39,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1118011406, now seen corresponding path program 830 times [2020-01-16 19:10:39,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:39,588 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965441806] [2020-01-16 19:10:39,588 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:39,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:40,118 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 19:10:40,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:40,125 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965441806] [2020-01-16 19:10:40,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:40,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:40,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731777149] [2020-01-16 19:10:40,125 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:40,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:40,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:40,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:40,126 INFO L87 Difference]: Start difference. First operand 1585 states and 7071 transitions. Second operand 11 states. [2020-01-16 19:10:40,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:40,305 INFO L93 Difference]: Finished difference Result 2991 states and 11793 transitions. [2020-01-16 19:10:40,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:40,306 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:40,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:40,313 INFO L225 Difference]: With dead ends: 2991 [2020-01-16 19:10:40,313 INFO L226 Difference]: Without dead ends: 2967 [2020-01-16 19:10:40,313 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:40,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2967 states. [2020-01-16 19:10:40,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2967 to 1579. [2020-01-16 19:10:40,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 19:10:40,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7054 transitions. [2020-01-16 19:10:40,380 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7054 transitions. Word has length 28 [2020-01-16 19:10:40,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:40,380 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7054 transitions. [2020-01-16 19:10:40,380 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:40,380 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7054 transitions. [2020-01-16 19:10:40,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:40,382 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:40,382 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:40,382 INFO L426 AbstractCegarLoop]: === Iteration 839 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:40,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:40,382 INFO L82 PathProgramCache]: Analyzing trace with hash -906623392, now seen corresponding path program 831 times [2020-01-16 19:10:40,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:40,383 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574217708] [2020-01-16 19:10:40,383 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:40,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:40,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:40,923 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574217708] [2020-01-16 19:10:40,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:40,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:40,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755290005] [2020-01-16 19:10:40,924 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:40,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:40,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:40,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:40,924 INFO L87 Difference]: Start difference. First operand 1579 states and 7054 transitions. Second operand 11 states. [2020-01-16 19:10:41,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:41,094 INFO L93 Difference]: Finished difference Result 2988 states and 11787 transitions. [2020-01-16 19:10:41,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:41,095 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:41,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:41,102 INFO L225 Difference]: With dead ends: 2988 [2020-01-16 19:10:41,102 INFO L226 Difference]: Without dead ends: 2972 [2020-01-16 19:10:41,102 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:41,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2972 states. [2020-01-16 19:10:41,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2972 to 1585. [2020-01-16 19:10:41,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 19:10:41,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7065 transitions. [2020-01-16 19:10:41,167 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7065 transitions. Word has length 28 [2020-01-16 19:10:41,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:41,168 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7065 transitions. [2020-01-16 19:10:41,168 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:41,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7065 transitions. [2020-01-16 19:10:41,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:41,170 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:41,170 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:41,170 INFO L426 AbstractCegarLoop]: === Iteration 840 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:41,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:41,170 INFO L82 PathProgramCache]: Analyzing trace with hash 11326798, now seen corresponding path program 832 times [2020-01-16 19:10:41,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:41,170 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395601150] [2020-01-16 19:10:41,171 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:41,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:41,716 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 19:10:41,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:41,723 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395601150] [2020-01-16 19:10:41,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:41,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:41,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281455209] [2020-01-16 19:10:41,723 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:41,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:41,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:41,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:41,724 INFO L87 Difference]: Start difference. First operand 1585 states and 7065 transitions. Second operand 11 states. [2020-01-16 19:10:41,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:41,892 INFO L93 Difference]: Finished difference Result 2989 states and 11783 transitions. [2020-01-16 19:10:41,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:41,893 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:41,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:41,900 INFO L225 Difference]: With dead ends: 2989 [2020-01-16 19:10:41,900 INFO L226 Difference]: Without dead ends: 2966 [2020-01-16 19:10:41,900 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:41,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2966 states. [2020-01-16 19:10:41,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2966 to 1579. [2020-01-16 19:10:41,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 19:10:41,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7048 transitions. [2020-01-16 19:10:41,966 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7048 transitions. Word has length 28 [2020-01-16 19:10:41,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:41,966 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7048 transitions. [2020-01-16 19:10:41,966 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:41,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7048 transitions. [2020-01-16 19:10:41,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:41,968 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:41,968 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:41,969 INFO L426 AbstractCegarLoop]: === Iteration 841 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:41,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:41,969 INFO L82 PathProgramCache]: Analyzing trace with hash -490303776, now seen corresponding path program 833 times [2020-01-16 19:10:41,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:41,969 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3606121] [2020-01-16 19:10:41,969 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:41,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:42,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:42,509 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3606121] [2020-01-16 19:10:42,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:42,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:42,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984217631] [2020-01-16 19:10:42,510 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:42,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:42,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:42,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:42,510 INFO L87 Difference]: Start difference. First operand 1579 states and 7048 transitions. Second operand 11 states. [2020-01-16 19:10:42,692 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2020-01-16 19:10:42,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:42,711 INFO L93 Difference]: Finished difference Result 2993 states and 11792 transitions. [2020-01-16 19:10:42,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:42,711 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:42,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:42,718 INFO L225 Difference]: With dead ends: 2993 [2020-01-16 19:10:42,719 INFO L226 Difference]: Without dead ends: 2975 [2020-01-16 19:10:42,719 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:42,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2975 states. [2020-01-16 19:10:42,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2975 to 1586. [2020-01-16 19:10:42,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1586 states. [2020-01-16 19:10:42,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 7061 transitions. [2020-01-16 19:10:42,784 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 7061 transitions. Word has length 28 [2020-01-16 19:10:42,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:42,784 INFO L478 AbstractCegarLoop]: Abstraction has 1586 states and 7061 transitions. [2020-01-16 19:10:42,784 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:42,784 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 7061 transitions. [2020-01-16 19:10:42,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:42,787 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:42,787 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:42,787 INFO L426 AbstractCegarLoop]: === Iteration 842 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:42,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:42,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1061758582, now seen corresponding path program 834 times [2020-01-16 19:10:42,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:42,787 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767814365] [2020-01-16 19:10:42,787 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:42,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:43,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:43,325 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767814365] [2020-01-16 19:10:43,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:43,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:43,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988285789] [2020-01-16 19:10:43,325 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:43,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:43,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:43,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:43,325 INFO L87 Difference]: Start difference. First operand 1586 states and 7061 transitions. Second operand 11 states. [2020-01-16 19:10:43,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:43,503 INFO L93 Difference]: Finished difference Result 2992 states and 11783 transitions. [2020-01-16 19:10:43,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:43,504 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:43,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:43,512 INFO L225 Difference]: With dead ends: 2992 [2020-01-16 19:10:43,512 INFO L226 Difference]: Without dead ends: 2962 [2020-01-16 19:10:43,512 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:43,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2962 states. [2020-01-16 19:10:43,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2962 to 1573. [2020-01-16 19:10:43,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:10:43,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7031 transitions. [2020-01-16 19:10:43,579 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7031 transitions. Word has length 28 [2020-01-16 19:10:43,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:43,579 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7031 transitions. [2020-01-16 19:10:43,579 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:43,579 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7031 transitions. [2020-01-16 19:10:43,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:43,581 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:43,581 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:43,581 INFO L426 AbstractCegarLoop]: === Iteration 843 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:43,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:43,582 INFO L82 PathProgramCache]: Analyzing trace with hash 383812012, now seen corresponding path program 835 times [2020-01-16 19:10:43,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:43,582 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239320027] [2020-01-16 19:10:43,582 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:43,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:44,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:44,138 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239320027] [2020-01-16 19:10:44,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:44,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:44,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128129578] [2020-01-16 19:10:44,138 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:44,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:44,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:44,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:44,138 INFO L87 Difference]: Start difference. First operand 1573 states and 7031 transitions. Second operand 11 states. [2020-01-16 19:10:44,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:44,299 INFO L93 Difference]: Finished difference Result 3015 states and 11843 transitions. [2020-01-16 19:10:44,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:44,299 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:44,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:44,306 INFO L225 Difference]: With dead ends: 3015 [2020-01-16 19:10:44,307 INFO L226 Difference]: Without dead ends: 2995 [2020-01-16 19:10:44,307 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:44,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2995 states. [2020-01-16 19:10:44,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2995 to 1593. [2020-01-16 19:10:44,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1593 states. [2020-01-16 19:10:44,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1593 states to 1593 states and 7081 transitions. [2020-01-16 19:10:44,375 INFO L78 Accepts]: Start accepts. Automaton has 1593 states and 7081 transitions. Word has length 28 [2020-01-16 19:10:44,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:44,375 INFO L478 AbstractCegarLoop]: Abstraction has 1593 states and 7081 transitions. [2020-01-16 19:10:44,376 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:44,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1593 states and 7081 transitions. [2020-01-16 19:10:44,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:44,378 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:44,378 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:44,378 INFO L426 AbstractCegarLoop]: === Iteration 844 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:44,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:44,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1128514510, now seen corresponding path program 836 times [2020-01-16 19:10:44,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:44,378 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042394503] [2020-01-16 19:10:44,379 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:44,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:44,927 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 19:10:44,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:44,935 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042394503] [2020-01-16 19:10:44,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:44,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:44,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342536424] [2020-01-16 19:10:44,935 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:44,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:44,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:44,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:44,936 INFO L87 Difference]: Start difference. First operand 1593 states and 7081 transitions. Second operand 11 states. [2020-01-16 19:10:45,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:45,109 INFO L93 Difference]: Finished difference Result 3013 states and 11831 transitions. [2020-01-16 19:10:45,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:45,110 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:45,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:45,117 INFO L225 Difference]: With dead ends: 3013 [2020-01-16 19:10:45,117 INFO L226 Difference]: Without dead ends: 2985 [2020-01-16 19:10:45,117 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:45,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2985 states. [2020-01-16 19:10:45,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2985 to 1583. [2020-01-16 19:10:45,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 19:10:45,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7055 transitions. [2020-01-16 19:10:45,184 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7055 transitions. Word has length 28 [2020-01-16 19:10:45,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:45,185 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7055 transitions. [2020-01-16 19:10:45,185 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:45,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7055 transitions. [2020-01-16 19:10:45,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:45,187 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:45,187 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:45,187 INFO L426 AbstractCegarLoop]: === Iteration 845 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:45,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:45,187 INFO L82 PathProgramCache]: Analyzing trace with hash -151417790, now seen corresponding path program 837 times [2020-01-16 19:10:45,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:45,187 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612493651] [2020-01-16 19:10:45,187 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:45,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:45,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:45,744 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612493651] [2020-01-16 19:10:45,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:45,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:45,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694121656] [2020-01-16 19:10:45,744 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:45,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:45,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:45,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:45,745 INFO L87 Difference]: Start difference. First operand 1583 states and 7055 transitions. Second operand 11 states. [2020-01-16 19:10:45,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:45,884 INFO L93 Difference]: Finished difference Result 3012 states and 11828 transitions. [2020-01-16 19:10:45,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:45,884 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:45,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:45,891 INFO L225 Difference]: With dead ends: 3012 [2020-01-16 19:10:45,891 INFO L226 Difference]: Without dead ends: 2992 [2020-01-16 19:10:45,891 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:45,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2992 states. [2020-01-16 19:10:45,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2992 to 1591. [2020-01-16 19:10:45,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1591 states. [2020-01-16 19:10:45,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1591 states to 1591 states and 7069 transitions. [2020-01-16 19:10:45,960 INFO L78 Accepts]: Start accepts. Automaton has 1591 states and 7069 transitions. Word has length 28 [2020-01-16 19:10:45,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:45,960 INFO L478 AbstractCegarLoop]: Abstraction has 1591 states and 7069 transitions. [2020-01-16 19:10:45,960 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:45,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1591 states and 7069 transitions. [2020-01-16 19:10:45,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:45,963 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:45,963 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:45,963 INFO L426 AbstractCegarLoop]: === Iteration 846 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:45,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:45,963 INFO L82 PathProgramCache]: Analyzing trace with hash 21829902, now seen corresponding path program 838 times [2020-01-16 19:10:45,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:45,963 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542380277] [2020-01-16 19:10:45,963 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:45,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:46,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:46,518 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542380277] [2020-01-16 19:10:46,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:46,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:46,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9780907] [2020-01-16 19:10:46,518 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:46,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:46,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:46,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:46,519 INFO L87 Difference]: Start difference. First operand 1591 states and 7069 transitions. Second operand 11 states. [2020-01-16 19:10:46,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:46,687 INFO L93 Difference]: Finished difference Result 3009 states and 11815 transitions. [2020-01-16 19:10:46,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:46,687 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:46,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:46,694 INFO L225 Difference]: With dead ends: 3009 [2020-01-16 19:10:46,694 INFO L226 Difference]: Without dead ends: 2984 [2020-01-16 19:10:46,694 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:46,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2984 states. [2020-01-16 19:10:46,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2984 to 1583. [2020-01-16 19:10:46,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 19:10:46,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7047 transitions. [2020-01-16 19:10:46,760 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7047 transitions. Word has length 28 [2020-01-16 19:10:46,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:46,760 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7047 transitions. [2020-01-16 19:10:46,761 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:46,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7047 transitions. [2020-01-16 19:10:46,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:46,763 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:46,763 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:46,763 INFO L426 AbstractCegarLoop]: === Iteration 847 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:46,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:46,763 INFO L82 PathProgramCache]: Analyzing trace with hash -2090741630, now seen corresponding path program 839 times [2020-01-16 19:10:46,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:46,763 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677073929] [2020-01-16 19:10:46,763 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:46,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:47,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:47,314 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677073929] [2020-01-16 19:10:47,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:47,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:47,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081592136] [2020-01-16 19:10:47,315 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:47,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:47,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:47,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:47,315 INFO L87 Difference]: Start difference. First operand 1583 states and 7047 transitions. Second operand 11 states. [2020-01-16 19:10:47,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:47,512 INFO L93 Difference]: Finished difference Result 3007 states and 11812 transitions. [2020-01-16 19:10:47,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:47,513 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:47,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:47,520 INFO L225 Difference]: With dead ends: 3007 [2020-01-16 19:10:47,520 INFO L226 Difference]: Without dead ends: 2989 [2020-01-16 19:10:47,521 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:47,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2020-01-16 19:10:47,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 1590. [2020-01-16 19:10:47,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1590 states. [2020-01-16 19:10:47,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 7060 transitions. [2020-01-16 19:10:47,589 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 7060 transitions. Word has length 28 [2020-01-16 19:10:47,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:47,589 INFO L478 AbstractCegarLoop]: Abstraction has 1590 states and 7060 transitions. [2020-01-16 19:10:47,589 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:47,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 7060 transitions. [2020-01-16 19:10:47,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:47,591 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:47,591 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:47,591 INFO L426 AbstractCegarLoop]: === Iteration 848 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:47,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:47,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1632770860, now seen corresponding path program 840 times [2020-01-16 19:10:47,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:47,592 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010032234] [2020-01-16 19:10:47,592 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:47,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:48,131 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 19:10:48,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:48,138 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010032234] [2020-01-16 19:10:48,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:48,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:48,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607091360] [2020-01-16 19:10:48,139 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:48,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:48,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:48,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:48,139 INFO L87 Difference]: Start difference. First operand 1590 states and 7060 transitions. Second operand 11 states. [2020-01-16 19:10:48,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:48,317 INFO L93 Difference]: Finished difference Result 3006 states and 11803 transitions. [2020-01-16 19:10:48,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:48,317 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:48,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:48,324 INFO L225 Difference]: With dead ends: 3006 [2020-01-16 19:10:48,324 INFO L226 Difference]: Without dead ends: 2952 [2020-01-16 19:10:48,324 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:48,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2020-01-16 19:10:48,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 1553. [2020-01-16 19:10:48,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-01-16 19:10:48,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 6987 transitions. [2020-01-16 19:10:48,390 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 6987 transitions. Word has length 28 [2020-01-16 19:10:48,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:48,390 INFO L478 AbstractCegarLoop]: Abstraction has 1553 states and 6987 transitions. [2020-01-16 19:10:48,390 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:48,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 6987 transitions. [2020-01-16 19:10:48,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:48,392 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:48,392 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:48,392 INFO L426 AbstractCegarLoop]: === Iteration 849 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:48,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:48,392 INFO L82 PathProgramCache]: Analyzing trace with hash -471497986, now seen corresponding path program 841 times [2020-01-16 19:10:48,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:48,393 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456424448] [2020-01-16 19:10:48,393 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:48,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:48,829 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 29 [2020-01-16 19:10:48,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:48,948 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456424448] [2020-01-16 19:10:48,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:48,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:48,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62873590] [2020-01-16 19:10:48,949 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:48,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:48,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:48,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:48,949 INFO L87 Difference]: Start difference. First operand 1553 states and 6987 transitions. Second operand 11 states. [2020-01-16 19:10:49,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:49,122 INFO L93 Difference]: Finished difference Result 2917 states and 11586 transitions. [2020-01-16 19:10:49,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:49,123 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:49,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:49,130 INFO L225 Difference]: With dead ends: 2917 [2020-01-16 19:10:49,130 INFO L226 Difference]: Without dead ends: 2902 [2020-01-16 19:10:49,130 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:49,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2902 states. [2020-01-16 19:10:49,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2902 to 1576. [2020-01-16 19:10:49,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 19:10:49,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7075 transitions. [2020-01-16 19:10:49,196 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7075 transitions. Word has length 28 [2020-01-16 19:10:49,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:49,196 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7075 transitions. [2020-01-16 19:10:49,196 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:49,196 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7075 transitions. [2020-01-16 19:10:49,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:49,199 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:49,199 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:49,199 INFO L426 AbstractCegarLoop]: === Iteration 850 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:49,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:49,199 INFO L82 PathProgramCache]: Analyzing trace with hash 273204512, now seen corresponding path program 842 times [2020-01-16 19:10:49,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:49,199 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422734940] [2020-01-16 19:10:49,199 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:49,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:49,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:49,730 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422734940] [2020-01-16 19:10:49,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:49,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:49,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57579161] [2020-01-16 19:10:49,731 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:49,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:49,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:49,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:49,731 INFO L87 Difference]: Start difference. First operand 1576 states and 7075 transitions. Second operand 11 states. [2020-01-16 19:10:49,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:49,911 INFO L93 Difference]: Finished difference Result 2918 states and 11583 transitions. [2020-01-16 19:10:49,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:49,911 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:49,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:49,918 INFO L225 Difference]: With dead ends: 2918 [2020-01-16 19:10:49,918 INFO L226 Difference]: Without dead ends: 2897 [2020-01-16 19:10:49,919 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:49,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2897 states. [2020-01-16 19:10:49,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2897 to 1571. [2020-01-16 19:10:49,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:10:49,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7061 transitions. [2020-01-16 19:10:49,984 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7061 transitions. Word has length 28 [2020-01-16 19:10:49,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:49,984 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7061 transitions. [2020-01-16 19:10:49,985 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:49,985 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7061 transitions. [2020-01-16 19:10:49,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:49,987 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:49,987 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:49,987 INFO L426 AbstractCegarLoop]: === Iteration 851 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:49,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:49,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1139442972, now seen corresponding path program 843 times [2020-01-16 19:10:49,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:49,987 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157175345] [2020-01-16 19:10:49,987 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:49,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:50,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:50,506 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157175345] [2020-01-16 19:10:50,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:50,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:50,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059284485] [2020-01-16 19:10:50,506 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:50,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:50,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:50,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:50,507 INFO L87 Difference]: Start difference. First operand 1571 states and 7061 transitions. Second operand 11 states. [2020-01-16 19:10:50,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:50,706 INFO L93 Difference]: Finished difference Result 2922 states and 11590 transitions. [2020-01-16 19:10:50,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:50,707 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:50,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:50,714 INFO L225 Difference]: With dead ends: 2922 [2020-01-16 19:10:50,714 INFO L226 Difference]: Without dead ends: 2907 [2020-01-16 19:10:50,715 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:50,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2907 states. [2020-01-16 19:10:50,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2907 to 1577. [2020-01-16 19:10:50,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 19:10:50,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7072 transitions. [2020-01-16 19:10:50,783 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7072 transitions. Word has length 28 [2020-01-16 19:10:50,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:50,783 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7072 transitions. [2020-01-16 19:10:50,783 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:50,783 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7072 transitions. [2020-01-16 