/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/concurrent/bpl/mcr/example_9.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.25-abd8500 [2020-01-16 18:02:32,803 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-01-16 18:02:32,806 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-01-16 18:02:32,818 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-01-16 18:02:32,830 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-01-16 18:02:32,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-01-16 18:02:32,832 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-01-16 18:02:32,833 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-01-16 18:02:32,834 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-01-16 18:02:32,835 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-01-16 18:02:32,836 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-01-16 18:02:32,838 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-01-16 18:02:32,840 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-01-16 18:02:32,841 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-01-16 18:02:32,842 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-01-16 18:02:32,843 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-01-16 18:02:32,845 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-01-16 18:02:32,855 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-01-16 18:02:32,870 INFO L113 SettingsManager]: Loading preferences was successful [2020-01-16 18:02:32,870 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-01-16 18:02:32,871 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-01-16 18:02:32,872 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-01-16 18:02:32,872 INFO L138 SettingsManager]: * Use SBE=true [2020-01-16 18:02:32,872 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-01-16 18:02:32,872 INFO L138 SettingsManager]: * sizeof long=4 [2020-01-16 18:02:32,873 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-01-16 18:02:32,874 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-01-16 18:02:32,874 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-01-16 18:02:32,875 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-01-16 18:02:32,875 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-01-16 18:02:32,875 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-01-16 18:02:32,875 INFO L138 SettingsManager]: * sizeof long double=12 [2020-01-16 18:02:32,875 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-01-16 18:02:32,876 INFO L138 SettingsManager]: * Use constant arrays=true [2020-01-16 18:02:32,877 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-01-16 18:02:32,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-01-16 18:02:32,877 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-01-16 18:02:32,877 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-01-16 18:02:32,878 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-01-16 18:02:32,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-01-16 18:02:32,878 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-01-16 18:02:32,878 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-01-16 18:02:32,878 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-01-16 18:02:32,879 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-01-16 18:02:32,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-01-16 18:02:32,879 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-01-16 18:02:32,879 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-01-16 18:02:32,879 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-01-16 18:02:33,152 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-01-16 18:02:33,170 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-01-16 18:02:33,172 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-01-16 18:02:33,173 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2020-01-16 18:02:33,174 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2020-01-16 18:02:33,174 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_9.bpl [2020-01-16 18:02:33,174 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_9.bpl' [2020-01-16 18:02:33,214 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-01-16 18:02:33,216 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-01-16 18:02:33,217 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-01-16 18:02:33,217 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-01-16 18:02:33,217 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-01-16 18:02:33,233 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 06:02:33" (1/1) ... [2020-01-16 18:02:33,245 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 06:02:33" (1/1) ... [2020-01-16 18:02:33,254 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-01-16 18:02:33,256 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-01-16 18:02:33,256 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-01-16 18:02:33,256 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-01-16 18:02:33,267 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 06:02:33" (1/1) ... [2020-01-16 18:02:33,268 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 06:02:33" (1/1) ... [2020-01-16 18:02:33,269 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 06:02:33" (1/1) ... [2020-01-16 18:02:33,270 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 06:02:33" (1/1) ... [2020-01-16 18:02:33,276 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 06:02:33" (1/1) ... [2020-01-16 18:02:33,278 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 06:02:33" (1/1) ... [2020-01-16 18:02:33,279 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 06:02:33" (1/1) ... [2020-01-16 18:02:33,281 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-01-16 18:02:33,282 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-01-16 18:02:33,282 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-01-16 18:02:33,282 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-01-16 18:02:33,284 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:02:33" (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 18:02:33,363 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2020-01-16 18:02:33,363 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2020-01-16 18:02:33,365 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2020-01-16 18:02:33,366 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2020-01-16 18:02:33,366 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2020-01-16 18:02:33,366 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2020-01-16 18:02:33,366 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2020-01-16 18:02:33,370 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2020-01-16 18:02:33,370 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2020-01-16 18:02:33,370 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2020-01-16 18:02:33,370 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2020-01-16 18:02:33,371 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2020-01-16 18:02:33,371 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2020-01-16 18:02:33,371 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2020-01-16 18:02:33,371 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2020-01-16 18:02:33,371 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2020-01-16 18:02:33,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-01-16 18:02:33,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-01-16 18:02:33,372 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2020-01-16 18:02:33,372 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2020-01-16 18:02:33,372 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2020-01-16 18:02:33,373 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2020-01-16 18:02:33,373 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2020-01-16 18:02:33,374 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2020-01-16 18:02:33,374 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2020-01-16 18:02:33,375 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2020-01-16 18:02:33,375 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2020-01-16 18:02:33,376 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_8 given in one single declaration [2020-01-16 18:02:33,377 INFO L130 BoogieDeclarations]: Found specification of procedure set_8 [2020-01-16 18:02:33,377 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8 [2020-01-16 18:02:33,378 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 18:02:33,679 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-01-16 18:02:33,679 INFO L287 CfgBuilder]: Removed 0 assume(true) statements. [2020-01-16 18:02:33,680 INFO L202 PluginConnector]: Adding new model example_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.01 06:02:33 BoogieIcfgContainer [2020-01-16 18:02:33,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-01-16 18:02:33,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-01-16 18:02:33,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-01-16 18:02:33,685 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-01-16 18:02:33,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 06:02:33" (1/2) ... [2020-01-16 18:02:33,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40498062 and model type example_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.01 06:02:33, skipping insertion in model container [2020-01-16 18:02:33,686 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 06:02:33" (2/2) ... [2020-01-16 18:02:33,688 INFO L109 eAbstractionObserver]: Analyzing ICFG example_9.bpl [2020-01-16 18:02:33,698 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-01-16 18:02:33,699 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-01-16 18:02:33,706 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-01-16 18:02:33,707 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-01-16 18:02:33,919 INFO L250 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-01-16 18:02:33,938 INFO L374 AbstractCegarLoop]: Interprodecural is true [2020-01-16 18:02:33,938 INFO L375 AbstractCegarLoop]: Hoare is true [2020-01-16 18:02:33,939 INFO L376 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-01-16 18:02:33,939 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-01-16 18:02:33,939 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-01-16 18:02:33,939 INFO L379 AbstractCegarLoop]: Difference is false [2020-01-16 18:02:33,939 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-01-16 18:02:33,940 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-01-16 18:02:33,957 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 120 transitions [2020-01-16 18:02:33,959 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 76 places, 120 transitions [2020-01-16 18:02:34,952 INFO L129 PetriNetUnfolder]: 1793/2334 cut-off events. [2020-01-16 18:02:34,952 INFO L130 PetriNetUnfolder]: For 2304/2304 co-relation queries the response was YES. [2020-01-16 18:02:35,001 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 18:02:35,056 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 76 places, 120 transitions [2020-01-16 18:02:35,908 INFO L129 PetriNetUnfolder]: 1793/2334 cut-off events. [2020-01-16 18:02:35,909 INFO L130 PetriNetUnfolder]: For 2304/2304 co-relation queries the response was YES. [2020-01-16 18:02:36,026 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 18:02:36,079 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2736 [2020-01-16 18:02:36,081 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-01-16 18:02:36,282 INFO L206 etLargeBlockEncoding]: Checked pairs total: 756 [2020-01-16 18:02:36,283 INFO L214 etLargeBlockEncoding]: Total number of compositions: 10 [2020-01-16 18:02:36,286 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 65 places, 110 transitions [2020-01-16 18:02:38,784 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 20196 states. [2020-01-16 18:02:38,786 INFO L276 IsEmpty]: Start isEmpty. Operand 20196 states. [2020-01-16 18:02:38,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:02:38,942 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:38,943 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 18:02:38,943 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 18:02:38,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:38,954 INFO L82 PathProgramCache]: Analyzing trace with hash 114387570, now seen corresponding path program 1 times [2020-01-16 18:02:38,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:38,964 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204403189] [2020-01-16 18:02:38,965 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:39,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:39,147 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 18:02:39,148 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204403189] [2020-01-16 18:02:39,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:39,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 18:02:39,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504774760] [2020-01-16 18:02:39,156 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 18:02:39,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:39,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 18:02:39,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 18:02:39,175 INFO L87 Difference]: Start difference. First operand 20196 states. Second operand 3 states. [2020-01-16 18:02:40,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:40,384 INFO L93 Difference]: Finished difference Result 18916 states and 109908 transitions. [2020-01-16 18:02:40,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 18:02:40,387 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-01-16 18:02:40,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:40,590 INFO L225 Difference]: With dead ends: 18916 [2020-01-16 18:02:40,590 INFO L226 Difference]: Without dead ends: 18915 [2020-01-16 18:02:40,592 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 18:02:41,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18915 states. [2020-01-16 18:02:41,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18915 to 18915. [2020-01-16 18:02:41,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18915 states. [2020-01-16 18:02:41,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18915 states to 18915 states and 109907 transitions. [2020-01-16 18:02:41,921 INFO L78 Accepts]: Start accepts. Automaton has 18915 states and 109907 transitions. Word has length 28 [2020-01-16 18:02:41,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:41,924 INFO L478 AbstractCegarLoop]: Abstraction has 18915 states and 109907 transitions. [2020-01-16 18:02:41,924 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 18:02:41,924 INFO L276 IsEmpty]: Start isEmpty. Operand 18915 states and 109907 transitions. [2020-01-16 18:02:42,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:02:42,042 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:42,042 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 18:02:42,043 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 18:02:42,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:42,043 INFO L82 PathProgramCache]: Analyzing trace with hash -520253774, now seen corresponding path program 1 times [2020-01-16 18:02:42,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:42,044 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846265362] [2020-01-16 18:02:42,044 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:42,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:42,109 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 18:02:42,110 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846265362] [2020-01-16 18:02:42,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:42,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 18:02:42,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302287145] [2020-01-16 18:02:42,112 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 18:02:42,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:42,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 18:02:42,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 18:02:42,113 INFO L87 Difference]: Start difference. First operand 18915 states and 109907 transitions. Second operand 3 states. [2020-01-16 18:02:42,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:42,575 INFO L93 Difference]: Finished difference Result 15971 states and 88467 transitions. [2020-01-16 18:02:42,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 18:02:42,576 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-01-16 18:02:42,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:42,693 INFO L225 Difference]: With dead ends: 15971 [2020-01-16 18:02:42,694 INFO L226 Difference]: Without dead ends: 15971 [2020-01-16 18:02:42,695 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 18:02:43,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15971 states. [2020-01-16 18:02:44,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15971 to 15971. [2020-01-16 18:02:44,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15971 states. [2020-01-16 18:02:44,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15971 states to 15971 states and 88467 transitions. [2020-01-16 18:02:44,816 INFO L78 Accepts]: Start accepts. Automaton has 15971 states and 88467 transitions. Word has length 28 [2020-01-16 18:02:44,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:44,816 INFO L478 AbstractCegarLoop]: Abstraction has 15971 states and 88467 transitions. [2020-01-16 18:02:44,817 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 18:02:44,817 INFO L276 IsEmpty]: Start isEmpty. Operand 15971 states and 88467 transitions. [2020-01-16 18:02:44,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:02:44,866 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:44,867 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:44,867 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 18:02:44,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:44,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1967135382, now seen corresponding path program 1 times [2020-01-16 18:02:44,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:44,868 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998035486] [2020-01-16 18:02:44,868 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:44,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:44,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:44,894 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998035486] [2020-01-16 18:02:44,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:44,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 18:02:44,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767292356] [2020-01-16 18:02:44,895 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 18:02:44,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:44,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 18:02:44,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 18:02:44,896 INFO L87 Difference]: Start difference. First operand 15971 states and 88467 transitions. Second operand 3 states. [2020-01-16 18:02:44,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:44,989 INFO L93 Difference]: Finished difference Result 10243 states and 54163 transitions. [2020-01-16 18:02:44,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 18:02:44,990 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-01-16 18:02:44,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:45,044 INFO L225 Difference]: With dead ends: 10243 [2020-01-16 18:02:45,044 INFO L226 Difference]: Without dead ends: 10243 [2020-01-16 18:02:45,045 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 18:02:45,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10243 states. [2020-01-16 18:02:45,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10243 to 10243. [2020-01-16 18:02:45,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10243 states. [2020-01-16 18:02:45,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10243 states to 10243 states and 54163 transitions. [2020-01-16 18:02:45,971 INFO L78 Accepts]: Start accepts. Automaton has 10243 states and 54163 transitions. Word has length 28 [2020-01-16 18:02:45,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:45,972 INFO L478 AbstractCegarLoop]: Abstraction has 10243 states and 54163 transitions. [2020-01-16 18:02:45,972 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 18:02:45,973 INFO L276 IsEmpty]: Start isEmpty. Operand 10243 states and 54163 transitions. [2020-01-16 18:02:46,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:02:46,008 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:46,008 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 18:02:46,008 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 18:02:46,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:46,009 INFO L82 PathProgramCache]: Analyzing trace with hash 2067096892, now seen corresponding path program 1 times [2020-01-16 18:02:46,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:46,010 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979497562] [2020-01-16 18:02:46,010 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:46,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:46,069 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 18:02:46,069 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979497562] [2020-01-16 18:02:46,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:46,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 18:02:46,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662114965] [2020-01-16 18:02:46,070 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 18:02:46,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:46,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 18:02:46,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 18:02:46,071 INFO L87 Difference]: Start difference. First operand 10243 states and 54163 transitions. Second operand 3 states. [2020-01-16 18:02:46,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:46,169 INFO L93 Difference]: Finished difference Result 9987 states and 52243 transitions. [2020-01-16 18:02:46,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 18:02:46,169 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-01-16 18:02:46,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:46,211 INFO L225 Difference]: With dead ends: 9987 [2020-01-16 18:02:46,212 INFO L226 Difference]: Without dead ends: 9987 [2020-01-16 18:02:46,212 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 18:02:46,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9987 states. [2020-01-16 18:02:46,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9987 to 9987. [2020-01-16 18:02:46,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9987 states. [2020-01-16 18:02:46,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9987 states to 9987 states and 52243 transitions. [2020-01-16 18:02:46,757 INFO L78 Accepts]: Start accepts. Automaton has 9987 states and 52243 transitions. Word has length 28 [2020-01-16 18:02:46,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:46,757 INFO L478 AbstractCegarLoop]: Abstraction has 9987 states and 52243 transitions. [2020-01-16 18:02:46,758 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 18:02:46,758 INFO L276 IsEmpty]: Start isEmpty. Operand 9987 states and 52243 transitions. [2020-01-16 18:02:46,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:02:46,786 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:46,786 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 18:02:46,787 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 18:02:46,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:46,787 INFO L82 PathProgramCache]: Analyzing trace with hash -77951046, now seen corresponding path program 1 times [2020-01-16 18:02:46,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:46,788 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784378543] [2020-01-16 18:02:46,788 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:46,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:46,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:46,811 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784378543] [2020-01-16 18:02:46,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:46,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 18:02:46,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827135569] [2020-01-16 18:02:46,812 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 18:02:46,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:46,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 18:02:46,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 18:02:46,813 INFO L87 Difference]: Start difference. First operand 9987 states and 52243 transitions. Second operand 3 states. [2020-01-16 18:02:46,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:46,899 INFO L93 Difference]: Finished difference Result 6171 states and 30927 transitions. [2020-01-16 18:02:46,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 18:02:46,900 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-01-16 18:02:46,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:46,933 INFO L225 Difference]: With dead ends: 6171 [2020-01-16 18:02:46,933 INFO L226 Difference]: Without dead ends: 6171 [2020-01-16 18:02:46,934 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 18:02:47,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6171 states. [2020-01-16 18:02:47,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6171 to 6171. [2020-01-16 18:02:47,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6171 states. [2020-01-16 18:02:47,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6171 states to 6171 states and 30927 transitions. [2020-01-16 18:02:47,262 INFO L78 Accepts]: Start accepts. Automaton has 6171 states and 30927 transitions. Word has length 28 [2020-01-16 18:02:47,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:47,263 INFO L478 AbstractCegarLoop]: Abstraction has 6171 states and 30927 transitions. [2020-01-16 18:02:47,263 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 18:02:47,263 INFO L276 IsEmpty]: Start isEmpty. Operand 6171 states and 30927 transitions. [2020-01-16 18:02:47,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:02:47,279 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:47,279 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 18:02:47,279 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 18:02:47,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:47,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1337464426, now seen corresponding path program 1 times [2020-01-16 18:02:47,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:47,280 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363800497] [2020-01-16 18:02:47,280 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:47,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:47,309 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 18:02:47,310 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363800497] [2020-01-16 18:02:47,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:47,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 18:02:47,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696758660] [2020-01-16 18:02:47,311 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 18:02:47,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:47,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 18:02:47,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 18:02:47,312 INFO L87 Difference]: Start difference. First operand 6171 states and 30927 transitions. Second operand 3 states. [2020-01-16 18:02:47,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:47,354 INFO L93 Difference]: Finished difference Result 3883 states and 18511 transitions. [2020-01-16 18:02:47,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 18:02:47,355 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-01-16 18:02:47,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:47,367 INFO L225 Difference]: With dead ends: 3883 [2020-01-16 18:02:47,367 INFO L226 Difference]: Without dead ends: 3883 [2020-01-16 18:02:47,368 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 18:02:47,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3883 states. [2020-01-16 18:02:48,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3883 to 3883. [2020-01-16 18:02:48,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3883 states. [2020-01-16 18:02:48,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3883 states to 3883 states and 18511 transitions. [2020-01-16 18:02:48,059 INFO L78 Accepts]: Start accepts. Automaton has 3883 states and 18511 transitions. Word has length 28 [2020-01-16 18:02:48,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:48,062 INFO L478 AbstractCegarLoop]: Abstraction has 3883 states and 18511 transitions. [2020-01-16 18:02:48,062 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 18:02:48,062 INFO L276 IsEmpty]: Start isEmpty. Operand 3883 states and 18511 transitions. [2020-01-16 18:02:48,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:02:48,071 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:48,072 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:48,072 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 18:02:48,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:48,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1461842622, now seen corresponding path program 1 times [2020-01-16 18:02:48,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:48,074 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199659377] [2020-01-16 18:02:48,075 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:48,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:48,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:48,130 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199659377] [2020-01-16 18:02:48,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:48,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 18:02:48,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099208082] [2020-01-16 18:02:48,131 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 18:02:48,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:48,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 18:02:48,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 18:02:48,132 INFO L87 Difference]: Start difference. First operand 3883 states and 18511 transitions. Second operand 3 states. [2020-01-16 18:02:48,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:48,165 INFO L93 Difference]: Finished difference Result 2539 states and 11503 transitions. [2020-01-16 18:02:48,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 18:02:48,165 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-01-16 18:02:48,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:48,175 INFO L225 Difference]: With dead ends: 2539 [2020-01-16 18:02:48,176 INFO L226 Difference]: Without dead ends: 2539 [2020-01-16 18:02:48,176 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 18:02:48,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2539 states. [2020-01-16 18:02:48,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2539 to 2539. [2020-01-16 18:02:48,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2539 states. [2020-01-16 18:02:48,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2539 states to 2539 states and 11503 transitions. [2020-01-16 18:02:48,302 INFO L78 Accepts]: Start accepts. Automaton has 2539 states and 11503 transitions. Word has length 28 [2020-01-16 18:02:48,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:48,303 INFO L478 AbstractCegarLoop]: Abstraction has 2539 states and 11503 transitions. [2020-01-16 18:02:48,303 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 18:02:48,303 INFO L276 IsEmpty]: Start isEmpty. Operand 2539 states and 11503 transitions. [2020-01-16 18:02:48,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:02:48,308 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:48,308 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:48,309 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 18:02:48,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:48,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1283995022, now seen corresponding path program 1 times [2020-01-16 18:02:48,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:48,310 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211643628] [2020-01-16 18:02:48,310 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:48,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:48,352 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 18:02:48,352 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211643628] [2020-01-16 18:02:48,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:48,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 18:02:48,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628015471] [2020-01-16 18:02:48,353 INFO L458 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-01-16 18:02:48,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:48,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-01-16 18:02:48,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-01-16 18:02:48,354 INFO L87 Difference]: Start difference. First operand 2539 states and 11503 transitions. Second operand 3 states. [2020-01-16 18:02:48,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:48,379 INFO L93 Difference]: Finished difference Result 1535 states and 6913 transitions. [2020-01-16 18:02:48,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-01-16 18:02:48,379 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-01-16 18:02:48,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:48,384 INFO L225 Difference]: With dead ends: 1535 [2020-01-16 18:02:48,384 INFO L226 Difference]: Without dead ends: 1535 [2020-01-16 18:02:48,385 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 18:02:48,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1535 states. [2020-01-16 18:02:48,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1535 to 1535. [2020-01-16 18:02:48,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1535 states. [2020-01-16 18:02:48,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1535 states to 1535 states and 6913 transitions. [2020-01-16 18:02:48,455 INFO L78 Accepts]: Start accepts. Automaton has 1535 states and 6913 transitions. Word has length 28 [2020-01-16 18:02:48,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:48,455 INFO L478 AbstractCegarLoop]: Abstraction has 1535 states and 6913 transitions. [2020-01-16 18:02:48,455 INFO L479 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-01-16 18:02:48,455 INFO L276 IsEmpty]: Start isEmpty. Operand 1535 states and 6913 transitions. [2020-01-16 18:02:48,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:02:48,458 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:48,458 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 18:02:48,458 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 18:02:48,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:48,459 INFO L82 PathProgramCache]: Analyzing trace with hash 662697718, now seen corresponding path program 1 times [2020-01-16 18:02:48,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:48,459 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599430170] [2020-01-16 18:02:48,459 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:48,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:49,035 WARN L192 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 24 [2020-01-16 18:02:49,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:49,417 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599430170] [2020-01-16 18:02:49,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:49,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:02:49,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880395791] [2020-01-16 18:02:49,418 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:02:49,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:49,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:02:49,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:02:49,419 INFO L87 Difference]: Start difference. First operand 1535 states and 6913 transitions. Second operand 11 states. [2020-01-16 18:02:49,698 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 31 [2020-01-16 18:02:49,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:49,720 INFO L93 Difference]: Finished difference Result 3001 states and 11928 transitions. [2020-01-16 18:02:49,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:02:49,720 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:02:49,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:49,729 INFO L225 Difference]: With dead ends: 3001 [2020-01-16 18:02:49,730 INFO L226 Difference]: Without dead ends: 2986 [2020-01-16 18:02:49,731 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:02:49,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2986 states. [2020-01-16 18:02:49,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2986 to 1583. [2020-01-16 18:02:49,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:02:49,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7118 transitions. [2020-01-16 18:02:49,843 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7118 transitions. Word has length 28 [2020-01-16 18:02:49,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:49,844 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7118 transitions. [2020-01-16 18:02:49,844 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:02:49,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7118 transitions. [2020-01-16 18:02:49,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:02:49,848 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:49,848 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 18:02:49,848 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 18:02:49,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:49,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1407400216, now seen corresponding path program 2 times [2020-01-16 18:02:49,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:49,849 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753105167] [2020-01-16 18:02:49,849 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:49,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:50,580 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:02:50,588 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 18:02:50,589 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753105167] [2020-01-16 18:02:50,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:50,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:02:50,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348326212] [2020-01-16 18:02:50,590 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:02:50,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:50,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:02:50,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:02:50,590 INFO L87 Difference]: Start difference. First operand 1583 states and 7118 transitions. Second operand 11 states. [2020-01-16 18:02:50,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:50,901 INFO L93 Difference]: Finished difference Result 3002 states and 11925 transitions. [2020-01-16 18:02:50,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:02:50,901 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:02:50,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:50,908 INFO L225 Difference]: With dead ends: 3002 [2020-01-16 18:02:50,909 INFO L226 Difference]: Without dead ends: 2981 [2020-01-16 18:02:50,909 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 18:02:50,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2981 states. [2020-01-16 18:02:51,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2981 to 1578. [2020-01-16 18:02:51,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:02:51,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7104 transitions. [2020-01-16 18:02:51,060 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7104 transitions. Word has length 28 [2020-01-16 18:02:51,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:51,060 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7104 transitions. [2020-01-16 18:02:51,060 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:02:51,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7104 transitions. [2020-01-16 18:02:51,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:02:51,065 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:51,065 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 18:02:51,066 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 18:02:51,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:51,066 INFO L82 PathProgramCache]: Analyzing trace with hash -2021328620, now seen corresponding path program 3 times [2020-01-16 18:02:51,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:51,067 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242692542] [2020-01-16 18:02:51,067 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:51,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:51,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:51,753 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242692542] [2020-01-16 18:02:51,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:51,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:02:51,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709566709] [2020-01-16 18:02:51,754 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:02:51,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:51,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:02:51,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:02:51,754 INFO L87 Difference]: Start difference. First operand 1578 states and 7104 transitions. Second operand 11 states. [2020-01-16 18:02:51,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:51,982 INFO L93 Difference]: Finished difference Result 3006 states and 11932 transitions. [2020-01-16 18:02:51,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:02:51,982 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:02:51,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:51,990 INFO L225 Difference]: With dead ends: 3006 [2020-01-16 18:02:51,991 INFO L226 Difference]: Without dead ends: 2991 [2020-01-16 18:02:51,991 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 18:02:52,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2991 states. [2020-01-16 18:02:52,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2991 to 1584. [2020-01-16 18:02:52,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1584 states. [2020-01-16 18:02:52,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 7115 transitions. [2020-01-16 18:02:52,091 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 7115 transitions. Word has length 28 [2020-01-16 18:02:52,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:52,091 INFO L478 AbstractCegarLoop]: Abstraction has 1584 states and 7115 transitions. [2020-01-16 18:02:52,091 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:02:52,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 7115 transitions. [2020-01-16 18:02:52,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:02:52,096 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:52,096 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:52,096 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 18:02:52,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:52,096 INFO L82 PathProgramCache]: Analyzing trace with hash -531923624, now seen corresponding path program 4 times [2020-01-16 18:02:52,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:52,097 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560861382] [2020-01-16 18:02:52,097 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:52,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:52,706 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 18:02:52,706 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560861382] [2020-01-16 18:02:52,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:52,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:02:52,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134083812] [2020-01-16 18:02:52,707 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:02:52,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:52,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:02:52,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:02:52,707 INFO L87 Difference]: Start difference. First operand 1584 states and 7115 transitions. Second operand 11 states. [2020-01-16 18:02:52,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:52,881 INFO L93 Difference]: Finished difference Result 3011 states and 11936 transitions. [2020-01-16 18:02:52,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:02:52,881 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:02:52,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:52,888 INFO L225 Difference]: With dead ends: 3011 [2020-01-16 18:02:52,889 INFO L226 Difference]: Without dead ends: 2985 [2020-01-16 18:02:52,889 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:02:52,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2985 states. [2020-01-16 18:02:52,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2985 to 1578. [2020-01-16 18:02:52,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:02:52,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7098 transitions. [2020-01-16 18:02:52,973 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7098 transitions. Word has length 28 [2020-01-16 18:02:52,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:52,973 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7098 transitions. [2020-01-16 18:02:52,973 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:02:52,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7098 transitions. [2020-01-16 18:02:52,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:02:52,976 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:52,976 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:52,976 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 18:02:52,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:52,976 INFO L82 PathProgramCache]: Analyzing trace with hash 334314836, now seen corresponding path program 5 times [2020-01-16 18:02:52,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:52,977 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309475403] [2020-01-16 18:02:52,977 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:52,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:53,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:53,542 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309475403] [2020-01-16 18:02:53,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:53,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:02:53,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110887312] [2020-01-16 18:02:53,543 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:02:53,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:53,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:02:53,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:02:53,544 INFO L87 Difference]: Start difference. First operand 1578 states and 7098 transitions. Second operand 11 states. [2020-01-16 18:02:53,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:53,742 INFO L93 Difference]: Finished difference Result 3009 states and 11933 transitions. [2020-01-16 18:02:53,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:02:53,743 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:02:53,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:53,752 INFO L225 Difference]: With dead ends: 3009 [2020-01-16 18:02:53,752 INFO L226 Difference]: Without dead ends: 2993 [2020-01-16 18:02:53,754 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 18:02:53,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2993 states. [2020-01-16 18:02:53,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2993 to 1585. [2020-01-16 18:02:53,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 18:02:53,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7111 transitions. [2020-01-16 18:02:53,858 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7111 transitions. Word has length 28 [2020-01-16 18:02:53,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:53,858 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7111 transitions. [2020-01-16 18:02:53,859 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:02:53,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7111 transitions. [2020-01-16 18:02:53,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:02:53,863 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:53,863 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 18:02:53,863 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 18:02:53,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:53,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1079017334, now seen corresponding path program 6 times [2020-01-16 18:02:53,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:53,866 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378575121] [2020-01-16 18:02:53,866 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:53,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:54,441 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-01-16 18:02:54,620 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:02:54,628 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 18:02:54,628 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378575121] [2020-01-16 18:02:54,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:54,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:02:54,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388424001] [2020-01-16 18:02:54,629 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:02:54,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:54,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:02:54,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:02:54,630 INFO L87 Difference]: Start difference. First operand 1585 states and 7111 transitions. Second operand 11 states. [2020-01-16 18:02:54,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:54,794 INFO L93 Difference]: Finished difference Result 3013 states and 11934 transitions. [2020-01-16 18:02:54,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:02:54,794 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:02:54,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:54,800 INFO L225 Difference]: With dead ends: 3013 [2020-01-16 18:02:54,800 INFO L226 Difference]: Without dead ends: 2980 [2020-01-16 18:02:54,800 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 18:02:54,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2980 states. [2020-01-16 18:02:54,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2980 to 1572. [2020-01-16 18:02:54,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:02:54,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7081 transitions. [2020-01-16 18:02:54,874 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7081 transitions. Word has length 28 [2020-01-16 18:02:54,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:54,874 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7081 transitions. [2020-01-16 18:02:54,875 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:02:54,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7081 transitions. [2020-01-16 18:02:54,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:02:54,877 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:54,877 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 18:02:54,877 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 18:02:54,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:54,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1382710192, now seen corresponding path program 7 times [2020-01-16 18:02:54,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:54,878 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431403799] [2020-01-16 18:02:54,878 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:54,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:55,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:55,471 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431403799] [2020-01-16 18:02:55,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:55,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:02:55,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64249674] [2020-01-16 18:02:55,473 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:02:55,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:55,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:02:55,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:02:55,473 INFO L87 Difference]: Start difference. First operand 1572 states and 7081 transitions. Second operand 11 states. [2020-01-16 18:02:55,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:55,682 INFO L93 Difference]: Finished difference Result 2996 states and 11912 transitions. [2020-01-16 18:02:55,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:02:55,683 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:02:55,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:55,692 INFO L225 Difference]: With dead ends: 2996 [2020-01-16 18:02:55,693 INFO L226 Difference]: Without dead ends: 2981 [2020-01-16 18:02:55,695 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 18:02:55,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2981 states. [2020-01-16 18:02:55,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2981 to 1582. [2020-01-16 18:02:55,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 18:02:55,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7109 transitions. [2020-01-16 18:02:55,777 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7109 transitions. Word has length 28 [2020-01-16 18:02:55,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:55,778 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7109 transitions. [2020-01-16 18:02:55,778 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:02:55,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7109 transitions. [2020-01-16 18:02:55,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:02:55,780 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:55,781 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 18:02:55,781 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 18:02:55,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:55,781 INFO L82 PathProgramCache]: Analyzing trace with hash 2127412690, now seen corresponding path program 8 times [2020-01-16 18:02:55,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:55,781 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867488152] [2020-01-16 18:02:55,781 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:55,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:56,251 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:02:56,381 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:02:56,388 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 18:02:56,389 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867488152] [2020-01-16 18:02:56,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:56,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:02:56,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269072859] [2020-01-16 18:02:56,389 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:02:56,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:56,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:02:56,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:02:56,390 INFO L87 Difference]: Start difference. First operand 1582 states and 7109 transitions. Second operand 11 states. [2020-01-16 18:02:56,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:56,585 INFO L93 Difference]: Finished difference Result 2997 states and 11909 transitions. [2020-01-16 18:02:56,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:02:56,586 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:02:56,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:56,593 INFO L225 Difference]: With dead ends: 2997 [2020-01-16 18:02:56,594 INFO L226 Difference]: Without dead ends: 2976 [2020-01-16 18:02:56,594 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 18:02:56,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2976 states. [2020-01-16 18:02:56,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2976 to 1577. [2020-01-16 18:02:56,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:02:56,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7095 transitions. [2020-01-16 18:02:56,670 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7095 transitions. Word has length 28 [2020-01-16 18:02:56,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:56,670 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7095 transitions. [2020-01-16 18:02:56,670 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:02:56,670 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7095 transitions. [2020-01-16 18:02:56,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:02:56,673 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:56,673 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:56,674 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 18:02:56,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:56,674 INFO L82 PathProgramCache]: Analyzing trace with hash 309624812, now seen corresponding path program 9 times [2020-01-16 18:02:56,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:56,674 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708909904] [2020-01-16 18:02:56,675 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:56,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:57,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:02:57,243 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708909904] [2020-01-16 18:02:57,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:57,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:02:57,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237146987] [2020-01-16 18:02:57,244 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:02:57,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:57,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:02:57,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:02:57,245 INFO L87 Difference]: Start difference. First operand 1577 states and 7095 transitions. Second operand 11 states. [2020-01-16 18:02:57,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:57,430 INFO L93 Difference]: Finished difference Result 2998 states and 11911 transitions. [2020-01-16 18:02:57,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:02:57,431 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:02:57,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:57,439 INFO L225 Difference]: With dead ends: 2998 [2020-01-16 18:02:57,439 INFO L226 Difference]: Without dead ends: 2983 [2020-01-16 18:02:57,440 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 18:02:57,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2983 states. [2020-01-16 18:02:57,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2983 to 1582. [2020-01-16 18:02:57,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 18:02:57,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7104 transitions. [2020-01-16 18:02:57,510 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7104 transitions. Word has length 28 [2020-01-16 18:02:57,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:57,511 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7104 transitions. [2020-01-16 18:02:57,512 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:02:57,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7104 transitions. [2020-01-16 18:02:57,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:02:57,514 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:57,514 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:57,514 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 18:02:57,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:57,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1751234990, now seen corresponding path program 10 times [2020-01-16 18:02:57,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:57,515 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764636668] [2020-01-16 18:02:57,515 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:57,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:58,117 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 18:02:58,118 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764636668] [2020-01-16 18:02:58,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:58,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:02:58,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883852558] [2020-01-16 18:02:58,119 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:02:58,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:58,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:02:58,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:02:58,119 INFO L87 Difference]: Start difference. First operand 1582 states and 7104 transitions. Second operand 11 states. [2020-01-16 18:02:58,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:58,316 INFO L93 Difference]: Finished difference Result 3001 states and 11912 transitions. [2020-01-16 18:02:58,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:02:58,316 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:02:58,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:58,324 INFO L225 Difference]: With dead ends: 3001 [2020-01-16 18:02:58,324 INFO L226 Difference]: Without dead ends: 2978 [2020-01-16 18:02:58,324 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 18:02:58,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2978 states. [2020-01-16 18:02:58,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2978 to 1577. [2020-01-16 18:02:58,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:02:58,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7090 transitions. [2020-01-16 18:02:58,393 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7090 transitions. Word has length 28 [2020-01-16 18:02:58,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:58,393 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7090 transitions. [2020-01-16 18:02:58,393 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:02:58,393 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7090 transitions. [2020-01-16 18:02:58,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:02:58,396 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:58,396 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:58,396 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 18:02:58,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:58,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1629699028, now seen corresponding path program 11 times [2020-01-16 18:02:58,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:58,396 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877103657] [2020-01-16 18:02:58,397 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:58,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:58,944 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 18:02:58,945 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877103657] [2020-01-16 18:02:58,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:58,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:02:58,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452177297] [2020-01-16 18:02:58,946 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:02:58,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:58,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:02:58,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:02:58,947 INFO L87 Difference]: Start difference. First operand 1577 states and 7090 transitions. Second operand 11 states. [2020-01-16 18:02:59,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:02:59,132 INFO L93 Difference]: Finished difference Result 3001 states and 11913 transitions. [2020-01-16 18:02:59,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:02:59,133 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:02:59,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:02:59,140 INFO L225 Difference]: With dead ends: 3001 [2020-01-16 18:02:59,140 INFO L226 Difference]: Without dead ends: 2985 [2020-01-16 18:02:59,141 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 18:02:59,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2985 states. [2020-01-16 18:02:59,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2985 to 1583. [2020-01-16 18:02:59,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:02:59,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7101 transitions. [2020-01-16 18:02:59,211 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7101 transitions. Word has length 28 [2020-01-16 18:02:59,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:02:59,211 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7101 transitions. [2020-01-16 18:02:59,211 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:02:59,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7101 transitions. [2020-01-16 18:02:59,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:02:59,214 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:02:59,214 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:02:59,214 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 18:02:59,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:02:59,215 INFO L82 PathProgramCache]: Analyzing trace with hash -140294032, now seen corresponding path program 12 times [2020-01-16 18:02:59,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:02:59,215 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283380148] [2020-01-16 18:02:59,215 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:02:59,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:02:59,808 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:02:59,815 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 18:02:59,816 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283380148] [2020-01-16 18:02:59,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:02:59,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:02:59,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356013467] [2020-01-16 18:02:59,817 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:02:59,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:02:59,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:02:59,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:02:59,817 INFO L87 Difference]: Start difference. First operand 1583 states and 7101 transitions. Second operand 11 states. [2020-01-16 18:03:00,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:00,026 INFO L93 Difference]: Finished difference Result 3003 states and 11911 transitions. [2020-01-16 18:03:00,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:00,027 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:00,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:00,034 INFO L225 Difference]: With dead ends: 3003 [2020-01-16 18:03:00,034 INFO L226 Difference]: Without dead ends: 2974 [2020-01-16 18:03:00,035 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 18:03:00,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2974 states. [2020-01-16 18:03:00,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2974 to 1572. [2020-01-16 18:03:00,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:03:00,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7076 transitions. [2020-01-16 18:03:00,113 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7076 transitions. Word has length 28 [2020-01-16 18:03:00,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:00,113 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7076 transitions. [2020-01-16 18:03:00,113 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:00,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7076 transitions. [2020-01-16 18:03:00,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:00,115 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:00,115 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 18:03:00,115 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 18:03:00,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:00,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1393213296, now seen corresponding path program 13 times [2020-01-16 18:03:00,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:00,116 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910187205] [2020-01-16 18:03:00,116 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:00,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:00,693 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 18:03:00,693 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910187205] [2020-01-16 18:03:00,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:00,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:00,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359588777] [2020-01-16 18:03:00,694 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:00,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:00,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:00,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:00,695 INFO L87 Difference]: Start difference. First operand 1572 states and 7076 transitions. Second operand 11 states. [2020-01-16 18:03:00,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:00,902 INFO L93 Difference]: Finished difference Result 3012 states and 11939 transitions. [2020-01-16 18:03:00,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:00,903 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:00,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:00,910 INFO L225 Difference]: With dead ends: 3012 [2020-01-16 18:03:00,910 INFO L226 Difference]: Without dead ends: 2997 [2020-01-16 18:03:00,910 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 18:03:00,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2997 states. [2020-01-16 18:03:00,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2997 to 1585. [2020-01-16 18:03:00,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 18:03:00,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7111 transitions. [2020-01-16 18:03:00,980 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7111 transitions. Word has length 28 [2020-01-16 18:03:00,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:00,980 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7111 transitions. [2020-01-16 18:03:00,980 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:00,980 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7111 transitions. [2020-01-16 18:03:00,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:00,984 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:00,984 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 18:03:00,984 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 18:03:00,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:00,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1412349004, now seen corresponding path program 14 times [2020-01-16 18:03:00,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:00,985 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820903086] [2020-01-16 18:03:00,985 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:00,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:01,593 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 18:03:01,593 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820903086] [2020-01-16 18:03:01,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:01,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:01,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292314913] [2020-01-16 18:03:01,594 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:01,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:01,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:01,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:01,594 INFO L87 Difference]: Start difference. First operand 1585 states and 7111 transitions. Second operand 11 states. [2020-01-16 18:03:01,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:01,796 INFO L93 Difference]: Finished difference Result 3017 states and 11943 transitions. [2020-01-16 18:03:01,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:01,796 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:01,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:01,804 INFO L225 Difference]: With dead ends: 3017 [2020-01-16 18:03:01,804 INFO L226 Difference]: Without dead ends: 2991 [2020-01-16 18:03:01,805 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 18:03:01,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2991 states. [2020-01-16 18:03:01,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2991 to 1579. [2020-01-16 18:03:01,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:03:01,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7094 transitions. [2020-01-16 18:03:01,872 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7094 transitions. Word has length 28 [2020-01-16 18:03:01,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:01,873 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7094 transitions. [2020-01-16 18:03:01,873 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:01,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7094 transitions. [2020-01-16 18:03:01,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:01,875 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:01,875 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 18:03:01,875 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 18:03:01,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:01,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1290813042, now seen corresponding path program 15 times [2020-01-16 18:03:01,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:01,876 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540461269] [2020-01-16 18:03:01,876 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:01,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:02,427 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 18:03:02,428 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540461269] [2020-01-16 18:03:02,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:02,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:02,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724982193] [2020-01-16 18:03:02,429 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:02,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:02,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:02,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:02,429 INFO L87 Difference]: Start difference. First operand 1579 states and 7094 transitions. Second operand 11 states. [2020-01-16 18:03:02,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:02,665 INFO L93 Difference]: Finished difference Result 3009 states and 11928 transitions. [2020-01-16 18:03:02,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:02,665 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:02,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:02,673 INFO L225 Difference]: With dead ends: 3009 [2020-01-16 18:03:02,673 INFO L226 Difference]: Without dead ends: 2994 [2020-01-16 18:03:02,673 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:03:02,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2020-01-16 18:03:02,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 1584. [2020-01-16 18:03:02,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1584 states. [2020-01-16 18:03:02,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 7103 transitions. [2020-01-16 18:03:02,741 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 7103 transitions. Word has length 28 [2020-01-16 18:03:02,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:02,741 INFO L478 AbstractCegarLoop]: Abstraction has 1584 states and 7103 transitions. [2020-01-16 18:03:02,741 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:02,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 7103 transitions. [2020-01-16 18:03:02,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:02,744 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:02,744 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 18:03:02,744 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 18:03:02,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:02,744 INFO L82 PathProgramCache]: Analyzing trace with hash 943294452, now seen corresponding path program 16 times [2020-01-16 18:03:02,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:02,744 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149317944] [2020-01-16 18:03:02,745 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:02,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:03,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:03,346 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149317944] [2020-01-16 18:03:03,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:03,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:03,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326880674] [2020-01-16 18:03:03,346 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:03,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:03,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:03,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:03,347 INFO L87 Difference]: Start difference. First operand 1584 states and 7103 transitions. Second operand 11 states. [2020-01-16 18:03:03,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:03,576 INFO L93 Difference]: Finished difference Result 3012 states and 11929 transitions. [2020-01-16 18:03:03,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:03,577 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:03,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:03,583 INFO L225 Difference]: With dead ends: 3012 [2020-01-16 18:03:03,583 INFO L226 Difference]: Without dead ends: 2989 [2020-01-16 18:03:03,584 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 18:03:03,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2020-01-16 18:03:03,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 1579. [2020-01-16 18:03:03,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:03:03,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7089 transitions. [2020-01-16 18:03:03,651 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7089 transitions. Word has length 28 [2020-01-16 18:03:03,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:03,651 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7089 transitions. [2020-01-16 18:03:03,651 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:03,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7089 transitions. [2020-01-16 18:03:03,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:03,654 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:03,654 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:03,654 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 18:03:03,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:03,654 INFO L82 PathProgramCache]: Analyzing trace with hash -874493426, now seen corresponding path program 17 times [2020-01-16 18:03:03,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:03,655 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592978700] [2020-01-16 18:03:03,655 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:03,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:04,145 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 30 [2020-01-16 18:03:04,269 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-01-16 18:03:04,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:04,279 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592978700] [2020-01-16 18:03:04,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:04,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:04,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706963933] [2020-01-16 18:03:04,280 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:04,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:04,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:04,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:04,280 INFO L87 Difference]: Start difference. First operand 1579 states and 7089 transitions. Second operand 11 states. [2020-01-16 18:03:04,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:04,505 INFO L93 Difference]: Finished difference Result 3024 states and 11953 transitions. [2020-01-16 18:03:04,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:04,505 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:04,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:04,512 INFO L225 Difference]: With dead ends: 3024 [2020-01-16 18:03:04,512 INFO L226 Difference]: Without dead ends: 3004 [2020-01-16 18:03:04,513 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 18:03:04,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3004 states. [2020-01-16 18:03:04,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3004 to 1589. [2020-01-16 18:03:04,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1589 states. [2020-01-16 18:03:04,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 7106 transitions. [2020-01-16 18:03:04,582 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 7106 transitions. Word has length 28 [2020-01-16 18:03:04,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:04,582 INFO L478 AbstractCegarLoop]: Abstraction has 1589 states and 7106 transitions. [2020-01-16 18:03:04,582 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:04,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 7106 transitions. [2020-01-16 18:03:04,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:04,584 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:04,585 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 18:03:04,585 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 18:03:04,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:04,585 INFO L82 PathProgramCache]: Analyzing trace with hash -129790928, now seen corresponding path program 18 times [2020-01-16 18:03:04,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:04,585 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474392393] [2020-01-16 18:03:04,585 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:04,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:04,882 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 23 [2020-01-16 18:03:05,204 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 18:03:05,204 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474392393] [2020-01-16 18:03:05,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:05,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:05,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878337759] [2020-01-16 18:03:05,205 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:05,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:05,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:05,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:05,206 INFO L87 Difference]: Start difference. First operand 1589 states and 7106 transitions. Second operand 11 states. [2020-01-16 18:03:05,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:05,420 INFO L93 Difference]: Finished difference Result 3022 states and 11941 transitions. [2020-01-16 18:03:05,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:05,420 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:05,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:05,428 INFO L225 Difference]: With dead ends: 3022 [2020-01-16 18:03:05,428 INFO L226 Difference]: Without dead ends: 2987 [2020-01-16 18:03:05,428 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 18:03:05,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2987 states. [2020-01-16 18:03:05,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2987 to 1572. [2020-01-16 18:03:05,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:03:05,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7069 transitions. [2020-01-16 18:03:05,496 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7069 transitions. Word has length 28 [2020-01-16 18:03:05,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:05,496 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7069 transitions. [2020-01-16 18:03:05,496 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:05,496 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7069 transitions. [2020-01-16 18:03:05,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:05,498 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:05,498 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:05,498 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 18:03:05,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:05,499 INFO L82 PathProgramCache]: Analyzing trace with hash -2146548398, now seen corresponding path program 19 times [2020-01-16 18:03:05,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:05,499 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005628016] [2020-01-16 18:03:05,499 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:05,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:06,111 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 18:03:06,111 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005628016] [2020-01-16 18:03:06,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:06,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:06,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845725111] [2020-01-16 18:03:06,112 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:06,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:06,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:06,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:06,112 INFO L87 Difference]: Start difference. First operand 1572 states and 7069 transitions. Second operand 11 states. [2020-01-16 18:03:06,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:06,341 INFO L93 Difference]: Finished difference Result 3019 states and 11951 transitions. [2020-01-16 18:03:06,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:06,341 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:06,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:06,349 INFO L225 Difference]: With dead ends: 3019 [2020-01-16 18:03:06,350 INFO L226 Difference]: Without dead ends: 3003 [2020-01-16 18:03:06,350 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 18:03:06,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3003 states. [2020-01-16 18:03:06,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3003 to 1587. [2020-01-16 18:03:06,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1587 states. [2020-01-16 18:03:06,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 7110 transitions. [2020-01-16 18:03:06,424 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 7110 transitions. Word has length 28 [2020-01-16 18:03:06,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:06,425 INFO L478 AbstractCegarLoop]: Abstraction has 1587 states and 7110 transitions. [2020-01-16 18:03:06,425 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:06,425 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 7110 transitions. [2020-01-16 18:03:06,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:06,428 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:06,428 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 18:03:06,428 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 18:03:06,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:06,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1401845900, now seen corresponding path program 20 times [2020-01-16 18:03:06,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:06,429 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753869382] [2020-01-16 18:03:06,429 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:06,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:07,021 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 18:03:07,021 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753869382] [2020-01-16 18:03:07,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:07,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:07,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119642257] [2020-01-16 18:03:07,022 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:07,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:07,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:07,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:07,022 INFO L87 Difference]: Start difference. First operand 1587 states and 7110 transitions. Second operand 11 states. [2020-01-16 18:03:07,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:07,205 INFO L93 Difference]: Finished difference Result 3023 states and 11952 transitions. [2020-01-16 18:03:07,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:07,205 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:07,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:07,212 INFO L225 Difference]: With dead ends: 3023 [2020-01-16 18:03:07,212 INFO L226 Difference]: Without dead ends: 2996 [2020-01-16 18:03:07,212 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 18:03:07,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2996 states. [2020-01-16 18:03:07,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2996 to 1580. [2020-01-16 18:03:07,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:03:07,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7090 transitions. [2020-01-16 18:03:07,280 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7090 transitions. Word has length 28 [2020-01-16 18:03:07,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:07,280 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7090 transitions. [2020-01-16 18:03:07,280 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:07,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7090 transitions. [2020-01-16 18:03:07,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:07,283 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:07,283 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:07,283 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 18:03:07,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:07,283 INFO L82 PathProgramCache]: Analyzing trace with hash -535607440, now seen corresponding path program 21 times [2020-01-16 18:03:07,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:07,283 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2271084] [2020-01-16 18:03:07,283 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:07,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:07,844 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 18:03:07,844 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2271084] [2020-01-16 18:03:07,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:07,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:07,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350608088] [2020-01-16 18:03:07,845 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:07,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:07,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:07,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:07,846 INFO L87 Difference]: Start difference. First operand 1580 states and 7090 transitions. Second operand 11 states. [2020-01-16 18:03:08,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:08,089 INFO L93 Difference]: Finished difference Result 3016 states and 11939 transitions. [2020-01-16 18:03:08,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:08,089 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:08,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:08,097 INFO L225 Difference]: With dead ends: 3016 [2020-01-16 18:03:08,097 INFO L226 Difference]: Without dead ends: 3000 [2020-01-16 18:03:08,097 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 18:03:08,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3000 states. [2020-01-16 18:03:08,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3000 to 1586. [2020-01-16 18:03:08,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1586 states. [2020-01-16 18:03:08,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 7101 transitions. [2020-01-16 18:03:08,171 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 7101 transitions. Word has length 28 [2020-01-16 18:03:08,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:08,172 INFO L478 AbstractCegarLoop]: Abstraction has 1586 states and 7101 transitions. [2020-01-16 18:03:08,172 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:08,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 7101 transitions. [2020-01-16 18:03:08,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:08,175 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:08,175 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:08,175 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 18:03:08,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:08,176 INFO L82 PathProgramCache]: Analyzing trace with hash 953797556, now seen corresponding path program 22 times [2020-01-16 18:03:08,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:08,176 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748889451] [2020-01-16 18:03:08,176 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:08,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:08,729 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 18:03:08,730 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748889451] [2020-01-16 18:03:08,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:08,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:08,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622074001] [2020-01-16 18:03:08,731 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:08,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:08,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:08,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:08,731 INFO L87 Difference]: Start difference. First operand 1586 states and 7101 transitions. Second operand 11 states. [2020-01-16 18:03:08,941 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2020-01-16 18:03:08,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:08,959 INFO L93 Difference]: Finished difference Result 3018 states and 11937 transitions. [2020-01-16 18:03:08,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:08,960 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:08,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:08,968 INFO L225 Difference]: With dead ends: 3018 [2020-01-16 18:03:08,968 INFO L226 Difference]: Without dead ends: 2994 [2020-01-16 18:03:08,968 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 18:03:09,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2020-01-16 18:03:09,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 1580. [2020-01-16 18:03:09,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:03:09,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7084 transitions. [2020-01-16 18:03:09,048 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7084 transitions. Word has length 28 [2020-01-16 18:03:09,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:09,048 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7084 transitions. [2020-01-16 18:03:09,048 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:09,049 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7084 transitions. [2020-01-16 18:03:09,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:09,051 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:09,051 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 18:03:09,051 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 18:03:09,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:09,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1820036016, now seen corresponding path program 23 times [2020-01-16 18:03:09,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:09,052 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349980159] [2020-01-16 18:03:09,052 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:09,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:09,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:09,638 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349980159] [2020-01-16 18:03:09,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:09,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:09,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004579838] [2020-01-16 18:03:09,639 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:09,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:09,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:09,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:09,639 INFO L87 Difference]: Start difference. First operand 1580 states and 7084 transitions. Second operand 11 states. [2020-01-16 18:03:09,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:09,799 INFO L93 Difference]: Finished difference Result 3028 states and 11956 transitions. [2020-01-16 18:03:09,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:09,800 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:09,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:09,807 INFO L225 Difference]: With dead ends: 3028 [2020-01-16 18:03:09,807 INFO L226 Difference]: Without dead ends: 3008 [2020-01-16 18:03:09,808 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 18:03:09,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2020-01-16 18:03:09,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 1590. [2020-01-16 18:03:09,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1590 states. [2020-01-16 18:03:09,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 7101 transitions. [2020-01-16 18:03:09,876 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 7101 transitions. Word has length 28 [2020-01-16 18:03:09,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:09,877 INFO L478 AbstractCegarLoop]: Abstraction has 1590 states and 7101 transitions. [2020-01-16 18:03:09,877 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:09,877 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 7101 transitions. [2020-01-16 18:03:09,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:09,879 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:09,879 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 18:03:09,879 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 18:03:09,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:09,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1730228782, now seen corresponding path program 24 times [2020-01-16 18:03:09,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:09,880 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4075836] [2020-01-16 18:03:09,880 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:09,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:10,480 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 18:03:10,480 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4075836] [2020-01-16 18:03:10,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:10,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:10,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166314569] [2020-01-16 18:03:10,481 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:10,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:10,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:10,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:10,482 INFO L87 Difference]: Start difference. First operand 1590 states and 7101 transitions. Second operand 11 states. [2020-01-16 18:03:10,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:10,732 INFO L93 Difference]: Finished difference Result 3026 states and 11944 transitions. [2020-01-16 18:03:10,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:10,733 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:10,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:10,740 INFO L225 Difference]: With dead ends: 3026 [2020-01-16 18:03:10,740 INFO L226 Difference]: Without dead ends: 2983 [2020-01-16 18:03:10,740 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 18:03:10,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2983 states. [2020-01-16 18:03:10,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2983 to 1565. [2020-01-16 18:03:10,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 18:03:10,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7049 transitions. [2020-01-16 18:03:10,808 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7049 transitions. Word has length 28 [2020-01-16 18:03:10,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:10,808 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7049 transitions. [2020-01-16 18:03:10,809 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:10,809 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7049 transitions. [2020-01-16 18:03:10,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:10,811 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:10,811 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:10,811 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 18:03:10,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:10,811 INFO L82 PathProgramCache]: Analyzing trace with hash 582955646, now seen corresponding path program 25 times [2020-01-16 18:03:10,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:10,812 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695252590] [2020-01-16 18:03:10,812 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:10,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:11,357 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 18:03:11,358 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695252590] [2020-01-16 18:03:11,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:11,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:11,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28301926] [2020-01-16 18:03:11,358 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:11,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:11,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:11,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:11,359 INFO L87 Difference]: Start difference. First operand 1565 states and 7049 transitions. Second operand 11 states. [2020-01-16 18:03:11,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:11,571 INFO L93 Difference]: Finished difference Result 2995 states and 11908 transitions. [2020-01-16 18:03:11,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:11,571 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:11,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:11,578 INFO L225 Difference]: With dead ends: 2995 [2020-01-16 18:03:11,578 INFO L226 Difference]: Without dead ends: 2980 [2020-01-16 18:03:11,579 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 18:03:11,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2980 states. [2020-01-16 18:03:11,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2980 to 1582. [2020-01-16 18:03:11,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 18:03:11,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7108 transitions. [2020-01-16 18:03:11,647 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7108 transitions. Word has length 28 [2020-01-16 18:03:11,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:11,647 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7108 transitions. [2020-01-16 18:03:11,647 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:11,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7108 transitions. [2020-01-16 18:03:11,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:11,650 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:11,650 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 18:03:11,650 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 18:03:11,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:11,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1327658144, now seen corresponding path program 26 times [2020-01-16 18:03:11,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:11,651 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576858803] [2020-01-16 18:03:11,651 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:11,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:12,217 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 18:03:12,217 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576858803] [2020-01-16 18:03:12,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:12,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:12,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45267940] [2020-01-16 18:03:12,218 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:12,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:12,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:12,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:12,218 INFO L87 Difference]: Start difference. First operand 1582 states and 7108 transitions. Second operand 11 states. [2020-01-16 18:03:12,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:12,400 INFO L93 Difference]: Finished difference Result 2996 states and 11905 transitions. [2020-01-16 18:03:12,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:12,401 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:12,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:12,408 INFO L225 Difference]: With dead ends: 2996 [2020-01-16 18:03:12,408 INFO L226 Difference]: Without dead ends: 2975 [2020-01-16 18:03:12,409 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 18:03:12,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2975 states. [2020-01-16 18:03:12,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2975 to 1577. [2020-01-16 18:03:12,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:03:12,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7094 transitions. [2020-01-16 18:03:12,480 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7094 transitions. Word has length 28 [2020-01-16 18:03:12,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:12,480 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7094 transitions. [2020-01-16 18:03:12,481 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:12,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7094 transitions. [2020-01-16 18:03:12,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:12,484 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:12,484 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 18:03:12,484 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 18:03:12,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:12,485 INFO L82 PathProgramCache]: Analyzing trace with hash -2101070692, now seen corresponding path program 27 times [2020-01-16 18:03:12,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:12,485 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600168053] [2020-01-16 18:03:12,485 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:12,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:13,098 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 18:03:13,099 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600168053] [2020-01-16 18:03:13,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:13,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:13,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005266568] [2020-01-16 18:03:13,099 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:13,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:13,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:13,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:13,100 INFO L87 Difference]: Start difference. First operand 1577 states and 7094 transitions. Second operand 11 states. [2020-01-16 18:03:13,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:13,350 INFO L93 Difference]: Finished difference Result 3000 states and 11912 transitions. [2020-01-16 18:03:13,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:13,350 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:13,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:13,359 INFO L225 Difference]: With dead ends: 3000 [2020-01-16 18:03:13,359 INFO L226 Difference]: Without dead ends: 2985 [2020-01-16 18:03:13,360 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 18:03:13,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2985 states. [2020-01-16 18:03:13,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2985 to 1583. [2020-01-16 18:03:13,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:03:13,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7105 transitions. [2020-01-16 18:03:13,477 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7105 transitions. Word has length 28 [2020-01-16 18:03:13,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:13,477 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7105 transitions. [2020-01-16 18:03:13,477 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:13,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7105 transitions. [2020-01-16 18:03:13,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:13,481 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:13,481 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 18:03:13,481 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 18:03:13,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:13,482 INFO L82 PathProgramCache]: Analyzing trace with hash -611665696, now seen corresponding path program 28 times [2020-01-16 18:03:13,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:13,482 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863772981] [2020-01-16 18:03:13,482 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:13,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:14,060 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 18:03:14,060 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863772981] [2020-01-16 18:03:14,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:14,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:14,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531414939] [2020-01-16 18:03:14,061 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:14,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:14,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:14,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:14,062 INFO L87 Difference]: Start difference. First operand 1583 states and 7105 transitions. Second operand 11 states. [2020-01-16 18:03:14,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:14,242 INFO L93 Difference]: Finished difference Result 3005 states and 11916 transitions. [2020-01-16 18:03:14,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:14,243 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:14,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:14,250 INFO L225 Difference]: With dead ends: 3005 [2020-01-16 18:03:14,250 INFO L226 Difference]: Without dead ends: 2979 [2020-01-16 18:03:14,251 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:03:14,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2979 states. [2020-01-16 18:03:14,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2979 to 1577. [2020-01-16 18:03:14,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:03:14,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7088 transitions. [2020-01-16 18:03:14,318 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7088 transitions. Word has length 28 [2020-01-16 18:03:14,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:14,318 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7088 transitions. [2020-01-16 18:03:14,318 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:14,319 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7088 transitions. [2020-01-16 18:03:14,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:14,321 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:14,321 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 18:03:14,321 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 18:03:14,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:14,322 INFO L82 PathProgramCache]: Analyzing trace with hash 254572764, now seen corresponding path program 29 times [2020-01-16 18:03:14,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:14,322 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397846564] [2020-01-16 18:03:14,322 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:14,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:14,876 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 18:03:14,876 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397846564] [2020-01-16 18:03:14,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:14,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:14,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120739635] [2020-01-16 18:03:14,877 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:14,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:14,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:14,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:14,878 INFO L87 Difference]: Start difference. First operand 1577 states and 7088 transitions. Second operand 11 states. [2020-01-16 18:03:15,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:15,063 INFO L93 Difference]: Finished difference Result 3003 states and 11913 transitions. [2020-01-16 18:03:15,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:15,063 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:15,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:15,071 INFO L225 Difference]: With dead ends: 3003 [2020-01-16 18:03:15,071 INFO L226 Difference]: Without dead ends: 2987 [2020-01-16 18:03:15,071 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 18:03:15,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2987 states. [2020-01-16 18:03:15,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2987 to 1584. [2020-01-16 18:03:15,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1584 states. [2020-01-16 18:03:15,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 7101 transitions. [2020-01-16 18:03:15,142 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 7101 transitions. Word has length 28 [2020-01-16 18:03:15,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:15,142 INFO L478 AbstractCegarLoop]: Abstraction has 1584 states and 7101 transitions. [2020-01-16 18:03:15,142 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:15,142 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 7101 transitions. [2020-01-16 18:03:15,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:15,145 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:15,145 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:15,145 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 18:03:15,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:15,145 INFO L82 PathProgramCache]: Analyzing trace with hash 999275262, now seen corresponding path program 30 times [2020-01-16 18:03:15,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:15,146 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783694146] [2020-01-16 18:03:15,146 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:15,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:15,739 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 18:03:15,739 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783694146] [2020-01-16 18:03:15,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:15,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:15,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312529441] [2020-01-16 18:03:15,740 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:15,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:15,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:15,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:15,740 INFO L87 Difference]: Start difference. First operand 1584 states and 7101 transitions. Second operand 11 states. [2020-01-16 18:03:15,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:15,924 INFO L93 Difference]: Finished difference Result 3007 states and 11914 transitions. [2020-01-16 18:03:15,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:15,924 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:15,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:15,932 INFO L225 Difference]: With dead ends: 3007 [2020-01-16 18:03:15,932 INFO L226 Difference]: Without dead ends: 2974 [2020-01-16 18:03:15,932 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 18:03:15,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2974 states. [2020-01-16 18:03:15,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2974 to 1571. [2020-01-16 18:03:15,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:03:15,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7071 transitions. [2020-01-16 18:03:15,999 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7071 transitions. Word has length 28 [2020-01-16 18:03:16,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:16,000 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7071 transitions. [2020-01-16 18:03:16,000 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:16,000 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7071 transitions. [2020-01-16 18:03:16,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:16,002 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:16,002 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 18:03:16,002 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 18:03:16,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:16,003 INFO L82 PathProgramCache]: Analyzing trace with hash -242257480, now seen corresponding path program 31 times [2020-01-16 18:03:16,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:16,003 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306459589] [2020-01-16 18:03:16,003 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:16,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:16,598 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 18:03:16,599 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306459589] [2020-01-16 18:03:16,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:16,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:16,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748575138] [2020-01-16 18:03:16,599 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:16,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:16,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:16,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:16,600 INFO L87 Difference]: Start difference. First operand 1571 states and 7071 transitions. Second operand 11 states. [2020-01-16 18:03:16,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:16,827 INFO L93 Difference]: Finished difference Result 2989 states and 11890 transitions. [2020-01-16 18:03:16,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:16,827 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:16,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:16,834 INFO L225 Difference]: With dead ends: 2989 [2020-01-16 18:03:16,834 INFO L226 Difference]: Without dead ends: 2974 [2020-01-16 18:03:16,835 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 18:03:16,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2974 states. [2020-01-16 18:03:16,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2974 to 1581. [2020-01-16 18:03:16,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:03:16,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7099 transitions. [2020-01-16 18:03:16,906 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7099 transitions. Word has length 28 [2020-01-16 18:03:16,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:16,906 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7099 transitions. [2020-01-16 18:03:16,906 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:16,906 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7099 transitions. [2020-01-16 18:03:16,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:16,909 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:16,909 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:16,909 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 18:03:16,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:16,910 INFO L82 PathProgramCache]: Analyzing trace with hash 502445018, now seen corresponding path program 32 times [2020-01-16 18:03:16,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:16,910 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647763773] [2020-01-16 18:03:16,910 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:16,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:17,378 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 26 [2020-01-16 18:03:17,523 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 29 [2020-01-16 18:03:17,684 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:03:17,695 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 18:03:17,695 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647763773] [2020-01-16 18:03:17,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:17,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:17,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954466236] [2020-01-16 18:03:17,697 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:17,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:17,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:17,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:17,698 INFO L87 Difference]: Start difference. First operand 1581 states and 7099 transitions. Second operand 11 states. [2020-01-16 18:03:17,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:17,966 INFO L93 Difference]: Finished difference Result 2990 states and 11887 transitions. [2020-01-16 18:03:17,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:17,966 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:17,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:17,974 INFO L225 Difference]: With dead ends: 2990 [2020-01-16 18:03:17,974 INFO L226 Difference]: Without dead ends: 2969 [2020-01-16 18:03:17,975 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:03:18,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2969 states. [2020-01-16 18:03:18,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2969 to 1576. [2020-01-16 18:03:18,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:03:18,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7085 transitions. [2020-01-16 18:03:18,088 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7085 transitions. Word has length 28 [2020-01-16 18:03:18,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:18,089 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7085 transitions. [2020-01-16 18:03:18,089 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:18,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7085 transitions. [2020-01-16 18:03:18,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:18,092 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:18,093 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 18:03:18,093 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 18:03:18,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:18,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1850572662, now seen corresponding path program 33 times [2020-01-16 18:03:18,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:18,093 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240736732] [2020-01-16 18:03:18,094 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:18,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:18,636 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 18:03:18,637 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240736732] [2020-01-16 18:03:18,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:18,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:18,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423003978] [2020-01-16 18:03:18,637 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:18,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:18,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:18,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:18,638 INFO L87 Difference]: Start difference. First operand 1576 states and 7085 transitions. Second operand 11 states. [2020-01-16 18:03:18,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:18,871 INFO L93 Difference]: Finished difference Result 2990 states and 11887 transitions. [2020-01-16 18:03:18,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:18,871 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:18,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:18,879 INFO L225 Difference]: With dead ends: 2990 [2020-01-16 18:03:18,879 INFO L226 Difference]: Without dead ends: 2975 [2020-01-16 18:03:18,880 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:03:18,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2975 states. [2020-01-16 18:03:18,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2975 to 1581. [2020-01-16 18:03:18,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:03:18,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7094 transitions. [2020-01-16 18:03:18,947 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7094 transitions. Word has length 28 [2020-01-16 18:03:18,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:18,947 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7094 transitions. [2020-01-16 18:03:18,948 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:18,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7094 transitions. [2020-01-16 18:03:18,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:18,950 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:18,950 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:18,950 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 18:03:18,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:18,950 INFO L82 PathProgramCache]: Analyzing trace with hash -187919974, now seen corresponding path program 34 times [2020-01-16 18:03:18,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:18,951 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045736627] [2020-01-16 18:03:18,951 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:18,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:19,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:19,500 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045736627] [2020-01-16 18:03:19,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:19,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:19,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523092995] [2020-01-16 18:03:19,501 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:19,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:19,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:19,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:19,501 INFO L87 Difference]: Start difference. First operand 1581 states and 7094 transitions. Second operand 11 states. [2020-01-16 18:03:19,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:19,685 INFO L93 Difference]: Finished difference Result 2992 states and 11886 transitions. [2020-01-16 18:03:19,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:19,685 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:19,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:19,692 INFO L225 Difference]: With dead ends: 2992 [2020-01-16 18:03:19,692 INFO L226 Difference]: Without dead ends: 2970 [2020-01-16 18:03:19,693 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 18:03:19,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2970 states. [2020-01-16 18:03:19,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2970 to 1576. [2020-01-16 18:03:19,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:03:19,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7080 transitions. [2020-01-16 18:03:19,760 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7080 transitions. Word has length 28 [2020-01-16 18:03:19,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:19,760 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7080 transitions. [2020-01-16 18:03:19,760 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:19,760 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7080 transitions. [2020-01-16 18:03:19,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:19,763 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:19,763 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 18:03:19,763 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 18:03:19,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:19,763 INFO L82 PathProgramCache]: Analyzing trace with hash 505070794, now seen corresponding path program 35 times [2020-01-16 18:03:19,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:19,763 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365610376] [2020-01-16 18:03:19,764 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:19,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:20,322 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:03:20,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:20,331 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365610376] [2020-01-16 18:03:20,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:20,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:20,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078172677] [2020-01-16 18:03:20,332 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:20,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:20,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:20,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:20,332 INFO L87 Difference]: Start difference. First operand 1576 states and 7080 transitions. Second operand 11 states. [2020-01-16 18:03:20,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:20,528 INFO L93 Difference]: Finished difference Result 2993 states and 11889 transitions. [2020-01-16 18:03:20,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:20,529 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:20,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:20,536 INFO L225 Difference]: With dead ends: 2993 [2020-01-16 18:03:20,536 INFO L226 Difference]: Without dead ends: 2977 [2020-01-16 18:03:20,536 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 18:03:20,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2977 states. [2020-01-16 18:03:20,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2977 to 1582. [2020-01-16 18:03:20,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 18:03:20,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7091 transitions. [2020-01-16 18:03:20,604 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7091 transitions. Word has length 28 [2020-01-16 18:03:20,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:20,605 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7091 transitions. [2020-01-16 18:03:20,605 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:20,605 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7091 transitions. [2020-01-16 18:03:20,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:20,608 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:20,608 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 18:03:20,608 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 18:03:20,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:20,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1423020984, now seen corresponding path program 36 times [2020-01-16 18:03:20,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:20,608 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489301893] [2020-01-16 18:03:20,608 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:20,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:21,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:21,167 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489301893] [2020-01-16 18:03:21,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:21,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:21,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014540233] [2020-01-16 18:03:21,168 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:21,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:21,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:21,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:21,169 INFO L87 Difference]: Start difference. First operand 1582 states and 7091 transitions. Second operand 11 states. [2020-01-16 18:03:21,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:21,449 INFO L93 Difference]: Finished difference Result 2994 states and 11885 transitions. [2020-01-16 18:03:21,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:21,450 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:21,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:21,457 INFO L225 Difference]: With dead ends: 2994 [2020-01-16 18:03:21,458 INFO L226 Difference]: Without dead ends: 2966 [2020-01-16 18:03:21,458 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 18:03:21,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2966 states. [2020-01-16 18:03:21,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2966 to 1571. [2020-01-16 18:03:21,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:03:21,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7066 transitions. [2020-01-16 18:03:21,583 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7066 transitions. Word has length 28 [2020-01-16 18:03:21,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:21,584 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7066 transitions. [2020-01-16 18:03:21,584 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:21,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7066 transitions. [2020-01-16 18:03:21,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:21,586 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:21,586 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 18:03:21,586 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 18:03:21,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:21,587 INFO L82 PathProgramCache]: Analyzing trace with hash -231754376, now seen corresponding path program 37 times [2020-01-16 18:03:21,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:21,587 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228436596] [2020-01-16 18:03:21,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:22,127 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 18:03:22,127 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228436596] [2020-01-16 18:03:22,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:22,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:22,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735237454] [2020-01-16 18:03:22,127 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:22,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:22,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:22,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:22,128 INFO L87 Difference]: Start difference. First operand 1571 states and 7066 transitions. Second operand 11 states. [2020-01-16 18:03:22,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:22,392 INFO L93 Difference]: Finished difference Result 3002 states and 11911 transitions. [2020-01-16 18:03:22,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:22,393 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:22,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:22,401 INFO L225 Difference]: With dead ends: 3002 [2020-01-16 18:03:22,401 INFO L226 Difference]: Without dead ends: 2987 [2020-01-16 18:03:22,401 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:03:22,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2987 states. [2020-01-16 18:03:22,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2987 to 1583. [2020-01-16 18:03:22,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:03:22,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7099 transitions. [2020-01-16 18:03:22,472 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7099 transitions. Word has length 28 [2020-01-16 18:03:22,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:22,472 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7099 transitions. [2020-01-16 18:03:22,472 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:22,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7099 transitions. [2020-01-16 18:03:22,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:22,474 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:22,475 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:22,475 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 18:03:22,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:22,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1257650620, now seen corresponding path program 38 times [2020-01-16 18:03:22,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:22,475 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995026262] [2020-01-16 18:03:22,475 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:22,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:23,022 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 18:03:23,022 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995026262] [2020-01-16 18:03:23,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:23,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:23,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438738977] [2020-01-16 18:03:23,023 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:23,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:23,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:23,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:23,023 INFO L87 Difference]: Start difference. First operand 1583 states and 7099 transitions. Second operand 11 states. [2020-01-16 18:03:23,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:23,192 INFO L93 Difference]: Finished difference Result 3007 states and 11915 transitions. [2020-01-16 18:03:23,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:23,193 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:23,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:23,200 INFO L225 Difference]: With dead ends: 3007 [2020-01-16 18:03:23,201 INFO L226 Difference]: Without dead ends: 2981 [2020-01-16 18:03:23,201 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:03:23,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2981 states. [2020-01-16 18:03:23,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2981 to 1577. [2020-01-16 18:03:23,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:03:23,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7082 transitions. [2020-01-16 18:03:23,282 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7082 transitions. Word has length 28 [2020-01-16 18:03:23,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:23,282 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7082 transitions. [2020-01-16 18:03:23,282 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:23,283 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7082 transitions. [2020-01-16 18:03:23,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:23,286 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:23,286 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 18:03:23,286 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 18:03:23,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:23,286 INFO L82 PathProgramCache]: Analyzing trace with hash 843956780, now seen corresponding path program 39 times [2020-01-16 18:03:23,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:23,287 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215238260] [2020-01-16 18:03:23,287 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:23,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:23,847 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 18:03:23,848 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215238260] [2020-01-16 18:03:23,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:23,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:23,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619903399] [2020-01-16 18:03:23,848 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:23,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:23,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:23,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:23,849 INFO L87 Difference]: Start difference. First operand 1577 states and 7082 transitions. Second operand 11 states. [2020-01-16 18:03:24,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:24,045 INFO L93 Difference]: Finished difference Result 2998 states and 11898 transitions. [2020-01-16 18:03:24,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:24,046 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:24,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:24,053 INFO L225 Difference]: With dead ends: 2998 [2020-01-16 18:03:24,053 INFO L226 Difference]: Without dead ends: 2983 [2020-01-16 18:03:24,053 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 18:03:24,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2983 states. [2020-01-16 18:03:24,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2983 to 1582. [2020-01-16 18:03:24,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 18:03:24,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7091 transitions. [2020-01-16 18:03:24,121 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7091 transitions. Word has length 28 [2020-01-16 18:03:24,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:24,121 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7091 transitions. [2020-01-16 18:03:24,121 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:24,121 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7091 transitions. [2020-01-16 18:03:24,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:24,123 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:24,123 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 18:03:24,124 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 18:03:24,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:24,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1788357828, now seen corresponding path program 40 times [2020-01-16 18:03:24,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:24,124 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346380604] [2020-01-16 18:03:24,124 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:24,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:24,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:24,657 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346380604] [2020-01-16 18:03:24,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:24,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:24,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325690876] [2020-01-16 18:03:24,657 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:24,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:24,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:24,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:24,658 INFO L87 Difference]: Start difference. First operand 1582 states and 7091 transitions. Second operand 11 states. [2020-01-16 18:03:24,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:24,873 INFO L93 Difference]: Finished difference Result 3000 states and 11897 transitions. [2020-01-16 18:03:24,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:24,873 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:24,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:24,881 INFO L225 Difference]: With dead ends: 3000 [2020-01-16 18:03:24,881 INFO L226 Difference]: Without dead ends: 2978 [2020-01-16 18:03:24,881 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 18:03:24,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2978 states. [2020-01-16 18:03:24,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2978 to 1577. [2020-01-16 18:03:24,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:03:24,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7077 transitions. [2020-01-16 18:03:24,948 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7077 transitions. Word has length 28 [2020-01-16 18:03:24,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:24,948 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7077 transitions. [2020-01-16 18:03:24,948 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:24,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7077 transitions. [2020-01-16 18:03:24,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:24,951 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:24,951 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 18:03:24,951 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 18:03:24,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:24,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1260276396, now seen corresponding path program 41 times [2020-01-16 18:03:24,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:24,951 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917162175] [2020-01-16 18:03:24,951 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:24,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:25,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:25,514 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917162175] [2020-01-16 18:03:25,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:25,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:25,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884452416] [2020-01-16 18:03:25,514 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:25,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:25,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:25,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:25,515 INFO L87 Difference]: Start difference. First operand 1577 states and 7077 transitions. Second operand 11 states. [2020-01-16 18:03:25,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:25,749 INFO L93 Difference]: Finished difference Result 3011 states and 11919 transitions. [2020-01-16 18:03:25,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:25,750 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:25,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:25,757 INFO L225 Difference]: With dead ends: 3011 [2020-01-16 18:03:25,757 INFO L226 Difference]: Without dead ends: 2991 [2020-01-16 18:03:25,758 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 18:03:25,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2991 states. [2020-01-16 18:03:25,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2991 to 1585. [2020-01-16 18:03:25,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 18:03:25,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7091 transitions. [2020-01-16 18:03:25,874 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7091 transitions. Word has length 28 [2020-01-16 18:03:25,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:25,875 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7091 transitions. [2020-01-16 18:03:25,875 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:25,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7091 transitions. [2020-01-16 18:03:25,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:25,878 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:25,878 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 18:03:25,878 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 18:03:25,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:25,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1433524088, now seen corresponding path program 42 times [2020-01-16 18:03:25,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:25,879 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228628625] [2020-01-16 18:03:25,879 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:25,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:26,412 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 18:03:26,413 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228628625] [2020-01-16 18:03:26,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:26,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:26,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927557027] [2020-01-16 18:03:26,413 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:26,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:26,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:26,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:26,414 INFO L87 Difference]: Start difference. First operand 1585 states and 7091 transitions. Second operand 11 states. [2020-01-16 18:03:26,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:26,687 INFO L93 Difference]: Finished difference Result 3008 states and 11906 transitions. [2020-01-16 18:03:26,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:26,688 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:26,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:26,695 INFO L225 Difference]: With dead ends: 3008 [2020-01-16 18:03:26,695 INFO L226 Difference]: Without dead ends: 2977 [2020-01-16 18:03:26,695 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:03:26,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2977 states. [2020-01-16 18:03:26,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2977 to 1571. [2020-01-16 18:03:26,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:03:26,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7060 transitions. [2020-01-16 18:03:26,764 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7060 transitions. Word has length 28 [2020-01-16 18:03:26,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:26,764 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7060 transitions. [2020-01-16 18:03:26,764 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:26,764 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7060 transitions. [2020-01-16 18:03:26,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:26,767 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:26,767 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:26,767 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 18:03:26,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:26,767 INFO L82 PathProgramCache]: Analyzing trace with hash 523451226, now seen corresponding path program 43 times [2020-01-16 18:03:26,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:26,768 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112843132] [2020-01-16 18:03:26,768 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:26,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:27,334 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 18:03:27,334 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112843132] [2020-01-16 18:03:27,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:27,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:27,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694921974] [2020-01-16 18:03:27,335 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:27,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:27,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:27,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:27,336 INFO L87 Difference]: Start difference. First operand 1571 states and 7060 transitions. Second operand 11 states. [2020-01-16 18:03:27,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:27,601 INFO L93 Difference]: Finished difference Result 3009 states and 11924 transitions. [2020-01-16 18:03:27,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:27,602 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:27,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:27,609 INFO L225 Difference]: With dead ends: 3009 [2020-01-16 18:03:27,610 INFO L226 Difference]: Without dead ends: 2993 [2020-01-16 18:03:27,610 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 18:03:27,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2993 states. [2020-01-16 18:03:27,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2993 to 1585. [2020-01-16 18:03:27,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 18:03:27,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7099 transitions. [2020-01-16 18:03:27,678 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7099 transitions. Word has length 28 [2020-01-16 18:03:27,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:27,678 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7099 transitions. [2020-01-16 18:03:27,678 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:27,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7099 transitions. [2020-01-16 18:03:27,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:27,681 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:27,681 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 18:03:27,681 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 18:03:27,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:27,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1268153724, now seen corresponding path program 44 times [2020-01-16 18:03:27,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:27,682 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769401919] [2020-01-16 18:03:27,682 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:27,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:28,246 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 18:03:28,246 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769401919] [2020-01-16 18:03:28,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:28,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:28,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230578257] [2020-01-16 18:03:28,247 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:28,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:28,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:28,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:28,247 INFO L87 Difference]: Start difference. First operand 1585 states and 7099 transitions. Second operand 11 states. [2020-01-16 18:03:28,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:28,493 INFO L93 Difference]: Finished difference Result 3013 states and 11925 transitions. [2020-01-16 18:03:28,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:28,493 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:28,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:28,501 INFO L225 Difference]: With dead ends: 3013 [2020-01-16 18:03:28,501 INFO L226 Difference]: Without dead ends: 2986 [2020-01-16 18:03:28,501 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 18:03:28,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2986 states. [2020-01-16 18:03:28,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2986 to 1578. [2020-01-16 18:03:28,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:03:28,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7079 transitions. [2020-01-16 18:03:28,568 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7079 transitions. Word has length 28 [2020-01-16 18:03:28,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:28,569 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7079 transitions. [2020-01-16 18:03:28,569 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:28,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7079 transitions. [2020-01-16 18:03:28,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:28,571 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:28,571 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 18:03:28,571 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 18:03:28,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:28,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1599162382, now seen corresponding path program 45 times [2020-01-16 18:03:28,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:28,572 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637119696] [2020-01-16 18:03:28,572 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:28,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:29,129 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 18:03:29,129 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637119696] [2020-01-16 18:03:29,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:29,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:29,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780691548] [2020-01-16 18:03:29,129 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:29,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:29,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:29,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:29,130 INFO L87 Difference]: Start difference. First operand 1578 states and 7079 transitions. Second operand 11 states. [2020-01-16 18:03:29,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:29,325 INFO L93 Difference]: Finished difference Result 3005 states and 11910 transitions. [2020-01-16 18:03:29,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:29,326 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:29,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:29,333 INFO L225 Difference]: With dead ends: 3005 [2020-01-16 18:03:29,333 INFO L226 Difference]: Without dead ends: 2989 [2020-01-16 18:03:29,333 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 18:03:29,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2020-01-16 18:03:29,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 1584. [2020-01-16 18:03:29,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1584 states. [2020-01-16 18:03:29,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 7090 transitions. [2020-01-16 18:03:29,401 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 7090 transitions. Word has length 28 [2020-01-16 18:03:29,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:29,401 INFO L478 AbstractCegarLoop]: Abstraction has 1584 states and 7090 transitions. [2020-01-16 18:03:29,401 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:29,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 7090 transitions. [2020-01-16 18:03:29,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:29,403 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:29,403 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 18:03:29,403 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 18:03:29,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:29,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1777854724, now seen corresponding path program 46 times [2020-01-16 18:03:29,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:29,404 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260088221] [2020-01-16 18:03:29,404 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:29,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:29,957 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 18:03:29,957 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260088221] [2020-01-16 18:03:29,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:29,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:29,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415990659] [2020-01-16 18:03:29,958 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:29,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:29,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:29,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:29,960 INFO L87 Difference]: Start difference. First operand 1584 states and 7090 transitions. Second operand 11 states. [2020-01-16 18:03:30,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:30,140 INFO L93 Difference]: Finished difference Result 3006 states and 11906 transitions. [2020-01-16 18:03:30,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:30,140 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:30,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:30,149 INFO L225 Difference]: With dead ends: 3006 [2020-01-16 18:03:30,149 INFO L226 Difference]: Without dead ends: 2983 [2020-01-16 18:03:30,149 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:03:30,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2983 states. [2020-01-16 18:03:30,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2983 to 1578. [2020-01-16 18:03:30,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:03:30,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7073 transitions. [2020-01-16 18:03:30,287 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7073 transitions. Word has length 28 [2020-01-16 18:03:30,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:30,288 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7073 transitions. [2020-01-16 18:03:30,288 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:30,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7073 transitions. [2020-01-16 18:03:30,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:30,293 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:30,293 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:30,293 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 18:03:30,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:30,294 INFO L82 PathProgramCache]: Analyzing trace with hash -340161458, now seen corresponding path program 47 times [2020-01-16 18:03:30,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:30,294 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799168655] [2020-01-16 18:03:30,294 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:30,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:30,851 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:03:30,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:30,859 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799168655] [2020-01-16 18:03:30,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:30,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:30,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492358345] [2020-01-16 18:03:30,860 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:30,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:30,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:30,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:30,860 INFO L87 Difference]: Start difference. First operand 1578 states and 7073 transitions. Second operand 11 states. [2020-01-16 18:03:31,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:31,006 INFO L93 Difference]: Finished difference Result 3015 states and 11923 transitions. [2020-01-16 18:03:31,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:31,007 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:31,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:31,014 INFO L225 Difference]: With dead ends: 3015 [2020-01-16 18:03:31,014 INFO L226 Difference]: Without dead ends: 2995 [2020-01-16 18:03:31,014 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 18:03:31,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2995 states. [2020-01-16 18:03:31,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2995 to 1586. [2020-01-16 18:03:31,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1586 states. [2020-01-16 18:03:31,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 7087 transitions. [2020-01-16 18:03:31,082 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 7087 transitions. Word has length 28 [2020-01-16 18:03:31,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:31,082 INFO L478 AbstractCegarLoop]: Abstraction has 1586 states and 7087 transitions. [2020-01-16 18:03:31,082 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:31,082 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 7087 transitions. [2020-01-16 18:03:31,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:31,085 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:31,085 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 18:03:31,085 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 18:03:31,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:31,085 INFO L82 PathProgramCache]: Analyzing trace with hash -166913766, now seen corresponding path program 48 times [2020-01-16 18:03:31,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:31,085 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695071927] [2020-01-16 18:03:31,085 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:31,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:31,624 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 18:03:31,624 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695071927] [2020-01-16 18:03:31,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:31,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:31,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773216801] [2020-01-16 18:03:31,625 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:31,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:31,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:31,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:31,625 INFO L87 Difference]: Start difference. First operand 1586 states and 7087 transitions. Second operand 11 states. [2020-01-16 18:03:31,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:31,807 INFO L93 Difference]: Finished difference Result 3012 states and 11910 transitions. [2020-01-16 18:03:31,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:31,808 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:31,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:31,815 INFO L225 Difference]: With dead ends: 3012 [2020-01-16 18:03:31,815 INFO L226 Difference]: Without dead ends: 2974 [2020-01-16 18:03:31,815 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 18:03:31,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2974 states. [2020-01-16 18:03:31,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2974 to 1565. [2020-01-16 18:03:31,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 18:03:31,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7043 transitions. [2020-01-16 18:03:31,883 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7043 transitions. Word has length 28 [2020-01-16 18:03:31,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:31,883 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7043 transitions. [2020-01-16 18:03:31,883 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:31,883 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7043 transitions. [2020-01-16 18:03:31,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:31,886 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:31,886 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 18:03:31,886 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 18:03:31,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:31,886 INFO L82 PathProgramCache]: Analyzing trace with hash 15547412, now seen corresponding path program 49 times [2020-01-16 18:03:31,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:31,886 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358983226] [2020-01-16 18:03:31,887 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:31,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:32,426 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 18:03:32,427 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358983226] [2020-01-16 18:03:32,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:32,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:32,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656106170] [2020-01-16 18:03:32,427 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:32,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:32,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:32,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:32,428 INFO L87 Difference]: Start difference. First operand 1565 states and 7043 transitions. Second operand 11 states. [2020-01-16 18:03:32,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:32,611 INFO L93 Difference]: Finished difference Result 2981 states and 11870 transitions. [2020-01-16 18:03:32,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:32,611 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:32,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:32,619 INFO L225 Difference]: With dead ends: 2981 [2020-01-16 18:03:32,619 INFO L226 Difference]: Without dead ends: 2966 [2020-01-16 18:03:32,620 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:03:32,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2966 states. [2020-01-16 18:03:32,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2966 to 1580. [2020-01-16 18:03:32,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:03:32,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7095 transitions. [2020-01-16 18:03:32,687 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7095 transitions. Word has length 28 [2020-01-16 18:03:32,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:32,687 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7095 transitions. [2020-01-16 18:03:32,687 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:32,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7095 transitions. [2020-01-16 18:03:32,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:32,690 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:32,690 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 18:03:32,690 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 18:03:32,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:32,690 INFO L82 PathProgramCache]: Analyzing trace with hash 760249910, now seen corresponding path program 50 times [2020-01-16 18:03:32,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:32,690 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065185102] [2020-01-16 18:03:32,690 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:32,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:33,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:33,240 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065185102] [2020-01-16 18:03:33,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:33,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:33,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487299972] [2020-01-16 18:03:33,240 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:33,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:33,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:33,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:33,241 INFO L87 Difference]: Start difference. First operand 1580 states and 7095 transitions. Second operand 11 states. [2020-01-16 18:03:33,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:33,414 INFO L93 Difference]: Finished difference Result 2982 states and 11867 transitions. [2020-01-16 18:03:33,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:33,415 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:33,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:33,422 INFO L225 Difference]: With dead ends: 2982 [2020-01-16 18:03:33,423 INFO L226 Difference]: Without dead ends: 2961 [2020-01-16 18:03:33,423 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 18:03:33,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2020-01-16 18:03:33,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 1575. [2020-01-16 18:03:33,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:03:33,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7081 transitions. [2020-01-16 18:03:33,490 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7081 transitions. Word has length 28 [2020-01-16 18:03:33,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:33,490 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7081 transitions. [2020-01-16 18:03:33,490 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:33,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7081 transitions. [2020-01-16 18:03:33,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:33,492 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:33,492 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 18:03:33,492 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 18:03:33,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:33,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1057537968, now seen corresponding path program 51 times [2020-01-16 18:03:33,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:33,493 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780099312] [2020-01-16 18:03:33,493 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:33,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:34,016 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 18:03:34,016 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780099312] [2020-01-16 18:03:34,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:34,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:34,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282539996] [2020-01-16 18:03:34,017 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:34,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:34,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:34,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:34,017 INFO L87 Difference]: Start difference. First operand 1575 states and 7081 transitions. Second operand 11 states. [2020-01-16 18:03:34,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:34,195 INFO L93 Difference]: Finished difference Result 2983 states and 11869 transitions. [2020-01-16 18:03:34,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:34,196 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:34,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:34,204 INFO L225 Difference]: With dead ends: 2983 [2020-01-16 18:03:34,204 INFO L226 Difference]: Without dead ends: 2968 [2020-01-16 18:03:34,204 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:03:34,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2968 states. [2020-01-16 18:03:34,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2968 to 1580. [2020-01-16 18:03:34,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:03:34,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7090 transitions. [2020-01-16 18:03:34,273 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7090 transitions. Word has length 28 [2020-01-16 18:03:34,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:34,273 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7090 transitions. [2020-01-16 18:03:34,273 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:34,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7090 transitions. [2020-01-16 18:03:34,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:34,276 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:34,276 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 18:03:34,276 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 