19:10:50,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:50,785 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:50,785 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:50,785 INFO L426 AbstractCegarLoop]: === Iteration 852 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:50,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:50,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1666119328, now seen corresponding path program 844 times [2020-01-16 19:10:50,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:50,786 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009470920] [2020-01-16 19:10:50,786 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:50,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:51,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:51,317 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009470920] [2020-01-16 19:10:51,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:51,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:51,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528076824] [2020-01-16 19:10:51,317 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:51,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:51,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:51,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:51,318 INFO L87 Difference]: Start difference. First operand 1577 states and 7072 transitions. Second operand 11 states. [2020-01-16 19:10:51,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:51,468 INFO L93 Difference]: Finished difference Result 2927 states and 11594 transitions. [2020-01-16 19:10:51,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:51,469 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:51,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:51,476 INFO L225 Difference]: With dead ends: 2927 [2020-01-16 19:10:51,476 INFO L226 Difference]: Without dead ends: 2901 [2020-01-16 19:10:51,476 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:51,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2901 states. [2020-01-16 19:10:51,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2901 to 1571. [2020-01-16 19:10:51,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:10:51,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7055 transitions. [2020-01-16 19:10:51,542 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7055 transitions. Word has length 28 [2020-01-16 19:10:51,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:51,542 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7055 transitions. [2020-01-16 19:10:51,542 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:51,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7055 transitions. [2020-01-16 19:10:51,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:51,544 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:51,544 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:51,544 INFO L426 AbstractCegarLoop]: === Iteration 853 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:51,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:51,545 INFO L82 PathProgramCache]: Analyzing trace with hash -799880868, now seen corresponding path program 845 times [2020-01-16 19:10:51,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:51,545 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394389723] [2020-01-16 19:10:51,545 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:51,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:52,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:52,071 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394389723] [2020-01-16 19:10:52,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:52,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:52,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225114464] [2020-01-16 19:10:52,071 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:52,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:52,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:52,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:52,072 INFO L87 Difference]: Start difference. First operand 1571 states and 7055 transitions. Second operand 11 states. [2020-01-16 19:10:52,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:52,247 INFO L93 Difference]: Finished difference Result 2925 states and 11591 transitions. [2020-01-16 19:10:52,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:52,248 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:52,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:52,256 INFO L225 Difference]: With dead ends: 2925 [2020-01-16 19:10:52,256 INFO L226 Difference]: Without dead ends: 2909 [2020-01-16 19:10:52,256 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:52,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2909 states. [2020-01-16 19:10:52,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2909 to 1578. [2020-01-16 19:10:52,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 19:10:52,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7068 transitions. [2020-01-16 19:10:52,322 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7068 transitions. Word has length 28 [2020-01-16 19:10:52,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:52,323 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7068 transitions. [2020-01-16 19:10:52,323 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:52,323 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7068 transitions. [2020-01-16 19:10:52,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:52,325 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:52,325 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:52,325 INFO L426 AbstractCegarLoop]: === Iteration 854 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:52,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:52,325 INFO L82 PathProgramCache]: Analyzing trace with hash -55178370, now seen corresponding path program 846 times [2020-01-16 19:10:52,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:52,326 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962360462] [2020-01-16 19:10:52,326 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:52,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:52,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:52,881 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962360462] [2020-01-16 19:10:52,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:52,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:52,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945402619] [2020-01-16 19:10:52,882 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:52,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:52,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:52,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:52,882 INFO L87 Difference]: Start difference. First operand 1578 states and 7068 transitions. Second operand 11 states. [2020-01-16 19:10:53,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:53,026 INFO L93 Difference]: Finished difference Result 2929 states and 11592 transitions. [2020-01-16 19:10:53,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:53,026 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:53,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:53,033 INFO L225 Difference]: With dead ends: 2929 [2020-01-16 19:10:53,034 INFO L226 Difference]: Without dead ends: 2896 [2020-01-16 19:10:53,034 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:53,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2896 states. [2020-01-16 19:10:53,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2896 to 1565. [2020-01-16 19:10:53,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 19:10:53,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7038 transitions. [2020-01-16 19:10:53,099 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7038 transitions. Word has length 28 [2020-01-16 19:10:53,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:53,099 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7038 transitions. [2020-01-16 19:10:53,099 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:53,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7038 transitions. [2020-01-16 19:10:53,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:53,102 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:53,102 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:53,102 INFO L426 AbstractCegarLoop]: === Iteration 855 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:53,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:53,102 INFO L82 PathProgramCache]: Analyzing trace with hash 248514488, now seen corresponding path program 847 times [2020-01-16 19:10:53,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:53,102 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864330839] [2020-01-16 19:10:53,102 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:53,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:53,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:53,614 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864330839] [2020-01-16 19:10:53,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:53,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:53,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393449718] [2020-01-16 19:10:53,615 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:53,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:53,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:53,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:53,615 INFO L87 Difference]: Start difference. First operand 1565 states and 7038 transitions. Second operand 11 states. [2020-01-16 19:10:53,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:53,799 INFO L93 Difference]: Finished difference Result 2912 states and 11570 transitions. [2020-01-16 19:10:53,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:53,799 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:53,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:53,806 INFO L225 Difference]: With dead ends: 2912 [2020-01-16 19:10:53,807 INFO L226 Difference]: Without dead ends: 2897 [2020-01-16 19:10:53,807 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:53,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2897 states. [2020-01-16 19:10:53,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2897 to 1575. [2020-01-16 19:10:53,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:10:53,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7066 transitions. [2020-01-16 19:10:53,873 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7066 transitions. Word has length 28 [2020-01-16 19:10:53,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:53,874 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7066 transitions. [2020-01-16 19:10:53,874 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:53,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7066 transitions. [2020-01-16 19:10:53,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:53,876 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:53,876 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:53,876 INFO L426 AbstractCegarLoop]: === Iteration 856 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:53,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:53,876 INFO L82 PathProgramCache]: Analyzing trace with hash 993216986, now seen corresponding path program 848 times [2020-01-16 19:10:53,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:53,876 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548382542] [2020-01-16 19:10:53,876 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:53,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:54,396 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 19:10:54,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:54,403 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548382542] [2020-01-16 19:10:54,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:54,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:54,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865479387] [2020-01-16 19:10:54,404 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:54,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:54,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:54,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:54,404 INFO L87 Difference]: Start difference. First operand 1575 states and 7066 transitions. Second operand 11 states. [2020-01-16 19:10:54,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:54,620 INFO L93 Difference]: Finished difference Result 2913 states and 11567 transitions. [2020-01-16 19:10:54,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:54,620 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:54,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:54,627 INFO L225 Difference]: With dead ends: 2913 [2020-01-16 19:10:54,627 INFO L226 Difference]: Without dead ends: 2892 [2020-01-16 19:10:54,627 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:54,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2892 states. [2020-01-16 19:10:54,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2892 to 1570. [2020-01-16 19:10:54,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 19:10:54,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7052 transitions. [2020-01-16 19:10:54,693 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7052 transitions. Word has length 28 [2020-01-16 19:10:54,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:54,693 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7052 transitions. [2020-01-16 19:10:54,693 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:54,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7052 transitions. [2020-01-16 19:10:54,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:54,696 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:54,696 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:54,696 INFO L426 AbstractCegarLoop]: === Iteration 857 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:54,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:54,696 INFO L82 PathProgramCache]: Analyzing trace with hash -824570892, now seen corresponding path program 849 times [2020-01-16 19:10:54,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:54,696 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774563037] [2020-01-16 19:10:54,696 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:54,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:55,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:55,240 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774563037] [2020-01-16 19:10:55,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:55,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:55,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919256332] [2020-01-16 19:10:55,241 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:55,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:55,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:55,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:55,241 INFO L87 Difference]: Start difference. First operand 1570 states and 7052 transitions. Second operand 11 states. [2020-01-16 19:10:55,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:55,503 INFO L93 Difference]: Finished difference Result 2914 states and 11569 transitions. [2020-01-16 19:10:55,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:55,504 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:55,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:55,511 INFO L225 Difference]: With dead ends: 2914 [2020-01-16 19:10:55,511 INFO L226 Difference]: Without dead ends: 2899 [2020-01-16 19:10:55,511 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:55,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-01-16 19:10:55,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1575. [2020-01-16 19:10:55,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:10:55,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7061 transitions. [2020-01-16 19:10:55,577 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7061 transitions. Word has length 28 [2020-01-16 19:10:55,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:55,578 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7061 transitions. [2020-01-16 19:10:55,578 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:55,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7061 transitions. [2020-01-16 19:10:55,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:55,580 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:55,580 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:55,580 INFO L426 AbstractCegarLoop]: === Iteration 858 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:55,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:55,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1409536602, now seen corresponding path program 850 times [2020-01-16 19:10:55,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:55,581 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748327180] [2020-01-16 19:10:55,581 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:55,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:56,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:56,098 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748327180] [2020-01-16 19:10:56,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:56,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:56,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612851410] [2020-01-16 19:10:56,099 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:56,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:56,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:56,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:56,099 INFO L87 Difference]: Start difference. First operand 1575 states and 7061 transitions. Second operand 11 states. [2020-01-16 19:10:56,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:56,299 INFO L93 Difference]: Finished difference Result 2917 states and 11570 transitions. [2020-01-16 19:10:56,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:56,299 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:56,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:56,306 INFO L225 Difference]: With dead ends: 2917 [2020-01-16 19:10:56,306 INFO L226 Difference]: Without dead ends: 2894 [2020-01-16 19:10:56,306 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:56,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2020-01-16 19:10:56,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 1570. [2020-01-16 19:10:56,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 19:10:56,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7047 transitions. [2020-01-16 19:10:56,373 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7047 transitions. Word has length 28 [2020-01-16 19:10:56,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:56,373 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7047 transitions. [2020-01-16 19:10:56,373 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:56,373 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7047 transitions. [2020-01-16 19:10:56,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:56,375 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:56,376 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:56,376 INFO L426 AbstractCegarLoop]: === Iteration 859 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:56,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:56,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1531072564, now seen corresponding path program 851 times [2020-01-16 19:10:56,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:56,376 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238263911] [2020-01-16 19:10:56,376 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:56,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:56,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:56,889 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238263911] [2020-01-16 19:10:56,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:56,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:56,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464865181] [2020-01-16 19:10:56,890 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:56,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:56,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:56,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:56,890 INFO L87 Difference]: Start difference. First operand 1570 states and 7047 transitions. Second operand 11 states. [2020-01-16 19:10:57,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:57,099 INFO L93 Difference]: Finished difference Result 2917 states and 11571 transitions. [2020-01-16 19:10:57,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:57,100 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:57,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:57,107 INFO L225 Difference]: With dead ends: 2917 [2020-01-16 19:10:57,107 INFO L226 Difference]: Without dead ends: 2901 [2020-01-16 19:10:57,108 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:57,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2901 states. [2020-01-16 19:10:57,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2901 to 1576. [2020-01-16 19:10:57,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 19:10:57,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7058 transitions. [2020-01-16 19:10:57,173 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7058 transitions. Word has length 28 [2020-01-16 19:10:57,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:57,173 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7058 transitions. [2020-01-16 19:10:57,173 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:57,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7058 transitions. [2020-01-16 19:10:57,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:57,176 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:57,176 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:57,176 INFO L426 AbstractCegarLoop]: === Iteration 860 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:57,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:57,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1274489736, now seen corresponding path program 852 times [2020-01-16 19:10:57,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:57,176 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346185563] [2020-01-16 19:10:57,176 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:57,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:57,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:57,691 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346185563] [2020-01-16 19:10:57,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:57,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:57,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370663860] [2020-01-16 19:10:57,691 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:57,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:57,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:57,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:57,691 INFO L87 Difference]: Start difference. First operand 1576 states and 7058 transitions. Second operand 11 states. [2020-01-16 19:10:57,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:57,892 INFO L93 Difference]: Finished difference Result 2919 states and 11569 transitions. [2020-01-16 19:10:57,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:57,893 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:57,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:57,900 INFO L225 Difference]: With dead ends: 2919 [2020-01-16 19:10:57,900 INFO L226 Difference]: Without dead ends: 2890 [2020-01-16 19:10:57,900 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:57,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2890 states. [2020-01-16 19:10:57,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2890 to 1565. [2020-01-16 19:10:57,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 19:10:57,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7033 transitions. [2020-01-16 19:10:57,965 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7033 transitions. Word has length 28 [2020-01-16 19:10:57,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:57,966 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7033 transitions. [2020-01-16 19:10:57,966 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:57,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7033 transitions. [2020-01-16 19:10:57,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:57,968 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:57,968 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:57,968 INFO L426 AbstractCegarLoop]: === Iteration 861 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:57,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:57,968 INFO L82 PathProgramCache]: Analyzing trace with hash 259017592, now seen corresponding path program 853 times [2020-01-16 19:10:57,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:57,968 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139496062] [2020-01-16 19:10:57,969 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:57,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:58,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:58,485 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139496062] [2020-01-16 19:10:58,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:58,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:58,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92577292] [2020-01-16 19:10:58,485 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:58,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:58,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:58,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:58,486 INFO L87 Difference]: Start difference. First operand 1565 states and 7033 transitions. Second operand 11 states. [2020-01-16 19:10:58,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:58,697 INFO L93 Difference]: Finished difference Result 2928 states and 11597 transitions. [2020-01-16 19:10:58,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:58,697 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:58,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:58,704 INFO L225 Difference]: With dead ends: 2928 [2020-01-16 19:10:58,704 INFO L226 Difference]: Without dead ends: 2913 [2020-01-16 19:10:58,704 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:58,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2913 states. [2020-01-16 19:10:58,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2913 to 1578. [2020-01-16 19:10:58,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 19:10:58,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7068 transitions. [2020-01-16 19:10:58,770 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7068 transitions. Word has length 28 [2020-01-16 19:10:58,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:58,770 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7068 transitions. [2020-01-16 19:10:58,770 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:58,770 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7068 transitions. [2020-01-16 19:10:58,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:58,773 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:58,773 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:58,773 INFO L426 AbstractCegarLoop]: === Iteration 862 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:58,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:58,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1748422588, now seen corresponding path program 854 times [2020-01-16 19:10:58,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:58,773 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430333815] [2020-01-16 19:10:58,773 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:58,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:10:59,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:10:59,304 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430333815] [2020-01-16 19:10:59,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:10:59,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:10:59,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595310068] [2020-01-16 19:10:59,305 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:10:59,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:10:59,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:10:59,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:10:59,305 INFO L87 Difference]: Start difference. First operand 1578 states and 7068 transitions. Second operand 11 states. [2020-01-16 19:10:59,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:10:59,468 INFO L93 Difference]: Finished difference Result 2933 states and 11601 transitions. [2020-01-16 19:10:59,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:10:59,469 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:10:59,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:10:59,476 INFO L225 Difference]: With dead ends: 2933 [2020-01-16 19:10:59,476 INFO L226 Difference]: Without dead ends: 2907 [2020-01-16 19:10:59,476 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:10:59,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2907 states. [2020-01-16 19:10:59,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2907 to 1572. [2020-01-16 19:10:59,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 19:10:59,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7051 transitions. [2020-01-16 19:10:59,542 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7051 transitions. Word has length 28 [2020-01-16 19:10:59,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:10:59,542 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7051 transitions. [2020-01-16 19:10:59,542 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:10:59,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7051 transitions. [2020-01-16 19:10:59,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:10:59,544 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:10:59,544 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:10:59,544 INFO L426 AbstractCegarLoop]: === Iteration 863 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:10:59,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:10:59,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1869958550, now seen corresponding path program 855 times [2020-01-16 19:10:59,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:10:59,545 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547088893] [2020-01-16 19:10:59,545 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:10:59,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:00,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:00,052 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547088893] [2020-01-16 19:11:00,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:00,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:00,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978063243] [2020-01-16 19:11:00,053 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:00,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:00,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:00,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:00,053 INFO L87 Difference]: Start difference. First operand 1572 states and 7051 transitions. Second operand 11 states. [2020-01-16 19:11:00,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:00,274 INFO L93 Difference]: Finished difference Result 2925 states and 11586 transitions. [2020-01-16 19:11:00,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:00,275 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:00,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:00,282 INFO L225 Difference]: With dead ends: 2925 [2020-01-16 19:11:00,282 INFO L226 Difference]: Without dead ends: 2910 [2020-01-16 19:11:00,283 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:00,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2910 states. [2020-01-16 19:11:00,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2910 to 1577. [2020-01-16 19:11:00,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 19:11:00,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7060 transitions. [2020-01-16 19:11:00,348 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7060 transitions. Word has length 28 [2020-01-16 19:11:00,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:00,348 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7060 transitions. [2020-01-16 19:11:00,348 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:00,348 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7060 transitions. [2020-01-16 19:11:00,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:00,351 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:00,351 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:00,351 INFO L426 AbstractCegarLoop]: === Iteration 864 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:00,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:00,351 INFO L82 PathProgramCache]: Analyzing trace with hash -190901252, now seen corresponding path program 856 times [2020-01-16 19:11:00,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:00,351 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080424422] [2020-01-16 19:11:00,351 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:00,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:00,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:00,864 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080424422] [2020-01-16 19:11:00,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:00,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:00,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225120282] [2020-01-16 19:11:00,864 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:00,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:00,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:00,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:00,865 INFO L87 Difference]: Start difference. First operand 1577 states and 7060 transitions. Second operand 11 states. [2020-01-16 19:11:01,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:01,057 INFO L93 Difference]: Finished difference Result 2928 states and 11587 transitions. [2020-01-16 19:11:01,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:01,057 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:01,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:01,064 INFO L225 Difference]: With dead ends: 2928 [2020-01-16 19:11:01,065 INFO L226 Difference]: Without dead ends: 2905 [2020-01-16 19:11:01,065 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:01,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2905 states. [2020-01-16 19:11:01,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2905 to 1572. [2020-01-16 19:11:01,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 19:11:01,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7046 transitions. [2020-01-16 19:11:01,158 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7046 transitions. Word has length 28 [2020-01-16 19:11:01,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:01,158 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7046 transitions. [2020-01-16 19:11:01,158 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:01,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7046 transitions. [2020-01-16 19:11:01,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:01,161 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:01,161 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:01,161 INFO L426 AbstractCegarLoop]: === Iteration 865 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:01,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:01,161 INFO L82 PathProgramCache]: Analyzing trace with hash -2008689130, now seen corresponding path program 857 times [2020-01-16 19:11:01,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:01,161 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138313786] [2020-01-16 19:11:01,161 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:01,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:01,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:01,691 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138313786] [2020-01-16 19:11:01,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:01,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:01,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900289242] [2020-01-16 19:11:01,691 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:01,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:01,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:01,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:01,692 INFO L87 Difference]: Start difference. First operand 1572 states and 7046 transitions. Second operand 11 states. [2020-01-16 19:11:01,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:01,900 INFO L93 Difference]: Finished difference Result 2940 states and 11611 transitions. [2020-01-16 19:11:01,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:01,900 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:01,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:01,907 INFO L225 Difference]: With dead ends: 2940 [2020-01-16 19:11:01,907 INFO L226 Difference]: Without dead ends: 2920 [2020-01-16 19:11:01,907 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:01,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2920 states. [2020-01-16 19:11:01,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2920 to 1582. [2020-01-16 19:11:01,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 19:11:01,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7063 transitions. [2020-01-16 19:11:01,973 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7063 transitions. Word has length 28 [2020-01-16 19:11:01,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:01,973 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7063 transitions. [2020-01-16 19:11:01,973 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:01,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7063 transitions. [2020-01-16 19:11:01,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:01,975 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:01,975 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:01,975 INFO L426 AbstractCegarLoop]: === Iteration 866 