18:03:34,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:34,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1176569526, now seen corresponding path program 52 times [2020-01-16 18:03:34,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:34,276 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336802060] [2020-01-16 18:03:34,277 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:34,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:34,632 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 26 [2020-01-16 18:03:34,856 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:03:34,863 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 18:03:34,863 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336802060] [2020-01-16 18:03:34,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:34,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:34,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724356683] [2020-01-16 18:03:34,864 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:34,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:34,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:34,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:34,864 INFO L87 Difference]: Start difference. First operand 1580 states and 7090 transitions. Second operand 11 states. [2020-01-16 18:03:35,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:35,044 INFO L93 Difference]: Finished difference Result 2986 states and 11870 transitions. [2020-01-16 18:03:35,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:35,045 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:35,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:35,052 INFO L225 Difference]: With dead ends: 2986 [2020-01-16 18:03:35,052 INFO L226 Difference]: Without dead ends: 2963 [2020-01-16 18:03:35,053 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 18:03:35,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2963 states. [2020-01-16 18:03:35,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2963 to 1575. [2020-01-16 18:03:35,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:03:35,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7076 transitions. [2020-01-16 18:03:35,120 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7076 transitions. Word has length 28 [2020-01-16 18:03:35,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:35,120 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7076 transitions. [2020-01-16 18:03:35,120 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:35,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7076 transitions. [2020-01-16 18:03:35,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:35,122 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:35,122 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 18:03:35,122 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 18:03:35,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:35,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1298105488, now seen corresponding path program 53 times [2020-01-16 18:03:35,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:35,123 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612600670] [2020-01-16 18:03:35,123 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:35,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:35,672 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 18:03:35,673 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612600670] [2020-01-16 18:03:35,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:35,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:35,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024666356] [2020-01-16 18:03:35,673 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:35,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:35,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:35,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:35,674 INFO L87 Difference]: Start difference. First operand 1575 states and 7076 transitions. Second operand 11 states. [2020-01-16 18:03:35,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:35,851 INFO L93 Difference]: Finished difference Result 2986 states and 11871 transitions. [2020-01-16 18:03:35,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:35,851 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:35,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:35,858 INFO L225 Difference]: With dead ends: 2986 [2020-01-16 18:03:35,858 INFO L226 Difference]: Without dead ends: 2970 [2020-01-16 18:03:35,859 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 18:03:35,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2970 states. [2020-01-16 18:03:35,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2970 to 1581. [2020-01-16 18:03:35,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:03:35,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7087 transitions. [2020-01-16 18:03:35,927 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7087 transitions. Word has length 28 [2020-01-16 18:03:35,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:35,927 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7087 transitions. [2020-01-16 18:03:35,927 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:35,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7087 transitions. [2020-01-16 18:03:35,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:35,929 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:35,929 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 18:03:35,930 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 18:03:35,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:35,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1507456812, now seen corresponding path program 54 times [2020-01-16 18:03:35,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:35,930 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010667411] [2020-01-16 18:03:35,930 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:35,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:36,496 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 18:03:36,496 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010667411] [2020-01-16 18:03:36,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:36,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:36,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397508970] [2020-01-16 18:03:36,497 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:36,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:36,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:36,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:36,497 INFO L87 Difference]: Start difference. First operand 1581 states and 7087 transitions. Second operand 11 states. [2020-01-16 18:03:36,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:36,672 INFO L93 Difference]: Finished difference Result 2988 states and 11869 transitions. [2020-01-16 18:03:36,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:36,672 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:36,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:36,679 INFO L225 Difference]: With dead ends: 2988 [2020-01-16 18:03:36,680 INFO L226 Difference]: Without dead ends: 2959 [2020-01-16 18:03:36,680 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 18:03:36,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2959 states. [2020-01-16 18:03:36,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2959 to 1570. [2020-01-16 18:03:36,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:03:36,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7062 transitions. [2020-01-16 18:03:36,747 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7062 transitions. Word has length 28 [2020-01-16 18:03:36,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:36,747 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7062 transitions. [2020-01-16 18:03:36,747 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:36,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7062 transitions. [2020-01-16 18:03:36,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:36,749 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:36,749 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 18:03:36,750 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 18:03:36,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:36,750 INFO L82 PathProgramCache]: Analyzing trace with hash 603292734, now seen corresponding path program 55 times [2020-01-16 18:03:36,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:36,750 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816419411] [2020-01-16 18:03:36,750 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:36,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:37,295 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 18:03:37,295 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816419411] [2020-01-16 18:03:37,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:37,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:37,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439815533] [2020-01-16 18:03:37,296 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:37,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:37,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:37,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:37,296 INFO L87 Difference]: Start difference. First operand 1570 states and 7062 transitions. Second operand 11 states. [2020-01-16 18:03:37,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:37,466 INFO L93 Difference]: Finished difference Result 2980 states and 11863 transitions. [2020-01-16 18:03:37,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:37,467 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:37,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:37,474 INFO L225 Difference]: With dead ends: 2980 [2020-01-16 18:03:37,474 INFO L226 Difference]: Without dead ends: 2965 [2020-01-16 18:03:37,474 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 18:03:37,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2965 states. [2020-01-16 18:03:37,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2965 to 1580. [2020-01-16 18:03:37,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:03:37,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7090 transitions. [2020-01-16 18:03:37,541 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7090 transitions. Word has length 28 [2020-01-16 18:03:37,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:37,542 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7090 transitions. [2020-01-16 18:03:37,542 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:37,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7090 transitions. [2020-01-16 18:03:37,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:37,544 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:37,544 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 18:03:37,544 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 18:03:37,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:37,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1347995232, now seen corresponding path program 56 times [2020-01-16 18:03:37,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:37,545 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901462982] [2020-01-16 18:03:37,545 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:37,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:38,082 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 32 [2020-01-16 18:03:38,089 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 18:03:38,089 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901462982] [2020-01-16 18:03:38,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:38,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:38,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278405062] [2020-01-16 18:03:38,090 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:38,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:38,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:38,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:38,091 INFO L87 Difference]: Start difference. First operand 1580 states and 7090 transitions. Second operand 11 states. [2020-01-16 18:03:38,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:38,290 INFO L93 Difference]: Finished difference Result 2981 states and 11860 transitions. [2020-01-16 18:03:38,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:38,291 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:38,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:38,299 INFO L225 Difference]: With dead ends: 2981 [2020-01-16 18:03:38,299 INFO L226 Difference]: Without dead ends: 2960 [2020-01-16 18:03:38,299 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:03:38,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2960 states. [2020-01-16 18:03:38,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2960 to 1575. [2020-01-16 18:03:38,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:03:38,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7076 transitions. [2020-01-16 18:03:38,366 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7076 transitions. Word has length 28 [2020-01-16 18:03:38,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:38,367 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7076 transitions. [2020-01-16 18:03:38,367 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:38,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7076 transitions. [2020-01-16 18:03:38,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:38,370 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:38,370 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 18:03:38,370 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 18:03:38,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:38,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1005022448, now seen corresponding path program 57 times [2020-01-16 18:03:38,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:38,370 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67566425] [2020-01-16 18:03:38,371 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:38,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:38,925 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 18:03:38,926 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67566425] [2020-01-16 18:03:38,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:38,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:38,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440580264] [2020-01-16 18:03:38,926 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:38,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:38,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:38,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:38,927 INFO L87 Difference]: Start difference. First operand 1575 states and 7076 transitions. Second operand 11 states. [2020-01-16 18:03:39,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:39,229 INFO L93 Difference]: Finished difference Result 2981 states and 11860 transitions. [2020-01-16 18:03:39,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:39,229 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:39,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:39,240 INFO L225 Difference]: With dead ends: 2981 [2020-01-16 18:03:39,241 INFO L226 Difference]: Without dead ends: 2966 [2020-01-16 18:03:39,241 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 18:03:39,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2966 states. [2020-01-16 18:03:39,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2966 to 1580. [2020-01-16 18:03:39,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:03:39,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7085 transitions. [2020-01-16 18:03:39,364 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7085 transitions. Word has length 28 [2020-01-16 18:03:39,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:39,365 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7085 transitions. [2020-01-16 18:03:39,365 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:39,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7085 transitions. [2020-01-16 18:03:39,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:39,369 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:39,369 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:39,369 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 18:03:39,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:39,369 INFO L82 PathProgramCache]: Analyzing trace with hash 657630240, now seen corresponding path program 58 times [2020-01-16 18:03:39,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:39,370 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252196852] [2020-01-16 18:03:39,370 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:39,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:39,920 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 18:03:39,920 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252196852] [2020-01-16 18:03:39,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:39,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:39,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423581899] [2020-01-16 18:03:39,921 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:39,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:39,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:39,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:39,922 INFO L87 Difference]: Start difference. First operand 1580 states and 7085 transitions. Second operand 11 states. [2020-01-16 18:03:40,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:40,105 INFO L93 Difference]: Finished difference Result 2983 states and 11859 transitions. [2020-01-16 18:03:40,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:40,106 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:40,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:40,113 INFO L225 Difference]: With dead ends: 2983 [2020-01-16 18:03:40,114 INFO L226 Difference]: Without dead ends: 2961 [2020-01-16 18:03:40,114 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:03:40,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2020-01-16 18:03:40,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 1575. [2020-01-16 18:03:40,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:03:40,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7071 transitions. [2020-01-16 18:03:40,181 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7071 transitions. Word has length 28 [2020-01-16 18:03:40,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:40,182 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7071 transitions. [2020-01-16 18:03:40,182 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:40,182 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7071 transitions. [2020-01-16 18:03:40,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:40,184 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:40,184 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:40,184 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 18:03:40,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:40,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1350621008, now seen corresponding path program 59 times [2020-01-16 18:03:40,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:40,185 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957286552] [2020-01-16 18:03:40,185 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:40,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:40,737 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 18:03:40,737 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957286552] [2020-01-16 18:03:40,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:40,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:40,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789277000] [2020-01-16 18:03:40,738 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:40,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:40,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:40,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:40,738 INFO L87 Difference]: Start difference. First operand 1575 states and 7071 transitions. Second operand 11 states. [2020-01-16 18:03:40,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:40,909 INFO L93 Difference]: Finished difference Result 2984 states and 11862 transitions. [2020-01-16 18:03:40,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:40,910 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:40,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:40,918 INFO L225 Difference]: With dead ends: 2984 [2020-01-16 18:03:40,918 INFO L226 Difference]: Without dead ends: 2968 [2020-01-16 18:03:40,918 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:03:40,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2968 states. [2020-01-16 18:03:40,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2968 to 1581. [2020-01-16 18:03:40,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:03:40,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7082 transitions. [2020-01-16 18:03:40,986 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7082 transitions. Word has length 28 [2020-01-16 18:03:40,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:40,986 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7082 transitions. [2020-01-16 18:03:40,986 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:40,986 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7082 transitions. [2020-01-16 18:03:40,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:40,989 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:40,989 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 18:03:40,989 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 18:03:40,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:40,989 INFO L82 PathProgramCache]: Analyzing trace with hash -2026396098, now seen corresponding path program 60 times [2020-01-16 18:03:40,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:40,989 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072855142] [2020-01-16 18:03:40,990 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:40,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:41,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:41,553 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072855142] [2020-01-16 18:03:41,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:41,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:41,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980689229] [2020-01-16 18:03:41,554 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:41,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:41,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:41,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:41,555 INFO L87 Difference]: Start difference. First operand 1581 states and 7082 transitions. Second operand 11 states. [2020-01-16 18:03:41,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:41,741 INFO L93 Difference]: Finished difference Result 2985 states and 11858 transitions. [2020-01-16 18:03:41,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:41,741 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:41,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:41,749 INFO L225 Difference]: With dead ends: 2985 [2020-01-16 18:03:41,749 INFO L226 Difference]: Without dead ends: 2957 [2020-01-16 18:03:41,749 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 18:03:41,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2957 states. [2020-01-16 18:03:41,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2957 to 1570. [2020-01-16 18:03:41,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:03:41,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7057 transitions. [2020-01-16 18:03:41,816 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7057 transitions. Word has length 28 [2020-01-16 18:03:41,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:41,816 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7057 transitions. [2020-01-16 18:03:41,816 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:41,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7057 transitions. [2020-01-16 18:03:41,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:41,818 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:41,819 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:41,819 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 18:03:41,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:41,819 INFO L82 PathProgramCache]: Analyzing trace with hash 624298942, now seen corresponding path program 61 times [2020-01-16 18:03:41,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:41,819 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480595557] [2020-01-16 18:03:41,819 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:41,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:42,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:42,358 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480595557] [2020-01-16 18:03:42,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:42,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:42,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061854031] [2020-01-16 18:03:42,359 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:42,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:42,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:42,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:42,359 INFO L87 Difference]: Start difference. First operand 1570 states and 7057 transitions. Second operand 11 states. [2020-01-16 18:03:42,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:42,553 INFO L93 Difference]: Finished difference Result 2985 states and 11869 transitions. [2020-01-16 18:03:42,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:42,553 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:42,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:42,560 INFO L225 Difference]: With dead ends: 2985 [2020-01-16 18:03:42,561 INFO L226 Difference]: Without dead ends: 2970 [2020-01-16 18:03:42,561 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:03:42,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2970 states. [2020-01-16 18:03:42,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2970 to 1580. [2020-01-16 18:03:42,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:03:42,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7085 transitions. [2020-01-16 18:03:42,628 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7085 transitions. Word has length 28 [2020-01-16 18:03:42,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:42,629 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7085 transitions. [2020-01-16 18:03:42,629 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:42,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7085 transitions. [2020-01-16 18:03:42,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:42,631 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:42,631 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:42,631 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 18:03:42,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:42,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1436560860, now seen corresponding path program 62 times [2020-01-16 18:03:42,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:42,632 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702031777] [2020-01-16 18:03:42,632 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:42,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:43,172 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 18:03:43,172 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702031777] [2020-01-16 18:03:43,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:43,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:43,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292855867] [2020-01-16 18:03:43,173 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:43,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:43,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:43,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:43,173 INFO L87 Difference]: Start difference. First operand 1580 states and 7085 transitions. Second operand 11 states. [2020-01-16 18:03:43,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:43,358 INFO L93 Difference]: Finished difference Result 2988 states and 11870 transitions. [2020-01-16 18:03:43,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:43,358 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:43,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:43,366 INFO L225 Difference]: With dead ends: 2988 [2020-01-16 18:03:43,366 INFO L226 Difference]: Without dead ends: 2965 [2020-01-16 18:03:43,366 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 18:03:43,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2965 states. [2020-01-16 18:03:43,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2965 to 1575. [2020-01-16 18:03:43,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:03:43,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7071 transitions. [2020-01-16 18:03:43,433 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7071 transitions. Word has length 28 [2020-01-16 18:03:43,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:43,433 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7071 transitions. [2020-01-16 18:03:43,433 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:43,433 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7071 transitions. [2020-01-16 18:03:43,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:43,436 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:43,436 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 18:03:43,436 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 18:03:43,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:43,436 INFO L82 PathProgramCache]: Analyzing trace with hash 89069140, now seen corresponding path program 63 times [2020-01-16 18:03:43,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:43,436 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591795258] [2020-01-16 18:03:43,436 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:43,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:44,024 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 18:03:44,025 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591795258] [2020-01-16 18:03:44,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:44,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:44,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55481269] [2020-01-16 18:03:44,025 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:44,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:44,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:44,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:44,026 INFO L87 Difference]: Start difference. First operand 1575 states and 7071 transitions. Second operand 11 states. [2020-01-16 18:03:44,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:44,204 INFO L93 Difference]: Finished difference Result 2984 states and 11862 transitions. [2020-01-16 18:03:44,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:44,205 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:44,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:44,212 INFO L225 Difference]: With dead ends: 2984 [2020-01-16 18:03:44,213 INFO L226 Difference]: Without dead ends: 2969 [2020-01-16 18:03:44,213 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 18:03:44,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2969 states. [2020-01-16 18:03:44,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2969 to 1580. [2020-01-16 18:03:44,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:03:44,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7080 transitions. [2020-01-16 18:03:44,280 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7080 transitions. Word has length 28 [2020-01-16 18:03:44,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:44,281 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7080 transitions. [2020-01-16 18:03:44,281 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:44,281 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7080 transitions. [2020-01-16 18:03:44,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:44,283 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:44,283 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:44,283 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 18:03:44,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:44,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1751721828, now seen corresponding path program 64 times [2020-01-16 18:03:44,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:44,284 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521335187] [2020-01-16 18:03:44,284 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:44,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:44,822 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 18:03:44,822 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521335187] [2020-01-16 18:03:44,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:44,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:44,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741222125] [2020-01-16 18:03:44,823 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:44,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:44,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:44,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:44,823 INFO L87 Difference]: Start difference. First operand 1580 states and 7080 transitions. Second operand 11 states. [2020-01-16 18:03:45,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:45,004 INFO L93 Difference]: Finished difference Result 2986 states and 11861 transitions. [2020-01-16 18:03:45,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:45,004 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:45,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:45,011 INFO L225 Difference]: With dead ends: 2986 [2020-01-16 18:03:45,012 INFO L226 Difference]: Without dead ends: 2964 [2020-01-16 18:03:45,012 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:03:45,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2964 states. [2020-01-16 18:03:45,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2964 to 1575. [2020-01-16 18:03:45,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:03:45,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7066 transitions. [2020-01-16 18:03:45,079 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7066 transitions. Word has length 28 [2020-01-16 18:03:45,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:45,080 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7066 transitions. [2020-01-16 18:03:45,080 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:45,080 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7066 transitions. [2020-01-16 18:03:45,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:45,082 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:45,082 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:45,082 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 18:03:45,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:45,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1433935084, now seen corresponding path program 65 times [2020-01-16 18:03:45,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:45,083 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238520618] [2020-01-16 18:03:45,083 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:45,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:45,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:45,606 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238520618] [2020-01-16 18:03:45,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:45,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:45,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700560295] [2020-01-16 18:03:45,606 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:45,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:45,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:45,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:45,607 INFO L87 Difference]: Start difference. First operand 1575 states and 7066 transitions. Second operand 11 states. [2020-01-16 18:03:45,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:45,795 INFO L93 Difference]: Finished difference Result 2992 states and 11875 transitions. [2020-01-16 18:03:45,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:45,796 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:45,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:45,804 INFO L225 Difference]: With dead ends: 2992 [2020-01-16 18:03:45,804 INFO L226 Difference]: Without dead ends: 2974 [2020-01-16 18:03:45,805 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 18:03:45,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2974 states. [2020-01-16 18:03:45,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2974 to 1582. [2020-01-16 18:03:45,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 18:03:45,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7079 transitions. [2020-01-16 18:03:45,878 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7079 transitions. Word has length 28 [2020-01-16 18:03:45,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:45,878 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7079 transitions. [2020-01-16 18:03:45,878 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:45,878 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7079 transitions. [2020-01-16 18:03:45,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:45,880 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:45,881 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:45,881 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 18:03:45,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:45,881 INFO L82 PathProgramCache]: Analyzing trace with hash -2005389890, now seen corresponding path program 66 times [2020-01-16 18:03:45,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:45,881 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784289493] [2020-01-16 18:03:45,882 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:45,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:46,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:46,430 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784289493] [2020-01-16 18:03:46,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:46,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:46,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161107663] [2020-01-16 18:03:46,430 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:46,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:46,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:46,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:46,431 INFO L87 Difference]: Start difference. First operand 1582 states and 7079 transitions. Second operand 11 states. [2020-01-16 18:03:46,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:46,614 INFO L93 Difference]: Finished difference Result 2991 states and 11866 transitions. [2020-01-16 18:03:46,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:46,615 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:46,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:46,623 INFO L225 Difference]: With dead ends: 2991 [2020-01-16 18:03:46,623 INFO L226 Difference]: Without dead ends: 2962 [2020-01-16 18:03:46,623 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:03:46,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2962 states. [2020-01-16 18:03:46,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2962 to 1570. [2020-01-16 18:03:46,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:03:46,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7052 transitions. [2020-01-16 18:03:46,690 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7052 transitions. Word has length 28 [2020-01-16 18:03:46,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:46,691 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7052 transitions. [2020-01-16 18:03:46,691 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:46,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7052 transitions. [2020-01-16 18:03:46,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:46,693 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:46,693 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 18:03:46,693 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 18:03:46,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:46,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1379504544, now seen corresponding path program 67 times [2020-01-16 18:03:46,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:46,694 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917510249] [2020-01-16 18:03:46,694 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:46,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:47,234 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:03:47,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:47,241 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917510249] [2020-01-16 18:03:47,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:47,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:47,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066805914] [2020-01-16 18:03:47,242 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:47,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:47,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:47,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:47,242 INFO L87 Difference]: Start difference. First operand 1570 states and 7052 transitions. Second operand 11 states. [2020-01-16 18:03:47,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:47,435 INFO L93 Difference]: Finished difference Result 2992 states and 11883 transitions. [2020-01-16 18:03:47,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:47,436 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:47,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:47,443 INFO L225 Difference]: With dead ends: 2992 [2020-01-16 18:03:47,443 INFO L226 Difference]: Without dead ends: 2976 [2020-01-16 18:03:47,443 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 18:03:47,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2976 states. [2020-01-16 18:03:47,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2976 to 1582. [2020-01-16 18:03:47,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 18:03:47,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7086 transitions. [2020-01-16 18:03:47,511 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7086 transitions. Word has length 28 [2020-01-16 18:03:47,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:47,511 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7086 transitions. [2020-01-16 18:03:47,511 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:47,511 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7086 transitions. [2020-01-16 18:03:47,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:47,513 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:47,513 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:47,514 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 18:03:47,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:47,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1426057756, now seen corresponding path program 68 times [2020-01-16 18:03:47,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:47,514 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341354774] [2020-01-16 18:03:47,514 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:47,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:48,040 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:03:48,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:48,047 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341354774] [2020-01-16 18:03:48,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:48,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:48,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187913017] [2020-01-16 18:03:48,047 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:48,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:48,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:48,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:48,048 INFO L87 Difference]: Start difference. First operand 1582 states and 7086 transitions. Second operand 11 states. [2020-01-16 18:03:48,287 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2020-01-16 18:03:48,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:48,305 INFO L93 Difference]: Finished difference Result 2994 states and 11881 transitions. [2020-01-16 18:03:48,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:48,305 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:48,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:48,314 INFO L225 Difference]: With dead ends: 2994 [2020-01-16 18:03:48,314 INFO L226 Difference]: Without dead ends: 2970 [2020-01-16 18:03:48,314 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 18:03:48,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2970 states. [2020-01-16 18:03:48,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2970 to 1576. [2020-01-16 18:03:48,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:03:48,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7069 transitions. [2020-01-16 18:03:48,384 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7069 transitions. Word has length 28 [2020-01-16 18:03:48,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:48,385 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7069 transitions. [2020-01-16 18:03:48,385 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:48,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7069 transitions. [2020-01-16 18:03:48,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:48,387 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:48,388 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 18:03:48,388 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 18:03:48,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:48,388 INFO L82 PathProgramCache]: Analyzing trace with hash 844274742, now seen corresponding path program 69 times [2020-01-16 18:03:48,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:48,388 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783540701] [2020-01-16 18:03:48,388 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:48,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:48,938 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 18:03:48,938 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783540701] [2020-01-16 18:03:48,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:48,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:48,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064519234] [2020-01-16 18:03:48,939 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:48,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:48,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:48,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:48,940 INFO L87 Difference]: Start difference. First operand 1576 states and 7069 transitions. Second operand 11 states. [2020-01-16 18:03:49,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:49,122 INFO L93 Difference]: Finished difference Result 2991 states and 11875 transitions. [2020-01-16 18:03:49,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:49,122 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:49,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:49,129 INFO L225 Difference]: With dead ends: 2991 [2020-01-16 18:03:49,130 INFO L226 Difference]: Without dead ends: 2975 [2020-01-16 18:03:49,130 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:03:49,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2975 states. [2020-01-16 18:03:49,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2975 to 1582. [2020-01-16 18:03:49,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 18:03:49,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7080 transitions. [2020-01-16 18:03:49,200 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7080 transitions. Word has length 28 [2020-01-16 18:03:49,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:49,200 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7080 transitions. [2020-01-16 18:03:49,200 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:49,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7080 transitions. [2020-01-16 18:03:49,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:49,203 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:49,203 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 18:03:49,203 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 18:03:49,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:49,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1762224932, now seen corresponding path program 70 times [2020-01-16 18:03:49,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:49,204 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294162309] [2020-01-16 18:03:49,204 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:49,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:49,742 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 32 [2020-01-16 18:03:49,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:49,749 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294162309] [2020-01-16 18:03:49,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:49,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:49,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880411638] [2020-01-16 18:03:49,750 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:49,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:49,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:49,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:49,750 INFO L87 Difference]: Start difference. First operand 1582 states and 7080 transitions. Second operand 11 states. [2020-01-16 18:03:49,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:49,933 INFO L93 Difference]: Finished difference Result 2992 states and 11871 transitions. [2020-01-16 18:03:49,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:49,933 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:49,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:49,941 INFO L225 Difference]: With dead ends: 2992 [2020-01-16 18:03:49,941 INFO L226 Difference]: Without dead ends: 2969 [2020-01-16 18:03:49,941 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 18:03:49,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2969 states. [2020-01-16 18:03:50,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2969 to 1576. [2020-01-16 18:03:50,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:03:50,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7063 transitions. [2020-01-16 18:03:50,011 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7063 transitions. Word has length 28 [2020-01-16 18:03:50,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:50,011 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7063 transitions. [2020-01-16 18:03:50,011 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:50,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7063 transitions. [2020-01-16 18:03:50,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:50,013 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:50,013 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 18:03:50,014 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 18:03:50,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:50,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1260594358, now seen corresponding path program 71 times [2020-01-16 18:03:50,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:50,014 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959262052] [2020-01-16 18:03:50,014 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:50,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:50,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:50,558 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959262052] [2020-01-16 18:03:50,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:50,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:50,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400970298] [2020-01-16 18:03:50,559 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:50,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:50,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:50,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:50,559 INFO L87 Difference]: Start difference. First operand 1576 states and 7063 transitions. Second operand 11 states. [2020-01-16 18:03:50,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:50,765 INFO L93 Difference]: Finished difference Result 2996 states and 11880 transitions. [2020-01-16 18:03:50,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:50,765 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:50,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:50,773 INFO L225 Difference]: With dead ends: 2996 [2020-01-16 18:03:50,773 INFO L226 Difference]: Without dead ends: 2978 [2020-01-16 18:03:50,773 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:03:50,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2978 states. [2020-01-16 18:03:50,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2978 to 1583. [2020-01-16 18:03:50,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:03:50,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7076 transitions. [2020-01-16 18:03:50,842 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7076 transitions. Word has length 28 [2020-01-16 18:03:50,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:50,842 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7076 transitions. [2020-01-16 18:03:50,842 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:50,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7076 transitions. [2020-01-16 18:03:50,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:50,844 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:50,844 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 18:03:50,844 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 18:03:50,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:50,845 INFO L82 PathProgramCache]: Analyzing trace with hash 689139552, now seen corresponding path program 72 times [2020-01-16 18:03:50,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:50,845 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166277730] [2020-01-16 18:03:50,845 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:50,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:51,388 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 32 [2020-01-16 18:03:51,396 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 18:03:51,396 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166277730] [2020-01-16 18:03:51,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:51,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:51,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61918419] [2020-01-16 18:03:51,396 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:51,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:51,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:51,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:51,397 INFO L87 Difference]: Start difference. First operand 1583 states and 7076 transitions. Second operand 11 states. [2020-01-16 18:03:51,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:51,608 INFO L93 Difference]: Finished difference Result 2995 states and 11871 transitions. [2020-01-16 18:03:51,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:51,609 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:51,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:51,616 INFO L225 Difference]: With dead ends: 2995 [2020-01-16 18:03:51,617 INFO L226 Difference]: Without dead ends: 2960 [2020-01-16 18:03:51,617 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 18:03:51,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2960 states. [2020-01-16 18:03:51,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2960 to 1565. [2020-01-16 18:03:51,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 18:03:51,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7038 transitions. [2020-01-16 18:03:51,684 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7038 transitions. Word has length 28 [2020-01-16 18:03:51,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:51,684 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7038 transitions. [2020-01-16 18:03:51,684 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:51,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7038 transitions. [2020-01-16 18:03:51,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:51,686 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:51,686 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 18:03:51,686 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 18:03:51,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:51,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1952084594, now seen corresponding path program 73 times [2020-01-16 18:03:51,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:51,687 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144970573] [2020-01-16 18:03:51,687 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:51,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:52,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:52,226 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144970573] [2020-01-16 18:03:52,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:52,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:52,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780413259] [2020-01-16 18:03:52,226 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:52,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:52,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:52,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:52,227 INFO L87 Difference]: Start difference. First operand 1565 states and 7038 transitions. Second operand 11 states. [2020-01-16 18:03:52,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:52,405 INFO L93 Difference]: Finished difference Result 3018 states and 11947 transitions. [2020-01-16 18:03:52,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:52,406 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:52,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:52,413 INFO L225 Difference]: With dead ends: 3018 [2020-01-16 18:03:52,414 INFO L226 Difference]: Without dead ends: 3003 [2020-01-16 18:03:52,414 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:03:52,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3003 states. [2020-01-16 18:03:52,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3003 to 1586. [2020-01-16 18:03:52,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1586 states. [2020-01-16 18:03:52,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 7106 transitions. [2020-01-16 18:03:52,482 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 7106 transitions. Word has length 28 [2020-01-16 18:03:52,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:52,482 INFO L478 AbstractCegarLoop]: Abstraction has 1586 states and 7106 transitions. [2020-01-16 18:03:52,482 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:52,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 7106 transitions. [2020-01-16 18:03:52,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:52,484 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:52,484 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 18:03:52,484 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 18:03:52,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:52,485 INFO L82 PathProgramCache]: Analyzing trace with hash -853477706, now seen corresponding path program 74 times [2020-01-16 18:03:52,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:52,485 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017553934] [2020-01-16 18:03:52,485 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:52,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:53,075 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 18:03:53,075 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017553934] [2020-01-16 18:03:53,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:53,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:53,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300638417] [2020-01-16 18:03:53,076 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:53,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:53,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:53,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:53,077 INFO L87 Difference]: Start difference. First operand 1586 states and 7106 transitions. Second operand 11 states. [2020-01-16 18:03:53,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:53,222 INFO L93 Difference]: Finished difference Result 3023 states and 11951 transitions. [2020-01-16 18:03:53,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:53,222 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:53,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:53,230 INFO L225 Difference]: With dead ends: 3023 [2020-01-16 18:03:53,230 INFO L226 Difference]: Without dead ends: 2997 [2020-01-16 18:03:53,231 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 18:03:53,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2997 states. [2020-01-16 18:03:53,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2997 to 1580. [2020-01-16 18:03:53,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:03:53,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7089 transitions. [2020-01-16 18:03:53,298 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7089 transitions. Word has length 28 [2020-01-16 18:03:53,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:53,298 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7089 transitions. [2020-01-16 18:03:53,298 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:53,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7089 transitions. [2020-01-16 18:03:53,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:53,300 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:53,301 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 18:03:53,301 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 18:03:53,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:53,301 INFO L82 PathProgramCache]: Analyzing trace with hash -731941744, now seen corresponding path program 75 times [2020-01-16 18:03:53,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:53,301 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252737253] [2020-01-16 18:03:53,301 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:53,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:53,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:53,854 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252737253] [2020-01-16 18:03:53,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:53,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:53,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009358062] [2020-01-16 18:03:53,855 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:53,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:53,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:53,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:53,855 INFO L87 Difference]: Start difference. First operand 1580 states and 7089 transitions. Second operand 11 states. [2020-01-16 18:03:54,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:54,035 INFO L93 Difference]: Finished difference Result 3015 states and 11936 transitions. [2020-01-16 18:03:54,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:54,036 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:54,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:54,043 INFO L225 Difference]: With dead ends: 3015 [2020-01-16 18:03:54,044 INFO L226 Difference]: Without dead ends: 3000 [2020-01-16 18:03:54,044 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 18:03:54,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3000 states. [2020-01-16 18:03:54,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3000 to 1585. [2020-01-16 18:03:54,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 18:03:54,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7098 transitions. [2020-01-16 18:03:54,112 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7098 transitions. Word has length 28 [2020-01-16 18:03:54,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:54,112 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7098 transitions. [2020-01-16 18:03:54,112 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:54,112 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7098 transitions. [2020-01-16 18:03:54,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:54,114 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:54,114 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:54,114 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 18:03:54,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:54,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1502165750, now seen corresponding path program 76 times [2020-01-16 18:03:54,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:54,115 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744077841] [2020-01-16 18:03:54,115 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:54,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:54,667 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 18:03:54,667 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744077841] [2020-01-16 18:03:54,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:54,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:54,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130696828] [2020-01-16 18:03:54,668 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:54,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:54,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:54,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:54,668 INFO L87 Difference]: Start difference. First operand 1585 states and 7098 transitions. Second operand 11 states. [2020-01-16 18:03:54,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:54,893 INFO L93 Difference]: Finished difference Result 3018 states and 11937 transitions. [2020-01-16 18:03:54,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:54,894 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:54,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:54,901 INFO L225 Difference]: With dead ends: 3018 [2020-01-16 18:03:54,902 INFO L226 Difference]: Without dead ends: 2995 [2020-01-16 18:03:54,902 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 18:03:54,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2995 states. [2020-01-16 18:03:54,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2995 to 1580. [2020-01-16 18:03:54,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:03:54,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7084 transitions. [2020-01-16 18:03:54,971 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7084 transitions. Word has length 28 [2020-01-16 18:03:54,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:54,971 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7084 transitions. [2020-01-16 18:03:54,971 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:54,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7084 transitions. [2020-01-16 18:03:54,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:54,974 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:54,974 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:54,974 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 18:03:54,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:54,974 INFO L82 PathProgramCache]: Analyzing trace with hash -315622128, now seen corresponding path program 77 times [2020-01-16 18:03:54,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:54,975 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001478425] [2020-01-16 18:03:54,975 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:54,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:55,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:55,538 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001478425] [2020-01-16 18:03:55,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:55,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:55,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919653692] [2020-01-16 18:03:55,538 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:55,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:55,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:55,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:55,539 INFO L87 Difference]: Start difference. First operand 1580 states and 7084 transitions. Second operand 11 states. [2020-01-16 18:03:55,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:55,701 INFO L93 Difference]: Finished difference Result 3030 states and 11961 transitions. [2020-01-16 18:03:55,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:55,701 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:55,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:55,709 INFO L225 Difference]: With dead ends: 3030 [2020-01-16 18:03:55,710 INFO L226 Difference]: Without dead ends: 3010 [2020-01-16 18:03:55,710 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 18:03:55,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3010 states. [2020-01-16 18:03:55,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3010 to 1590. [2020-01-16 18:03:55,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1590 states. [2020-01-16 18:03:55,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 7101 transitions. [2020-01-16 18:03:55,778 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 7101 transitions. Word has length 28 [2020-01-16 18:03:55,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:55,778 INFO L478 AbstractCegarLoop]: Abstraction has 1590 states and 7101 transitions. [2020-01-16 18:03:55,778 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:55,779 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 7101 transitions. [2020-01-16 18:03:55,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:55,781 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:55,781 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 18:03:55,781 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 18:03:55,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:55,782 INFO L82 PathProgramCache]: Analyzing trace with hash 429080370, now seen corresponding path program 78 times [2020-01-16 18:03:55,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:55,782 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494504571] [2020-01-16 18:03:55,782 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:55,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:56,332 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 18:03:56,332 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494504571] [2020-01-16 18:03:56,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:56,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:56,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501058854] [2020-01-16 18:03:56,333 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:56,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:56,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:56,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:56,334 INFO L87 Difference]: Start difference. First operand 1590 states and 7101 transitions. Second operand 11 states. [2020-01-16 18:03:56,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:56,564 INFO L93 Difference]: Finished difference Result 3028 states and 11949 transitions. [2020-01-16 18:03:56,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:56,564 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:56,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:56,571 INFO L225 Difference]: With dead ends: 3028 [2020-01-16 18:03:56,572 INFO L226 Difference]: Without dead ends: 2993 [2020-01-16 18:03:56,572 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 18:03:56,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2993 states. [2020-01-16 18:03:56,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2993 to 1573. [2020-01-16 18:03:56,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:03:56,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7064 transitions. [2020-01-16 18:03:56,640 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7064 transitions. Word has length 28 [2020-01-16 18:03:56,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:56,641 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7064 transitions. [2020-01-16 18:03:56,641 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:56,641 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7064 transitions. [2020-01-16 18:03:56,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:56,643 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:56,643 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 18:03:56,644 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 18:03:56,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:56,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1755137380, now seen corresponding path program 79 times [2020-01-16 18:03:56,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:56,644 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420063223] [2020-01-16 18:03:56,644 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:56,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:57,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:03:57,179 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420063223] [2020-01-16 18:03:57,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:57,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:57,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120360034] [2020-01-16 18:03:57,180 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:57,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:57,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:57,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:57,180 INFO L87 Difference]: Start difference. First operand 1573 states and 7064 transitions. Second operand 11 states. [2020-01-16 18:03:57,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:57,377 INFO L93 Difference]: Finished difference Result 3014 states and 11932 transitions. [2020-01-16 18:03:57,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:57,377 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:57,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:57,384 INFO L225 Difference]: With dead ends: 3014 [2020-01-16 18:03:57,384 INFO L226 Difference]: Without dead ends: 2999 [2020-01-16 18:03:57,385 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 18:03:57,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2999 states. [2020-01-16 18:03:57,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2999 to 1585. [2020-01-16 18:03:57,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 18:03:57,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7097 transitions. [2020-01-16 18:03:57,452 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7097 transitions. Word has length 28 [2020-01-16 18:03:57,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:57,452 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7097 transitions. [2020-01-16 18:03:57,452 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:57,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7097 transitions. [2020-01-16 18:03:57,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:57,455 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:57,455 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:57,455 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 18:03:57,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:57,455 INFO L82 PathProgramCache]: Analyzing trace with hash -265732384, now seen corresponding path program 80 times [2020-01-16 18:03:57,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:57,455 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940686980] [2020-01-16 18:03:57,456 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:57,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:58,019 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 18:03:58,020 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940686980] [2020-01-16 18:03:58,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:58,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:58,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636530475] [2020-01-16 18:03:58,020 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:58,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:58,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:58,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:58,021 INFO L87 Difference]: Start difference. First operand 1585 states and 7097 transitions. Second operand 11 states. [2020-01-16 18:03:58,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:58,205 INFO L93 Difference]: Finished difference Result 3019 states and 11936 transitions. [2020-01-16 18:03:58,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:58,206 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:58,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:58,213 INFO L225 Difference]: With dead ends: 3019 [2020-01-16 18:03:58,214 INFO L226 Difference]: Without dead ends: 2993 [2020-01-16 18:03:58,214 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:03:58,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2993 states. [2020-01-16 18:03:58,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2993 to 1579. [2020-01-16 18:03:58,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:03:58,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7080 transitions. [2020-01-16 18:03:58,282 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7080 transitions. Word has length 28 [2020-01-16 18:03:58,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:58,282 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7080 transitions. [2020-01-16 18:03:58,282 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:58,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7080 transitions. [2020-01-16 18:03:58,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:58,284 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:58,284 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 18:03:58,284 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 18:03:58,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:58,285 INFO L82 PathProgramCache]: Analyzing trace with hash -679426224, now seen corresponding path program 81 times [2020-01-16 18:03:58,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:58,285 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510129160] [2020-01-16 18:03:58,285 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:58,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:58,822 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 18:03:58,822 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510129160] [2020-01-16 18:03:58,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:58,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:58,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588759796] [2020-01-16 18:03:58,822 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:58,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:58,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:58,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:58,823 INFO L87 Difference]: Start difference. First operand 1579 states and 7080 transitions. Second operand 11 states. [2020-01-16 18:03:59,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:59,016 INFO L93 Difference]: Finished difference Result 3010 states and 11919 transitions. [2020-01-16 18:03:59,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:59,017 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:59,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:59,024 INFO L225 Difference]: With dead ends: 3010 [2020-01-16 18:03:59,024 INFO L226 Difference]: Without dead ends: 2995 [2020-01-16 18:03:59,025 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 18:03:59,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2995 states. [2020-01-16 18:03:59,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2995 to 1584. [2020-01-16 18:03:59,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1584 states. [2020-01-16 18:03:59,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 7089 transitions. [2020-01-16 18:03:59,092 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 7089 transitions. Word has length 28 [2020-01-16 18:03:59,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:59,092 INFO L478 AbstractCegarLoop]: Abstraction has 1584 states and 7089 transitions. [2020-01-16 18:03:59,092 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:59,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 7089 transitions. [2020-01-16 18:03:59,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:59,095 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:59,095 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:59,095 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 18:03:59,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:59,095 INFO L82 PathProgramCache]: Analyzing trace with hash 983226464, now seen corresponding path program 82 times [2020-01-16 18:03:59,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:59,096 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504444431] [2020-01-16 18:03:59,096 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:59,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:03:59,628 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 18:03:59,628 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504444431] [2020-01-16 18:03:59,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:03:59,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:03:59,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976970710] [2020-01-16 18:03:59,629 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:03:59,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:03:59,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:03:59,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:03:59,629 INFO L87 Difference]: Start difference. First operand 1584 states and 7089 transitions. Second operand 11 states. [2020-01-16 18:03:59,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:03:59,815 INFO L93 Difference]: Finished difference Result 3012 states and 11918 transitions. [2020-01-16 18:03:59,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:03:59,816 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:03:59,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:03:59,824 INFO L225 Difference]: With dead ends: 3012 [2020-01-16 18:03:59,824 INFO L226 Difference]: Without dead ends: 2990 [2020-01-16 18:03:59,824 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:03:59,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2990 states. [2020-01-16 18:03:59,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2990 to 1579. [2020-01-16 18:03:59,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:03:59,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7075 transitions. [2020-01-16 18:03:59,891 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7075 transitions. Word has length 28 [2020-01-16 18:03:59,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:03:59,892 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7075 transitions. [2020-01-16 18:03:59,892 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:03:59,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7075 transitions. [2020-01-16 18:03:59,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:03:59,894 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:03:59,894 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:03:59,894 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 18:03:59,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:03:59,895 INFO L82 PathProgramCache]: Analyzing trace with hash -263106608, now seen corresponding path program 83 times [2020-01-16 18:03:59,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:03:59,896 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711899733] [2020-01-16 18:03:59,896 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:03:59,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:00,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:00,439 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711899733] [2020-01-16 18:04:00,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:00,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:00,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606952901] [2020-01-16 18:04:00,440 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:00,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:00,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:00,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:00,440 INFO L87 Difference]: Start difference. First operand 1579 states and 7075 transitions. Second operand 11 states. [2020-01-16 18:04:00,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:00,635 INFO L93 Difference]: Finished difference Result 3023 states and 11940 transitions. [2020-01-16 18:04:00,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:00,635 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:00,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:00,643 INFO L225 Difference]: With dead ends: 3023 [2020-01-16 18:04:00,643 INFO L226 Difference]: Without dead ends: 3003 [2020-01-16 18:04:00,643 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:04:00,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3003 states. [2020-01-16 18:04:00,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3003 to 1587. [2020-01-16 18:04:00,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1587 states. [2020-01-16 18:04:00,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 7089 transitions. [2020-01-16 18:04:00,710 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 7089 transitions. Word has length 28 [2020-01-16 18:04:00,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:00,711 INFO L478 AbstractCegarLoop]: Abstraction has 1587 states and 7089 transitions. [2020-01-16 18:04:00,711 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:00,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 7089 transitions. [2020-01-16 18:04:00,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:00,713 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:00,713 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 18:04:00,713 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 18:04:00,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:00,713 INFO L82 PathProgramCache]: Analyzing trace with hash -89858916, now seen corresponding path program 84 times [2020-01-16 18:04:00,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:00,714 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954638532] [2020-01-16 18:04:00,714 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:00,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:01,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:01,275 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954638532] [2020-01-16 18:04:01,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:01,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:01,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646151463] [2020-01-16 18:04:01,275 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:01,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:01,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:01,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:01,276 INFO L87 Difference]: Start difference. First operand 1587 states and 7089 transitions. Second operand 11 states. [2020-01-16 18:04:01,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:01,470 INFO L93 Difference]: Finished difference Result 3020 states and 11927 transitions. [2020-01-16 18:04:01,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:01,470 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:01,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:01,478 INFO L225 Difference]: With dead ends: 3020 [2020-01-16 18:04:01,478 INFO L226 Difference]: Without dead ends: 2989 [2020-01-16 18:04:01,478 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 18:04:01,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2020-01-16 18:04:01,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 1573. [2020-01-16 18:04:01,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:04:01,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7058 transitions. [2020-01-16 18:04:01,545 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7058 transitions. Word has length 28 [2020-01-16 18:04:01,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:01,546 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7058 transitions. [2020-01-16 18:04:01,546 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:01,546 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7058 transitions. [2020-01-16 18:04:01,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:01,548 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:01,548 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:01,548 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 18:04:01,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:01,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1744634276, now seen corresponding path program 85 times [2020-01-16 18:04:01,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:01,549 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393595687] [2020-01-16 18:04:01,549 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:01,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:02,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:02,090 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393595687] [2020-01-16 18:04:02,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:02,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:02,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962588100] [2020-01-16 18:04:02,090 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:02,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:02,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:02,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:02,091 INFO L87 Difference]: Start difference. First operand 1573 states and 7058 transitions. Second operand 11 states. [2020-01-16 18:04:02,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:02,286 INFO L93 Difference]: Finished difference Result 3006 states and 11911 transitions. [2020-01-16 18:04:02,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:02,287 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:02,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:02,294 INFO L225 Difference]: With dead ends: 3006 [2020-01-16 18:04:02,295 INFO L226 Difference]: Without dead ends: 2991 [2020-01-16 18:04:02,295 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:04:02,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2991 states. [2020-01-16 18:04:02,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2991 to 1583. [2020-01-16 18:04:02,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:04:02,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7086 transitions. [2020-01-16 18:04:02,384 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7086 transitions. Word has length 28 [2020-01-16 18:04:02,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:02,384 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7086 transitions. [2020-01-16 18:04:02,384 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:02,384 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7086 transitions. [2020-01-16 18:04:02,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:02,387 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:02,387 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 18:04:02,387 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 18:04:02,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:02,387 INFO L82 PathProgramCache]: Analyzing trace with hash 489473218, now seen corresponding path program 86 times [2020-01-16 18:04:02,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:02,387 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86513789] [2020-01-16 18:04:02,387 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:02,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:02,920 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 18:04:02,920 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86513789] [2020-01-16 18:04:02,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:02,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:02,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106425233] [2020-01-16 18:04:02,921 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:02,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:02,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:02,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:02,921 INFO L87 Difference]: Start difference. First operand 1583 states and 7086 transitions. Second operand 11 states. [2020-01-16 18:04:03,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:03,180 INFO L93 Difference]: Finished difference Result 3009 states and 11912 transitions. [2020-01-16 18:04:03,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:03,180 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:03,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:03,188 INFO L225 Difference]: With dead ends: 3009 [2020-01-16 18:04:03,188 INFO L226 Difference]: Without dead ends: 2986 [2020-01-16 18:04:03,188 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:04:03,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2986 states. [2020-01-16 18:04:03,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2986 to 1578. [2020-01-16 18:04:03,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:04:03,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7072 transitions. [2020-01-16 18:04:03,255 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7072 transitions. Word has length 28 [2020-01-16 18:04:03,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:03,256 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7072 transitions. [2020-01-16 18:04:03,256 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:03,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7072 transitions. [2020-01-16 18:04:03,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:03,258 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:03,258 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 18:04:03,258 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 18:04:03,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:03,259 INFO L82 PathProgramCache]: Analyzing trace with hash 2015103218, now seen corresponding path program 87 times [2020-01-16 18:04:03,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:03,259 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479275958] [2020-01-16 18:04:03,259 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:03,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:03,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:03,788 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479275958] [2020-01-16 18:04:03,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:03,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:03,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520645422] [2020-01-16 18:04:03,789 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:03,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:03,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:03,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:03,789 INFO L87 Difference]: Start difference. First operand 1578 states and 7072 transitions. Second operand 11 states. [2020-01-16 18:04:04,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:04,018 INFO L93 Difference]: Finished difference Result 3005 states and 11904 transitions. [2020-01-16 18:04:04,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:04,019 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:04,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:04,026 INFO L225 Difference]: With dead ends: 3005 [2020-01-16 18:04:04,026 INFO L226 Difference]: Without dead ends: 2990 [2020-01-16 18:04:04,026 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:04:04,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2990 states. [2020-01-16 18:04:04,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2990 to 1583. [2020-01-16 18:04:04,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:04:04,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7081 transitions. [2020-01-16 18:04:04,094 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7081 transitions. Word has length 28 [2020-01-16 18:04:04,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:04,094 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7081 transitions. [2020-01-16 18:04:04,094 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:04,094 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7081 transitions. [2020-01-16 18:04:04,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:04,097 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:04,097 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 18:04:04,097 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 18:04:04,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:04,097 INFO L82 PathProgramCache]: Analyzing trace with hash -617211390, now seen corresponding path program 88 times [2020-01-16 18:04:04,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:04,098 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966780741] [2020-01-16 18:04:04,098 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:04,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:04,639 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 18:04:04,639 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966780741] [2020-01-16 18:04:04,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:04,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:04,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877748530] [2020-01-16 18:04:04,640 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:04,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:04,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:04,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:04,640 INFO L87 Difference]: Start difference. First operand 1583 states and 7081 transitions. Second operand 11 states. [2020-01-16 18:04:04,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:04,835 INFO L93 Difference]: Finished difference Result 3007 states and 11903 transitions. [2020-01-16 18:04:04,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:04,835 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:04,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:04,843 INFO L225 Difference]: With dead ends: 3007 [2020-01-16 18:04:04,843 INFO L226 Difference]: Without dead ends: 2985 [2020-01-16 18:04:04,843 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 18:04:04,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2985 states. [2020-01-16 18:04:04,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2985 to 1578. [2020-01-16 18:04:04,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:04:04,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7067 transitions. [2020-01-16 18:04:04,911 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7067 transitions. Word has length 28 [2020-01-16 18:04:04,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:04,911 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7067 transitions. [2020-01-16 18:04:04,911 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:04,911 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7067 transitions. [2020-01-16 18:04:04,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:04,913 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:04,913 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:04,914 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 18:04:04,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:04,914 INFO L82 PathProgramCache]: Analyzing trace with hash 492098994, now seen corresponding path program 89 times [2020-01-16 18:04:04,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:04,914 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867636517] [2020-01-16 18:04:04,914 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:04,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:05,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:05,467 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867636517] [2020-01-16 18:04:05,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:05,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:05,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521128816] [2020-01-16 18:04:05,468 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:05,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:05,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:05,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:05,468 INFO L87 Difference]: Start difference. First operand 1578 states and 7067 transitions. Second operand 11 states. [2020-01-16 18:04:05,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:05,655 INFO L93 Difference]: Finished difference Result 3013 states and 11917 transitions. [2020-01-16 18:04:05,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:05,656 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:05,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:05,663 INFO L225 Difference]: With dead ends: 3013 [2020-01-16 18:04:05,663 INFO L226 Difference]: Without dead ends: 2995 [2020-01-16 18:04:05,663 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 18:04:05,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2995 states. [2020-01-16 18:04:05,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2995 to 1585. [2020-01-16 18:04:05,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 18:04:05,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7080 transitions. [2020-01-16 18:04:05,731 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7080 transitions. Word has length 28 [2020-01-16 18:04:05,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:05,731 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7080 transitions. [2020-01-16 18:04:05,731 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:05,731 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7080 transitions. [2020-01-16 18:04:05,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:05,733 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:05,734 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 18:04:05,734 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 18:04:05,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:05,734 INFO L82 PathProgramCache]: Analyzing trace with hash -79355812, now seen corresponding path program 90 times [2020-01-16 18:04:05,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:05,734 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618854925] [2020-01-16 18:04:05,734 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:05,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:06,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:06,278 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618854925] [2020-01-16 18:04:06,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:06,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:06,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250533442] [2020-01-16 18:04:06,279 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:06,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:06,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:06,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:06,279 INFO L87 Difference]: Start difference. First operand 1585 states and 7080 transitions. Second operand 11 states. [2020-01-16 18:04:06,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:06,490 INFO L93 Difference]: Finished difference Result 3012 states and 11908 transitions. [2020-01-16 18:04:06,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:06,491 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:06,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:06,500 INFO L225 Difference]: With dead ends: 3012 [2020-01-16 18:04:06,500 INFO L226 Difference]: Without dead ends: 2983 [2020-01-16 18:04:06,500 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:04:06,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2983 states. [2020-01-16 18:04:06,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2983 to 1573. [2020-01-16 18:04:06,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:04:06,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7053 transitions. [2020-01-16 18:04:06,587 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7053 transitions. Word has length 28 [2020-01-16 18:04:06,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:06,587 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7053 transitions. [2020-01-16 18:04:06,587 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:06,588 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7053 transitions. [2020-01-16 18:04:06,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:06,590 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:06,590 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:06,590 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 18:04:06,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:06,591 INFO L82 PathProgramCache]: Analyzing trace with hash -234223072, now seen corresponding path program 91 times [2020-01-16 18:04:06,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:06,591 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289935110] [2020-01-16 18:04:06,591 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:06,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:07,172 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 18:04:07,172 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289935110] [2020-01-16 18:04:07,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:07,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:07,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085788616] [2020-01-16 18:04:07,173 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:07,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:07,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:07,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:07,173 INFO L87 Difference]: Start difference. First operand 1573 states and 7053 transitions. Second operand 11 states. [2020-01-16 18:04:07,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:07,330 INFO L93 Difference]: Finished difference Result 3039 states and 11979 transitions. [2020-01-16 18:04:07,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:07,331 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:07,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:07,339 INFO L225 Difference]: With dead ends: 3039 [2020-01-16 18:04:07,339 INFO L226 Difference]: Without dead ends: 3019 [2020-01-16 18:04:07,339 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:04:07,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3019 states. [2020-01-16 18:04:07,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3019 to 1593. [2020-01-16 18:04:07,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1593 states. [2020-01-16 18:04:07,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1593 states to 1593 states and 7103 transitions. [2020-01-16 18:04:07,408 INFO L78 Accepts]: Start accepts. Automaton has 1593 states and 7103 transitions. Word has length 28 [2020-01-16 18:04:07,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:07,409 INFO L478 AbstractCegarLoop]: Abstraction has 1593 states and 7103 transitions. [2020-01-16 18:04:07,409 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:07,409 INFO L276 IsEmpty]: Start isEmpty. Operand 1593 states and 7103 transitions. [2020-01-16 18:04:07,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:07,411 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:07,411 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 18:04:07,411 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 18:04:07,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:07,412 INFO L82 PathProgramCache]: Analyzing trace with hash 510479426, now seen corresponding path program 92 times [2020-01-16 18:04:07,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:07,412 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798662281] [2020-01-16 18:04:07,412 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:07,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:07,974 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 18:04:07,974 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798662281] [2020-01-16 18:04:07,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:07,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:07,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245319172] [2020-01-16 18:04:07,974 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:07,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:07,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:07,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:07,975 INFO L87 Difference]: Start difference. First operand 1593 states and 7103 transitions. Second operand 11 states. [2020-01-16 18:04:08,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:08,144 INFO L93 Difference]: Finished difference Result 3037 states and 11967 transitions. [2020-01-16 18:04:08,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:08,145 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:08,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:08,152 INFO L225 Difference]: With dead ends: 3037 [2020-01-16 18:04:08,152 INFO L226 Difference]: Without dead ends: 3009 [2020-01-16 18:04:08,153 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 18:04:08,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3009 states. [2020-01-16 18:04:08,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3009 to 1583. [2020-01-16 18:04:08,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:04:08,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7077 transitions. [2020-01-16 18:04:08,222 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7077 transitions. Word has length 28 [2020-01-16 18:04:08,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:08,223 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7077 transitions. [2020-01-16 18:04:08,223 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:08,223 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7077 transitions. [2020-01-16 18:04:08,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:08,225 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:08,225 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 18:04:08,225 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 18:04:08,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:08,226 INFO L82 PathProgramCache]: Analyzing trace with hash -769452874, now seen corresponding path program 93 times [2020-01-16 18:04:08,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:08,226 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629939958] [2020-01-16 18:04:08,226 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:08,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:08,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:08,778 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629939958] [2020-01-16 18:04:08,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:08,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:08,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866212998] [2020-01-16 18:04:08,778 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:08,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:08,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:08,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:08,779 INFO L87 Difference]: Start difference. First operand 1583 states and 7077 transitions. Second operand 11 states. [2020-01-16 18:04:08,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:08,941 INFO L93 Difference]: Finished difference Result 3036 states and 11964 transitions. [2020-01-16 18:04:08,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:08,942 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:08,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:08,950 INFO L225 Difference]: With dead ends: 3036 [2020-01-16 18:04:08,950 INFO L226 Difference]: Without dead ends: 3016 [2020-01-16 18:04:08,950 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 18:04:08,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3016 states. [2020-01-16 18:04:09,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3016 to 1591. [2020-01-16 18:04:09,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1591 states. [2020-01-16 18:04:09,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1591 states to 1591 states and 7091 transitions. [2020-01-16 18:04:09,026 INFO L78 Accepts]: Start accepts. Automaton has 1591 states and 7091 transitions. Word has length 28 [2020-01-16 18:04:09,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:09,026 INFO L478 AbstractCegarLoop]: Abstraction has 1591 states and 7091 transitions. [2020-01-16 18:04:09,026 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:09,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1591 states and 7091 transitions. [2020-01-16 18:04:09,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:09,028 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:09,028 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:09,029 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 18:04:09,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:09,029 INFO L82 PathProgramCache]: Analyzing trace with hash -596205182, now seen corresponding path program 94 times [2020-01-16 18:04:09,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:09,029 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736758590] [2020-01-16 18:04:09,029 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:09,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:09,622 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 29 [2020-01-16 18:04:09,742 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 18:04:09,743 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736758590] [2020-01-16 18:04:09,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:09,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:09,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202794053] [2020-01-16 18:04:09,743 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:09,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:09,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:09,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:09,744 INFO L87 Difference]: Start difference. First operand 1591 states and 7091 transitions. Second operand 11 states. [2020-01-16 18:04:09,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:09,918 INFO L93 Difference]: Finished difference Result 3033 states and 11951 transitions. [2020-01-16 18:04:09,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:09,918 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:09,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:09,926 INFO L225 Difference]: With dead ends: 3033 [2020-01-16 18:04:09,926 INFO L226 Difference]: Without dead ends: 3008 [2020-01-16 18:04:09,926 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 18:04:09,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2020-01-16 18:04:09,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 