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:01,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:01,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1263986632, now seen corresponding path program 858 times [2020-01-16 19:11:01,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:01,976 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357358142] [2020-01-16 19:11:01,976 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:01,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:02,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:02,505 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357358142] [2020-01-16 19:11:02,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:02,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:02,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361103313] [2020-01-16 19:11:02,505 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:02,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:02,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:02,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:02,506 INFO L87 Difference]: Start difference. First operand 1582 states and 7063 transitions. Second operand 11 states. [2020-01-16 19:11:02,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:02,707 INFO L93 Difference]: Finished difference Result 2938 states and 11599 transitions. [2020-01-16 19:11:02,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:02,707 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:02,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:02,714 INFO L225 Difference]: With dead ends: 2938 [2020-01-16 19:11:02,714 INFO L226 Difference]: Without dead ends: 2903 [2020-01-16 19:11:02,714 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:02,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2903 states. [2020-01-16 19:11:02,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2903 to 1565. [2020-01-16 19:11:02,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 19:11:02,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7026 transitions. [2020-01-16 19:11:02,780 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7026 transitions. Word has length 28 [2020-01-16 19:11:02,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:02,780 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7026 transitions. [2020-01-16 19:11:02,780 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:02,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7026 transitions. [2020-01-16 19:11:02,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:02,782 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:02,782 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:02,783 INFO L426 AbstractCegarLoop]: === Iteration 867 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:02,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:02,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1014223194, now seen corresponding path program 859 times [2020-01-16 19:11:02,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:02,783 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746949991] [2020-01-16 19:11:02,783 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:02,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:03,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:03,306 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746949991] [2020-01-16 19:11:03,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:03,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:03,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157135974] [2020-01-16 19:11:03,306 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:03,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:03,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:03,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:03,307 INFO L87 Difference]: Start difference. First operand 1565 states and 7026 transitions. Second operand 11 states. [2020-01-16 19:11:03,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:03,499 INFO L93 Difference]: Finished difference Result 2935 states and 11609 transitions. [2020-01-16 19:11:03,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:03,499 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:03,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:03,507 INFO L225 Difference]: With dead ends: 2935 [2020-01-16 19:11:03,507 INFO L226 Difference]: Without dead ends: 2919 [2020-01-16 19:11:03,507 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:03,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2919 states. [2020-01-16 19:11:03,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2919 to 1580. [2020-01-16 19:11:03,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 19:11:03,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7067 transitions. [2020-01-16 19:11:03,573 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7067 transitions. Word has length 28 [2020-01-16 19:11:03,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:03,573 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7067 transitions. [2020-01-16 19:11:03,573 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:03,573 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7067 transitions. [2020-01-16 19:11:03,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:03,575 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:03,575 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:03,575 INFO L426 AbstractCegarLoop]: === Iteration 868 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:03,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:03,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1758925692, now seen corresponding path program 860 times [2020-01-16 19:11:03,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:03,576 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972033295] [2020-01-16 19:11:03,576 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:03,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:04,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:04,122 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972033295] [2020-01-16 19:11:04,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:04,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:04,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134413732] [2020-01-16 19:11:04,122 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:04,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:04,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:04,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:04,123 INFO L87 Difference]: Start difference. First operand 1580 states and 7067 transitions. Second operand 11 states. [2020-01-16 19:11:04,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:04,269 INFO L93 Difference]: Finished difference Result 2939 states and 11610 transitions. [2020-01-16 19:11:04,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:04,269 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:04,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:04,276 INFO L225 Difference]: With dead ends: 2939 [2020-01-16 19:11:04,277 INFO L226 Difference]: Without dead ends: 2912 [2020-01-16 19:11:04,277 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:04,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2912 states. [2020-01-16 19:11:04,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2912 to 1573. [2020-01-16 19:11:04,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:11:04,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7047 transitions. [2020-01-16 19:11:04,343 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7047 transitions. Word has length 28 [2020-01-16 19:11:04,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:04,343 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7047 transitions. [2020-01-16 19:11:04,343 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:04,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7047 transitions. [2020-01-16 19:11:04,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:04,345 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:04,345 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:04,345 INFO L426 AbstractCegarLoop]: === Iteration 869 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:04,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:04,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1669803144, now seen corresponding path program 861 times [2020-01-16 19:11:04,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:04,346 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625664588] [2020-01-16 19:11:04,346 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:04,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:04,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:04,874 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625664588] [2020-01-16 19:11:04,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:04,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:04,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53281825] [2020-01-16 19:11:04,874 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:04,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:04,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:04,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:04,875 INFO L87 Difference]: Start difference. First operand 1573 states and 7047 transitions. Second operand 11 states. [2020-01-16 19:11:05,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:05,074 INFO L93 Difference]: Finished difference Result 2932 states and 11597 transitions. [2020-01-16 19:11:05,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:05,075 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:05,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:05,081 INFO L225 Difference]: With dead ends: 2932 [2020-01-16 19:11:05,082 INFO L226 Difference]: Without dead ends: 2916 [2020-01-16 19:11:05,082 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:05,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2020-01-16 19:11:05,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 1579. [2020-01-16 19:11:05,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 19:11:05,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7058 transitions. [2020-01-16 19:11:05,149 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7058 transitions. Word has length 28 [2020-01-16 19:11:05,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:05,149 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7058 transitions. [2020-01-16 19:11:05,149 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:05,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7058 transitions. [2020-01-16 19:11:05,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:05,152 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:05,152 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:05,152 INFO L426 AbstractCegarLoop]: === Iteration 870 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:05,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:05,152 INFO L82 PathProgramCache]: Analyzing trace with hash -180398148, now seen corresponding path program 862 times [2020-01-16 19:11:05,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:05,152 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883600891] [2020-01-16 19:11:05,152 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:05,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:05,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:05,675 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883600891] [2020-01-16 19:11:05,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:05,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:05,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874654816] [2020-01-16 19:11:05,675 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:05,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:05,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:05,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:05,675 INFO L87 Difference]: Start difference. First operand 1579 states and 7058 transitions. Second operand 11 states. [2020-01-16 19:11:05,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:05,859 INFO L93 Difference]: Finished difference Result 2934 states and 11595 transitions. [2020-01-16 19:11:05,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:05,859 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:05,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:05,866 INFO L225 Difference]: With dead ends: 2934 [2020-01-16 19:11:05,866 INFO L226 Difference]: Without dead ends: 2910 [2020-01-16 19:11:05,866 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:05,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2910 states. [2020-01-16 19:11:05,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2910 to 1573. [2020-01-16 19:11:05,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:11:05,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7041 transitions. [2020-01-16 19:11:05,934 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7041 transitions. Word has length 28 [2020-01-16 19:11:05,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:05,934 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7041 transitions. [2020-01-16 19:11:05,934 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:05,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7041 transitions. [2020-01-16 19:11:05,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:05,936 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:05,936 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:05,936 INFO L426 AbstractCegarLoop]: === Iteration 871 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:05,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:05,936 INFO L82 PathProgramCache]: Analyzing trace with hash 685840312, now seen corresponding path program 863 times [2020-01-16 19:11:05,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:05,937 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824503572] [2020-01-16 19:11:05,937 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:05,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:06,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:06,480 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824503572] [2020-01-16 19:11:06,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:06,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:06,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047960996] [2020-01-16 19:11:06,481 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:06,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:06,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:06,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:06,481 INFO L87 Difference]: Start difference. First operand 1573 states and 7041 transitions. Second operand 11 states. [2020-01-16 19:11:06,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:06,621 INFO L93 Difference]: Finished difference Result 2944 states and 11614 transitions. [2020-01-16 19:11:06,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:06,622 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:06,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:06,629 INFO L225 Difference]: With dead ends: 2944 [2020-01-16 19:11:06,630 INFO L226 Difference]: Without dead ends: 2924 [2020-01-16 19:11:06,630 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:06,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2924 states. [2020-01-16 19:11:06,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2924 to 1583. [2020-01-16 19:11:06,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 19:11:06,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7058 transitions. [2020-01-16 19:11:06,696 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7058 transitions. Word has length 28 [2020-01-16 19:11:06,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:06,696 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7058 transitions. [2020-01-16 19:11:06,696 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:06,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7058 transitions. [2020-01-16 19:11:06,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:06,698 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:06,698 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:06,698 INFO L426 AbstractCegarLoop]: === Iteration 872 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:06,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:06,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1430542810, now seen corresponding path program 864 times [2020-01-16 19:11:06,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:06,699 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663378387] [2020-01-16 19:11:06,699 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:06,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:07,236 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 19:11:07,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:07,243 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663378387] [2020-01-16 19:11:07,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:07,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:07,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271151719] [2020-01-16 19:11:07,244 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:07,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:07,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:07,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:07,244 INFO L87 Difference]: Start difference. First operand 1583 states and 7058 transitions. Second operand 11 states. [2020-01-16 19:11:07,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:07,493 INFO L93 Difference]: Finished difference Result 2942 states and 11602 transitions. [2020-01-16 19:11:07,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:07,493 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:07,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:07,500 INFO L225 Difference]: With dead ends: 2942 [2020-01-16 19:11:07,500 INFO L226 Difference]: Without dead ends: 2899 [2020-01-16 19:11:07,500 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:07,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-01-16 19:11:07,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1558. [2020-01-16 19:11:07,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1558 states. [2020-01-16 19:11:07,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 7008 transitions. [2020-01-16 19:11:07,567 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 7008 transitions. Word has length 28 [2020-01-16 19:11:07,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:07,567 INFO L478 AbstractCegarLoop]: Abstraction has 1558 states and 7008 transitions. [2020-01-16 19:11:07,567 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:07,567 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 7008 transitions. [2020-01-16 19:11:07,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:07,570 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:07,570 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:07,570 INFO L426 AbstractCegarLoop]: === Iteration 873 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:07,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:07,570 INFO L82 PathProgramCache]: Analyzing trace with hash -556215610, now seen corresponding path program 865 times [2020-01-16 19:11:07,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:07,570 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695015488] [2020-01-16 19:11:07,570 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:07,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:08,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:08,105 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695015488] [2020-01-16 19:11:08,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:08,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:08,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535564378] [2020-01-16 19:11:08,106 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:08,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:08,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:08,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:08,106 INFO L87 Difference]: Start difference. First operand 1558 states and 7008 transitions. Second operand 11 states. [2020-01-16 19:11:08,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:08,275 INFO L93 Difference]: Finished difference Result 2889 states and 11495 transitions. [2020-01-16 19:11:08,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:08,275 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:08,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:08,282 INFO L225 Difference]: With dead ends: 2889 [2020-01-16 19:11:08,282 INFO L226 Difference]: Without dead ends: 2874 [2020-01-16 19:11:08,282 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:08,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2874 states. [2020-01-16 19:11:08,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2874 to 1573. [2020-01-16 19:11:08,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:11:08,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7057 transitions. [2020-01-16 19:11:08,349 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7057 transitions. Word has length 28 [2020-01-16 19:11:08,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:08,349 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7057 transitions. [2020-01-16 19:11:08,349 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:08,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7057 transitions. [2020-01-16 19:11:08,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:08,351 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:08,351 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:08,352 INFO L426 AbstractCegarLoop]: === Iteration 874 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:08,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:08,352 INFO L82 PathProgramCache]: Analyzing trace with hash 188486888, now seen corresponding path program 866 times [2020-01-16 19:11:08,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:08,352 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684774467] [2020-01-16 19:11:08,352 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:08,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:08,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:08,869 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684774467] [2020-01-16 19:11:08,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:08,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:08,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243894394] [2020-01-16 19:11:08,869 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:08,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:08,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:08,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:08,869 INFO L87 Difference]: Start difference. First operand 1573 states and 7057 transitions. Second operand 11 states. [2020-01-16 19:11:09,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:09,039 INFO L93 Difference]: Finished difference Result 2890 states and 11492 transitions. [2020-01-16 19:11:09,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:09,039 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:09,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:09,046 INFO L225 Difference]: With dead ends: 2890 [2020-01-16 19:11:09,046 INFO L226 Difference]: Without dead ends: 2869 [2020-01-16 19:11:09,046 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:09,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2869 states. [2020-01-16 19:11:09,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2869 to 1568. [2020-01-16 19:11:09,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 19:11:09,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7043 transitions. [2020-01-16 19:11:09,112 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7043 transitions. Word has length 28 [2020-01-16 19:11:09,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:09,113 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7043 transitions. [2020-01-16 19:11:09,113 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:09,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7043 transitions. [2020-01-16 19:11:09,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:09,116 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:09,116 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:09,116 INFO L426 AbstractCegarLoop]: === Iteration 875 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:09,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:09,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1054725348, now seen corresponding path program 867 times [2020-01-16 19:11:09,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:09,117 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181459037] [2020-01-16 19:11:09,117 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:09,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:09,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:09,632 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181459037] [2020-01-16 19:11:09,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:09,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:09,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612726066] [2020-01-16 19:11:09,632 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:09,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:09,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:09,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:09,633 INFO L87 Difference]: Start difference. First operand 1568 states and 7043 transitions. Second operand 11 states. [2020-01-16 19:11:09,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:09,817 INFO L93 Difference]: Finished difference Result 2894 states and 11499 transitions. [2020-01-16 19:11:09,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:09,817 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:09,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:09,824 INFO L225 Difference]: With dead ends: 2894 [2020-01-16 19:11:09,825 INFO L226 Difference]: Without dead ends: 2879 [2020-01-16 19:11:09,825 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:09,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2879 states. [2020-01-16 19:11:09,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2879 to 1574. [2020-01-16 19:11:09,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 19:11:09,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7054 transitions. [2020-01-16 19:11:09,892 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7054 transitions. Word has length 28 [2020-01-16 19:11:09,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:09,892 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7054 transitions. [2020-01-16 19:11:09,892 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:09,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7054 transitions. [2020-01-16 19:11:09,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:09,894 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:09,895 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:09,895 INFO L426 AbstractCegarLoop]: === Iteration 876 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:09,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:09,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1750836952, now seen corresponding path program 868 times [2020-01-16 19:11:09,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:09,895 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395730938] [2020-01-16 19:11:09,895 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:09,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:10,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:10,415 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395730938] [2020-01-16 19:11:10,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:10,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:10,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7284839] [2020-01-16 19:11:10,415 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:10,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:10,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:10,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:10,416 INFO L87 Difference]: Start difference. First operand 1574 states and 7054 transitions. Second operand 11 states. [2020-01-16 19:11:10,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:10,555 INFO L93 Difference]: Finished difference Result 2899 states and 11503 transitions. [2020-01-16 19:11:10,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:10,556 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:10,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:10,562 INFO L225 Difference]: With dead ends: 2899 [2020-01-16 19:11:10,563 INFO L226 Difference]: Without dead ends: 2873 [2020-01-16 19:11:10,563 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:10,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2873 states. [2020-01-16 19:11:10,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2873 to 1568. [2020-01-16 19:11:10,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 19:11:10,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7037 transitions. [2020-01-16 19:11:10,630 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7037 transitions. Word has length 28 [2020-01-16 19:11:10,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:10,630 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7037 transitions. [2020-01-16 19:11:10,630 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:10,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7037 transitions. [2020-01-16 19:11:10,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:10,632 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:10,632 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:10,633 INFO L426 AbstractCegarLoop]: === Iteration 877 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:10,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:10,633 INFO L82 PathProgramCache]: Analyzing trace with hash -884598492, now seen corresponding path program 869 times [2020-01-16 19:11:10,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:10,633 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177996405] [2020-01-16 19:11:10,633 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:10,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:11,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:11,155 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177996405] [2020-01-16 19:11:11,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:11,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:11,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304326967] [2020-01-16 19:11:11,155 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:11,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:11,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:11,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:11,156 INFO L87 Difference]: Start difference. First operand 1568 states and 7037 transitions. Second operand 11 states. [2020-01-16 19:11:11,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:11,327 INFO L93 Difference]: Finished difference Result 2897 states and 11500 transitions. [2020-01-16 19:11:11,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:11,327 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:11,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:11,334 INFO L225 Difference]: With dead ends: 2897 [2020-01-16 19:11:11,334 INFO L226 Difference]: Without dead ends: 2881 [2020-01-16 19:11:11,334 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:11,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2881 states. [2020-01-16 19:11:11,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2881 to 1575. [2020-01-16 19:11:11,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:11:11,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7050 transitions. [2020-01-16 19:11:11,400 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7050 transitions. Word has length 28 [2020-01-16 19:11:11,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:11,400 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7050 transitions. [2020-01-16 19:11:11,400 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:11,400 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7050 transitions. [2020-01-16 19:11:11,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:11,402 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:11,402 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:11,403 INFO L426 AbstractCegarLoop]: === Iteration 878 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:11,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:11,403 INFO L82 PathProgramCache]: Analyzing trace with hash -139895994, now seen corresponding path program 870 times [2020-01-16 19:11:11,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:11,403 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198303519] [2020-01-16 19:11:11,403 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:11,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:11,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:11,937 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198303519] [2020-01-16 19:11:11,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:11,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:11,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195997369] [2020-01-16 19:11:11,937 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:11,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:11,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:11,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:11,938 INFO L87 Difference]: Start difference. First operand 1575 states and 7050 transitions. Second operand 11 states. [2020-01-16 19:11:12,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:12,103 INFO L93 Difference]: Finished difference Result 2901 states and 11501 transitions. [2020-01-16 19:11:12,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:12,104 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:12,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:12,110 INFO L225 Difference]: With dead ends: 2901 [2020-01-16 19:11:12,110 INFO L226 Difference]: Without dead ends: 2868 [2020-01-16 19:11:12,110 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:12,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2868 states. [2020-01-16 19:11:12,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2868 to 1562. [2020-01-16 19:11:12,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1562 states. [2020-01-16 19:11:12,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1562 states to 1562 states and 7022 transitions. [2020-01-16 19:11:12,175 INFO L78 Accepts]: Start accepts. Automaton has 1562 states and 7022 transitions. Word has length 28 [2020-01-16 19:11:12,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:12,175 INFO L478 AbstractCegarLoop]: Abstraction has 1562 states and 7022 transitions. [2020-01-16 19:11:12,175 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:12,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1562 states and 7022 transitions. [2020-01-16 19:11:12,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:12,178 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:12,178 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:12,178 INFO L426 AbstractCegarLoop]: === Iteration 879 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:12,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:12,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1913959506, now seen corresponding path program 871 times [2020-01-16 19:11:12,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:12,178 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178937890] [2020-01-16 19:11:12,178 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:12,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:12,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:12,690 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178937890] [2020-01-16 19:11:12,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:12,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:12,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854366490] [2020-01-16 19:11:12,690 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:12,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:12,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:12,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:12,690 INFO L87 Difference]: Start difference. First operand 1562 states and 7022 transitions. Second operand 11 states. [2020-01-16 19:11:12,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:12,871 INFO L93 Difference]: Finished difference Result 2872 states and 11448 transitions. [2020-01-16 19:11:12,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:12,872 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:12,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:12,878 INFO L225 Difference]: With dead ends: 2872 [2020-01-16 19:11:12,879 INFO L226 Difference]: Without dead ends: 2857 [2020-01-16 19:11:12,879 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:12,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2857 states. [2020-01-16 19:11:12,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2857 to 1570. [2020-01-16 19:11:12,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 19:11:12,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7042 transitions. [2020-01-16 19:11:12,946 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7042 transitions. Word has length 28 [2020-01-16 19:11:12,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:12,947 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7042 transitions. [2020-01-16 19:11:12,947 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:12,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7042 transitions. [2020-01-16 19:11:12,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:12,949 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:12,949 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:12,949 INFO L426 AbstractCegarLoop]: === Iteration 880 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:12,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:12,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1636305292, now seen corresponding path program 872 