1583. [2020-01-16 18:04:09,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:04:09,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7069 transitions. [2020-01-16 18:04:09,996 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7069 transitions. Word has length 28 [2020-01-16 18:04:09,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:09,996 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7069 transitions. [2020-01-16 18:04:09,996 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:09,996 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7069 transitions. [2020-01-16 18:04:09,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:09,999 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:09,999 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 18:04:09,999 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 18:04:09,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:09,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1586190582, now seen corresponding path program 95 times [2020-01-16 18:04:09,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:09,999 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225266647] [2020-01-16 18:04:09,999 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:10,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:10,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:10,560 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225266647] [2020-01-16 18:04:10,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:10,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:10,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405489748] [2020-01-16 18:04:10,560 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:10,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:10,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:10,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:10,561 INFO L87 Difference]: Start difference. First operand 1583 states and 7069 transitions. Second operand 11 states. [2020-01-16 18:04:10,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:10,751 INFO L93 Difference]: Finished difference Result 3031 states and 11948 transitions. [2020-01-16 18:04:10,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:10,752 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:10,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:10,759 INFO L225 Difference]: With dead ends: 3031 [2020-01-16 18:04:10,759 INFO L226 Difference]: Without dead ends: 3013 [2020-01-16 18:04:10,759 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 18:04:10,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3013 states. [2020-01-16 18:04:10,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3013 to 1590. [2020-01-16 18:04:10,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1590 states. [2020-01-16 18:04:10,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 7082 transitions. [2020-01-16 18:04:10,828 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 7082 transitions. Word has length 28 [2020-01-16 18:04:10,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:10,828 INFO L478 AbstractCegarLoop]: Abstraction has 1590 states and 7082 transitions. [2020-01-16 18:04:10,828 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:10,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 7082 transitions. [2020-01-16 18:04:10,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:10,831 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:10,831 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:10,831 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 18:04:10,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:10,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1014735776, now seen corresponding path program 96 times [2020-01-16 18:04:10,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:10,831 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940644904] [2020-01-16 18:04:10,832 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:10,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:11,375 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:04:11,381 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 18:04:11,382 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940644904] [2020-01-16 18:04:11,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:11,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:11,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916653398] [2020-01-16 18:04:11,382 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:11,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:11,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:11,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:11,383 INFO L87 Difference]: Start difference. First operand 1590 states and 7082 transitions. Second operand 11 states. [2020-01-16 18:04:11,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:11,573 INFO L93 Difference]: Finished difference Result 3030 states and 11939 transitions. [2020-01-16 18:04:11,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:11,573 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:11,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:11,581 INFO L225 Difference]: With dead ends: 3030 [2020-01-16 18:04:11,581 INFO L226 Difference]: Without dead ends: 2988 [2020-01-16 18:04:11,582 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 18:04:11,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2988 states. [2020-01-16 18:04:11,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2988 to 1565. [2020-01-16 18:04:11,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 18:04:11,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7030 transitions. [2020-01-16 18:04:11,649 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7030 transitions. Word has length 28 [2020-01-16 18:04:11,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:11,649 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7030 transitions. [2020-01-16 18:04:11,649 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:11,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7030 transitions. [2020-01-16 18:04:11,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:11,652 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:11,652 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 18:04:11,652 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 18:04:11,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:11,652 INFO L82 PathProgramCache]: Analyzing trace with hash 338356978, now seen corresponding path program 97 times [2020-01-16 18:04:11,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:11,652 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949893216] [2020-01-16 18:04:11,652 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:11,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:12,227 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:04:12,234 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 18:04:12,234 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949893216] [2020-01-16 18:04:12,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:12,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:12,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407586586] [2020-01-16 18:04:12,234 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:12,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:12,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:12,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:12,235 INFO L87 Difference]: Start difference. First operand 1565 states and 7030 transitions. Second operand 11 states. [2020-01-16 18:04:12,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:12,422 INFO L93 Difference]: Finished difference Result 3034 states and 11987 transitions. [2020-01-16 18:04:12,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:12,423 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:12,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:12,430 INFO L225 Difference]: With dead ends: 3034 [2020-01-16 18:04:12,430 INFO L226 Difference]: Without dead ends: 3018 [2020-01-16 18:04:12,430 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 18:04:12,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3018 states. [2020-01-16 18:04:12,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3018 to 1590. [2020-01-16 18:04:12,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1590 states. [2020-01-16 18:04:12,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 7110 transitions. [2020-01-16 18:04:12,497 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 7110 transitions. Word has length 28 [2020-01-16 18:04:12,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:12,498 INFO L478 AbstractCegarLoop]: Abstraction has 1590 states and 7110 transitions. [2020-01-16 18:04:12,498 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:12,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 7110 transitions. [2020-01-16 18:04:12,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:12,500 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:12,500 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:12,500 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 18:04:12,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:12,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1083059476, now seen corresponding path program 98 times [2020-01-16 18:04:12,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:12,501 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733758681] [2020-01-16 18:04:12,501 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:12,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:13,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:13,031 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733758681] [2020-01-16 18:04:13,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:13,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:13,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549437134] [2020-01-16 18:04:13,032 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:13,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:13,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:13,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:13,032 INFO L87 Difference]: Start difference. First operand 1590 states and 7110 transitions. Second operand 11 states. [2020-01-16 18:04:13,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:13,187 INFO L93 Difference]: Finished difference Result 3038 states and 11988 transitions. [2020-01-16 18:04:13,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:13,187 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:13,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:13,195 INFO L225 Difference]: With dead ends: 3038 [2020-01-16 18:04:13,195 INFO L226 Difference]: Without dead ends: 3011 [2020-01-16 18:04:13,195 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:04:13,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3011 states. [2020-01-16 18:04:13,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3011 to 1583. [2020-01-16 18:04:13,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:04:13,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7090 transitions. [2020-01-16 18:04:13,265 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7090 transitions. Word has length 28 [2020-01-16 18:04:13,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:13,265 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7090 transitions. [2020-01-16 18:04:13,265 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:13,265 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7090 transitions. [2020-01-16 18:04:13,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:13,267 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:13,267 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:13,268 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 18:04:13,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:13,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1949297936, now seen corresponding path program 99 times [2020-01-16 18:04:13,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:13,268 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795093810] [2020-01-16 18:04:13,268 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:13,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:13,819 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:04:13,826 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 18:04:13,826 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795093810] [2020-01-16 18:04:13,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:13,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:13,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944303141] [2020-01-16 18:04:13,827 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:13,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:13,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:13,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:13,827 INFO L87 Difference]: Start difference. First operand 1583 states and 7090 transitions. Second operand 11 states. [2020-01-16 18:04:14,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:14,066 INFO L93 Difference]: Finished difference Result 3031 states and 11975 transitions. [2020-01-16 18:04:14,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:14,067 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:14,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:14,075 INFO L225 Difference]: With dead ends: 3031 [2020-01-16 18:04:14,075 INFO L226 Difference]: Without dead ends: 3015 [2020-01-16 18:04:14,075 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 18:04:14,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3015 states. [2020-01-16 18:04:14,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3015 to 1589. [2020-01-16 18:04:14,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1589 states. [2020-01-16 18:04:14,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 7101 transitions. [2020-01-16 18:04:14,142 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 7101 transitions. Word has length 28 [2020-01-16 18:04:14,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:14,143 INFO L478 AbstractCegarLoop]: Abstraction has 1589 states and 7101 transitions. [2020-01-16 18:04:14,143 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:14,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 7101 transitions. [2020-01-16 18:04:14,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:14,145 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:14,145 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:14,146 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 18:04:14,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:14,146 INFO L82 PathProgramCache]: Analyzing trace with hash -856264364, now seen corresponding path program 100 times [2020-01-16 18:04:14,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:14,146 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335845518] [2020-01-16 18:04:14,146 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:14,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:14,689 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 18:04:14,689 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335845518] [2020-01-16 18:04:14,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:14,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:14,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754346834] [2020-01-16 18:04:14,690 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:14,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:14,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:14,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:14,690 INFO L87 Difference]: Start difference. First operand 1589 states and 7101 transitions. Second operand 11 states. [2020-01-16 18:04:14,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:14,897 INFO L93 Difference]: Finished difference Result 3033 states and 11973 transitions. [2020-01-16 18:04:14,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:14,898 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:14,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:14,905 INFO L225 Difference]: With dead ends: 3033 [2020-01-16 18:04:14,905 INFO L226 Difference]: Without dead ends: 3009 [2020-01-16 18:04:14,905 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:04:14,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3009 states. [2020-01-16 18:04:14,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3009 to 1583. [2020-01-16 18:04:14,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:04:14,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7084 transitions. [2020-01-16 18:04:14,972 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7084 transitions. Word has length 28 [2020-01-16 18:04:14,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:14,972 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7084 transitions. [2020-01-16 18:04:14,972 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:14,972 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7084 transitions. [2020-01-16 18:04:14,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:14,975 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:14,975 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 18:04:14,975 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 18:04:14,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:14,975 INFO L82 PathProgramCache]: Analyzing trace with hash 9974096, now seen corresponding path program 101 times [2020-01-16 18:04:14,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:14,975 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858397548] [2020-01-16 18:04:14,975 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:14,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:15,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:15,559 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858397548] [2020-01-16 18:04:15,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:15,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:15,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567255135] [2020-01-16 18:04:15,559 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:15,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:15,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:15,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:15,560 INFO L87 Difference]: Start difference. First operand 1583 states and 7084 transitions. Second operand 11 states. [2020-01-16 18:04:15,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:15,723 INFO L93 Difference]: Finished difference Result 3043 states and 11992 transitions. [2020-01-16 18:04:15,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:15,724 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:15,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:15,731 INFO L225 Difference]: With dead ends: 3043 [2020-01-16 18:04:15,732 INFO L226 Difference]: Without dead ends: 3023 [2020-01-16 18:04:15,732 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:04:15,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3023 states. [2020-01-16 18:04:15,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3023 to 1593. [2020-01-16 18:04:15,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1593 states. [2020-01-16 18:04:15,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1593 states to 1593 states and 7101 transitions. [2020-01-16 18:04:15,799 INFO L78 Accepts]: Start accepts. Automaton has 1593 states and 7101 transitions. Word has length 28 [2020-01-16 18:04:15,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:15,799 INFO L478 AbstractCegarLoop]: Abstraction has 1593 states and 7101 transitions. [2020-01-16 18:04:15,800 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:15,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1593 states and 7101 transitions. [2020-01-16 18:04:15,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:15,802 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:15,802 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 18:04:15,802 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 18:04:15,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:15,802 INFO L82 PathProgramCache]: Analyzing trace with hash 754676594, now seen corresponding path program 102 times [2020-01-16 18:04:15,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:15,803 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078477058] [2020-01-16 18:04:15,803 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:15,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:16,471 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 18:04:16,472 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078477058] [2020-01-16 18:04:16,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:16,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:16,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017834705] [2020-01-16 18:04:16,473 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:16,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:16,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:16,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:16,473 INFO L87 Difference]: Start difference. First operand 1593 states and 7101 transitions. Second operand 11 states. [2020-01-16 18:04:16,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:16,658 INFO L93 Difference]: Finished difference Result 3041 states and 11980 transitions. [2020-01-16 18:04:16,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:16,658 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:16,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:16,665 INFO L225 Difference]: With dead ends: 3041 [2020-01-16 18:04:16,666 INFO L226 Difference]: Without dead ends: 3005 [2020-01-16 18:04:16,666 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 18:04:16,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3005 states. [2020-01-16 18:04:16,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3005 to 1575. [2020-01-16 18:04:16,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:04:16,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7061 transitions. [2020-01-16 18:04:16,735 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7061 transitions. Word has length 28 [2020-01-16 18:04:16,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:16,736 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7061 transitions. [2020-01-16 18:04:16,736 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:16,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7061 transitions. [2020-01-16 18:04:16,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:16,739 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:16,739 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 18:04:16,739 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 18:04:16,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:16,740 INFO L82 PathProgramCache]: Analyzing trace with hash 926102300, now seen corresponding path program 103 times [2020-01-16 18:04:16,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:16,740 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262024696] [2020-01-16 18:04:16,740 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:16,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:17,205 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 29 [2020-01-16 18:04:17,320 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 18:04:17,320 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262024696] [2020-01-16 18:04:17,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:17,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:17,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038603422] [2020-01-16 18:04:17,321 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:17,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:17,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:17,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:17,321 INFO L87 Difference]: Start difference. First operand 1575 states and 7061 transitions. Second operand 11 states. [2020-01-16 18:04:17,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:17,551 INFO L93 Difference]: Finished difference Result 3030 states and 11971 transitions. [2020-01-16 18:04:17,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:17,552 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:17,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:17,559 INFO L225 Difference]: With dead ends: 3030 [2020-01-16 18:04:17,559 INFO L226 Difference]: Without dead ends: 3014 [2020-01-16 18:04:17,559 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 18:04:17,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3014 states. [2020-01-16 18:04:17,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3014 to 1589. [2020-01-16 18:04:17,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1589 states. [2020-01-16 18:04:17,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 7100 transitions. [2020-01-16 18:04:17,626 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 7100 transitions. Word has length 28 [2020-01-16 18:04:17,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:17,627 INFO L478 AbstractCegarLoop]: Abstraction has 1589 states and 7100 transitions. [2020-01-16 18:04:17,627 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:17,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 7100 transitions. [2020-01-16 18:04:17,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:17,629 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:17,629 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 18:04:17,629 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 18:04:17,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:17,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1670804798, now seen corresponding path program 104 times [2020-01-16 18:04:17,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:17,630 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155395013] [2020-01-16 18:04:17,630 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:17,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:18,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:18,176 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155395013] [2020-01-16 18:04:18,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:18,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:18,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488085041] [2020-01-16 18:04:18,177 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:18,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:18,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:18,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:18,177 INFO L87 Difference]: Start difference. First operand 1589 states and 7100 transitions. Second operand 11 states. [2020-01-16 18:04:18,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:18,357 INFO L93 Difference]: Finished difference Result 3034 states and 11972 transitions. [2020-01-16 18:04:18,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:18,357 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:18,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:18,364 INFO L225 Difference]: With dead ends: 3034 [2020-01-16 18:04:18,364 INFO L226 Difference]: Without dead ends: 3007 [2020-01-16 18:04:18,364 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:04:18,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3007 states. [2020-01-16 18:04:18,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3007 to 1582. [2020-01-16 18:04:18,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 18:04:18,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7080 transitions. [2020-01-16 18:04:18,433 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7080 transitions. Word has length 28 [2020-01-16 18:04:18,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:18,433 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7080 transitions. [2020-01-16 18:04:18,433 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:18,433 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7080 transitions. [2020-01-16 18:04:18,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:18,436 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:18,436 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 18:04:18,436 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 18:04:18,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:18,437 INFO L82 PathProgramCache]: Analyzing trace with hash 2001813456, now seen corresponding path program 105 times [2020-01-16 18:04:18,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:18,437 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353037812] [2020-01-16 18:04:18,437 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:18,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:18,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:18,981 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353037812] [2020-01-16 18:04:18,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:18,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:18,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98360540] [2020-01-16 18:04:18,982 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:18,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:18,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:18,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:18,982 INFO L87 Difference]: Start difference. First operand 1582 states and 7080 transitions. Second operand 11 states. [2020-01-16 18:04:19,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:19,220 INFO L93 Difference]: Finished difference Result 3026 states and 11957 transitions. [2020-01-16 18:04:19,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:19,220 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:19,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:19,228 INFO L225 Difference]: With dead ends: 3026 [2020-01-16 18:04:19,228 INFO L226 Difference]: Without dead ends: 3010 [2020-01-16 18:04:19,228 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 18:04:19,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3010 states. [2020-01-16 18:04:19,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3010 to 1588. [2020-01-16 18:04:19,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1588 states. [2020-01-16 18:04:19,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 7091 transitions. [2020-01-16 18:04:19,298 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 7091 transitions. Word has length 28 [2020-01-16 18:04:19,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:19,299 INFO L478 AbstractCegarLoop]: Abstraction has 1588 states and 7091 transitions. [2020-01-16 18:04:19,299 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:19,299 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 7091 transitions. [2020-01-16 18:04:19,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:19,301 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:19,301 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 18:04:19,301 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 18:04:19,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:19,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1375203650, now seen corresponding path program 106 times [2020-01-16 18:04:19,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:19,302 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885148936] [2020-01-16 18:04:19,302 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:19,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:19,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:19,859 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885148936] [2020-01-16 18:04:19,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:19,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:19,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256166950] [2020-01-16 18:04:19,860 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:19,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:19,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:19,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:19,860 INFO L87 Difference]: Start difference. First operand 1588 states and 7091 transitions. Second operand 11 states. [2020-01-16 18:04:20,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:20,045 INFO L93 Difference]: Finished difference Result 3027 states and 11953 transitions. [2020-01-16 18:04:20,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:20,046 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:20,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:20,054 INFO L225 Difference]: With dead ends: 3027 [2020-01-16 18:04:20,054 INFO L226 Difference]: Without dead ends: 3004 [2020-01-16 18:04:20,054 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 18:04:20,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3004 states. [2020-01-16 18:04:20,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3004 to 1582. [2020-01-16 18:04:20,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 18:04:20,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7074 transitions. [2020-01-16 18:04:20,126 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7074 transitions. Word has length 28 [2020-01-16 18:04:20,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:20,126 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7074 transitions. [2020-01-16 18:04:20,126 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:20,126 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7074 transitions. [2020-01-16 18:04:20,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:20,129 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:20,129 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 18:04:20,129 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 18:04:20,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:20,129 INFO L82 PathProgramCache]: Analyzing trace with hash 62489616, now seen corresponding path program 107 times [2020-01-16 18:04:20,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:20,130 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134978476] [2020-01-16 18:04:20,130 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:20,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:20,699 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 18:04:20,699 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134978476] [2020-01-16 18:04:20,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:20,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:20,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562085302] [2020-01-16 18:04:20,700 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:20,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:20,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:20,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:20,700 INFO L87 Difference]: Start difference. First operand 1582 states and 7074 transitions. Second operand 11 states. [2020-01-16 18:04:20,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:20,853 INFO L93 Difference]: Finished difference Result 3036 states and 11970 transitions. [2020-01-16 18:04:20,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:20,854 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:20,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:20,860 INFO L225 Difference]: With dead ends: 3036 [2020-01-16 18:04:20,860 INFO L226 Difference]: Without dead ends: 3016 [2020-01-16 18:04:20,861 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 18:04:20,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3016 states. [2020-01-16 18:04:20,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3016 to 1590. [2020-01-16 18:04:20,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1590 states. [2020-01-16 18:04:20,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 7088 transitions. [2020-01-16 18:04:20,928 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 7088 transitions. Word has length 28 [2020-01-16 18:04:20,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:20,928 INFO L478 AbstractCegarLoop]: Abstraction has 1590 states and 7088 transitions. [2020-01-16 18:04:20,928 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:20,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 7088 transitions. [2020-01-16 18:04:20,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:20,931 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:20,931 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 18:04:20,931 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 18:04:20,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:20,931 INFO L82 PathProgramCache]: Analyzing trace with hash 235737308, now seen corresponding path program 108 times [2020-01-16 18:04:20,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:20,931 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307238227] [2020-01-16 18:04:20,931 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:20,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:21,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:21,543 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307238227] [2020-01-16 18:04:21,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:21,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:21,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140329741] [2020-01-16 18:04:21,543 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:21,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:21,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:21,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:21,544 INFO L87 Difference]: Start difference. First operand 1590 states and 7088 transitions. Second operand 11 states. [2020-01-16 18:04:21,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:21,751 INFO L93 Difference]: Finished difference Result 3033 states and 11957 transitions. [2020-01-16 18:04:21,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:21,752 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:21,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:21,759 INFO L225 Difference]: With dead ends: 3033 [2020-01-16 18:04:21,759 INFO L226 Difference]: Without dead ends: 3001 [2020-01-16 18:04:21,760 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 18:04:21,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3001 states. [2020-01-16 18:04:21,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3001 to 1575. [2020-01-16 18:04:21,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:04:21,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7054 transitions. [2020-01-16 18:04:21,827 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7054 transitions. Word has length 28 [2020-01-16 18:04:21,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:21,827 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7054 transitions. [2020-01-16 18:04:21,827 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:21,827 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7054 transitions. [2020-01-16 18:04:21,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:21,829 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:21,829 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:21,829 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 18:04:21,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:21,830 INFO L82 PathProgramCache]: Analyzing trace with hash 936605404, now seen corresponding path program 109 times [2020-01-16 18:04:21,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:21,830 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800194155] [2020-01-16 18:04:21,830 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:21,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:22,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:22,393 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800194155] [2020-01-16 18:04:22,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:22,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:22,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656656483] [2020-01-16 18:04:22,394 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:22,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:22,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:22,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:22,394 INFO L87 Difference]: Start difference. First operand 1575 states and 7054 transitions. Second operand 11 states. [2020-01-16 18:04:22,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:22,634 INFO L93 Difference]: Finished difference Result 3022 states and 11949 transitions. [2020-01-16 18:04:22,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:22,635 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:22,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:22,642 INFO L225 Difference]: With dead ends: 3022 [2020-01-16 18:04:22,643 INFO L226 Difference]: Without dead ends: 3006 [2020-01-16 18:04:22,643 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 18:04:22,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3006 states. [2020-01-16 18:04:22,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3006 to 1587. [2020-01-16 18:04:22,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1587 states. [2020-01-16 18:04:22,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 7088 transitions. [2020-01-16 18:04:22,711 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 7088 transitions. Word has length 28 [2020-01-16 18:04:22,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:22,711 INFO L478 AbstractCegarLoop]: Abstraction has 1587 states and 7088 transitions. [2020-01-16 18:04:22,711 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:22,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 7088 transitions. [2020-01-16 18:04:22,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:22,713 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:22,713 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 18:04:22,713 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 18:04:22,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:22,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1868956896, now seen corresponding path program 110 times [2020-01-16 18:04:22,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:22,714 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376923508] [2020-01-16 18:04:22,714 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:22,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:23,256 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:04:23,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:23,264 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376923508] [2020-01-16 18:04:23,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:23,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:23,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680516327] [2020-01-16 18:04:23,264 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:23,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:23,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:23,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:23,265 INFO L87 Difference]: Start difference. First operand 1587 states and 7088 transitions. Second operand 11 states. [2020-01-16 18:04:23,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:23,496 INFO L93 Difference]: Finished difference Result 3024 states and 11947 transitions. [2020-01-16 18:04:23,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:23,496 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:23,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:23,503 INFO L225 Difference]: With dead ends: 3024 [2020-01-16 18:04:23,503 INFO L226 Difference]: Without dead ends: 3000 [2020-01-16 18:04:23,504 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 18:04:23,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3000 states. [2020-01-16 18:04:23,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3000 to 1581. [2020-01-16 18:04:23,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:04:23,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7071 transitions. [2020-01-16 18:04:23,571 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7071 transitions. Word has length 28 [2020-01-16 18:04:23,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:23,571 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7071 transitions. [2020-01-16 18:04:23,571 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:23,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7071 transitions. [2020-01-16 18:04:23,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:23,573 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:23,573 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:23,573 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 18:04:23,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:23,574 INFO L82 PathProgramCache]: Analyzing trace with hash 401375602, now seen corresponding path program 111 times [2020-01-16 18:04:23,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:23,574 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000978054] [2020-01-16 18:04:23,574 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:23,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:24,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:24,122 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000978054] [2020-01-16 18:04:24,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:24,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:24,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452996282] [2020-01-16 18:04:24,122 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:24,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:24,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:24,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:24,123 INFO L87 Difference]: Start difference. First operand 1581 states and 7071 transitions. Second operand 11 states. [2020-01-16 18:04:24,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:24,302 INFO L93 Difference]: Finished difference Result 3021 states and 11941 transitions. [2020-01-16 18:04:24,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:24,303 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:24,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:24,310 INFO L225 Difference]: With dead ends: 3021 [2020-01-16 18:04:24,310 INFO L226 Difference]: Without dead ends: 3005 [2020-01-16 18:04:24,310 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 18:04:24,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3005 states. [2020-01-16 18:04:24,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3005 to 1587. [2020-01-16 18:04:24,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1587 states. [2020-01-16 18:04:24,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 7082 transitions. [2020-01-16 18:04:24,378 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 7082 transitions. Word has length 28 [2020-01-16 18:04:24,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:24,378 INFO L478 AbstractCegarLoop]: Abstraction has 1587 states and 7082 transitions. [2020-01-16 18:04:24,378 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:24,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 7082 transitions. [2020-01-16 18:04:24,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:24,380 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:24,380 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 18:04:24,380 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 18:04:24,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:24,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1319325792, now seen corresponding path program 112 times [2020-01-16 18:04:24,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:24,381 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402219598] [2020-01-16 18:04:24,381 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:24,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:24,938 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 18:04:24,938 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402219598] [2020-01-16 18:04:24,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:24,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:24,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016955939] [2020-01-16 18:04:24,939 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:24,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:24,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:24,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:24,939 INFO L87 Difference]: Start difference. First operand 1587 states and 7082 transitions. Second operand 11 states. [2020-01-16 18:04:25,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:25,128 INFO L93 Difference]: Finished difference Result 3022 states and 11937 transitions. [2020-01-16 18:04:25,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:25,128 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:25,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:25,135 INFO L225 Difference]: With dead ends: 3022 [2020-01-16 18:04:25,135 INFO L226 Difference]: Without dead ends: 2999 [2020-01-16 18:04:25,135 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 18:04:25,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2999 states. [2020-01-16 18:04:25,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2999 to 1581. [2020-01-16 18:04:25,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:04:25,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7065 transitions. [2020-01-16 18:04:25,203 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7065 transitions. Word has length 28 [2020-01-16 18:04:25,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:25,203 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7065 transitions. [2020-01-16 18:04:25,203 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:25,203 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7065 transitions. [2020-01-16 18:04:25,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:25,205 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:25,206 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:25,206 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 18:04:25,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:25,206 INFO L82 PathProgramCache]: Analyzing trace with hash 817695218, now seen corresponding path program 113 times [2020-01-16 18:04:25,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:25,206 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415619987] [2020-01-16 18:04:25,206 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:25,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:25,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:25,766 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415619987] [2020-01-16 18:04:25,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:25,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:25,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797484453] [2020-01-16 18:04:25,767 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:25,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:25,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:25,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:25,767 INFO L87 Difference]: Start difference. First operand 1581 states and 7065 transitions. Second operand 11 states. [2020-01-16 18:04:25,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:25,981 INFO L93 Difference]: Finished difference Result 3026 states and 11946 transitions. [2020-01-16 18:04:25,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:25,982 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:25,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:25,989 INFO L225 Difference]: With dead ends: 3026 [2020-01-16 18:04:25,990 INFO L226 Difference]: Without dead ends: 3008 [2020-01-16 18:04:25,990 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 18:04:26,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2020-01-16 18:04:26,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 1588. [2020-01-16 18:04:26,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1588 states. [2020-01-16 18:04:26,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 7078 transitions. [2020-01-16 18:04:26,057 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 7078 transitions. Word has length 28 [2020-01-16 18:04:26,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:26,058 INFO L478 AbstractCegarLoop]: Abstraction has 1588 states and 7078 transitions. [2020-01-16 18:04:26,058 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:26,058 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 7078 transitions. [2020-01-16 18:04:26,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:26,060 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:26,060 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:26,060 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 18:04:26,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:26,060 INFO L82 PathProgramCache]: Analyzing trace with hash 246240412, now seen corresponding path program 114 times [2020-01-16 18:04:26,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:26,061 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310148444] [2020-01-16 18:04:26,061 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:26,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:26,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:26,603 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310148444] [2020-01-16 18:04:26,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:26,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:26,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449204377] [2020-01-16 18:04:26,603 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:26,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:26,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:26,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:26,604 INFO L87 Difference]: Start difference. First operand 1588 states and 7078 transitions. Second operand 11 states. [2020-01-16 18:04:26,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:26,816 INFO L93 Difference]: Finished difference Result 3025 states and 11937 transitions. [2020-01-16 18:04:26,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:26,816 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:26,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:26,823 INFO L225 Difference]: With dead ends: 3025 [2020-01-16 18:04:26,823 INFO L226 Difference]: Without dead ends: 2995 [2020-01-16 18:04:26,824 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:04:26,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2995 states. [2020-01-16 18:04:26,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2995 to 1575. [2020-01-16 18:04:26,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:04:26,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7048 transitions. [2020-01-16 18:04:26,893 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7048 transitions. Word has length 28 [2020-01-16 18:04:26,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:26,893 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7048 transitions. [2020-01-16 18:04:26,893 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:26,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7048 transitions. [2020-01-16 18:04:26,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:26,895 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:26,895 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 18:04:26,896 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 18:04:26,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:26,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1691811006, now seen corresponding path program 115 times [2020-01-16 18:04:26,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:26,896 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311812305] [2020-01-16 18:04:26,896 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:26,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:27,499 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 18:04:27,500 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311812305] [2020-01-16 18:04:27,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:27,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:27,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920899986] [2020-01-16 18:04:27,500 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:27,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:27,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:27,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:27,501 INFO L87 Difference]: Start difference. First operand 1575 states and 7048 transitions. Second operand 11 states. [2020-01-16 18:04:27,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:27,677 INFO L93 Difference]: Finished difference Result 3048 states and 11997 transitions. [2020-01-16 18:04:27,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:27,678 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:27,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:27,685 INFO L225 Difference]: With dead ends: 3048 [2020-01-16 18:04:27,685 INFO L226 Difference]: Without dead ends: 3028 [2020-01-16 18:04:27,685 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 18:04:27,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3028 states. [2020-01-16 18:04:27,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3028 to 1595. [2020-01-16 18:04:27,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1595 states. [2020-01-16 18:04:27,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1595 states to 1595 states and 7098 transitions. [2020-01-16 18:04:27,756 INFO L78 Accepts]: Start accepts. Automaton has 1595 states and 7098 transitions. Word has length 28 [2020-01-16 18:04:27,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:27,756 INFO L478 AbstractCegarLoop]: Abstraction has 1595 states and 7098 transitions. [2020-01-16 18:04:27,756 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:27,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1595 states and 7098 transitions. [2020-01-16 18:04:27,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:27,759 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:27,759 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 18:04:27,759 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 18:04:27,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:27,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1858453792, now seen corresponding path program 116 times [2020-01-16 18:04:27,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:27,759 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988177160] [2020-01-16 18:04:27,760 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:27,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:28,344 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 18:04:28,344 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988177160] [2020-01-16 18:04:28,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:28,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:28,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145556538] [2020-01-16 18:04:28,345 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:28,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:28,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:28,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:28,345 INFO L87 Difference]: Start difference. First operand 1595 states and 7098 transitions. Second operand 11 states. [2020-01-16 18:04:28,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:28,538 INFO L93 Difference]: Finished difference Result 3046 states and 11985 transitions. [2020-01-16 18:04:28,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:28,539 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:28,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:28,546 INFO L225 Difference]: With dead ends: 3046 [2020-01-16 18:04:28,546 INFO L226 Difference]: Without dead ends: 3018 [2020-01-16 18:04:28,546 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 18:04:28,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3018 states. [2020-01-16 18:04:28,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3018 to 1585. [2020-01-16 18:04:28,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 18:04:28,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7072 transitions. [2020-01-16 18:04:28,614 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7072 transitions. Word has length 28 [2020-01-16 18:04:28,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:28,614 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7072 transitions. [2020-01-16 18:04:28,614 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:28,614 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7072 transitions. [2020-01-16 18:04:28,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:28,617 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:28,617 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:28,617 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 18:04:28,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:28,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1156581204, now seen corresponding path program 117 times [2020-01-16 18:04:28,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:28,617 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873526015] [2020-01-16 18:04:28,617 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:28,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:29,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:29,189 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873526015] [2020-01-16 18:04:29,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:29,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:29,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694465219] [2020-01-16 18:04:29,189 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:29,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:29,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:29,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:29,190 INFO L87 Difference]: Start difference. First operand 1585 states and 7072 transitions. Second operand 11 states. [2020-01-16 18:04:29,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:29,368 INFO L93 Difference]: Finished difference Result 3045 states and 11982 transitions. [2020-01-16 18:04:29,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:29,368 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:29,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:29,376 INFO L225 Difference]: With dead ends: 3045 [2020-01-16 18:04:29,376 INFO L226 Difference]: Without dead ends: 3025 [2020-01-16 18:04:29,377 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:04:29,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3025 states. [2020-01-16 18:04:29,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3025 to 1593. [2020-01-16 18:04:29,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1593 states. [2020-01-16 18:04:29,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1593 states to 1593 states and 7086 transitions. [2020-01-16 18:04:29,444 INFO L78 Accepts]: Start accepts. Automaton has 1593 states and 7086 transitions. Word has length 28 [2020-01-16 18:04:29,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:29,444 INFO L478 AbstractCegarLoop]: Abstraction has 1593 states and 7086 transitions. [2020-01-16 18:04:29,445 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:29,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1593 states and 7086 transitions. [2020-01-16 18:04:29,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:29,447 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:29,447 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:29,447 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 18:04:29,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:29,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1329828896, now seen corresponding path program 118 times [2020-01-16 18:04:29,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:29,448 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620946222] [2020-01-16 18:04:29,448 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:29,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:30,005 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 18:04:30,005 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620946222] [2020-01-16 18:04:30,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:30,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:30,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063595091] [2020-01-16 18:04:30,006 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:30,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:30,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:30,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:30,007 INFO L87 Difference]: Start difference. First operand 1593 states and 7086 transitions. Second operand 11 states. [2020-01-16 18:04:30,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:30,220 INFO L93 Difference]: Finished difference Result 3042 states and 11969 transitions. [2020-01-16 18:04:30,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:30,221 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:30,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:30,227 INFO L225 Difference]: With dead ends: 3042 [2020-01-16 18:04:30,227 INFO L226 Difference]: Without dead ends: 3017 [2020-01-16 18:04:30,228 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 18:04:30,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3017 states. [2020-01-16 18:04:30,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3017 to 1585. [2020-01-16 18:04:30,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 18:04:30,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7064 transitions. [2020-01-16 18:04:30,295 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7064 transitions. Word has length 28 [2020-01-16 18:04:30,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:30,295 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7064 transitions. [2020-01-16 18:04:30,295 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:30,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7064 transitions. [2020-01-16 18:04:30,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:30,297 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:30,298 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:30,298 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 18:04:30,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:30,298 INFO L82 PathProgramCache]: Analyzing trace with hash -782742636, now seen corresponding path program 119 times [2020-01-16 18:04:30,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:30,298 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111364445] [2020-01-16 18:04:30,298 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:30,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:30,844 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 18:04:30,845 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111364445] [2020-01-16 18:04:30,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:30,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:30,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343809222] [2020-01-16 18:04:30,845 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:30,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:30,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:30,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:30,846 INFO L87 Difference]: Start difference. First operand 1585 states and 7064 transitions. Second operand 11 states. [2020-01-16 18:04:31,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:31,080 INFO L93 Difference]: Finished difference Result 3040 states and 11966 transitions. [2020-01-16 18:04:31,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:31,081 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:31,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:31,089 INFO L225 Difference]: With dead ends: 3040 [2020-01-16 18:04:31,089 INFO L226 Difference]: Without dead ends: 3022 [2020-01-16 18:04:31,089 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:04:31,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3022 states. [2020-01-16 18:04:31,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3022 to 1592. [2020-01-16 18:04:31,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1592 states. [2020-01-16 18:04:31,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1592 states to 1592 states and 7077 transitions. [2020-01-16 18:04:31,156 INFO L78 Accepts]: Start accepts. Automaton has 1592 states and 7077 transitions. Word has length 28 [2020-01-16 18:04:31,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:31,156 INFO L478 AbstractCegarLoop]: Abstraction has 1592 states and 7077 transitions. [2020-01-16 18:04:31,156 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:31,156 INFO L276 IsEmpty]: Start isEmpty. Operand 1592 states and 7077 transitions. [2020-01-16 18:04:31,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:31,159 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:31,159 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:31,159 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 18:04:31,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:31,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1354197442, now seen corresponding path program 120 times [2020-01-16 18:04:31,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:31,160 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145730321] [2020-01-16 18:04:31,160 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:31,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:31,722 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 32 [2020-01-16 18:04:31,730 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 18:04:31,730 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145730321] [2020-01-16 18:04:31,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:31,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:31,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90348538] [2020-01-16 18:04:31,731 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:31,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:31,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:31,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:31,732 INFO L87 Difference]: Start difference. First operand 1592 states and 7077 transitions. Second operand 11 states. [2020-01-16 18:04:32,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:32,005 INFO L93 Difference]: Finished difference Result 3039 states and 11957 transitions. [2020-01-16 18:04:32,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:32,006 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:32,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:32,014 INFO L225 Difference]: With dead ends: 3039 [2020-01-16 18:04:32,014 INFO L226 Difference]: Without dead ends: 2985 [2020-01-16 18:04:32,014 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 18:04:32,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2985 states. [2020-01-16 18:04:32,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2985 to 1555. [2020-01-16 18:04:32,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1555 states. [2020-01-16 18:04:32,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 7003 transitions. [2020-01-16 18:04:32,082 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 7003 transitions. Word has length 28 [2020-01-16 18:04:32,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:32,082 INFO L478 AbstractCegarLoop]: Abstraction has 1555 states and 7003 transitions. [2020-01-16 18:04:32,082 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:32,082 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 7003 transitions. [2020-01-16 18:04:32,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:32,085 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:32,085 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 18:04:32,085 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 18:04:32,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:32,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1151658060, now seen corresponding path program 121 times [2020-01-16 18:04:32,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:32,086 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016726486] [2020-01-16 18:04:32,086 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:32,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:32,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:32,645 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016726486] [2020-01-16 18:04:32,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:32,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:32,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734181008] [2020-01-16 18:04:32,645 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:32,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:32,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:32,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:32,646 INFO L87 Difference]: Start difference. First operand 1555 states and 7003 transitions. Second operand 11 states. [2020-01-16 18:04:32,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:32,919 INFO L93 Difference]: Finished difference Result 2966 states and 11803 transitions. [2020-01-16 18:04:32,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:32,919 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:32,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:32,927 INFO L225 Difference]: With dead ends: 2966 [2020-01-16 18:04:32,927 INFO L226 Difference]: Without dead ends: 2951 [2020-01-16 18:04:32,927 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 18:04:32,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2020-01-16 18:04:32,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 1579. [2020-01-16 18:04:32,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:04:32,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7097 transitions. [2020-01-16 18:04:32,996 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7097 transitions. Word has length 28 [2020-01-16 18:04:32,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:32,996 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7097 transitions. [2020-01-16 18:04:32,996 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:32,996 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7097 transitions. [2020-01-16 18:04:32,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:32,998 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:32,998 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 18:04:32,999 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 18:04:32,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:32,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1896360558, now seen corresponding path program 122 times [2020-01-16 18:04:32,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:32,999 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555639305] [2020-01-16 18:04:32,999 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:33,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:33,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:33,560 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555639305] [2020-01-16 18:04:33,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:33,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:33,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282835284] [2020-01-16 18:04:33,561 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:33,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:33,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:33,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:33,561 INFO L87 Difference]: Start difference. First operand 1579 states and 7097 transitions. Second operand 11 states. [2020-01-16 18:04:33,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:33,812 INFO L93 Difference]: Finished difference Result 2967 states and 11800 transitions. [2020-01-16 18:04:33,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:33,813 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:33,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:33,821 INFO L225 Difference]: With dead ends: 2967 [2020-01-16 18:04:33,821 INFO L226 Difference]: Without dead ends: 2946 [2020-01-16 18:04:33,821 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 18:04:33,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2946 states. [2020-01-16 18:04:33,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2946 to 1574. [2020-01-16 18:04:33,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:04:33,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7083 transitions. [2020-01-16 18:04:33,889 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7083 transitions. Word has length 28 [2020-01-16 18:04:33,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:33,889 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7083 transitions. [2020-01-16 18:04:33,890 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:33,890 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7083 transitions. [2020-01-16 18:04:33,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:33,892 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:33,892 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 18:04:33,892 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 18:04:33,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:33,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1532368278, now seen corresponding path program 123 times [2020-01-16 18:04:33,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:33,893 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556151084] [2020-01-16 18:04:33,893 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:33,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:34,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:34,422 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556151084] [2020-01-16 18:04:34,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:34,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:34,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738548081] [2020-01-16 18:04:34,422 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:34,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:34,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:34,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:34,423 INFO L87 Difference]: Start difference. First operand 1574 states and 7083 transitions. Second operand 11 states. [2020-01-16 18:04:34,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:34,667 INFO L93 Difference]: Finished difference Result 2971 states and 11807 transitions. [2020-01-16 18:04:34,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:34,668 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:34,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:34,675 INFO L225 Difference]: With dead ends: 2971 [2020-01-16 18:04:34,675 INFO L226 Difference]: Without dead ends: 2956 [2020-01-16 18:04:34,675 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 18:04:34,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2020-01-16 18:04:34,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 1580. [2020-01-16 18:04:34,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:04:34,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7094 transitions. [2020-01-16 18:04:34,743 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7094 transitions. Word has length 28 [2020-01-16 18:04:34,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:34,743 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7094 transitions. [2020-01-16 18:04:34,743 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:34,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7094 transitions. [2020-01-16 18:04:34,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:34,746 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:34,746 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 18:04:34,746 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 18:04:34,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:34,746 INFO L82 PathProgramCache]: Analyzing trace with hash -42963282, now seen corresponding path program 124 times [2020-01-16 18:04:34,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:34,746 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435648420] [2020-01-16 18:04:34,746 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:34,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:35,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:35,287 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435648420] [2020-01-16 18:04:35,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:35,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:35,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783409598] [2020-01-16 18:04:35,287 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:35,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:35,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:35,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:35,288 INFO L87 Difference]: Start difference. First operand 1580 states and 7094 transitions. Second operand 11 states. [2020-01-16 18:04:35,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:35,502 INFO L93 Difference]: Finished difference Result 2976 states and 11811 transitions. [2020-01-16 18:04:35,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:35,504 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:35,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:35,511 INFO L225 Difference]: With dead ends: 2976 [2020-01-16 18:04:35,511 INFO L226 Difference]: Without dead ends: 2950 [2020-01-16 18:04:35,512 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 18:04:35,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2020-01-16 18:04:35,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 1574. [2020-01-16 18:04:35,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:04:35,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7077 transitions. [2020-01-16 18:04:35,585 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7077 transitions. Word has length 28 [2020-01-16 18:04:35,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:35,585 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7077 transitions. [2020-01-16 18:04:35,585 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:35,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7077 transitions. [2020-01-16 18:04:35,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:35,588 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:35,588 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 18:04:35,588 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 18:04:35,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:35,589 INFO L82 PathProgramCache]: Analyzing trace with hash 823275178, now seen corresponding path program 125 times [2020-01-16 18:04:35,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:35,589 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219128830] [2020-01-16 18:04:35,589 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:35,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:36,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:36,137 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219128830] [2020-01-16 18:04:36,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:36,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:36,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577400354] [2020-01-16 18:04:36,137 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:36,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:36,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:36,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:36,139 INFO L87 Difference]: Start difference. First operand 1574 states and 7077 transitions. Second operand 11 states. [2020-01-16 18:04:36,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:36,417 INFO L93 Difference]: Finished difference Result 2974 states and 11808 transitions. [2020-01-16 18:04:36,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:36,417 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:36,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:36,424 INFO L225 Difference]: With dead ends: 2974 [2020-01-16 18:04:36,424 INFO L226 Difference]: Without dead ends: 2958 [2020-01-16 18:04:36,424 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 18:04:36,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2958 states. [2020-01-16 18:04:36,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2958 to 1581. [2020-01-16 18:04:36,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:04:36,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7090 transitions. [2020-01-16 18:04:36,496 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7090 transitions. Word has length 28 [2020-01-16 18:04:36,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:36,496 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7090 transitions. [2020-01-16 18:04:36,497 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:36,497 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7090 transitions. [2020-01-16 18:04:36,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:36,499 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:36,499 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:36,499 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 18:04:36,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:36,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1567977676, now seen corresponding path program 126 times [2020-01-16 18:04:36,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:36,500 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657130624] [2020-01-16 18:04:36,500 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:36,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:37,044 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:04:37,053 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 18:04:37,053 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657130624] [2020-01-16 18:04:37,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:37,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:37,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772940513] [2020-01-16 18:04:37,054 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:37,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:37,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:37,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:37,054 INFO L87 Difference]: Start difference. First operand 1581 states and 7090 transitions. Second operand 11 states. [2020-01-16 18:04:37,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:37,229 INFO L93 Difference]: Finished difference Result 2978 states and 11809 transitions. [2020-01-16 18:04:37,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:37,230 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:37,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:37,237 INFO L225 Difference]: With dead ends: 2978 [2020-01-16 18:04:37,238 INFO L226 Difference]: Without dead ends: 2945 [2020-01-16 18:04:37,238 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:04:37,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2945 states. [2020-01-16 18:04:37,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2945 to 1568. [2020-01-16 18:04:37,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 18:04:37,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7060 transitions. [2020-01-16 18:04:37,327 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7060 transitions. Word has length 28 [2020-01-16 18:04:37,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:37,327 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7060 transitions. [2020-01-16 18:04:37,327 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:37,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7060 transitions. [2020-01-16 18:04:37,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:37,329 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:37,329 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:37,329 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 18:04:37,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:37,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1871670534, now seen corresponding path program 127 times [2020-01-16 18:04:37,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:37,330 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047933134] [2020-01-16 18:04:37,330 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:37,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:37,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:37,863 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047933134] [2020-01-16 18:04:37,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:37,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:37,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035859970] [2020-01-16 18:04:37,863 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:37,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:37,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:37,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:37,864 INFO L87 Difference]: Start difference. First operand 1568 states and 7060 transitions. Second operand 11 states. [2020-01-16 18:04:38,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:38,075 INFO L93 Difference]: Finished difference Result 2961 states and 11787 transitions. [2020-01-16 18:04:38,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:38,076 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:38,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:38,084 INFO L225 Difference]: With dead ends: 2961 [2020-01-16 18:04:38,085 INFO L226 Difference]: Without dead ends: 2946 [2020-01-16 18:04:38,085 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 18:04:38,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2946 states. [2020-01-16 18:04:38,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2946 to 1578. [2020-01-16 18:04:38,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:04:38,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7088 transitions. [2020-01-16 18:04:38,185 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7088 transitions. Word has length 28 [2020-01-16 18:04:38,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:38,185 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7088 transitions. [2020-01-16 18:04:38,186 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:38,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7088 transitions. [2020-01-16 18:04:38,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:38,188 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:38,188 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 18:04:38,188 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 18:04:38,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:38,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1678594264, now seen corresponding path program 128 times [2020-01-16 18:04:38,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:38,189 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546574914] [2020-01-16 18:04:38,189 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:38,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:38,708 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:04:38,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:38,716 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546574914] [2020-01-16 18:04:38,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:38,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:38,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454785278] [2020-01-16 18:04:38,716 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:38,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:38,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:38,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:38,717 INFO L87 Difference]: Start difference. First operand 1578 states and 7088 transitions. Second operand 11 states. [2020-01-16 18:04:38,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:38,944 INFO L93 Difference]: Finished difference Result 2962 states and 11784 transitions. [2020-01-16 18:04:38,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:38,944 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:38,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:38,951 INFO L225 Difference]: With dead ends: 2962 [2020-01-16 18:04:38,951 INFO L226 Difference]: Without dead ends: 2941 [2020-01-16 18:04:38,951 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:04:38,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2941 states. [2020-01-16 18:04:39,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2941 to 1573. [2020-01-16 18:04:39,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:04:39,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7074 transitions. [2020-01-16 18:04:39,018 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7074 transitions. Word has length 28 [2020-01-16 18:04:39,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:39,019 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7074 transitions. [2020-01-16 18:04:39,019 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:39,019 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7074 transitions. [2020-01-16 18:04:39,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:39,021 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:39,021 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 18:04:39,021 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 18:04:39,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:39,021 INFO L82 PathProgramCache]: Analyzing trace with hash 798585154, now seen corresponding path program 129 times [2020-01-16 18:04:39,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:39,022 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87396504] [2020-01-16 18:04:39,022 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:39,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:39,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:39,663 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87396504] [2020-01-16 18:04:39,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:39,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:39,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695891157] [2020-01-16 18:04:39,663 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:39,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:39,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:39,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:39,664 INFO L87 Difference]: Start difference. First operand 1573 states and 7074 transitions. Second operand 11 states. [2020-01-16 18:04:39,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:39,930 INFO L93 Difference]: Finished difference Result 2963 states and 11786 transitions. [2020-01-16 18:04:39,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:39,930 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:39,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:39,937 INFO L225 Difference]: With dead ends: 2963 [2020-01-16 18:04:39,937 INFO L226 Difference]: Without dead ends: 2948 [2020-01-16 18:04:39,938 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 18:04:39,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2948 states. [2020-01-16 18:04:40,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2948 to 1578. [2020-01-16 18:04:40,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:04:40,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7083 transitions. [2020-01-16 18:04:40,005 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7083 transitions. Word has length 28 [2020-01-16 18:04:40,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:40,005 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7083 transitions. [2020-01-16 18:04:40,005 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:40,005 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7083 transitions. [2020-01-16 18:04:40,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:40,007 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:40,007 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:40,007 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 18:04:40,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:40,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1262274648, now seen corresponding path program 130 times [2020-01-16 18:04:40,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:40,008 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869880012] [2020-01-16 18:04:40,008 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:40,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:40,530 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 18:04:40,531 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869880012] [2020-01-16 18:04:40,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:40,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:40,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630566138] [2020-01-16 18:04:40,531 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:40,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:40,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:40,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:40,532 INFO L87 Difference]: Start difference. First operand 1578 states and 7083 transitions. Second operand 11 states. [2020-01-16 18:04:40,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:40,740 INFO L93 Difference]: Finished difference Result 2966 states and 11787 transitions. [2020-01-16 18:04:40,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:40,740 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:40,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:40,748 INFO L225 Difference]: With dead ends: 2966 [2020-01-16 18:04:40,748 INFO L226 Difference]: Without dead ends: 2943 [2020-01-16 18:04:40,748 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 18:04:40,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2943 states. [2020-01-16 18:04:40,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2943 to 1573. [2020-01-16 18:04:40,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:04:40,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7069 transitions. [2020-01-16 18:04:40,815 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7069 transitions. Word has length 28 [2020-01-16 18:04:40,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:40,815 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7069 transitions. [2020-01-16 18:04:40,815 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:40,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7069 transitions. [2020-01-16 18:04:40,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:40,818 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:40,818 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 18:04:40,818 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 18:04:40,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:40,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1140738686, now seen corresponding path program 131 times [2020-01-16 18:04:40,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:40,818 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274106512] [2020-01-16 18:04:40,818 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:40,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:41,334 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 18:04:41,335 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274106512] [2020-01-16 18:04:41,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:41,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:41,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008675342] [2020-01-16 18:04:41,335 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:41,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:41,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:41,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:41,336 INFO L87 Difference]: Start difference. First operand 1573 states and 7069 transitions. Second operand 11 states. [2020-01-16 18:04:41,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:41,513 INFO L93 Difference]: Finished difference Result 2966 states and 11788 transitions. [2020-01-16 18:04:41,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:41,514 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:41,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:41,521 INFO L225 Difference]: With dead ends: 2966 [2020-01-16 18:04:41,521 INFO L226 Difference]: Without dead ends: 2950 [2020-01-16 18:04:41,521 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:04:41,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2020-01-16 18:04:41,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 1579. [2020-01-16 18:04:41,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:04:41,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7080 transitions. [2020-01-16 18:04:41,588 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7080 transitions. Word has length 28 [2020-01-16 18:04:41,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:41,588 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7080 transitions. [2020-01-16 18:04:41,588 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:41,588 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7080 transitions. [2020-01-16 18:04:41,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:41,590 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:41,590 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:41,590 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 18:04:41,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:41,591 INFO L82 PathProgramCache]: Analyzing trace with hash 348666310, now seen corresponding path program 132 times [2020-01-16 18:04:41,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:41,591 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548434113] [2020-01-16 18:04:41,591 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:41,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:42,112 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 18:04:42,112 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548434113] [2020-01-16 18:04:42,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:42,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:42,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677840158] [2020-01-16 18:04:42,113 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:42,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:42,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:42,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:42,113 INFO L87 Difference]: Start difference. First operand 1579 states and 7080 transitions. Second operand 11 states. [2020-01-16 18:04:42,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:42,317 INFO L93 Difference]: Finished difference Result 2968 states and 11786 transitions. [2020-01-16 18:04:42,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:42,317 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:42,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:42,325 INFO L225 Difference]: With dead ends: 2968 [2020-01-16 18:04:42,325 INFO L226 Difference]: Without dead ends: 2939 [2020-01-16 18:04:42,325 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 18:04:42,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2939 states. [2020-01-16 18:04:42,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2939 to 1568. [2020-01-16 18:04:42,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 18:04:42,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7055 transitions. [2020-01-16 18:04:42,392 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7055 transitions. Word has length 28 [2020-01-16 18:04:42,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:42,392 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7055 transitions. [2020-01-16 18:04:42,392 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:42,392 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7055 transitions. [2020-01-16 18:04:42,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:42,395 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:42,395 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 18:04:42,395 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 18:04:42,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:42,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1882173638, now seen corresponding path program 133 times [2020-01-16 18:04:42,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:42,395 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840148005] [2020-01-16 18:04:42,416 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:42,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:42,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:42,953 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840148005] [2020-01-16 18:04:42,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:42,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:42,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933944028] [2020-01-16 18:04:42,953 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:42,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:42,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:42,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:42,954 INFO L87 Difference]: Start difference. First operand 1568 states and 7055 transitions. Second operand 11 states. [2020-01-16 18:04:43,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:43,121 INFO L93 Difference]: Finished difference Result 2977 states and 11814 transitions. [2020-01-16 18:04:43,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:43,121 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:43,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:43,129 INFO L225 Difference]: With dead ends: 2977 [2020-01-16 18:04:43,129 INFO L226 Difference]: Without dead ends: 2962 [2020-01-16 18:04:43,129 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:04:43,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2962 states. [2020-01-16 18:04:43,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2962 to 1581. [2020-01-16 18:04:43,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:04:43,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7090 transitions. [2020-01-16 18:04:43,197 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7090 transitions. Word has length 28 [2020-01-16 18:04:43,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:43,198 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7090 transitions. [2020-01-16 18:04:43,198 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:43,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7090 transitions. [2020-01-16 18:04:43,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:43,200 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:43,200 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:43,200 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 18:04:43,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:43,200 INFO L82 PathProgramCache]: Analyzing trace with hash -923388662, now seen corresponding path program 134 times [2020-01-16 18:04:43,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:43,201 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395431580] [2020-01-16 18:04:43,201 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:43,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:43,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:43,736 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395431580] [2020-01-16 18:04:43,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:43,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:43,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69944148] [2020-01-16 18:04:43,736 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:43,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:43,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:43,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:43,737 INFO L87 Difference]: Start difference. First operand 1581 states and 7090 transitions. Second operand 11 states. [2020-01-16 18:04:43,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:43,874 INFO L93 Difference]: Finished difference Result 2982 states and 11818 transitions. [2020-01-16 18:04:43,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:43,875 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:43,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:43,883 INFO L225 Difference]: With dead ends: 2982 [2020-01-16 18:04:43,883 INFO L226 Difference]: Without dead ends: 2956 [2020-01-16 18:04:43,883 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:04:43,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2020-01-16 18:04:43,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 1575. [2020-01-16 18:04:43,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:04:43,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7073 transitions. [2020-01-16 18:04:43,950 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7073 transitions. Word has length 28 [2020-01-16 18:04:43,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:43,950 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7073 transitions. [2020-01-16 18:04:43,950 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:43,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7073 transitions. [2020-01-16 18:04:43,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:43,952 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:43,952 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 18:04:43,953 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 18:04:43,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:43,953 INFO L82 PathProgramCache]: Analyzing trace with hash -801852700, now seen corresponding path program 135 times [2020-01-16 18:04:43,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:43,953 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721905399] [2020-01-16 18:04:43,953 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:43,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:44,485 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 18:04:44,485 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721905399] [2020-01-16 18:04:44,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:44,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:44,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972167143] [2020-01-16 18:04:44,486 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:44,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:44,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:44,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:44,486 INFO L87 Difference]: Start difference. First operand 1575 states and 7073 transitions. Second operand 11 states. [2020-01-16 18:04:44,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:44,660 INFO L93 Difference]: Finished difference Result 2974 states and 11803 transitions. [2020-01-16 18:04:44,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:44,661 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:44,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:44,668 INFO L225 Difference]: With dead ends: 2974 [2020-01-16 18:04:44,669 INFO L226 Difference]: Without dead ends: 2959 [2020-01-16 18:04:44,669 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 18:04:44,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2959 states. [2020-01-16 18:04:44,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2959 to 1580. [2020-01-16 18:04:44,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:04:44,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7082 transitions. [2020-01-16 18:04:44,736 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7082 transitions. Word has length 28 [2020-01-16 18:04:44,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:44,737 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7082 transitions. [2020-01-16 18:04:44,737 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:44,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7082 transitions. [2020-01-16 18:04:44,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:44,739 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:44,739 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 18:04:44,739 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 18:04:44,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:44,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1432254794, now seen corresponding path program 136 times [2020-01-16 18:04:44,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:44,740 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56599699] [2020-01-16 18:04:44,740 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:44,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:45,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:45,254 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56599699] [2020-01-16 18:04:45,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:45,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:45,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103933017] [2020-01-16 18:04:45,255 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:45,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:45,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:45,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:45,256 INFO L87 Difference]: Start difference. First operand 1580 states and 7082 transitions. Second operand 11 states. [2020-01-16 18:04:45,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:45,433 INFO L93 Difference]: Finished difference Result 2977 states and 11804 transitions. [2020-01-16 18:04:45,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:45,434 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:45,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:45,441 INFO L225 Difference]: With dead ends: 2977 [2020-01-16 18:04:45,442 INFO L226 Difference]: Without dead ends: 2954 [2020-01-16 18:04:45,442 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 18:04:45,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2020-01-16 18:04:45,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 1575. [2020-01-16 18:04:45,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:04:45,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7068 transitions. [2020-01-16 18:04:45,509 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7068 transitions. Word has length 28 [2020-01-16 18:04:45,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:45,509 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7068 transitions. [2020-01-16 18:04:45,509 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:45,509 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7068 transitions. [2020-01-16 18:04:45,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:45,511 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:45,511 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 18:04:45,511 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 18:04:45,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:45,512 INFO L82 PathProgramCache]: Analyzing trace with hash -385533084, now seen corresponding path program 137 times [2020-01-16 18:04:45,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:45,512 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168322638] [2020-01-16 18:04:45,512 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:45,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:46,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:46,063 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168322638] [2020-01-16 18:04:46,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:46,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:46,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795969249] [2020-01-16 18:04:46,064 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:46,064 