times [2020-01-16 19:11:12,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:12,949 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476040094] [2020-01-16 19:11:12,949 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:12,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:13,450 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 19:11:13,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:13,486 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476040094] [2020-01-16 19:11:13,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:13,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:13,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729478178] [2020-01-16 19:11:13,487 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:13,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:13,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:13,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:13,487 INFO L87 Difference]: Start difference. First operand 1570 states and 7042 transitions. Second operand 11 states. [2020-01-16 19:11:13,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:13,720 INFO L93 Difference]: Finished difference Result 2873 states and 11445 transitions. [2020-01-16 19:11:13,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:13,720 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:13,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:13,729 INFO L225 Difference]: With dead ends: 2873 [2020-01-16 19:11:13,729 INFO L226 Difference]: Without dead ends: 2852 [2020-01-16 19:11:13,729 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:13,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2852 states. [2020-01-16 19:11:13,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2852 to 1565. [2020-01-16 19:11:13,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 19:11:13,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7030 transitions. [2020-01-16 19:11:13,796 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7030 transitions. Word has length 28 [2020-01-16 19:11:13,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:13,796 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7030 transitions. [2020-01-16 19:11:13,796 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:13,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7030 transitions. [2020-01-16 19:11:13,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:13,798 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:13,798 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:13,798 INFO L426 AbstractCegarLoop]: === Iteration 881 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:13,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:13,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1202891370, now seen corresponding path program 873 times [2020-01-16 19:11:13,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:13,799 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851838607] [2020-01-16 19:11:13,799 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:13,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:14,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:14,307 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851838607] [2020-01-16 19:11:14,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:14,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:14,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804080995] [2020-01-16 19:11:14,308 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:14,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:14,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:14,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:14,308 INFO L87 Difference]: Start difference. First operand 1565 states and 7030 transitions. Second operand 11 states. [2020-01-16 19:11:14,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:14,527 INFO L93 Difference]: Finished difference Result 2867 states and 11433 transitions. [2020-01-16 19:11:14,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:14,527 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:14,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:14,534 INFO L225 Difference]: With dead ends: 2867 [2020-01-16 19:11:14,534 INFO L226 Difference]: Without dead ends: 2852 [2020-01-16 19:11:14,535 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:14,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2852 states. [2020-01-16 19:11:14,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2852 to 1568. [2020-01-16 19:11:14,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 19:11:14,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7035 transitions. [2020-01-16 19:11:14,601 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7035 transitions. Word has length 28 [2020-01-16 19:11:14,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:14,601 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7035 transitions. [2020-01-16 19:11:14,601 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:14,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7035 transitions. [2020-01-16 19:11:14,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:14,603 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:14,603 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:14,603 INFO L426 AbstractCegarLoop]: === Iteration 882 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:14,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:14,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1744945170, now seen corresponding path program 874 times [2020-01-16 19:11:14,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:14,604 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694189923] [2020-01-16 19:11:14,604 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:14,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:15,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:15,109 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694189923] [2020-01-16 19:11:15,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:15,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:15,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251804703] [2020-01-16 19:11:15,110 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:15,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:15,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:15,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:15,110 INFO L87 Difference]: Start difference. First operand 1568 states and 7035 transitions. Second operand 11 states. [2020-01-16 19:11:15,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:15,342 INFO L93 Difference]: Finished difference Result 2865 states and 11426 transitions. [2020-01-16 19:11:15,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:15,342 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:15,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:15,349 INFO L225 Difference]: With dead ends: 2865 [2020-01-16 19:11:15,349 INFO L226 Difference]: Without dead ends: 2849 [2020-01-16 19:11:15,349 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:15,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2849 states. [2020-01-16 19:11:15,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2849 to 1565. [2020-01-16 19:11:15,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 19:11:15,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7027 transitions. [2020-01-16 19:11:15,415 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7027 transitions. Word has length 28 [2020-01-16 19:11:15,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:15,415 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7027 transitions. [2020-01-16 19:11:15,415 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:15,415 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7027 transitions. [2020-01-16 19:11:15,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:15,417 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:15,417 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:15,418 INFO L426 AbstractCegarLoop]: === Iteration 883 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:15,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:15,418 INFO L82 PathProgramCache]: Analyzing trace with hash -447685768, now seen corresponding path program 875 times [2020-01-16 19:11:15,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:15,418 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567311766] [2020-01-16 19:11:15,418 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:15,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:15,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:15,936 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567311766] [2020-01-16 19:11:15,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:15,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:15,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943459873] [2020-01-16 19:11:15,936 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:15,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:15,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:15,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:15,937 INFO L87 Difference]: Start difference. First operand 1565 states and 7027 transitions. Second operand 11 states. [2020-01-16 19:11:16,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:16,127 INFO L93 Difference]: Finished difference Result 2869 states and 11434 transitions. [2020-01-16 19:11:16,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:16,127 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:16,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:16,135 INFO L225 Difference]: With dead ends: 2869 [2020-01-16 19:11:16,135 INFO L226 Difference]: Without dead ends: 2853 [2020-01-16 19:11:16,135 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:16,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2853 states. [2020-01-16 19:11:16,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2853 to 1568. [2020-01-16 19:11:16,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 19:11:16,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7032 transitions. [2020-01-16 19:11:16,200 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7032 transitions. Word has length 28 [2020-01-16 19:11:16,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:16,201 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7032 transitions. [2020-01-16 19:11:16,201 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:16,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7032 transitions. [2020-01-16 19:11:16,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:16,203 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:16,203 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:16,203 INFO L426 AbstractCegarLoop]: === Iteration 884 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:16,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:16,203 INFO L82 PathProgramCache]: Analyzing trace with hash 144507316, now seen corresponding path program 876 times [2020-01-16 19:11:16,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:16,203 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918117915] [2020-01-16 19:11:16,204 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:16,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:16,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:16,706 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918117915] [2020-01-16 19:11:16,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:16,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:16,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975794798] [2020-01-16 19:11:16,706 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:16,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:16,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:16,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:16,707 INFO L87 Difference]: Start difference. First operand 1568 states and 7032 transitions. Second operand 11 states. [2020-01-16 19:11:16,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:16,915 INFO L93 Difference]: Finished difference Result 2866 states and 11425 transitions. [2020-01-16 19:11:16,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:16,915 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:16,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:16,922 INFO L225 Difference]: With dead ends: 2866 [2020-01-16 19:11:16,923 INFO L226 Difference]: Without dead ends: 2847 [2020-01-16 19:11:16,923 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:16,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2847 states. [2020-01-16 19:11:16,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2847 to 1562. [2020-01-16 19:11:16,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1562 states. [2020-01-16 19:11:16,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1562 states to 1562 states and 7019 transitions. [2020-01-16 19:11:16,988 INFO L78 Accepts]: Start accepts. Automaton has 1562 states and 7019 transitions. Word has length 28 [2020-01-16 19:11:16,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:16,988 INFO L478 AbstractCegarLoop]: Abstraction has 1562 states and 7019 transitions. [2020-01-16 19:11:16,988 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:16,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1562 states and 7019 transitions. [2020-01-16 19:11:16,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:16,991 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:16,991 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:16,991 INFO L426 AbstractCegarLoop]: === Iteration 885 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:16,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:16,991 INFO L82 PathProgramCache]: Analyzing trace with hash -444470608, now seen corresponding path program 877 times [2020-01-16 19:11:16,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:16,991 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738236670] [2020-01-16 19:11:16,991 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:16,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:17,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:17,494 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738236670] [2020-01-16 19:11:17,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:17,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:17,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376394930] [2020-01-16 19:11:17,495 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:17,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:17,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:17,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:17,495 INFO L87 Difference]: Start difference. First operand 1562 states and 7019 transitions. Second operand 11 states. [2020-01-16 19:11:17,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:17,733 INFO L93 Difference]: Finished difference Result 2884 states and 11468 transitions. [2020-01-16 19:11:17,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:17,734 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:17,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:17,741 INFO L225 Difference]: With dead ends: 2884 [2020-01-16 19:11:17,741 INFO L226 Difference]: Without dead ends: 2869 [2020-01-16 19:11:17,741 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:17,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2869 states. [2020-01-16 19:11:17,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2869 to 1572. [2020-01-16 19:11:17,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 19:11:17,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7044 transitions. [2020-01-16 19:11:17,807 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7044 transitions. Word has length 28 [2020-01-16 19:11:17,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:17,807 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7044 transitions. [2020-01-16 19:11:17,807 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:17,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7044 transitions. [2020-01-16 19:11:17,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:17,810 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:17,810 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:17,810 INFO L426 AbstractCegarLoop]: === Iteration 886 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:17,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:17,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1044934388, now seen corresponding path program 878 times [2020-01-16 19:11:17,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:17,810 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092048040] [2020-01-16 19:11:17,810 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:17,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:18,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:18,317 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092048040] [2020-01-16 19:11:18,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:18,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:18,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932508770] [2020-01-16 19:11:18,318 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:18,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:18,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:18,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:18,318 INFO L87 Difference]: Start difference. First operand 1572 states and 7044 transitions. Second operand 11 states. [2020-01-16 19:11:18,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:18,458 INFO L93 Difference]: Finished difference Result 2889 states and 11472 transitions. [2020-01-16 19:11:18,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:18,459 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:18,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:18,466 INFO L225 Difference]: With dead ends: 2889 [2020-01-16 19:11:18,466 INFO L226 Difference]: Without dead ends: 2863 [2020-01-16 19:11:18,467 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:18,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2863 states. [2020-01-16 19:11:18,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2863 to 1566. [2020-01-16 19:11:18,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1566 states. [2020-01-16 19:11:18,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 7029 transitions. [2020-01-16 19:11:18,532 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 7029 transitions. Word has length 28 [2020-01-16 19:11:18,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:18,533 INFO L478 AbstractCegarLoop]: Abstraction has 1566 states and 7029 transitions. [2020-01-16 19:11:18,533 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:18,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 7029 transitions. [2020-01-16 19:11:18,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:18,535 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:18,535 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:18,535 INFO L426 AbstractCegarLoop]: === Iteration 887 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:18,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:18,535 INFO L82 PathProgramCache]: Analyzing trace with hash 723142708, now seen corresponding path program 879 times [2020-01-16 19:11:18,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:18,535 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090162867] [2020-01-16 19:11:18,536 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:18,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:19,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:19,025 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090162867] [2020-01-16 19:11:19,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:19,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:19,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354420766] [2020-01-16 19:11:19,026 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:19,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:19,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:19,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:19,026 INFO L87 Difference]: Start difference. First operand 1566 states and 7029 transitions. Second operand 11 states. [2020-01-16 19:11:19,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:19,217 INFO L93 Difference]: Finished difference Result 2874 states and 11443 transitions. [2020-01-16 19:11:19,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:19,218 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:19,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:19,225 INFO L225 Difference]: With dead ends: 2874 [2020-01-16 19:11:19,225 INFO L226 Difference]: Without dead ends: 2859 [2020-01-16 19:11:19,225 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:19,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2859 states. [2020-01-16 19:11:19,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2859 to 1569. [2020-01-16 19:11:19,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 19:11:19,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7034 transitions. [2020-01-16 19:11:19,291 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7034 transitions. Word has length 28 [2020-01-16 19:11:19,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:19,291 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7034 transitions. [2020-01-16 19:11:19,291 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:19,291 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7034 transitions. [2020-01-16 19:11:19,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:19,294 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:19,294 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:19,294 INFO L426 AbstractCegarLoop]: === Iteration 888 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:19,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:19,294 INFO L82 PathProgramCache]: Analyzing trace with hash -623988048, now seen corresponding path program 880 times [2020-01-16 19:11:19,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:19,294 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744224671] [2020-01-16 19:11:19,294 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:19,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:19,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:19,822 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744224671] [2020-01-16 19:11:19,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:19,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:19,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469904576] [2020-01-16 19:11:19,822 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:19,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:19,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:19,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:19,823 INFO L87 Difference]: Start difference. First operand 1569 states and 7034 transitions. Second operand 11 states. [2020-01-16 19:11:20,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:20,063 INFO L93 Difference]: Finished difference Result 2872 states and 11436 transitions. [2020-01-16 19:11:20,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:20,064 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:20,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:20,071 INFO L225 Difference]: With dead ends: 2872 [2020-01-16 19:11:20,071 INFO L226 Difference]: Without dead ends: 2856 [2020-01-16 19:11:20,071 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:20,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2856 states. [2020-01-16 19:11:20,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2856 to 1566. [2020-01-16 19:11:20,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1566 states. [2020-01-16 19:11:20,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 7026 transitions. [2020-01-16 19:11:20,138 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 7026 transitions. Word has length 28 [2020-01-16 19:11:20,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:20,138 INFO L478 AbstractCegarLoop]: Abstraction has 1566 states and 7026 transitions. [2020-01-16 19:11:20,138 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:20,138 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 7026 transitions. [2020-01-16 19:11:20,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:20,140 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:20,140 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:20,140 INFO L426 AbstractCegarLoop]: === Iteration 889 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:20,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:20,140 INFO L82 PathProgramCache]: Analyzing trace with hash -2061413384, now seen corresponding path program 881 times [2020-01-16 19:11:20,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:20,141 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280404849] [2020-01-16 19:11:20,141 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:20,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:20,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:20,619 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280404849] [2020-01-16 19:11:20,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:20,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:20,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907362698] [2020-01-16 19:11:20,619 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:20,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:20,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:20,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:20,619 INFO L87 Difference]: Start difference. First operand 1566 states and 7026 transitions. Second operand 11 states. [2020-01-16 19:11:20,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:20,811 INFO L93 Difference]: Finished difference Result 2885 states and 11460 transitions. [2020-01-16 19:11:20,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:20,812 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:20,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:20,819 INFO L225 Difference]: With dead ends: 2885 [2020-01-16 19:11:20,819 INFO L226 Difference]: Without dead ends: 2865 [2020-01-16 19:11:20,819 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:20,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2865 states. [2020-01-16 19:11:20,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2865 to 1570. [2020-01-16 19:11:20,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 19:11:20,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7032 transitions. [2020-01-16 19:11:20,885 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7032 transitions. Word has length 28 [2020-01-16 19:11:20,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:20,885 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7032 transitions. [2020-01-16 19:11:20,885 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:20,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7032 transitions. [2020-01-16 19:11:20,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:20,888 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:20,888 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:20,888 INFO L426 AbstractCegarLoop]: === Iteration 890 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:20,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:20,888 INFO L82 PathProgramCache]: Analyzing trace with hash 470103540, now seen corresponding path program 882 times [2020-01-16 19:11:20,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:20,888 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760674327] [2020-01-16 19:11:20,888 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:20,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:21,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:21,377 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760674327] [2020-01-16 19:11:21,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:21,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:21,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175437865] [2020-01-16 19:11:21,377 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:21,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:21,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:21,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:21,378 INFO L87 Difference]: Start difference. First operand 1570 states and 7032 transitions. Second operand 11 states. [2020-01-16 19:11:21,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:21,575 INFO L93 Difference]: Finished difference Result 2878 states and 11443 transitions. [2020-01-16 19:11:21,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:21,576 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:21,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:21,583 INFO L225 Difference]: With dead ends: 2878 [2020-01-16 19:11:21,584 INFO L226 Difference]: Without dead ends: 2857 [2020-01-16 19:11:21,584 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:21,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2857 states. [2020-01-16 19:11:21,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2857 to 1562. [2020-01-16 19:11:21,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1562 states. [2020-01-16 19:11:21,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1562 states to 1562 states and 7015 transitions. [2020-01-16 19:11:21,649 INFO L78 Accepts]: Start accepts. Automaton has 1562 states and 7015 transitions. Word has length 28 [2020-01-16 19:11:21,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:21,649 INFO L478 AbstractCegarLoop]: Abstraction has 1562 states and 7015 transitions. [2020-01-16 19:11:21,649 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:21,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1562 states and 7015 transitions. [2020-01-16 19:11:21,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:21,652 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:21,652 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:21,652 INFO L426 AbstractCegarLoop]: === Iteration 891 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:21,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:21,652 INFO L82 PathProgramCache]: Analyzing trace with hash -2058198224, now seen corresponding path program 883 times [2020-01-16 19:11:21,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:21,652 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557001888] [2020-01-16 19:11:21,652 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:21,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:22,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:22,176 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557001888] [2020-01-16 19:11:22,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:22,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:22,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597938266] [2020-01-16 19:11:22,176 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:22,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:22,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:22,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:22,176 INFO L87 Difference]: Start difference. First operand 1562 states and 7015 transitions. Second operand 11 states. [2020-01-16 19:11:22,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:22,357 INFO L93 Difference]: Finished difference Result 2889 states and 11476 transitions. [2020-01-16 19:11:22,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:22,357 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:22,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:22,364 INFO L225 Difference]: With dead ends: 2889 [2020-01-16 19:11:22,364 INFO L226 Difference]: Without dead ends: 2873 [2020-01-16 19:11:22,365 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:22,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2873 states. [2020-01-16 19:11:22,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2873 to 1573. [2020-01-16 19:11:22,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:11:22,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7042 transitions. [2020-01-16 19:11:22,430 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7042 transitions. Word has length 28 [2020-01-16 19:11:22,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:22,430 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7042 transitions. [2020-01-16 19:11:22,430 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:22,430 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7042 transitions. [2020-01-16 19:11:22,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:22,432 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:22,433 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:22,433 INFO L426 AbstractCegarLoop]: === Iteration 892 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:22,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:22,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1313495726, now seen corresponding path program 884 times [2020-01-16 19:11:22,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:22,433 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931184816] [2020-01-16 19:11:22,433 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:22,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:22,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:22,953 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931184816] [2020-01-16 19:11:22,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:22,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:22,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553124270] [2020-01-16 19:11:22,954 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:22,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:22,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:22,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:22,954 INFO L87 Difference]: Start difference. First operand 1573 states and 7042 transitions. Second operand 11 states. [2020-01-16 19:11:23,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:23,095 INFO L93 Difference]: Finished difference Result 2893 states and 11477 transitions. [2020-01-16 19:11:23,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:23,096 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:23,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:23,103 INFO L225 Difference]: With dead ends: 2893 [2020-01-16 19:11:23,104 INFO L226 Difference]: Without dead ends: 2866 [2020-01-16 19:11:23,104 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:23,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2866 states. [2020-01-16 19:11:23,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2866 to 1566. [2020-01-16 19:11:23,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1566 states. [2020-01-16 19:11:23,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 7025 transitions. [2020-01-16 19:11:23,169 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 7025 transitions. Word has length 28 [2020-01-16 19:11:23,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:23,170 INFO L478 AbstractCegarLoop]: Abstraction has 1566 states and 7025 transitions. [2020-01-16 19:11:23,170 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:23,170 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 7025 transitions. [2020-01-16 19:11:23,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:23,172 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:23,172 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:23,172 INFO L426 AbstractCegarLoop]: === Iteration 893 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:23,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:23,172 INFO L82 PathProgramCache]: Analyzing trace with hash -890584908, now seen corresponding path program 885 times [2020-01-16 19:11:23,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:23,172 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207057949] [2020-01-16 19:11:23,173 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:23,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:23,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:23,693 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207057949] [2020-01-16 19:11:23,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:23,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:23,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724781793] [2020-01-16 19:11:23,693 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:23,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:23,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:23,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:23,694 INFO L87 Difference]: Start difference. First operand 1566 states and 7025 transitions. Second operand 11 states. [2020-01-16 19:11:23,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:23,901 INFO L93 Difference]: Finished difference Result 2878 states and 11448 transitions. [2020-01-16 19:11:23,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:23,901 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:23,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:23,908 INFO L225 Difference]: With dead ends: 2878 [2020-01-16 19:11:23,908 INFO L226 Difference]: Without dead ends: 2862 [2020-01-16 19:11:23,908 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:23,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2862 states. [2020-01-16 19:11:23,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2862 to 1569. [2020-01-16 19:11:23,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 19:11:23,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7030 transitions. [2020-01-16 19:11:23,974 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7030 transitions. Word has length 28 [2020-01-16 19:11:23,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:23,974 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7030 transitions. [2020-01-16 19:11:23,974 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:23,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7030 transitions. [2020-01-16 19:11:23,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:23,977 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:23,977 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:23,977 INFO L426 AbstractCegarLoop]: === Iteration 894 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:23,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:23,977 INFO L82 PathProgramCache]: Analyzing trace with hash -298391824, now seen corresponding path program 886 times [2020-01-16 19:11:23,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:23,977 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236510736] [2020-01-16 19:11:23,977 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:23,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:24,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:24,506 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236510736] [2020-01-16 19:11:24,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:24,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:24,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443073281] [2020-01-16 19:11:24,506 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:24,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:24,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:24,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:24,507 INFO L87 Difference]: Start difference. First operand 1569 states and 7030 transitions. Second operand 11 states. [2020-01-16 19:11:24,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:24,726 INFO L93 Difference]: Finished difference Result 2875 states and 11439 transitions. [2020-01-16 19:11:24,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:24,726 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:24,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:24,733 INFO L225 Difference]: With dead ends: 2875 [2020-01-16 19:11:24,734 INFO L226 Difference]: Without dead ends: 2859 [2020-01-16 19:11:24,734 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:24,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2859 states. [2020-01-16 19:11:24,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2859 to 1566. [2020-01-16 19:11:24,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1566 states. [2020-01-16 19:11:24,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 7022 transitions. [2020-01-16 19:11:24,799 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 7022 transitions. Word has length 28 [2020-01-16 19:11:24,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:24,799 INFO L478 AbstractCegarLoop]: Abstraction has 1566 states and 7022 transitions. [2020-01-16 19:11:24,799 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:24,799 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 7022 transitions. [2020-01-16 19:11:24,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:24,801 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:24,802 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:24,802 INFO L426 AbstractCegarLoop]: === Iteration 895 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:24,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:24,802 INFO L82 PathProgramCache]: Analyzing trace with hash -135379306, now seen corresponding path program 887 times [2020-01-16 19:11:24,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:24,802 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822058680] [2020-01-16 19:11:24,802 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:24,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:25,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:25,320 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822058680] [2020-01-16 19:11:25,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:25,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:25,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836193019] [2020-01-16 19:11:25,320 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:25,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:25,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:25,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:25,321 INFO L87 Difference]: Start difference. First operand 1566 states and 7022 transitions. Second operand 11 states. [2020-01-16 19:11:25,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:25,515 INFO L93 Difference]: Finished difference Result 2887 states and 11461 transitions. [2020-01-16 19:11:25,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:25,516 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:25,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:25,523 INFO L225 Difference]: With dead ends: 2887 [2020-01-16 19:11:25,523 INFO L226 Difference]: Without dead ends: 2867 [2020-01-16 19:11:25,523 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:25,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2867 states. [2020-01-16 19:11:25,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2867 to 1570. [2020-01-16 19:11:25,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 19:11:25,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7028 transitions. [2020-01-16 19:11:25,589 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7028 transitions. Word has length 28 [2020-01-16 19:11:25,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:25,589 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7028 transitions. [2020-01-16 19:11:25,589 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:25,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7028 transitions. [2020-01-16 19:11:25,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:25,592 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:25,592 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:25,592 INFO L426 AbstractCegarLoop]: === Iteration 896 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:25,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:25,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1898829678, now seen corresponding path program 888 times [2020-01-16 19:11:25,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:25,592 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344185990] [2020-01-16 19:11:25,592 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:25,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:26,035 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 19:11:26,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:26,153 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344185990] [2020-01-16 19:11:26,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:26,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:26,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209246125] [2020-01-16 19:11:26,154 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:26,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:26,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:26,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:26,154 INFO L87 Difference]: Start difference. First operand 1570 states and 7028 transitions. Second operand 11 states. [2020-01-16 19:11:26,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:26,347 INFO L93 Difference]: Finished difference Result 2880 states and 11444 transitions. [2020-01-16 19:11:26,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:26,348 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:26,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:26,355 INFO L225 Difference]: With dead ends: 2880 [2020-01-16 19:11:26,355 INFO L226 Difference]: Without dead ends: 2855 [2020-01-16 19:11:26,355 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:26,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2855 states. [2020-01-16 19:11:26,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2855 to 1558. [2020-01-16 19:11:26,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1558 states. [2020-01-16 19:11:26,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 7004 transitions. [2020-01-16 19:11:26,421 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 7004 transitions. Word has length 28 [2020-01-16 19:11:26,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:26,421 INFO L478 AbstractCegarLoop]: Abstraction has 1558 states and 7004 transitions. [2020-01-16 19:11:26,421 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:26,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 7004 transitions. [2020-01-16 19:11:26,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:26,424 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:26,424 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:26,424 INFO L426 AbstractCegarLoop]: === Iteration 897 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:26,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:26,424 INFO L82 PathProgramCache]: Analyzing trace with hash 236053416, now seen corresponding path program 889 times [2020-01-16 19:11:26,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:26,424 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697213994] [2020-01-16 19:11:26,424 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:26,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:26,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:26,933 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697213994] [2020-01-16 19:11:26,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:26,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:26,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280880292] [2020-01-16 19:11:26,934 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:26,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:26,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:26,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:26,935 INFO L87 Difference]: Start difference. First operand 1558 states and 7004 transitions. Second operand 11 states. [2020-01-16 19:11:27,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:27,162 INFO L93 Difference]: Finished difference Result 2875 states and 11459 transitions. [2020-01-16 19:11:27,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:27,162 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:27,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:27,169 INFO L225 Difference]: With dead ends: 2875 [2020-01-16 19:11:27,169 INFO L226 Difference]: Without dead ends: 2860 [2020-01-16 19:11:27,169 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:27,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2860 states. [2020-01-16 19:11:27,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2860 to 1571. [2020-01-16 19:11:27,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:11:27,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7046 transitions. [2020-01-16 19:11:27,235 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7046 transitions. Word has length 28 [2020-01-16 19:11:27,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:27,236 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7046 transitions. [2020-01-16 19:11:27,236 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:27,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7046 transitions. [2020-01-16 19:11:27,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:27,238 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:27,238 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:27,238 INFO L426 AbstractCegarLoop]: === Iteration 898 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:27,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:27,238 INFO L82 PathProgramCache]: Analyzing trace with hash 980755914, now seen corresponding path program 890 times [2020-01-16 19:11:27,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:27,239 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172358600] [2020-01-16 19:11:27,239 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:27,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:27,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:27,754 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172358600] [2020-01-16 19:11:27,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:27,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:27,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597688855] [2020-01-16 19:11:27,754 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:27,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:27,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:27,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:27,755 INFO L87 Difference]: Start difference. First operand 1571 states and 7046 transitions. Second operand 11 states. [2020-01-16 19:11:27,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:27,975 INFO L93 Difference]: Finished difference Result 2876 states and 11456 transitions. [2020-01-16 19:11:27,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:27,975 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:27,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:27,983 INFO L225 Difference]: With dead ends: 2876 [2020-01-16 19:11:27,983 INFO L226 Difference]: Without dead ends: 2855 [2020-01-16 19:11:27,983 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:28,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2855 states. [2020-01-16 19:11:28,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2855 to 1566. [2020-01-16 19:11:28,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1566 states. [2020-01-16 19:11:28,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 7032 transitions. [2020-01-16 19:11:28,049 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 7032 transitions. Word has length 28 [2020-01-16 19:11:28,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:28,049 INFO L478 AbstractCegarLoop]: Abstraction has 1566 states and 7032 transitions. [2020-01-16 19:11:28,049 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:28,049 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 7032 transitions. [2020-01-16 19:11:28,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:28,051 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:28,051 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:28,051 INFO L426 AbstractCegarLoop]: === Iteration 899 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:28,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:28,052 INFO L82 PathProgramCache]: Analyzing trace with hash -837031964, now seen corresponding path program 891 times [2020-01-16 19:11:28,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:28,052 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558825159] [2020-01-16 19:11:28,052 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:28,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:28,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:28,554 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558825159] [2020-01-16 19:11:28,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:28,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:28,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16337092] [2020-01-16 19:11:28,555 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:28,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:28,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:28,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:28,556 INFO L87 Difference]: Start difference. First operand 1566 states and 7032 transitions. Second operand 11 states. [2020-01-16 19:11:28,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:28,790 INFO L93 Difference]: Finished difference Result 2877 states and 11458 transitions. [2020-01-16 19:11:28,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:28,790 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:28,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:28,798 INFO L225 Difference]: With dead ends: 2877 [2020-01-16 19:11:28,798 INFO L226 Difference]: Without dead ends: 2862 [2020-01-16 19:11:28,798 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:28,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2862 states. [2020-01-16 19:11:28,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2862 to 1571. [2020-01-16 19:11:28,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:11:28,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7041 transitions. [2020-01-16 19:11:28,864 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7041 transitions. Word has length 28 [2020-01-16 19:11:28,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:28,864 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7041 transitions. [2020-01-16 19:11:28,864 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:28,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7041 transitions. [2020-01-16 19:11:28,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:28,866 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:28,866 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:28,867 INFO L426 AbstractCegarLoop]: === Iteration 900 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:28,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:28,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1397075530, now seen corresponding path program 892 times [2020-01-16 19:11:28,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:28,867 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145712026] [2020-01-16 19:11:28,867 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:28,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:29,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:29,368 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145712026] [2020-01-16 19:11:29,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:29,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:29,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459075813] [2020-01-16 19:11:29,369 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:29,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:29,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:29,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:29,369 INFO L87 Difference]: Start difference. First operand 1571 states and 7041 transitions. Second operand 11 states. [2020-01-16 19:11:29,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:29,635 INFO L93 Difference]: Finished difference Result 2880 states and 11459 transitions. [2020-01-16 19:11:29,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:29,635 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:29,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:29,642 INFO L225 Difference]: With dead ends: 2880 [2020-01-16 19:11:29,642 INFO L226 Difference]: Without dead ends: 2857 [2020-01-16 19:11:29,642 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:29,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2857 states. [2020-01-16 19:11:29,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2857 to 1566. [2020-01-16 19:11:29,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1566 states. [2020-01-16 19:11:29,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 7027 transitions. [2020-01-16 19:11:29,708 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 7027 transitions. Word has length 28 [2020-01-16 19:11:29,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:29,708 INFO L478 AbstractCegarLoop]: Abstraction has 1566 states and 7027 transitions. [2020-01-16 19:11:29,708 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:29,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 7027 transitions. [2020-01-16 19:11:29,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:29,710 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:29,710 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:29,710 INFO L426 AbstractCegarLoop]: === Iteration 901 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:29,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:29,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1518611492, now seen corresponding path program 893 times [2020-01-16 19:11:29,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:29,711 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164224744] [2020-01-16 19:11:29,711 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:29,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:30,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:30,229 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164224744] [2020-01-16 19:11:30,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:30,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:30,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332530410] [2020-01-16 19:11:30,230 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:30,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:30,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:30,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:30,230 INFO L87 Difference]: Start difference. First operand 1566 states and 7027 transitions. Second operand 11 states. [2020-01-16 19:11:30,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:30,498 INFO L93 Difference]: Finished difference Result 2880 states and 11460 transitions. [2020-01-16 19:11:30,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:30,498 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:30,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:30,505 INFO L225 Difference]: With dead ends: 2880 [2020-01-16 19:11:30,505 INFO L226 Difference]: Without dead ends: 2864 [2020-01-16 19:11:30,505 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:30,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2864 states. [2020-01-16 19:11:30,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2864 to 1572. [2020-01-16 19:11:30,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 19:11:30,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7038 transitions. [2020-01-16 19:11:30,571 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7038 transitions. Word has length 28 [2020-01-16 19:11:30,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:30,571 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7038 transitions. [2020-01-16 19:11:30,571 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:30,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7038 transitions. [2020-01-16 19:11:30,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:30,574 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:30,574 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:30,574 INFO L426 AbstractCegarLoop]: === Iteration 902 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:30,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:30,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1286950808, now seen corresponding path program 894 times [2020-01-16 19:11:30,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:30,574 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305633175] [2020-01-16 19:11:30,574 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:30,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:31,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:31,083 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305633175] [2020-01-16 19:11:31,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:31,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:31,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519958590] [2020-01-16 19:11:31,083 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:31,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:31,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:31,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:31,084 INFO L87 Difference]: Start difference. First operand 1572 states and 7038 transitions. Second operand 11 states. [2020-01-16 19:11:31,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:31,357 INFO L93 Difference]: Finished difference Result 2882 states and 11458 transitions. [2020-01-16 19:11:31,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:31,357 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:31,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:31,364 INFO L225 Difference]: With dead ends: 2882 [2020-01-16 19:11:31,365 INFO L226 Difference]: Without dead ends: 2853 [2020-01-16 19:11:31,365 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:31,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2853 states. [2020-01-16 19:11:31,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2853 to 1561. [2020-01-16 19:11:31,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1561 states. [2020-01-16 19:11:31,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1561 states to 1561 states and 7015 transitions. [2020-01-16 19:11:31,430 INFO L78 Accepts]: Start accepts. Automaton has 1561 states and 7015 transitions. Word has length 28 [2020-01-16 19:11:31,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:31,430 INFO L478 AbstractCegarLoop]: Abstraction has 1561 states and 7015 transitions. [2020-01-16 19:11:31,430 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:31,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1561 states and 7015 transitions. [2020-01-16 19:11:31,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:31,433 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:31,433 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:31,433 INFO L426 AbstractCegarLoop]: === Iteration 903 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:31,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:31,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1746731620, now seen corresponding path program 895 times [2020-01-16 19:11:31,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:31,433 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742267762] [2020-01-16 19:11:31,433 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:31,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:31,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:31,950 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742267762] [2020-01-16 19:11:31,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:31,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:31,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212044405] [2020-01-16 19:11:31,951 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:31,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:31,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:31,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:31,951 INFO L87 Difference]: Start difference. First operand 1561 states and 7015 transitions. Second operand 11 states. [2020-01-16 19:11:32,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:32,215 INFO L93 Difference]: Finished difference Result 2863 states and 11423 transitions. [2020-01-16 19:11:32,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:32,216 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:32,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:32,223 INFO L225 Difference]: With dead ends: 2863 [2020-01-16 19:11:32,223 INFO L226 Difference]: Without dead ends: 2848 [2020-01-16 19:11:32,223 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:32,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2848 states. [2020-01-16 19:11:32,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2848 to 1569. [2020-01-16 19:11:32,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 19:11:32,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7035 transitions. [2020-01-16 19:11:32,289 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7035 transitions. Word has length 28 [2020-01-16 19:11:32,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:32,289 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7035 transitions. [2020-01-16 19:11:32,289 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:32,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7035 transitions. [2020-01-16 19:11:32,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:32,291 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:32,291 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:32,292 INFO L426 AbstractCegarLoop]: === Iteration 904 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:32,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:32,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1803533178, now seen corresponding path program 896 times [2020-01-16 19:11:32,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:32,292 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840095706] [2020-01-16 19:11:32,292 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:32,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:32,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:32,821 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840095706] [2020-01-16 19:11:32,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:32,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:32,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499306549] [2020-01-16 19:11:32,821 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:32,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:32,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:32,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:32,822 INFO L87 Difference]: Start difference. First operand 1569 states and 7035 transitions. Second operand 11 states. [2020-01-16 19:11:33,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:33,094 INFO L93 Difference]: Finished difference Result 2864 states and 11420 transitions. [2020-01-16 19:11:33,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:33,094 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:33,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:33,101 INFO L225 Difference]: With dead ends: 2864 [2020-01-16 19:11:33,102 INFO L226 Difference]: Without dead ends: 2843 [2020-01-16 19:11:33,102 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:33,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2843 states. [2020-01-16 19:11:33,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2843 to 1564. [2020-01-16 19:11:33,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1564 states. [2020-01-16 19:11:33,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 7023 transitions. [2020-01-16 19:11:33,167 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 7023 transitions. Word has length 28 [2020-01-16 19:11:33,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:33,168 INFO L478 AbstractCegarLoop]: Abstraction has 1564 states and 7023 transitions. [2020-01-16 19:11:33,168 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:33,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 7023 transitions. [2020-01-16 19:11:33,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:33,170 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:33,170 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:33,170 INFO L426 AbstractCegarLoop]: === Iteration 905 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:33,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:33,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1370119256, now seen corresponding path program 897 times [2020-01-16 19:11:33,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:33,171 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417634121] [2020-01-16 19:11:33,171 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:33,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:33,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:33,691 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417634121] [2020-01-16 19:11:33,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:33,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:33,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730913693] [2020-01-16 19:11:33,691 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:33,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:33,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:33,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:33,692 INFO L87 Difference]: Start difference. First operand 1564 states and 7023 transitions. Second operand 11 states. [2020-01-16 19:11:33,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:33,923 INFO L93 Difference]: Finished difference Result 2858 states and 11408 transitions. [2020-01-16 19:11:33,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:33,924 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:33,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:33,931 INFO L225 Difference]: With dead ends: 2858 [2020-01-16 19:11:33,931 INFO L226 Difference]: Without dead ends: 2843 [2020-01-16 19:11:33,931 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:33,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2843 states. [2020-01-16 19:11:33,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2843 to 1567. [2020-01-16 19:11:33,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 19:11:33,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7028 transitions. [2020-01-16 19:11:33,996 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7028 transitions. Word has length 28 [2020-01-16 19:11:33,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:33,996 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7028 transitions. [2020-01-16 19:11:33,997 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:33,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7028 transitions. [2020-01-16 19:11:33,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:33,999 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:33,999 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:33,999 INFO L426 AbstractCegarLoop]: === Iteration 906 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:33,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:33,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1577717284, now seen corresponding path program 898 times [2020-01-16 19:11:33,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:33,999 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128582146] [2020-01-16 19:11:33,999 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:34,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:34,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:34,510 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128582146] [2020-01-16 19:11:34,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:34,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:34,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93313000] [2020-01-16 19:11:34,510 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:34,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:34,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:34,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:34,510 INFO L87 Difference]: Start difference. First operand 1567 states and 7028 transitions. Second operand 11 states. [2020-01-16 19:11:34,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:34,733 INFO L93 Difference]: Finished difference Result 2856 states and 11401 transitions. [2020-01-16 19:11:34,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:34,734 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:34,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:34,740 INFO L225 Difference]: With dead ends: 2856 [2020-01-16 19:11:34,741 INFO L226 Difference]: Without dead ends: 2840 [2020-01-16 19:11:34,741 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:34,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2840 states. [2020-01-16 19:11:34,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2840 to 1564. [2020-01-16 19:11:34,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1564 states. [2020-01-16 19:11:34,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 7020 transitions. [2020-01-16 19:11:34,809 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 7020 transitions. Word has length 28 [2020-01-16 19:11:34,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:34,809 INFO L478 AbstractCegarLoop]: Abstraction has 1564 states and 7020 transitions. [2020-01-16 19:11:34,809 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:34,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 7020 transitions. [2020-01-16 19:11:34,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:34,812 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:34,812 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:34,812 INFO L426 AbstractCegarLoop]: === Iteration 907 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:34,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:34,812 INFO L82 PathProgramCache]: Analyzing trace with hash -614913654, now seen corresponding path program 899 times [2020-01-16 19:11:34,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:34,813 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028176554] [2020-01-16 19:11:34,813 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:34,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:35,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:35,335 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028176554] [2020-01-16 19:11:35,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:35,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:35,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084373176] [2020-01-16 19:11:35,335 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:35,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:35,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:35,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:35,335 INFO L87 Difference]: Start difference. First operand 1564 states and 7020 transitions. Second operand 11 states. [2020-01-16 19:11:35,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:35,535 INFO L93 Difference]: Finished difference Result 2860 states and 11409 transitions. [2020-01-16 19:11:35,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:35,535 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:35,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:35,543 INFO L225 Difference]: With dead ends: 2860 [2020-01-16 19:11:35,543 INFO L226 Difference]: Without dead ends: 2844 [2020-01-16 19:11:35,543 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:35,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2844 states. [2020-01-16 19:11:35,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2844 to 1567. [2020-01-16 19:11:35,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 19:11:35,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7025 transitions. [2020-01-16 19:11:35,610 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7025 transitions. Word has length 28 [2020-01-16 19:11:35,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:35,610 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7025 transitions. [2020-01-16 19:11:35,610 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:35,610 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7025 transitions. [2020-01-16 19:11:35,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:35,612 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:35,613 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:35,613 INFO L426 AbstractCegarLoop]: === Iteration 908 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:35,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:35,613 INFO L82 PathProgramCache]: Analyzing trace with hash -22720570, now seen corresponding path program 900 times [2020-01-16 19:11:35,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:35,613 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833093315] [2020-01-16 19:11:35,613 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:35,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:36,128 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 19:11:36,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:36,136 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833093315] [2020-01-16 19:11:36,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:36,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:36,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964946381] [2020-01-16 19:11:36,136 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:36,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:36,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:36,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:36,136 INFO L87 Difference]: Start difference. First operand 1567 states and 7025 transitions. Second operand 11 states. [2020-01-16 19:11:36,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:36,412 INFO L93 Difference]: Finished difference Result 2857 states and 11400 transitions. [2020-01-16 19:11:36,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:36,412 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:36,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:36,420 INFO L225 Difference]: With dead ends: 2857 [2020-01-16 19:11:36,420 INFO L226 Difference]: Without dead ends: 2838 [2020-01-16 19:11:36,420 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:36,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2838 states. [2020-01-16 19:11:36,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2838 to 1561. [2020-01-16 19:11:36,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1561 states. [2020-01-16 19:11:36,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1561 states to 1561 states and 7012 transitions. [2020-01-16 19:11:36,486 INFO L78 Accepts]: Start accepts. Automaton has 1561 states and 7012 transitions. Word has length 28 [2020-01-16 19:11:36,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:36,486 INFO L478 AbstractCegarLoop]: Abstraction has 1561 states and 7012 transitions. [2020-01-16 19:11:36,486 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:36,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1561 states and 7012 transitions. [2020-01-16 19:11:36,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:36,488 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:36,488 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:36,489 INFO L426 AbstractCegarLoop]: === Iteration 909 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:36,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:36,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1324838688, now seen corresponding path program 901 times [2020-01-16 19:11:36,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:36,489 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841037632] [2020-01-16 19:11:36,489 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:36,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:36,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:36,993 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841037632] [2020-01-16 19:11:36,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:36,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:36,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415161286] [2020-01-16 19:11:36,994 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:36,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:36,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:36,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:36,994 INFO L87 Difference]: Start difference. First operand 1561 states and 7012 transitions. Second operand 11 states. [2020-01-16 19:11:37,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:37,203 INFO L93 Difference]: Finished difference Result 2867 states and 11428 transitions. [2020-01-16 19:11:37,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:37,204 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:37,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:37,211 INFO L225 Difference]: With dead ends: 2867 [2020-01-16 19:11:37,211 INFO L226 Difference]: Without dead ends: 2852 [2020-01-16 19:11:37,211 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:37,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2852 states. [2020-01-16 19:11:37,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2852 to 1569. [2020-01-16 19:11:37,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 19:11:37,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7032 transitions. [2020-01-16 19:11:37,281 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7032 transitions. Word has length 28 [2020-01-16 19:11:37,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:37,281 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7032 transitions. [2020-01-16 19:11:37,281 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:37,281 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7032 transitions. [2020-01-16 19:11:37,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:37,284 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:37,284 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:37,284 INFO L426 AbstractCegarLoop]: === Iteration 910 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:37,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:37,284 INFO L82 PathProgramCache]: Analyzing trace with hash -736021114, now seen corresponding path program 902 times [2020-01-16 19:11:37,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:37,284 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695008615] [2020-01-16 19:11:37,284 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:37,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:37,777 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 19:11:37,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:37,784 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695008615] [2020-01-16 19:11:37,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:37,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:37,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119036227] [2020-01-16 19:11:37,784 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:37,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:37,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:37,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:37,784 INFO L87 Difference]: Start difference. First operand 1569 states and 7032 transitions. Second operand 11 states. [2020-01-16 19:11:37,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:37,980 INFO L93 Difference]: Finished difference Result 2870 states and 11429 transitions. [2020-01-16 19:11:37,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:37,981 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:37,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:37,988 INFO L225 Difference]: With dead ends: 2870 [2020-01-16 19:11:37,988 INFO L226 Difference]: Without dead ends: 2847 [2020-01-16 19:11:37,988 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:38,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2847 states. [2020-01-16 19:11:38,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2847 to 1564. [2020-01-16 19:11:38,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1564 states. [2020-01-16 19:11:38,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 7020 transitions. [2020-01-16 19:11:38,053 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 7020 transitions. Word has length 28 [2020-01-16 19:11:38,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:38,053 INFO L478 AbstractCegarLoop]: Abstraction has 1564 states and 7020 transitions. [2020-01-16 19:11:38,054 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:38,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 7020 transitions. [2020-01-16 19:11:38,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:38,056 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:38,056 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:38,056 INFO L426 AbstractCegarLoop]: === Iteration 911 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:38,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:38,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1813018396, now seen corresponding path program 903 times [2020-01-16 19:11:38,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:38,056 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050770988] [2020-01-16 19:11:38,056 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:38,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:38,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:38,568 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050770988] [2020-01-16 19:11:38,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:38,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:38,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170039134] [2020-01-16 19:11:38,569 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:38,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:38,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:38,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:38,569 INFO L87 Difference]: Start difference. First operand 1564 states and 7020 transitions. Second operand 11 states. [2020-01-16 19:11:38,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:38,741 INFO L93 Difference]: Finished difference Result 2860 states and 11409 transitions. [2020-01-16 19:11:38,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:38,742 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:38,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:38,749 INFO L225 Difference]: With dead ends: 2860 [2020-01-16 19:11:38,749 INFO L226 Difference]: Without dead ends: 2845 [2020-01-16 19:11:38,750 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:38,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2845 states. [2020-01-16 19:11:38,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2845 to 1567. [2020-01-16 19:11:38,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 19:11:38,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7025 transitions. [2020-01-16 19:11:38,815 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7025 transitions. Word has length 28 [2020-01-16 19:11:38,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:38,816 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7025 transitions. [2020-01-16 19:11:38,816 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:38,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7025 transitions. [2020-01-16 19:11:38,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:38,848 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:38,848 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:38,848 INFO L426 AbstractCegarLoop]: === Iteration 912 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:38,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:38,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1134818144, now seen corresponding path program 904 times [2020-01-16 19:11:38,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:38,849 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972862316] [2020-01-16 19:11:38,849 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:38,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:39,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:39,345 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972862316] [2020-01-16 19:11:39,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:39,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:39,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181406725] [2020-01-16 19:11:39,345 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:39,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:39,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:39,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:39,345 INFO L87 Difference]: Start difference. First operand 1567 states and 7025 transitions. Second operand 11 states. [2020-01-16 19:11:39,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:39,529 INFO L93 Difference]: Finished difference Result 2858 states and 11402 transitions. [2020-01-16 19:11:39,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:39,530 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:39,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:39,537 INFO L225 Difference]: With dead ends: 2858 [2020-01-16 19:11:39,538 INFO L226 Difference]: Without dead ends: 2842 [2020-01-16 19:11:39,538 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:39,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2020-01-16 19:11:39,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1564. [2020-01-16 19:11:39,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1564 states. [2020-01-16 19:11:39,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 7017 transitions. [2020-01-16 19:11:39,605 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 7017 transitions. Word has length 28 [2020-01-16 19:11:39,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:39,605 INFO L478 AbstractCegarLoop]: Abstraction has 1564 states and 7017 transitions. [2020-01-16 19:11:39,605 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:39,605 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 7017 transitions. [2020-01-16 19:11:39,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:39,607 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:39,607 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:39,607 INFO L426 AbstractCegarLoop]: === Iteration 913 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:39,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:39,608 INFO L82 PathProgramCache]: Analyzing trace with hash 452598410, now seen corresponding path program 905 times [2020-01-16 19:11:39,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:39,608 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840546668] [2020-01-16 19:11:39,608 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:39,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:40,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:40,097 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840546668] [2020-01-16 19:11:40,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:40,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:40,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720064160] [2020-01-16 19:11:40,098 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:40,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:40,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:40,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:40,098 INFO L87 Difference]: Start difference. First operand 1564 states and 7017 transitions. Second operand 11 states. [2020-01-16 19:11:40,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:40,281 INFO L93 Difference]: Finished difference Result 2866 states and 11418 transitions. [2020-01-16 19:11:40,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:40,282 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:40,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:40,288 INFO L225 Difference]: With dead ends: 2866 [2020-01-16 19:11:40,289 INFO L226 Difference]: Without dead ends: 2848 [2020-01-16 19:11:40,289 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:40,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2848 states. [2020-01-16 19:11:40,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2848 to 1567. [2020-01-16 19:11:40,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 19:11:40,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7022 transitions. [2020-01-16 19:11:40,355 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7022 transitions. Word has length 28 [2020-01-16 19:11:40,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:40,355 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7022 transitions. [2020-01-16 19:11:40,355 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:40,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7022 transitions. [2020-01-16 19:11:40,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:40,358 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:40,358 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:40,358 INFO L426 AbstractCegarLoop]: === Iteration 914 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:40,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:40,358 INFO L82 PathProgramCache]: Analyzing trace with hash 628471878, now seen corresponding path program 906 times [2020-01-16 19:11:40,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:40,358 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27285336] [2020-01-16 19:11:40,358 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:40,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:40,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:40,845 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27285336] [2020-01-16 19:11:40,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:40,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:40,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317006561] [2020-01-16 19:11:40,846 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:40,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:40,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:40,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:40,846 INFO L87 Difference]: Start difference. First operand 1567 states and 7022 transitions. Second operand 11 states. [2020-01-16 19:11:41,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:41,038 INFO L93 Difference]: Finished difference Result 2861 states and 11405 transitions. [2020-01-16 19:11:41,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:41,038 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:41,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:41,046 INFO L225 Difference]: With dead ends: 2861 [2020-01-16 19:11:41,046 INFO L226 Difference]: Without dead ends: 2842 [2020-01-16 19:11:41,046 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:41,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2020-01-16 19:11:41,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1561. [2020-01-16 19:11:41,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1561 states. [2020-01-16 19:11:41,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1561 states to 1561 states and 7009 transitions. [2020-01-16 19:11:41,113 INFO L78 Accepts]: Start accepts. Automaton has 1561 states and 7009 transitions. Word has length 28 [2020-01-16 19:11:41,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:41,113 INFO L478 AbstractCegarLoop]: Abstraction has 1561 states and 7009 transitions. [2020-01-16 19:11:41,113 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:41,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1561 states and 7009 transitions. [2020-01-16 19:11:41,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:41,115 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:41,115 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:41,115 INFO L426 AbstractCegarLoop]: === Iteration 915 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:41,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:41,116 INFO L82 PathProgramCache]: Analyzing trace with hash -288888928, now seen corresponding path program 907 times [2020-01-16 19:11:41,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:41,116 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030005451] [2020-01-16 19:11:41,116 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:41,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:41,607 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 19:11:41,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:41,614 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030005451] [2020-01-16 19:11:41,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:41,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:41,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639944579] [2020-01-16 19:11:41,614 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:41,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:41,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:41,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:41,615 INFO L87 Difference]: Start difference. First operand 1561 states and 7009 transitions. Second operand 11 states. [2020-01-16 19:11:41,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:41,787 INFO L93 Difference]: Finished difference Result 2872 states and 11437 transitions. [2020-01-16 19:11:41,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:41,788 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:41,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:41,794 INFO L225 Difference]: With dead ends: 2872 [2020-01-16 19:11:41,794 INFO L226 Difference]: Without dead ends: 2856 [2020-01-16 19:11:41,795 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:41,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2856 states. [2020-01-16 19:11:41,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2856 to 1570. [2020-01-16 19:11:41,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 19:11:41,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7031 transitions. [2020-01-16 19:11:41,859 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7031 transitions. Word has length 28 [2020-01-16 19:11:41,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:41,860 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7031 transitions. [2020-01-16 19:11:41,860 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:41,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7031 transitions. [2020-01-16 19:11:41,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:41,862 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:41,862 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:41,862 INFO L426 AbstractCegarLoop]: === Iteration 916 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:41,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:41,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1200516068, now seen corresponding path program 908 times [2020-01-16 19:11:41,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:41,862 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188310107] [2020-01-16 19:11:41,862 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:41,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:42,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:42,358 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188310107] [2020-01-16 19:11:42,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:42,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:42,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128600636] [2020-01-16 19:11:42,358 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:42,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:42,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:42,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:42,359 INFO L87 Difference]: Start difference. First operand 1570 states and 7031 transitions. Second operand 11 states. [2020-01-16 19:11:42,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:42,530 INFO L93 Difference]: Finished difference Result 2874 states and 11435 transitions. [2020-01-16 19:11:42,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:42,531 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:42,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:42,538 INFO L225 Difference]: With dead ends: 2874 [2020-01-16 19:11:42,538 INFO L226 Difference]: Without dead ends: 2850 [2020-01-16 19:11:42,538 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:42,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2850 states. [2020-01-16 19:11:42,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2850 to 1564. [2020-01-16 19:11:42,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1564 states. [2020-01-16 19:11:42,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 7017 transitions. [2020-01-16 19:11:42,606 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 7017 transitions. Word has length 28 [2020-01-16 19:11:42,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:42,606 INFO L478 AbstractCegarLoop]: Abstraction has 1564 states and 7017 transitions. [2020-01-16 19:11:42,606 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:42,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 7017 transitions. [2020-01-16 19:11:42,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:42,609 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:42,609 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:42,609 INFO L426 AbstractCegarLoop]: === Iteration 917 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:42,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:42,609 INFO L82 PathProgramCache]: Analyzing trace with hash 868221284, now seen corresponding path program 909 times [2020-01-16 19:11:42,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:42,609 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630150220] [2020-01-16 19:11:42,609 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:42,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:43,105 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 19:11:43,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:43,113 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630150220] [2020-01-16 19:11:43,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:43,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:43,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041912471] [2020-01-16 19:11:43,113 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:43,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:43,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:43,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:43,113 INFO L87 Difference]: Start difference. First operand 1564 states and 7017 transitions. Second operand 11 states. [2020-01-16 19:11:43,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:43,293 INFO L93 Difference]: Finished difference Result 2864 states and 11415 transitions. [2020-01-16 19:11:43,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:43,293 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:43,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:43,300 INFO L225 Difference]: With dead ends: 2864 [2020-01-16 19:11:43,300 INFO L226 Difference]: Without dead ends: 2848 [2020-01-16 19:11:43,300 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:43,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2848 states. [2020-01-16 19:11:43,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2848 to 1567. [2020-01-16 19:11:43,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 19:11:43,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7022 transitions. [2020-01-16 19:11:43,365 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7022 transitions. Word has length 28 [2020-01-16 19:11:43,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:43,365 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7022 transitions. [2020-01-16 19:11:43,365 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:43,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7022 transitions. [2020-01-16 19:11:43,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:43,367 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:43,367 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:43,368 INFO L426 AbstractCegarLoop]: === Iteration 918 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:43,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:43,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1460414368, now seen corresponding path program 910 times [2020-01-16 19:11:43,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:43,368 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705579801] [2020-01-16 19:11:43,368 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:43,885 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 19:11:43,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:43,891 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705579801] [2020-01-16 19:11:43,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:43,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:43,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661638769] [2020-01-16 19:11:43,891 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:43,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:43,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:43,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:43,892 INFO L87 Difference]: Start difference. First operand 1567 states and 7022 transitions. Second operand 11 states. [2020-01-16 19:11:44,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:44,100 INFO L93 Difference]: Finished difference Result 2861 states and 11406 transitions. [2020-01-16 19:11:44,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:44,101 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:44,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:44,108 INFO L225 Difference]: With dead ends: 2861 [2020-01-16 19:11:44,108 INFO L226 Difference]: Without dead ends: 2845 [2020-01-16 19:11:44,108 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:44,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2845 states. [2020-01-16 19:11:44,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2845 to 1564. [2020-01-16 19:11:44,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1564 states. [2020-01-16 19:11:44,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 7014 transitions. [2020-01-16 19:11:44,173 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 7014 transitions. Word has length 28 [2020-01-16 19:11:44,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:44,174 INFO L478 AbstractCegarLoop]: Abstraction has 1564 states and 7014 transitions. [2020-01-16 19:11:44,174 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:44,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 7014 transitions. [2020-01-16 19:11:44,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:44,176 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:44,176 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:44,176 INFO L426 AbstractCegarLoop]: === Iteration 919 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:44,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:44,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1916334808, now seen corresponding path program 911 times [2020-01-16 19:11:44,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:44,177 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832403814] [2020-01-16 19:11:44,177 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:44,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:44,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:44,685 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832403814] [2020-01-16 19:11:44,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:44,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:44,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512630307] [2020-01-16 19:11:44,685 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:44,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:44,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:44,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:44,686 INFO L87 Difference]: Start difference. First operand 1564 states and 7014 transitions. Second operand 11 states. [2020-01-16 19:11:44,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:44,873 INFO L93 Difference]: Finished difference Result 2868 states and 11420 transitions. [2020-01-16 19:11:44,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:44,874 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:44,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:44,881 INFO L225 Difference]: With dead ends: 2868 [2020-01-16 19:11:44,882 INFO L226 Difference]: Without dead ends: 2850 [2020-01-16 19:11:44,882 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:44,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2850 states. [2020-01-16 19:11:44,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2850 to 1567. [2020-01-16 19:11:44,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 19:11:44,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7019 transitions. [2020-01-16 19:11:44,949 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7019 transitions. Word has length 28 [2020-01-16 19:11:44,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:44,949 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7019 transitions. [2020-01-16 19:11:44,949 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:44,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7019 transitions. [2020-01-16 19:11:44,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:44,951 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:44,952 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:44,952 INFO L426 AbstractCegarLoop]: === Iteration 920 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:44,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:44,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1740461340, now seen corresponding path program 912 times [2020-01-16 19:11:44,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:44,952 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998855182] [2020-01-16 19:11:44,952 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:44,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:45,479 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 19:11:45,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:45,486 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998855182] [2020-01-16 19:11:45,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:45,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:45,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627900803] [2020-01-16 19:11:45,486 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:45,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:45,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:45,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:45,487 INFO L87 Difference]: Start difference. First operand 1567 states and 7019 transitions. Second operand 11 states. [2020-01-16 19:11:45,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:45,690 INFO L93 Difference]: Finished difference Result 2863 states and 11407 transitions. [2020-01-16 19:11:45,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:45,690 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:45,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:45,697 INFO L225 Difference]: With dead ends: 2863 [2020-01-16 19:11:45,697 INFO L226 Difference]: Without dead ends: 2841 [2020-01-16 19:11:45,697 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:45,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2841 states. [2020-01-16 19:11:45,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2841 to 1558. [2020-01-16 19:11:45,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1558 states. [2020-01-16 19:11:45,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 7001 transitions. [2020-01-16 19:11:45,763 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 7001 transitions. Word has length 28 [2020-01-16 19:11:45,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:45,763 INFO L478 AbstractCegarLoop]: Abstraction has 1558 states and 7001 transitions. [2020-01-16 19:11:45,763 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:45,763 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 7001 transitions. [2020-01-16 19:11:45,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:45,765 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:45,765 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:45,765 INFO L426 AbstractCegarLoop]: === Iteration 921 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:45,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:45,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1750104872, now seen corresponding path program 913 times [2020-01-16 19:11:45,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:45,766 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500602999] [2020-01-16 19:11:45,766 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:45,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:46,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:46,277 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500602999] [2020-01-16 19:11:46,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:46,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:46,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102147997] [2020-01-16 19:11:46,277 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:46,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:46,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:46,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:46,277 INFO L87 Difference]: Start difference. First operand 1558 states and 7001 transitions. Second operand 11 states. [2020-01-16 19:11:46,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:46,446 INFO L93 Difference]: Finished difference Result 2908 states and 11528 transitions. [2020-01-16 19:11:46,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:46,447 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:46,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:46,454 INFO L225 Difference]: With dead ends: 2908 [2020-01-16 19:11:46,454 INFO L226 Difference]: Without dead ends: 2893 [2020-01-16 19:11:46,455 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:46,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2893 states. [2020-01-16 19:11:46,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2893 to 1576. [2020-01-16 19:11:46,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 19:11:46,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7057 transitions. [2020-01-16 19:11:46,521 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7057 transitions. Word has length 28 [2020-01-16 19:11:46,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:46,522 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7057 transitions. [2020-01-16 19:11:46,522 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:46,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7057 transitions. [2020-01-16 19:11:46,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:46,524 