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:46,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:46,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:46,064 INFO L87 Difference]: Start difference. First operand 1575 states and 7068 transitions. Second operand 11 states. [2020-01-16 18:04:46,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:46,200 INFO L93 Difference]: Finished difference Result 2989 states and 11828 transitions. [2020-01-16 18:04:46,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:46,200 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:46,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:46,207 INFO L225 Difference]: With dead ends: 2989 [2020-01-16 18:04:46,207 INFO L226 Difference]: Without dead ends: 2969 [2020-01-16 18:04:46,207 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:04:46,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2969 states. [2020-01-16 18:04:46,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2969 to 1585. [2020-01-16 18:04:46,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 18:04:46,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7085 transitions. [2020-01-16 18:04:46,274 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7085 transitions. Word has length 28 [2020-01-16 18:04:46,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:46,274 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7085 transitions. [2020-01-16 18:04:46,274 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:46,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7085 transitions. [2020-01-16 18:04:46,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:46,276 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:46,277 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:46,277 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 18:04:46,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:46,277 INFO L82 PathProgramCache]: Analyzing trace with hash 359169414, now seen corresponding path program 138 times [2020-01-16 18:04:46,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:46,277 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389140086] [2020-01-16 18:04:46,277 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:46,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:46,813 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 18:04:46,813 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389140086] [2020-01-16 18:04:46,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:46,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:46,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694100583] [2020-01-16 18:04:46,813 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:46,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:46,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:46,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:46,814 INFO L87 Difference]: Start difference. First operand 1585 states and 7085 transitions. Second operand 11 states. [2020-01-16 18:04:47,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:47,016 INFO L93 Difference]: Finished difference Result 2987 states and 11816 transitions. [2020-01-16 18:04:47,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:47,016 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:47,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:47,023 INFO L225 Difference]: With dead ends: 2987 [2020-01-16 18:04:47,023 INFO L226 Difference]: Without dead ends: 2952 [2020-01-16 18:04:47,023 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 18:04:47,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2020-01-16 18:04:47,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 1568. [2020-01-16 18:04:47,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 18:04:47,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7048 transitions. [2020-01-16 18:04:47,090 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7048 transitions. Word has length 28 [2020-01-16 18:04:47,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:47,090 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7048 transitions. [2020-01-16 18:04:47,090 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:47,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7048 transitions. [2020-01-16 18:04:47,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:47,093 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:47,093 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 18:04:47,093 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 18:04:47,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:47,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1657588056, now seen corresponding path program 139 times [2020-01-16 18:04:47,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:47,093 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367110497] [2020-01-16 18:04:47,093 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:47,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:47,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:47,663 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367110497] [2020-01-16 18:04:47,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:47,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:47,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811948283] [2020-01-16 18:04:47,664 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:47,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:47,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:47,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:47,664 INFO L87 Difference]: Start difference. First operand 1568 states and 7048 transitions. Second operand 11 states. [2020-01-16 18:04:47,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:47,834 INFO L93 Difference]: Finished difference Result 2984 states and 11826 transitions. [2020-01-16 18:04:47,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:47,834 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:47,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:47,841 INFO L225 Difference]: With dead ends: 2984 [2020-01-16 18:04:47,841 INFO L226 Difference]: Without dead ends: 2968 [2020-01-16 18:04:47,842 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 18:04:47,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2968 states. [2020-01-16 18:04:47,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2968 to 1583. [2020-01-16 18:04:47,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:04:47,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7089 transitions. [2020-01-16 18:04:47,913 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7089 transitions. Word has length 28 [2020-01-16 18:04:47,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:47,913 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7089 transitions. [2020-01-16 18:04:47,913 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:47,913 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7089 transitions. [2020-01-16 18:04:47,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:47,916 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:47,916 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 18:04:47,916 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 18:04:47,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:47,916 INFO L82 PathProgramCache]: Analyzing trace with hash -912885558, now seen corresponding path program 140 times [2020-01-16 18:04:47,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:47,916 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562554031] [2020-01-16 18:04:47,917 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:47,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:48,460 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 18:04:48,460 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562554031] [2020-01-16 18:04:48,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:48,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:48,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996265312] [2020-01-16 18:04:48,461 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:48,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:48,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:48,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:48,462 INFO L87 Difference]: Start difference. First operand 1583 states and 7089 transitions. Second operand 11 states. [2020-01-16 18:04:48,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:48,591 INFO L93 Difference]: Finished difference Result 2988 states and 11827 transitions. [2020-01-16 18:04:48,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:48,592 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:48,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:48,599 INFO L225 Difference]: With dead ends: 2988 [2020-01-16 18:04:48,599 INFO L226 Difference]: Without dead ends: 2961 [2020-01-16 18:04:48,599 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:04:48,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2020-01-16 18:04:48,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 1576. [2020-01-16 18:04:48,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:04:48,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7069 transitions. [2020-01-16 18:04:48,666 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7069 transitions. Word has length 28 [2020-01-16 18:04:48,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:48,666 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7069 transitions. [2020-01-16 18:04:48,666 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:48,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7069 transitions. [2020-01-16 18:04:48,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:48,669 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:48,669 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:48,669 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 18:04:48,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:48,669 INFO L82 PathProgramCache]: Analyzing trace with hash -46647098, now seen corresponding path program 141 times [2020-01-16 18:04:48,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:48,669 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493292553] [2020-01-16 18:04:48,669 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:48,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:49,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:49,188 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493292553] [2020-01-16 18:04:49,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:49,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:49,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325039369] [2020-01-16 18:04:49,189 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:49,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:49,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:49,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:49,189 INFO L87 Difference]: Start difference. First operand 1576 states and 7069 transitions. Second operand 11 states. [2020-01-16 18:04:49,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:49,364 INFO L93 Difference]: Finished difference Result 2981 states and 11814 transitions. [2020-01-16 18:04:49,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:49,367 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:49,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:49,373 INFO L225 Difference]: With dead ends: 2981 [2020-01-16 18:04:49,374 INFO L226 Difference]: Without dead ends: 2965 [2020-01-16 18:04:49,374 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 18:04:49,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2965 states. [2020-01-16 18:04:49,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2965 to 1582. [2020-01-16 18:04:49,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 18:04:49,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7080 transitions. [2020-01-16 18:04:49,441 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7080 transitions. Word has length 28 [2020-01-16 18:04:49,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:49,441 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7080 transitions. [2020-01-16 18:04:49,441 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:49,441 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7080 transitions. [2020-01-16 18:04:49,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:49,444 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:49,444 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 18:04:49,444 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 18:04:49,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:49,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1442757898, now seen corresponding path program 142 times [2020-01-16 18:04:49,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:49,444 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217375976] [2020-01-16 18:04:49,444 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:49,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:49,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:49,980 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217375976] [2020-01-16 18:04:49,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:49,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:49,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190314891] [2020-01-16 18:04:49,980 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:49,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:49,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:49,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:49,981 INFO L87 Difference]: Start difference. First operand 1582 states and 7080 transitions. Second operand 11 states. [2020-01-16 18:04:50,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:50,185 INFO L93 Difference]: Finished difference Result 2983 states and 11812 transitions. [2020-01-16 18:04:50,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:50,186 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:50,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:50,193 INFO L225 Difference]: With dead ends: 2983 [2020-01-16 18:04:50,194 INFO L226 Difference]: Without dead ends: 2959 [2020-01-16 18:04:50,194 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 18:04:50,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2959 states. [2020-01-16 18:04:50,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2959 to 1576. [2020-01-16 18:04:50,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:04:50,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7063 transitions. [2020-01-16 18:04:50,262 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7063 transitions. Word has length 28 [2020-01-16 18:04:50,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:50,262 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7063 transitions. [2020-01-16 18:04:50,262 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:50,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7063 transitions. [2020-01-16 18:04:50,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:50,264 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:50,265 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:50,265 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 18:04:50,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:50,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1985970938, now seen corresponding path program 143 times [2020-01-16 18:04:50,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:50,265 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280926892] [2020-01-16 18:04:50,266 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:50,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:50,826 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 18:04:50,827 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280926892] [2020-01-16 18:04:50,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:50,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:50,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595556663] [2020-01-16 18:04:50,827 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:50,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:50,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:50,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:50,828 INFO L87 Difference]: Start difference. First operand 1576 states and 7063 transitions. Second operand 11 states. [2020-01-16 18:04:50,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:50,972 INFO L93 Difference]: Finished difference Result 2993 states and 11831 transitions. [2020-01-16 18:04:50,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:50,972 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:50,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:50,980 INFO L225 Difference]: With dead ends: 2993 [2020-01-16 18:04:50,980 INFO L226 Difference]: Without dead ends: 2973 [2020-01-16 18:04:50,980 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:04:51,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2973 states. [2020-01-16 18:04:51,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2973 to 1586. [2020-01-16 18:04:51,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1586 states. [2020-01-16 18:04:51,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 7080 transitions. [2020-01-16 18:04:51,047 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 7080 transitions. Word has length 28 [2020-01-16 18:04:51,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:51,048 INFO L478 AbstractCegarLoop]: Abstraction has 1586 states and 7080 transitions. [2020-01-16 18:04:51,048 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:51,048 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 7080 transitions. [2020-01-16 18:04:51,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:51,050 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:51,050 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:51,050 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 18:04:51,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:51,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1241268440, now seen corresponding path program 144 times [2020-01-16 18:04:51,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:51,051 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8299765] [2020-01-16 18:04:51,051 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:51,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:51,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:51,584 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8299765] [2020-01-16 18:04:51,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:51,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:51,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001909367] [2020-01-16 18:04:51,585 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:51,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:51,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:51,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:51,585 INFO L87 Difference]: Start difference. First operand 1586 states and 7080 transitions. Second operand 11 states. [2020-01-16 18:04:51,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:51,768 INFO L93 Difference]: Finished difference Result 2991 states and 11819 transitions. [2020-01-16 18:04:51,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:51,768 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:51,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:51,775 INFO L225 Difference]: With dead ends: 2991 [2020-01-16 18:04:51,776 INFO L226 Difference]: Without dead ends: 2948 [2020-01-16 18:04:51,776 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 18:04:51,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2948 states. [2020-01-16 18:04:51,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2948 to 1561. [2020-01-16 18:04:51,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1561 states. [2020-01-16 18:04:51,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1561 states to 1561 states and 7029 transitions. [2020-01-16 18:04:51,843 INFO L78 Accepts]: Start accepts. Automaton has 1561 states and 7029 transitions. Word has length 28 [2020-01-16 18:04:51,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:51,843 INFO L478 AbstractCegarLoop]: Abstraction has 1561 states and 7029 transitions. [2020-01-16 18:04:51,844 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:51,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1561 states and 7029 transitions. [2020-01-16 18:04:51,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:51,846 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:51,846 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 18:04:51,846 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 18:04:51,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:51,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1398945230, now seen corresponding path program 145 times [2020-01-16 18:04:51,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:51,846 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233332142] [2020-01-16 18:04:51,847 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:51,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:52,278 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:04:52,397 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 18:04:52,397 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233332142] [2020-01-16 18:04:52,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:52,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:52,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725949733] [2020-01-16 18:04:52,398 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:52,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:52,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:52,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:52,398 INFO L87 Difference]: Start difference. First operand 1561 states and 7029 transitions. Second operand 11 states. [2020-01-16 18:04:52,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:52,575 INFO L93 Difference]: Finished difference Result 2946 states and 11739 transitions. [2020-01-16 18:04:52,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:52,575 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:52,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:52,582 INFO L225 Difference]: With dead ends: 2946 [2020-01-16 18:04:52,582 INFO L226 Difference]: Without dead ends: 2931 [2020-01-16 18:04:52,582 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 18:04:52,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2931 states. [2020-01-16 18:04:52,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2931 to 1577. [2020-01-16 18:04:52,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:04:52,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7083 transitions. [2020-01-16 18:04:52,650 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7083 transitions. Word has length 28 [2020-01-16 18:04:52,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:52,650 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7083 transitions. [2020-01-16 18:04:52,650 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:52,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7083 transitions. [2020-01-16 18:04:52,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:52,653 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:52,653 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 18:04:52,653 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 18:04:52,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:52,653 INFO L82 PathProgramCache]: Analyzing trace with hash -654242732, now seen corresponding path program 146 times [2020-01-16 18:04:52,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:52,653 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793384080] [2020-01-16 18:04:52,653 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:52,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:53,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:53,186 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793384080] [2020-01-16 18:04:53,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:53,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:53,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442282991] [2020-01-16 18:04:53,186 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:53,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:53,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:53,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:53,187 INFO L87 Difference]: Start difference. First operand 1577 states and 7083 transitions. Second operand 11 states. [2020-01-16 18:04:53,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:53,366 INFO L93 Difference]: Finished difference Result 2947 states and 11736 transitions. [2020-01-16 18:04:53,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:53,366 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:53,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:53,374 INFO L225 Difference]: With dead ends: 2947 [2020-01-16 18:04:53,374 INFO L226 Difference]: Without dead ends: 2926 [2020-01-16 18:04:53,375 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:04:53,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2020-01-16 18:04:53,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 1572. [2020-01-16 18:04:53,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:04:53,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7069 transitions. [2020-01-16 18:04:53,441 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7069 transitions. Word has length 28 [2020-01-16 18:04:53,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:53,441 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7069 transitions. [2020-01-16 18:04:53,441 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:53,441 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7069 transitions. [2020-01-16 18:04:53,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:53,444 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:53,444 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 18:04:53,444 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 18:04:53,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:53,444 INFO L82 PathProgramCache]: Analyzing trace with hash 211995728, now seen corresponding path program 147 times [2020-01-16 18:04:53,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:53,444 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150111222] [2020-01-16 18:04:53,444 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:53,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:53,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:53,970 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150111222] [2020-01-16 18:04:53,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:53,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:53,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146747890] [2020-01-16 18:04:53,971 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:53,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:53,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:53,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:53,971 INFO L87 Difference]: Start difference. First operand 1572 states and 7069 transitions. Second operand 11 states. [2020-01-16 18:04:54,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:54,184 INFO L93 Difference]: Finished difference Result 2951 states and 11743 transitions. [2020-01-16 18:04:54,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:54,184 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:54,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:54,191 INFO L225 Difference]: With dead ends: 2951 [2020-01-16 18:04:54,192 INFO L226 Difference]: Without dead ends: 2936 [2020-01-16 18:04:54,192 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:04:54,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2936 states. [2020-01-16 18:04:54,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2936 to 1578. [2020-01-16 18:04:54,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:04:54,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7080 transitions. [2020-01-16 18:04:54,260 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7080 transitions. Word has length 28 [2020-01-16 18:04:54,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:54,260 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7080 transitions. [2020-01-16 18:04:54,260 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:54,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7080 transitions. [2020-01-16 18:04:54,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:54,262 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:54,262 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:54,262 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 18:04:54,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:54,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1701400724, now seen corresponding path program 148 times [2020-01-16 18:04:54,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:54,263 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936166824] [2020-01-16 18:04:54,263 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:54,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:54,787 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 18:04:54,787 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936166824] [2020-01-16 18:04:54,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:54,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:54,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152193085] [2020-01-16 18:04:54,788 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:54,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:54,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:54,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:54,788 INFO L87 Difference]: Start difference. First operand 1578 states and 7080 transitions. Second operand 11 states. [2020-01-16 18:04:54,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:54,933 INFO L93 Difference]: Finished difference Result 2956 states and 11747 transitions. [2020-01-16 18:04:54,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:54,934 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:54,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:54,942 INFO L225 Difference]: With dead ends: 2956 [2020-01-16 18:04:54,942 INFO L226 Difference]: Without dead ends: 2930 [2020-01-16 18:04:54,942 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:04:54,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2020-01-16 18:04:55,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1572. [2020-01-16 18:04:55,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:04:55,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7063 transitions. [2020-01-16 18:04:55,010 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7063 transitions. Word has length 28 [2020-01-16 18:04:55,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:55,010 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7063 transitions. [2020-01-16 18:04:55,010 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:55,010 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7063 transitions. [2020-01-16 18:04:55,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:55,012 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:55,012 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:04:55,013 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 18:04:55,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:55,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1727328112, now seen corresponding path program 149 times [2020-01-16 18:04:55,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:55,013 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817740991] [2020-01-16 18:04:55,013 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:55,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:55,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:55,550 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817740991] [2020-01-16 18:04:55,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:55,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:55,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827067673] [2020-01-16 18:04:55,550 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:55,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:55,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:55,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:55,551 INFO L87 Difference]: Start difference. First operand 1572 states and 7063 transitions. Second operand 11 states. [2020-01-16 18:04:55,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:55,718 INFO L93 Difference]: Finished difference Result 2954 states and 11744 transitions. [2020-01-16 18:04:55,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:55,718 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:55,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:55,726 INFO L225 Difference]: With dead ends: 2954 [2020-01-16 18:04:55,726 INFO L226 Difference]: Without dead ends: 2938 [2020-01-16 18:04:55,727 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:04:55,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2020-01-16 18:04:55,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 1579. [2020-01-16 18:04:55,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:04:55,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7076 transitions. [2020-01-16 18:04:55,793 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7076 transitions. Word has length 28 [2020-01-16 18:04:55,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:55,793 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7076 transitions. [2020-01-16 18:04:55,793 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:55,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7076 transitions. [2020-01-16 18:04:55,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:55,796 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:55,796 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 18:04:55,796 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 18:04:55,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:55,796 INFO L82 PathProgramCache]: Analyzing trace with hash -982625614, now seen corresponding path program 150 times [2020-01-16 18:04:55,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:55,796 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800154677] [2020-01-16 18:04:55,796 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:55,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:56,338 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 18:04:56,338 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800154677] [2020-01-16 18:04:56,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:56,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:56,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021556381] [2020-01-16 18:04:56,338 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:56,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:56,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:56,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:56,339 INFO L87 Difference]: Start difference. First operand 1579 states and 7076 transitions. Second operand 11 states. [2020-01-16 18:04:56,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:56,485 INFO L93 Difference]: Finished difference Result 2958 states and 11745 transitions. [2020-01-16 18:04:56,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:56,486 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:56,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:56,493 INFO L225 Difference]: With dead ends: 2958 [2020-01-16 18:04:56,494 INFO L226 Difference]: Without dead ends: 2925 [2020-01-16 18:04:56,494 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:04:56,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2925 states. [2020-01-16 18:04:56,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2925 to 1566. [2020-01-16 18:04:56,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1566 states. [2020-01-16 18:04:56,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 7047 transitions. [2020-01-16 18:04:56,561 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 7047 transitions. Word has length 28 [2020-01-16 18:04:56,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:56,561 INFO L478 AbstractCegarLoop]: Abstraction has 1566 states and 7047 transitions. [2020-01-16 18:04:56,561 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:56,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 7047 transitions. [2020-01-16 18:04:56,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:56,563 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:56,564 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 18:04:56,564 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 18:04:56,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:56,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1606068116, now seen corresponding path program 151 times [2020-01-16 18:04:56,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:56,564 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050589624] [2020-01-16 18:04:56,564 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:56,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:57,093 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 18:04:57,093 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050589624] [2020-01-16 18:04:57,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:57,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:57,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687199806] [2020-01-16 18:04:57,094 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:57,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:57,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:57,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:57,094 INFO L87 Difference]: Start difference. First operand 1566 states and 7047 transitions. Second operand 11 states. [2020-01-16 18:04:57,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:57,280 INFO L93 Difference]: Finished difference Result 2933 states and 11703 transitions. [2020-01-16 18:04:57,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:57,281 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:57,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:57,288 INFO L225 Difference]: With dead ends: 2933 [2020-01-16 18:04:57,288 INFO L226 Difference]: Without dead ends: 2918 [2020-01-16 18:04:57,289 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 18:04:57,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2918 states. [2020-01-16 18:04:57,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2918 to 1575. [2020-01-16 18:04:57,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:04:57,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7071 transitions. [2020-01-16 18:04:57,356 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7071 transitions. Word has length 28 [2020-01-16 18:04:57,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:57,356 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7071 transitions. [2020-01-16 18:04:57,356 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:57,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7071 transitions. [2020-01-16 18:04:57,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:57,358 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:57,358 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 18:04:57,358 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 18:04:57,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:57,359 INFO L82 PathProgramCache]: Analyzing trace with hash -861365618, now seen corresponding path program 152 times [2020-01-16 18:04:57,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:57,359 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454293578] [2020-01-16 18:04:57,359 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:57,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:57,881 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:04:57,887 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 18:04:57,888 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454293578] [2020-01-16 18:04:57,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:57,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:57,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163408664] [2020-01-16 18:04:57,888 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:57,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:57,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:57,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:57,889 INFO L87 Difference]: Start difference. First operand 1575 states and 7071 transitions. Second operand 11 states. [2020-01-16 18:04:58,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:58,069 INFO L93 Difference]: Finished difference Result 2934 states and 11700 transitions. [2020-01-16 18:04:58,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:58,070 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:58,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:58,077 INFO L225 Difference]: With dead ends: 2934 [2020-01-16 18:04:58,077 INFO L226 Difference]: Without dead ends: 2913 [2020-01-16 18:04:58,077 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 18:04:58,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2913 states. [2020-01-16 18:04:58,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2913 to 1570. [2020-01-16 18:04:58,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:04:58,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7058 transitions. [2020-01-16 18:04:58,147 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7058 transitions. Word has length 28 [2020-01-16 18:04:58,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:58,147 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7058 transitions. [2020-01-16 18:04:58,147 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:58,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7058 transitions. [2020-01-16 18:04:58,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:58,149 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:58,149 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 18:04:58,149 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 18:04:58,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:58,150 INFO L82 PathProgramCache]: Analyzing trace with hash -2141297918, now seen corresponding path program 153 times [2020-01-16 18:04:58,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:58,150 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142113019] [2020-01-16 18:04:58,150 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:58,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:58,704 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 18:04:58,705 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142113019] [2020-01-16 18:04:58,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:58,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:58,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045889531] [2020-01-16 18:04:58,705 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:58,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:58,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:58,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:58,706 INFO L87 Difference]: Start difference. First operand 1570 states and 7058 transitions. Second operand 11 states. [2020-01-16 18:04:58,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:58,904 INFO L93 Difference]: Finished difference Result 2930 states and 11692 transitions. [2020-01-16 18:04:58,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:58,904 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:58,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:58,912 INFO L225 Difference]: With dead ends: 2930 [2020-01-16 18:04:58,912 INFO L226 Difference]: Without dead ends: 2915 [2020-01-16 18:04:58,912 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 18:04:58,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2915 states. [2020-01-16 18:04:58,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2915 to 1574. [2020-01-16 18:04:58,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:04:58,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7065 transitions. [2020-01-16 18:04:58,979 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7065 transitions. Word has length 28 [2020-01-16 18:04:58,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:58,979 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7065 transitions. [2020-01-16 18:04:58,979 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:58,979 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7065 transitions. [2020-01-16 18:04:58,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:58,981 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:58,981 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 18:04:58,982 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 18:04:58,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:58,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1968050226, now seen corresponding path program 154 times [2020-01-16 18:04:58,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:58,982 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143977879] [2020-01-16 18:04:58,982 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:58,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:04:59,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:04:59,513 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143977879] [2020-01-16 18:04:59,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:04:59,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:04:59,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323363531] [2020-01-16 18:04:59,514 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:04:59,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:04:59,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:04:59,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:04:59,514 INFO L87 Difference]: Start difference. First operand 1574 states and 7065 transitions. Second operand 11 states. [2020-01-16 18:04:59,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:04:59,697 INFO L93 Difference]: Finished difference Result 2929 states and 11686 transitions. [2020-01-16 18:04:59,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:04:59,698 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:04:59,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:04:59,705 INFO L225 Difference]: With dead ends: 2929 [2020-01-16 18:04:59,706 INFO L226 Difference]: Without dead ends: 2911 [2020-01-16 18:04:59,706 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:04:59,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2020-01-16 18:04:59,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 1570. [2020-01-16 18:04:59,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:04:59,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7054 transitions. [2020-01-16 18:04:59,772 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7054 transitions. Word has length 28 [2020-01-16 18:04:59,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:04:59,772 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7054 transitions. [2020-01-16 18:04:59,772 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:04:59,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7054 transitions. [2020-01-16 18:04:59,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:04:59,775 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:04:59,775 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 18:04:59,775 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 18:04:59,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:04:59,775 INFO L82 PathProgramCache]: Analyzing trace with hash 214345538, now seen corresponding path program 155 times [2020-01-16 18:04:59,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:04:59,775 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389959611] [2020-01-16 18:04:59,775 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:04:59,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:00,297 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 18:05:00,297 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389959611] [2020-01-16 18:05:00,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:00,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:00,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847287285] [2020-01-16 18:05:00,298 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:00,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:00,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:00,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:00,298 INFO L87 Difference]: Start difference. First operand 1570 states and 7054 transitions. Second operand 11 states. [2020-01-16 18:05:00,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:00,498 INFO L93 Difference]: Finished difference Result 2932 states and 11692 transitions. [2020-01-16 18:05:00,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:00,500 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:00,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:00,507 INFO L225 Difference]: With dead ends: 2932 [2020-01-16 18:05:00,507 INFO L226 Difference]: Without dead ends: 2916 [2020-01-16 18:05:00,508 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 18:05:00,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2020-01-16 18:05:00,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 1574. [2020-01-16 18:05:00,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:05:00,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7061 transitions. [2020-01-16 18:05:00,576 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7061 transitions. Word has length 28 [2020-01-16 18:05:00,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:00,576 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7061 transitions. [2020-01-16 18:05:00,576 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:00,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7061 transitions. [2020-01-16 18:05:00,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:00,579 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:00,579 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 18:05:00,579 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 18:05:00,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:00,579 INFO L82 PathProgramCache]: Analyzing trace with hash -357109268, now seen corresponding path program 156 times [2020-01-16 18:05:00,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:00,579 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112817090] [2020-01-16 18:05:00,579 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:00,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:01,104 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:05:01,111 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 18:05:01,111 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112817090] [2020-01-16 18:05:01,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:01,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:01,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138350457] [2020-01-16 18:05:01,111 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:01,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:01,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:01,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:01,112 INFO L87 Difference]: Start difference. First operand 1574 states and 7061 transitions. Second operand 11 states. [2020-01-16 18:05:01,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:01,296 INFO L93 Difference]: Finished difference Result 2930 states and 11684 transitions. [2020-01-16 18:05:01,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:01,296 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:01,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:01,303 INFO L225 Difference]: With dead ends: 2930 [2020-01-16 18:05:01,303 INFO L226 Difference]: Without dead ends: 2908 [2020-01-16 18:05:01,304 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:05:01,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2020-01-16 18:05:01,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 1566. [2020-01-16 18:05:01,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1566 states. [2020-01-16 18:05:01,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 7043 transitions. [2020-01-16 18:05:01,370 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 7043 transitions. Word has length 28 [2020-01-16 18:05:01,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:01,371 INFO L478 AbstractCegarLoop]: Abstraction has 1566 states and 7043 transitions. [2020-01-16 18:05:01,371 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:01,371 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 7043 transitions. [2020-01-16 18:05:01,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:01,373 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:01,373 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:01,373 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 18:05:01,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:01,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1595565012, now seen corresponding path program 157 times [2020-01-16 18:05:01,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:01,374 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777971579] [2020-01-16 18:05:01,374 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:01,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:01,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:01,904 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777971579] [2020-01-16 18:05:01,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:01,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:01,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846728] [2020-01-16 18:05:01,905 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:01,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:01,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:01,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:01,905 INFO L87 Difference]: Start difference. First operand 1566 states and 7043 transitions. Second operand 11 states. [2020-01-16 18:05:02,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:02,077 INFO L93 Difference]: Finished difference Result 2945 states and 11722 transitions. [2020-01-16 18:05:02,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:02,078 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:02,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:02,085 INFO L225 Difference]: With dead ends: 2945 [2020-01-16 18:05:02,086 INFO L226 Difference]: Without dead ends: 2930 [2020-01-16 18:05:02,086 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 18:05:02,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2020-01-16 18:05:02,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1577. [2020-01-16 18:05:02,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:05:02,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7072 transitions. [2020-01-16 18:05:02,173 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7072 transitions. Word has length 28 [2020-01-16 18:05:02,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:02,173 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7072 transitions. [2020-01-16 18:05:02,173 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:02,173 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7072 transitions. [2020-01-16 18:05:02,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:02,176 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:02,176 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 18:05:02,176 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 18:05:02,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:02,177 INFO L82 PathProgramCache]: Analyzing trace with hash -106160016, now seen corresponding path program 158 times [2020-01-16 18:05:02,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:02,177 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927215951] [2020-01-16 18:05:02,177 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:02,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:02,700 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 30 [2020-01-16 18:05:02,706 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 18:05:02,707 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927215951] [2020-01-16 18:05:02,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:02,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:02,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660476067] [2020-01-16 18:05:02,707 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:02,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:02,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:02,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:02,708 INFO L87 Difference]: Start difference. First operand 1577 states and 7072 transitions. Second operand 11 states. [2020-01-16 18:05:02,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:02,856 INFO L93 Difference]: Finished difference Result 2950 states and 11726 transitions. [2020-01-16 18:05:02,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:02,857 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:02,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:02,864 INFO L225 Difference]: With dead ends: 2950 [2020-01-16 18:05:02,865 INFO L226 Difference]: Without dead ends: 2924 [2020-01-16 18:05:02,865 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 18:05:02,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2924 states. [2020-01-16 18:05:02,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2924 to 1571. [2020-01-16 18:05:02,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:05:02,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7056 transitions. [2020-