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:46,524 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:46,524 INFO L426 AbstractCegarLoop]: === Iteration 922 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:46,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:46,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1055457428, now seen corresponding path program 914 times [2020-01-16 19:11:46,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:46,524 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851245999] [2020-01-16 19:11:46,525 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:46,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:47,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:47,041 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851245999] [2020-01-16 19:11:47,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:47,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:47,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254794848] [2020-01-16 19:11:47,041 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:47,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:47,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:47,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:47,042 INFO L87 Difference]: Start difference. First operand 1576 states and 7057 transitions. Second operand 11 states. [2020-01-16 19:11:47,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:47,215 INFO L93 Difference]: Finished difference Result 2913 states and 11532 transitions. [2020-01-16 19:11:47,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:47,215 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:47,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:47,222 INFO L225 Difference]: With dead ends: 2913 [2020-01-16 19:11:47,223 INFO L226 Difference]: Without dead ends: 2887 [2020-01-16 19:11:47,223 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:47,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2887 states. [2020-01-16 19:11:47,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2887 to 1570. [2020-01-16 19:11:47,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 19:11:47,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7040 transitions. [2020-01-16 19:11:47,288 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7040 transitions. Word has length 28 [2020-01-16 19:11:47,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:47,289 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7040 transitions. [2020-01-16 19:11:47,289 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:47,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7040 transitions. [2020-01-16 19:11:47,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:47,291 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:47,291 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:47,291 INFO L426 AbstractCegarLoop]: === Iteration 923 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:47,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:47,291 INFO L82 PathProgramCache]: Analyzing trace with hash -933921466, now seen corresponding path program 915 times [2020-01-16 19:11:47,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:47,292 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805291258] [2020-01-16 19:11:47,292 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:47,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:47,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:47,803 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805291258] [2020-01-16 19:11:47,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:47,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:47,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110897095] [2020-01-16 19:11:47,803 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:47,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:47,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:47,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:47,804 INFO L87 Difference]: Start difference. First operand 1570 states and 7040 transitions. Second operand 11 states. [2020-01-16 19:11:47,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:47,992 INFO L93 Difference]: Finished difference Result 2905 states and 11517 transitions. [2020-01-16 19:11:47,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:47,993 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:47,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:48,000 INFO L225 Difference]: With dead ends: 2905 [2020-01-16 19:11:48,000 INFO L226 Difference]: Without dead ends: 2890 [2020-01-16 19:11:48,000 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:48,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2890 states. [2020-01-16 19:11:48,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2890 to 1575. [2020-01-16 19:11:48,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 19:11:48,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7049 transitions. [2020-01-16 19:11:48,068 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7049 transitions. Word has length 28 [2020-01-16 19:11:48,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:48,068 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7049 transitions. [2020-01-16 19:11:48,068 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:48,068 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7049 transitions. [2020-01-16 19:11:48,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:48,070 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:48,070 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:48,070 INFO L426 AbstractCegarLoop]: === Iteration 924 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:48,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:48,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1300186028, now seen corresponding path program 916 times [2020-01-16 19:11:48,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:48,071 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023223761] [2020-01-16 19:11:48,071 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:48,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:48,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:48,594 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023223761] [2020-01-16 19:11:48,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:48,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:48,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256297314] [2020-01-16 19:11:48,594 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:48,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:48,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:48,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:48,594 INFO L87 Difference]: Start difference. First operand 1575 states and 7049 transitions. Second operand 11 states. [2020-01-16 19:11:48,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:48,768 INFO L93 Difference]: Finished difference Result 2908 states and 11518 transitions. [2020-01-16 19:11:48,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:48,768 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:48,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:48,776 INFO L225 Difference]: With dead ends: 2908 [2020-01-16 19:11:48,776 INFO L226 Difference]: Without dead ends: 2885 [2020-01-16 19:11:48,776 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:48,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2885 states. [2020-01-16 19:11:48,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2885 to 1570. [2020-01-16 19:11:48,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 19:11:48,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7035 transitions. [2020-01-16 19:11:48,843 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7035 transitions. Word has length 28 [2020-01-16 19:11:48,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:48,844 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7035 transitions. [2020-01-16 19:11:48,844 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:48,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7035 transitions. [2020-01-16 19:11:48,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:48,846 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:48,846 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:48,846 INFO L426 AbstractCegarLoop]: === Iteration 925 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:48,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:48,846 INFO L82 PathProgramCache]: Analyzing trace with hash -517601850, now seen corresponding path program 917 times [2020-01-16 19:11:48,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:48,846 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032639485] [2020-01-16 19:11:48,846 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:48,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:49,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:49,380 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032639485] [2020-01-16 19:11:49,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:49,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:49,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308758195] [2020-01-16 19:11:49,381 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:49,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:49,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:49,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:49,381 INFO L87 Difference]: Start difference. First operand 1570 states and 7035 transitions. Second operand 11 states. [2020-01-16 19:11:49,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:49,528 INFO L93 Difference]: Finished difference Result 2920 states and 11542 transitions. [2020-01-16 19:11:49,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:49,529 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:49,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:49,536 INFO L225 Difference]: With dead ends: 2920 [2020-01-16 19:11:49,536 INFO L226 Difference]: Without dead ends: 2900 [2020-01-16 19:11:49,536 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:49,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2900 states. [2020-01-16 19:11:49,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2900 to 1580. [2020-01-16 19:11:49,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 19:11:49,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7052 transitions. [2020-01-16 19:11:49,602 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7052 transitions. Word has length 28 [2020-01-16 19:11:49,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:49,603 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7052 transitions. [2020-01-16 19:11:49,603 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:49,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7052 transitions. [2020-01-16 19:11:49,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:49,605 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:49,605 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:49,605 INFO L426 AbstractCegarLoop]: === Iteration 926 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:49,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:49,605 INFO L82 PathProgramCache]: Analyzing trace with hash 227100648, now seen corresponding path program 918 times [2020-01-16 19:11:49,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:49,605 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204225595] [2020-01-16 19:11:49,606 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:49,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:50,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:50,141 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204225595] [2020-01-16 19:11:50,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:50,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:50,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670921615] [2020-01-16 19:11:50,141 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:50,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:50,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:50,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:50,142 INFO L87 Difference]: Start difference. First operand 1580 states and 7052 transitions. Second operand 11 states. [2020-01-16 19:11:50,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:50,360 INFO L93 Difference]: Finished difference Result 2918 states and 11530 transitions. [2020-01-16 19:11:50,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:50,360 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:50,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:50,367 INFO L225 Difference]: With dead ends: 2918 [2020-01-16 19:11:50,367 INFO L226 Difference]: Without dead ends: 2883 [2020-01-16 19:11:50,367 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:50,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2883 states. [2020-01-16 19:11:50,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2883 to 1563. [2020-01-16 19:11:50,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 19:11:50,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7017 transitions. [2020-01-16 19:11:50,433 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7017 transitions. Word has length 28 [2020-01-16 19:11:50,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:50,433 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7017 transitions. [2020-01-16 19:11:50,433 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:50,434 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7017 transitions. [2020-01-16 19:11:50,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:50,436 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:50,436 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:50,436 INFO L426 AbstractCegarLoop]: === Iteration 927 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:50,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:50,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1034184220, now seen corresponding path program 919 times [2020-01-16 19:11:50,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:50,436 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182226719] [2020-01-16 19:11:50,436 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:50,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:50,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:50,938 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182226719] [2020-01-16 19:11:50,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:50,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:50,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074510973] [2020-01-16 19:11:50,939 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:50,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:50,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:50,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:50,939 INFO L87 Difference]: Start difference. First operand 1563 states and 7017 transitions. Second operand 11 states. [2020-01-16 19:11:51,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:51,117 INFO L93 Difference]: Finished difference Result 2892 states and 11481 transitions. [2020-01-16 19:11:51,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:51,118 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:51,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:51,124 INFO L225 Difference]: With dead ends: 2892 [2020-01-16 19:11:51,125 INFO L226 Difference]: Without dead ends: 2877 [2020-01-16 19:11:51,125 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:51,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2877 states. [2020-01-16 19:11:51,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2877 to 1573. [2020-01-16 19:11:51,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 19:11:51,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7042 transitions. [2020-01-16 19:11:51,193 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7042 transitions. Word has length 28 [2020-01-16 19:11:51,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:51,193 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7042 transitions. [2020-01-16 19:11:51,193 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:51,193 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7042 transitions. [2020-01-16 19:11:51,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:51,196 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:51,196 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:51,196 INFO L426 AbstractCegarLoop]: === Iteration 928 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:51,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:51,196 INFO L82 PathProgramCache]: Analyzing trace with hash 455220776, now seen corresponding path program 920 times [2020-01-16 19:11:51,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:51,196 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510257348] [2020-01-16 19:11:51,196 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:51,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:51,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:51,726 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510257348] [2020-01-16 19:11:51,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:51,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:51,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112908097] [2020-01-16 19:11:51,726 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:51,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:51,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:51,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:51,727 INFO L87 Difference]: Start difference. First operand 1573 states and 7042 transitions. Second operand 11 states. [2020-01-16 19:11:51,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:51,863 INFO L93 Difference]: Finished difference Result 2897 states and 11485 transitions. [2020-01-16 19:11:51,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:51,863 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:51,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:51,870 INFO L225 Difference]: With dead ends: 2897 [2020-01-16 19:11:51,870 INFO L226 Difference]: Without dead ends: 2871 [2020-01-16 19:11:51,870 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:51,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2871 states. [2020-01-16 19:11:51,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2871 to 1567. [2020-01-16 19:11:51,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 19:11:51,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7027 transitions. [2020-01-16 19:11:51,938 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7027 transitions. Word has length 28 [2020-01-16 19:11:51,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:51,939 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7027 transitions. [2020-01-16 19:11:51,939 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:51,939 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7027 transitions. [2020-01-16 19:11:51,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:51,941 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:51,941 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:51,941 INFO L426 AbstractCegarLoop]: === Iteration 929 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:51,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:51,941 INFO L82 PathProgramCache]: Analyzing trace with hash 133429096, now seen corresponding path program 921 times [2020-01-16 19:11:51,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:51,942 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428894640] [2020-01-16 19:11:51,942 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:51,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:52,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:52,435 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428894640] [2020-01-16 19:11:52,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:52,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:52,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285963091] [2020-01-16 19:11:52,435 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:52,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:52,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:52,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:52,436 INFO L87 Difference]: Start difference. First operand 1567 states and 7027 transitions. Second operand 11 states. [2020-01-16 19:11:52,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:52,599 INFO L93 Difference]: Finished difference Result 2882 states and 11456 transitions. [2020-01-16 19:11:52,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:52,599 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:52,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:52,606 INFO L225 Difference]: With dead ends: 2882 [2020-01-16 19:11:52,606 INFO L226 Difference]: Without dead ends: 2867 [2020-01-16 19:11:52,606 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:52,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2867 states. [2020-01-16 19:11:52,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2867 to 1570. [2020-01-16 19:11:52,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 19:11:52,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7032 transitions. [2020-01-16 19:11:52,674 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7032 transitions. Word has length 28 [2020-01-16 19:11:52,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:52,674 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7032 transitions. [2020-01-16 19:11:52,674 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:52,674 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7032 transitions. [2020-01-16 19:11:52,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:52,676 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:52,676 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:52,677 INFO L426 AbstractCegarLoop]: === Iteration 930 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:52,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:52,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1213701660, now seen corresponding path program 922 times [2020-01-16 19:11:52,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:52,677 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223487766] [2020-01-16 19:11:52,677 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:52,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:53,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:53,140 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223487766] [2020-01-16 19:11:53,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:53,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:53,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326377487] [2020-01-16 19:11:53,140 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:53,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:53,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:53,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:53,141 INFO L87 Difference]: Start difference. First operand 1570 states and 7032 transitions. Second operand 11 states. [2020-01-16 19:11:53,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:53,308 INFO L93 Difference]: Finished difference Result 2880 states and 11449 transitions. [2020-01-16 19:11:53,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:53,309 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:53,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:53,316 INFO L225 Difference]: With dead ends: 2880 [2020-01-16 19:11:53,316 INFO L226 Difference]: Without dead ends: 2864 [2020-01-16 19:11:53,316 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:53,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2864 states. [2020-01-16 19:11:53,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2864 to 1567. [2020-01-16 19:11:53,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 19:11:53,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7024 transitions. [2020-01-16 19:11:53,378 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7024 transitions. Word has length 28 [2020-01-16 19:11:53,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:53,378 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7024 transitions. [2020-01-16 19:11:53,378 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:53,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7024 transitions. [2020-01-16 19:11:53,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:53,380 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:53,380 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:53,380 INFO L426 AbstractCegarLoop]: === Iteration 931 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:53,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:53,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1643840300, now seen corresponding path program 923 times [2020-01-16 19:11:53,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:53,381 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969865058] [2020-01-16 19:11:53,381 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:53,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:53,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:53,851 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969865058] [2020-01-16 19:11:53,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:53,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:53,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769457489] [2020-01-16 19:11:53,851 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:53,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:53,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:53,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:53,852 INFO L87 Difference]: Start difference. First operand 1567 states and 7024 transitions. Second operand 11 states. [2020-01-16 19:11:53,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:53,976 INFO L93 Difference]: Finished difference Result 2893 states and 11473 transitions. [2020-01-16 19:11:53,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:53,977 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:53,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:53,983 INFO L225 Difference]: With dead ends: 2893 [2020-01-16 19:11:53,984 INFO L226 Difference]: Without dead ends: 2873 [2020-01-16 19:11:53,984 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:54,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2873 states. [2020-01-16 19:11:54,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2873 to 1571. [2020-01-16 19:11:54,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:11:54,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7030 transitions. [2020-01-16 19:11:54,046 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7030 transitions. Word has length 28 [2020-01-16 19:11:54,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:54,047 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7030 transitions. [2020-01-16 19:11:54,047 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:54,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7030 transitions. [2020-01-16 19:11:54,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:54,049 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:54,049 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:54,049 INFO L426 AbstractCegarLoop]: === Iteration 932 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:54,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:54,049 INFO L82 PathProgramCache]: Analyzing trace with hash -119610072, now seen corresponding path program 924 times [2020-01-16 19:11:54,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:54,049 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647355580] [2020-01-16 19:11:54,049 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:54,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:54,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:54,517 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647355580] [2020-01-16 19:11:54,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:54,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:54,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193223987] [2020-01-16 19:11:54,517 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:54,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:54,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:54,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:54,518 INFO L87 Difference]: Start difference. First operand 1571 states and 7030 transitions. Second operand 11 states. [2020-01-16 19:11:54,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:54,681 INFO L93 Difference]: Finished difference Result 2886 states and 11456 transitions. [2020-01-16 19:11:54,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:54,681 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:54,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:54,687 INFO L225 Difference]: With dead ends: 2886 [2020-01-16 19:11:54,687 INFO L226 Difference]: Without dead ends: 2865 [2020-01-16 19:11:54,688 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:54,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2865 states. [2020-01-16 19:11:54,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2865 to 1563. [2020-01-16 19:11:54,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 19:11:54,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7013 transitions. [2020-01-16 19:11:54,750 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7013 transitions. Word has length 28 [2020-01-16 19:11:54,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:54,750 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7013 transitions. [2020-01-16 19:11:54,750 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:54,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7013 transitions. [2020-01-16 19:11:54,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:54,752 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:54,752 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:54,753 INFO L426 AbstractCegarLoop]: === Iteration 933 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:54,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:54,753 INFO L82 PathProgramCache]: Analyzing trace with hash 902352962, now seen corresponding path program 925 times [2020-01-16 19:11:54,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:54,753 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590008561] [2020-01-16 19:11:54,753 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:54,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:55,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:55,217 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590008561] [2020-01-16 19:11:55,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:55,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:55,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269466114] [2020-01-16 19:11:55,218 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:55,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:55,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:55,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:55,218 INFO L87 Difference]: Start difference. First operand 1563 states and 7013 transitions. Second operand 11 states. [2020-01-16 19:11:55,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:55,404 INFO L93 Difference]: Finished difference Result 2884 states and 11462 transitions. [2020-01-16 19:11:55,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:55,405 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:55,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:55,412 INFO L225 Difference]: With dead ends: 2884 [2020-01-16 19:11:55,412 INFO L226 Difference]: Without dead ends: 2869 [2020-01-16 19:11:55,412 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:55,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2869 states. [2020-01-16 19:11:55,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2869 to 1571. [2020-01-16 19:11:55,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:11:55,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7033 transitions. [2020-01-16 19:11:55,474 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7033 transitions. Word has length 28 [2020-01-16 19:11:55,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:55,475 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7033 transitions. [2020-01-16 19:11:55,475 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:55,475 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7033 transitions. [2020-01-16 19:11:55,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:55,477 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:55,477 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:55,477 INFO L426 AbstractCegarLoop]: === Iteration 934 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:55,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:55,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1158506840, now seen corresponding path program 926 times [2020-01-16 19:11:55,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:55,477 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707635596] [2020-01-16 19:11:55,477 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:55,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:55,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:55,942 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707635596] [2020-01-16 19:11:55,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:55,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:55,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405798339] [2020-01-16 19:11:55,942 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:55,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:55,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:55,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:55,942 INFO L87 Difference]: Start difference. First operand 1571 states and 7033 transitions. Second operand 11 states. [2020-01-16 19:11:56,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:56,108 INFO L93 Difference]: Finished difference Result 2887 states and 11463 transitions. [2020-01-16 19:11:56,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:56,108 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:56,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:56,114 INFO L225 Difference]: With dead ends: 2887 [2020-01-16 19:11:56,115 INFO L226 Difference]: Without dead ends: 2864 [2020-01-16 19:11:56,115 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:56,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2864 states. [2020-01-16 19:11:56,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2864 to 1566. [2020-01-16 19:11:56,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1566 states. [2020-01-16 19:11:56,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 7021 transitions. [2020-01-16 19:11:56,177 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 7021 transitions. Word has length 28 [2020-01-16 19:11:56,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:56,177 INFO L478 AbstractCegarLoop]: Abstraction has 1566 states and 7021 transitions. [2020-01-16 19:11:56,177 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:56,177 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 7021 transitions. [2020-01-16 19:11:56,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:56,179 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:56,180 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:56,180 INFO L426 AbstractCegarLoop]: === Iteration 935 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:56,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:56,180 INFO L82 PathProgramCache]: Analyzing trace with hash 2059463174, now seen corresponding path program 927 times [2020-01-16 19:11:56,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:56,180 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282074525] [2020-01-16 19:11:56,180 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:56,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:56,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:56,650 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282074525] [2020-01-16 19:11:56,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:56,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:56,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930370316] [2020-01-16 19:11:56,650 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:56,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:56,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:56,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:56,651 INFO L87 Difference]: Start difference. First operand 1566 states and 7021 transitions. Second operand 11 states. [2020-01-16 19:11:56,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:56,815 INFO L93 Difference]: Finished difference Result 2877 states and 11443 transitions. [2020-01-16 19:11:56,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:56,815 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:56,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:56,822 INFO L225 Difference]: With dead ends: 2877 [2020-01-16 19:11:56,822 INFO L226 Difference]: Without dead ends: 2862 [2020-01-16 19:11:56,822 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:56,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2862 states. [2020-01-16 19:11:56,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2862 to 1569. [2020-01-16 19:11:56,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 19:11:56,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7026 transitions. [2020-01-16 19:11:56,885 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7026 transitions. Word has length 28 [2020-01-16 19:11:56,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:56,885 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7026 transitions. [2020-01-16 19:11:56,885 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:56,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7026 transitions. [2020-01-16 19:11:56,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:56,887 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:56,887 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:56,888 INFO L426 AbstractCegarLoop]: === Iteration 936 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:56,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:56,888 INFO L82 PathProgramCache]: Analyzing trace with hash 712332418, now seen corresponding path program 928 times [2020-01-16 19:11:56,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:56,888 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202917030] [2020-01-16 19:11:56,888 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:56,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:57,379 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 19:11:57,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:57,384 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202917030] [2020-01-16 19:11:57,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:57,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:57,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102802245] [2020-01-16 19:11:57,385 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:57,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:57,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:57,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:57,385 INFO L87 Difference]: Start difference. First operand 1569 states and 7026 transitions. Second operand 11 states. [2020-01-16 19:11:57,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:57,570 INFO L93 Difference]: Finished difference Result 2875 states and 11436 transitions. [2020-01-16 19:11:57,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:57,570 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:57,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:57,577 INFO L225 Difference]: With dead ends: 2875 [2020-01-16 19:11:57,577 INFO L226 Difference]: Without dead ends: 2859 [2020-01-16 19:11:57,578 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:57,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2859 states. [2020-01-16 19:11:57,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2859 to 1566. [2020-01-16 19:11:57,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1566 states. [2020-01-16 19:11:57,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 7018 transitions. [2020-01-16 19:11:57,641 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 7018 transitions. Word has length 28 [2020-01-16 19:11:57,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:57,641 INFO L478 AbstractCegarLoop]: Abstraction has 1566 states and 7018 transitions. [2020-01-16 19:11:57,641 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:57,641 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 7018 transitions. [2020-01-16 19:11:57,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:57,643 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:57,643 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:57,643 INFO L426 AbstractCegarLoop]: === Iteration 937 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:57,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:57,643 INFO L82 PathProgramCache]: Analyzing trace with hash 30112684, now seen corresponding path program 929 times [2020-01-16 19:11:57,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:57,644 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914846680] [2020-01-16 19:11:57,644 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:57,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:58,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:58,100 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914846680] [2020-01-16 19:11:58,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:58,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:58,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041300028] [2020-01-16 19:11:58,100 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:58,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:58,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:58,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:58,101 INFO L87 Difference]: Start difference. First operand 1566 states and 7018 transitions. Second operand 11 states. [2020-01-16 19:11:58,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:58,261 INFO L93 Difference]: Finished difference Result 2883 states and 11452 transitions. [2020-01-16 19:11:58,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:58,262 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:58,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:58,268 INFO L225 Difference]: With dead ends: 2883 [2020-01-16 19:11:58,268 INFO L226 Difference]: Without dead ends: 2865 [2020-01-16 19:11:58,268 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:58,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2865 states. [2020-01-16 19:11:58,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2865 to 1569. [2020-01-16 19:11:58,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 19:11:58,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7023 transitions. [2020-01-16 19:11:58,331 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7023 transitions. Word has length 28 [2020-01-16 19:11:58,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:58,331 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7023 transitions. [2020-01-16 19:11:58,332 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:58,332 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7023 transitions. [2020-01-16 19:11:58,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:58,334 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:58,334 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:58,334 INFO L426 AbstractCegarLoop]: === Iteration 938 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:58,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:58,334 INFO L82 PathProgramCache]: Analyzing trace with hash 205986152, now seen corresponding path program 930 times [2020-01-16 19:11:58,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:58,334 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848168436] [2020-01-16 19:11:58,334 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:58,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:58,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:58,793 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848168436] [2020-01-16 19:11:58,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:58,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:58,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859229747] [2020-01-16 19:11:58,793 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:58,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:58,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:58,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:58,794 INFO L87 Difference]: Start difference. First operand 1569 states and 7023 transitions. Second operand 11 states. [2020-01-16 19:11:58,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:58,971 INFO L93 Difference]: Finished difference Result 2878 states and 11439 transitions. [2020-01-16 19:11:58,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:58,971 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:58,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:58,978 INFO L225 Difference]: With dead ends: 2878 [2020-01-16 19:11:58,978 INFO L226 Difference]: Without dead ends: 2859 [2020-01-16 19:11:58,978 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:59,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2859 states. [2020-01-16 19:11:59,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2859 to 1563. [2020-01-16 19:11:59,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 19:11:59,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7010 transitions. [2020-01-16 19:11:59,040 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7010 transitions. Word has length 28 [2020-01-16 19:11:59,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:59,040 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7010 transitions. [2020-01-16 19:11:59,040 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:59,040 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7010 transitions. [2020-01-16 19:11:59,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:59,042 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:59,042 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:59,042 INFO L426 AbstractCegarLoop]: === Iteration 939 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:59,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:59,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1969865026, now seen corresponding path program 931 times [2020-01-16 19:11:59,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:59,043 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633597310] [2020-01-16 19:11:59,043 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:59,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:11:59,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:11:59,526 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633597310] [2020-01-16 19:11:59,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:11:59,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:11:59,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771080305] [2020-01-16 19:11:59,527 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:11:59,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:11:59,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:11:59,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:11:59,527 INFO L87 Difference]: Start difference. First operand 1563 states and 7010 transitions. Second operand 11 states. [2020-01-16 19:11:59,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:11:59,657 INFO L93 Difference]: Finished difference Result 2912 states and 11517 transitions. [2020-01-16 19:11:59,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:11:59,658 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:11:59,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:11:59,665 INFO L225 Difference]: With dead ends: 2912 [2020-01-16 19:11:59,665 INFO L226 Difference]: Without dead ends: 2892 [2020-01-16 19:11:59,665 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:11:59,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2892 states. [2020-01-16 19:11:59,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2892 to 1578. [2020-01-16 19:11:59,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 19:11:59,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7043 transitions. [2020-01-16 19:11:59,728 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7043 transitions. Word has length 28 [2020-01-16 19:11:59,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:11:59,728 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7043 transitions. [2020-01-16 19:11:59,728 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:11:59,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7043 transitions. [2020-01-16 19:11:59,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:11:59,730 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:11:59,730 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:11:59,730 INFO L426 AbstractCegarLoop]: === Iteration 940 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:11:59,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:11:59,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1580399772, now seen corresponding path program 932 times [2020-01-16 19:11:59,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:11:59,731 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241933932] [2020-01-16 19:11:59,731 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:11:59,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:12:00,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:12:00,211 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241933932] [2020-01-16 19:12:00,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:12:00,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:12:00,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829446090] [2020-01-16 19:12:00,211 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:12:00,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:12:00,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:12:00,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:12:00,212 INFO L87 Difference]: Start difference. First operand 1578 states and 7043 transitions. Second operand 11 states. [2020-01-16 19:12:00,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:12:00,372 INFO L93 Difference]: Finished difference Result 2910 states and 11505 transitions. [2020-01-16 19:12:00,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:12:00,372 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:12:00,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:12:00,379 INFO L225 Difference]: With dead ends: 2910 [2020-01-16 19:12:00,379 INFO L226 Difference]: Without dead ends: 2882 [2020-01-16 19:12:00,379 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:12:00,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2882 states. [2020-01-16 19:12:00,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2882 to 1568. [2020-01-16 19:12:00,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 19:12:00,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7021 transitions. [2020-01-16 19:12:00,442 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7021 transitions. Word has length 28 [2020-01-16 19:12:00,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:12:00,442 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7021 transitions. [2020-01-16 19:12:00,442 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:12:00,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7021 transitions. [2020-01-16 19:12:00,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:12:00,444 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:12:00,444 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:12:00,444 INFO L426 AbstractCegarLoop]: === Iteration 941 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:12:00,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:12:00,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1167992058, now seen corresponding path program 933 times [2020-01-16 19:12:00,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:12:00,444 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547850993] [2020-01-16 19:12:00,445 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:12:00,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:12:00,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:12:00,915 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547850993] [2020-01-16 19:12:00,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:12:00,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:12:00,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691885016] [2020-01-16 19:12:00,916 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:12:00,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:12:00,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:12:00,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:12:00,916 INFO L87 Difference]: Start difference. First operand 1568 states and 7021 transitions. Second operand 11 states. [2020-01-16 19:12:01,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:12:01,048 INFO L93 Difference]: Finished difference Result 2901 states and 11486 transitions. [2020-01-16 19:12:01,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:12:01,049 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:12:01,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:12:01,056 INFO L225 Difference]: With dead ends: 2901 [2020-01-16 19:12:01,056 INFO L226 Difference]: Without dead ends: 2881 [2020-01-16 19:12:01,056 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:12:01,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2881 states. [2020-01-16 19:12:01,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2881 to 1572. [2020-01-16 19:12:01,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 19:12:01,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7027 transitions. [2020-01-16 19:12:01,119 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7027 transitions. Word has length 28 [2020-01-16 19:12:01,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:12:01,119 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7027 transitions. [2020-01-16 19:12:01,119 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:12:01,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7027 transitions. [2020-01-16 19:12:01,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:12:01,121 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:12:01,121 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:12:01,121 INFO L426 AbstractCegarLoop]: === Iteration 942 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:12:01,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:12:01,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1363524866, now seen corresponding path program 934 times [2020-01-16 19:12:01,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:12:01,122 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921392213] [2020-01-16 19:12:01,122 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:12:01,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:12:01,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:12:01,586 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921392213] [2020-01-16 19:12:01,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:12:01,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:12:01,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252782882] [2020-01-16 19:12:01,586 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:12:01,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:12:01,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:12:01,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:12:01,587 INFO L87 Difference]: Start difference. First operand 1572 states and 7027 transitions. Second operand 11 states. [2020-01-16 19:12:01,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:12:01,769 INFO L93 Difference]: Finished difference Result 2894 states and 11469 transitions. [2020-01-16 19:12:01,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:12:01,770 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:12:01,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:12:01,777 INFO L225 Difference]: With dead ends: 2894 [2020-01-16 19:12:01,777 INFO L226 Difference]: Without dead ends: 2877 [2020-01-16 19:12:01,777 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:12:01,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2877 states. [2020-01-16 19:12:01,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2877 to 1568. [2020-01-16 19:12:01,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 19:12:01,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7017 transitions. [2020-01-16 19:12:01,839 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7017 transitions. Word has length 28 [2020-01-16 19:12:01,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:12:01,839 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7017 transitions. [2020-01-16 19:12:01,840 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:12:01,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7017 transitions. [2020-01-16 19:12:01,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:12:01,842 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:12:01,842 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:12:01,842 INFO L426 AbstractCegarLoop]: === Iteration 943 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:12:01,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:12:01,842 INFO L82 PathProgramCache]: Analyzing trace with hash -412786456, now seen corresponding path program 935 times [2020-01-16 19:12:01,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:12:01,842 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076376604] [2020-01-16 19:12:01,842 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:12:01,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:12:02,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:12:02,304 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076376604] [2020-01-16 19:12:02,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:12:02,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:12:02,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531058650] [2020-01-16 19:12:02,304 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:12:02,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:12:02,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:12:02,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:12:02,305 INFO L87 Difference]: Start difference. First operand 1568 states and 7017 transitions. Second operand 11 states. [2020-01-16 19:12:02,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:12:02,474 INFO L93 Difference]: Finished difference Result 2896 states and 11474 transitions. [2020-01-16 19:12:02,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:12:02,475 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:12:02,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:12:02,481 INFO L225 Difference]: With dead ends: 2896 [2020-01-16 19:12:02,482 INFO L226 Difference]: Without dead ends: 2878 [2020-01-16 19:12:02,482 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:12:02,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2878 states. [2020-01-16 19:12:02,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2878 to 1571. [2020-01-16 19:12:02,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:12:02,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7022 transitions. [2020-01-16 19:12:02,544 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7022 transitions. Word has length 28 [2020-01-16 19:12:02,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:12:02,545 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7022 transitions. [2020-01-16 19:12:02,545 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:12:02,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7022 transitions. [2020-01-16 19:12:02,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:12:02,547 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:12:02,547 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:12:02,547 INFO L426 AbstractCegarLoop]: === Iteration 944 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:12:02,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:12:02,547 INFO L82 PathProgramCache]: Analyzing trace with hash -236912988, now seen corresponding path program 936 times [2020-01-16 19:12:02,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:12:02,547 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547831969] [2020-01-16 19:12:02,547 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:12:02,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:12:03,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:12:03,014 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547831969] [2020-01-16 19:12:03,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:12:03,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:12:03,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356058036] [2020-01-16 19:12:03,014 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:12:03,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:12:03,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:12:03,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:12:03,014 INFO L87 Difference]: Start difference. First operand 1571 states and 7022 transitions. Second operand 11 states. [2020-01-16 19:12:03,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:12:03,229 INFO L93 Difference]: Finished difference Result 2891 states and 11461 transitions. [2020-01-16 19:12:03,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:12:03,229 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:12:03,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:12:03,237 INFO L225 Difference]: With dead ends: 2891 [2020-01-16 19:12:03,237 INFO L226 Difference]: Without dead ends: 2865 [2020-01-16 19:12:03,237 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:12:03,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2865 states. [2020-01-16 19:12:03,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2865 to 1558. [2020-01-16 19:12:03,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1558 states. [2020-01-16 19:12:03,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 6996 transitions. [2020-01-16 19:12:03,299 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 6996 transitions. Word has length 28 [2020-01-16 19:12:03,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:12:03,299 INFO L478 AbstractCegarLoop]: Abstraction has 1558 states and 6996 transitions. [2020-01-16 19:12:03,299 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:12:03,299 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 6996 transitions. [2020-01-16 19:12:03,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:12:03,301 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:12:03,301 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:12:03,302 INFO L426 AbstractCegarLoop]: === Iteration 945 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:12:03,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:12:03,302 INFO L82 PathProgramCache]: Analyzing trace with hash -286108470, now seen corresponding path program 937 times [2020-01-16 19:12:03,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:12:03,302 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150575457] [2020-01-16 19:12:03,302 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:12:03,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:12:03,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:12:03,790 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150575457] [2020-01-16 19:12:03,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:12:03,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:12:03,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936356397] [2020-01-16 19:12:03,791 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:12:03,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:12:03,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:12:03,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:12:03,791 INFO L87 Difference]: Start difference. First operand 1558 states and 6996 transitions. Second operand 11 states. [2020-01-16 19:12:04,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:12:04,029 INFO L93 Difference]: Finished difference Result 2919 states and 11554 transitions. [2020-01-16 19:12:04,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:12:04,029 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:12:04,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:12:04,036 INFO L225 Difference]: With dead ends: 2919 [2020-01-16 19:12:04,036 INFO L226 Difference]: Without dead ends: 2903 [2020-01-16 19:12:04,037 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:12:04,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2903 states. [2020-01-16 19:12:04,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2903 to 1578. [2020-01-16 19:12:04,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 19:12:04,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7058 transitions. [2020-01-16 19:12:04,100 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7058 transitions. Word has length 28 [2020-01-16 19:12:04,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:12:04,100 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7058 transitions. [2020-01-16 19:12:04,100 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:12:04,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7058 transitions. [2020-01-16 19:12:04,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:12:04,102 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:12:04,103 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:12:04,103 INFO L426 AbstractCegarLoop]: === Iteration 946 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:12:04,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:12:04,103 INFO L82 PathProgramCache]: Analyzing trace with hash 458594028, now seen corresponding path program 938 times [2020-01-16 19:12:04,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:12:04,103 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574959561] [2020-01-16 19:12:04,103 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:12:04,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:12:04,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:12:04,607 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574959561] [2020-01-16 19:12:04,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:12:04,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:12:04,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864201837] [2020-01-16 19:12:04,608 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:12:04,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:12:04,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:12:04,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:12:04,608 INFO L87 Difference]: Start difference. First operand 1578 states and 7058 transitions. Second operand 11 states. [2020-01-16 19:12:04,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:12:04,753 INFO L93 Difference]: Finished difference Result 2923 states and 11555 transitions. [2020-01-16 19:12:04,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:12:04,754 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:12:04,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:12:04,760 INFO L225 Difference]: With dead ends: 2923 [2020-01-16 19:12:04,760 INFO L226 Difference]: Without dead ends: 2896 [2020-01-16 19:12:04,760 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:12:04,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2896 states. [2020-01-16 19:12:04,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2896 to 1571. [2020-01-16 19:12:04,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 19:12:04,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7038 transitions. [2020-01-16 19:12:04,824 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7038 transitions. Word has length 28 [2020-01-16 19:12:04,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:12:04,824 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7038 transitions. [2020-01-16 19:12:04,824 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:12:04,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7038 transitions. [2020-01-16 19:12:04,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:12:04,826 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:12:04,826 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:12:04,826 INFO L426 AbstractCegarLoop]: === Iteration 947 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:12:04,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:12:04,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1324832488, now seen corresponding path program 939 times [2020-01-16 19:12:04,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:12:04,826 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686119449] [2020-01-16 19:12:04,826 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:12:04,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 19:12:05,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 19:12:05,310 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686119449] [2020-01-16 19:12:05,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 19:12:05,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 19:12:05,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654538602] [2020-01-16 19:12:05,310 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 19:12:05,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 19:12:05,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 19:12:05,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 19:12:05,310 INFO L87 Difference]: Start difference. First operand 1571 states and 7038 transitions. Second operand 11 states. [2020-01-16 19:12:05,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 19:12:05,484 INFO L93 Difference]: Finished difference Result 2916 states and 11542 transitions. [2020-01-16 19:12:05,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 19:12:05,484 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 19:12:05,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 19:12:05,490 INFO L225 Difference]: With dead ends: 2916 [2020-01-16 19:12:05,491 INFO L226 Difference]: Without dead ends: 2900 [2020-01-16 19:12:05,491 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 19:12:05,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2900 states. [2020-01-16 19:12:05,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2900 to 1577. [2020-01-16 19:12:05,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 19:12:05,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7049 transitions. [2020-01-16 19:12:05,554 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7049 transitions. Word has length 28 [2020-01-16 19:12:05,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 19:12:05,554 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7049 transitions. [2020-01-16 19:12:05,554 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 19:12:05,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7049 transitions. [2020-01-16 19:12:05,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 19:12:05,556 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 19:12:05,556 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 19:12:05,556 INFO L426 AbstractCegarLoop]: === Iteration 948 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-01-16 19:12:05,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 19:12:05,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1480729812, now seen corresponding path program 940 times [2020-01-16 19:12:05,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 19:12:05,556 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071495167] [2020-01-16 19:12:05,557 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 19:12:05,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2020-01-16 19:12:05,659 WARN L209 SmtUtils]: Removed 12 from assertion stack [2020-01-16 19:12:05,660 WARN L543 AbstractCegarLoop]: Verification canceled [2020-01-16 19:12:05,663 WARN L227 ceAbstractionStarter]: Timeout [2020-01-16 19:12:05,663 INFO L202 PluginConnector]: Adding new model example_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.01 07:12:05 BasicIcfg [2020-01-16 19:12:05,663 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-01-16 19:12:05,664 INFO L168 Benchmark]: Toolchain (without parser) took 773973.49 ms. Allocated memory was 145.8 MB in the beginning and 1.8 GB in the end (delta: 1.7 GB). Free memory was 120.9 MB in the beginning and 934.7 MB in the end (delta: -813.9 MB). Peak memory consumption was 848.1 MB. Max. memory is 7.1 GB. [2020-01-16 19:12:05,665 INFO L168 Benchmark]: Boogie PL CUP Parser took 1.31 ms. Allocated memory is still 145.8 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-01-16 19:12:05,665 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.35 ms. Allocated memory is still 145.8 MB. Free memory was 120.7 MB in the beginning and 118.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2020-01-16 19:12:05,665 INFO L168 Benchmark]: Boogie Preprocessor took 22.94 ms. Allocated memory is still 145.8 MB. Free memory was 118.9 MB in the beginning and 117.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2020-01-16 19:12:05,665 INFO L168 Benchmark]: RCFGBuilder took 318.92 ms. Allocated memory is still 145.8 MB. Free memory was 117.8 MB in the beginning and 104.0 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-01-16 19:12:05,666 INFO L168 Benchmark]: TraceAbstraction took 773584.27 ms. Allocated memory was 145.8 MB in the beginning and 1.8 GB in the end (delta: 1.7 GB). Free memory was 103.6 MB in the beginning and 934.7 MB in the end (delta: -831.1 MB). Peak memory consumption was 830.9 MB. Max. memory is 7.1 GB. [2020-01-16 19:12:05,667 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 1.31 ms. Allocated memory is still 145.8 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 36.35 ms. Allocated memory is still 145.8 MB. Free memory was 120.7 MB in the beginning and 118.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 22.94 ms. Allocated memory is still 145.8 MB. Free memory was 118.9 MB in the beginning and 117.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 318.92 ms. Allocated memory is still 145.8 MB. Free memory was 117.8 MB in the beginning and 104.0 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 773584.27 ms. Allocated memory was 145.8 MB in the beginning and 1.8 GB in the end (delta: 1.7 GB). Free memory was 103.6 MB in the beginning and 934.7 MB in the end (delta: -831.1 MB). Peak memory consumption was 830.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.3s, 76 ProgramPointsBefore, 65 ProgramPointsAfterwards, 120 TransitionsBefore, 110 TransitionsAfterwards, 2736 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 9 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 720 VarBasedMoverChecksPositive, 0 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 756 CheckedPairsTotal, 10 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 31]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 31). Cancelled while BasicCegarLoop was analyzing trace of length 29 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 28 for 7ms.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 49 locations, 1 error locations. Started 1 CEGAR loops. Result: TIMEOUT, OverallTime: 773.2s, OverallIterations: 948, TraceHistogramMax: 1, AutomataDifference: 191.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.1s, HoareTripleCheckerStatistics: 115819 SDtfs, 169580 SDslu, 307465 SDs, 0 SdLazy, 83643 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 82.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10353 GetRequests, 955 SyntacticMatches, 0 SemanticMatches, 9398 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6573 ImplicationChecksByTransitivity, 545.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20196occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 70.3s AutomataMinimizationTime, 947 MinimizatonAttempts, 1277179 StatesRemovedByMinimization, 939 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 494.4s InterpolantComputationTime, 26516 NumberOfCodeBlocks, 26516 NumberOfCodeBlocksAsserted, 947 NumberOfCheckSat, 25569 ConstructedInterpolants, 0 QuantifiedInterpolants, 22700682 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 947 InterpolantComputations, 947 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown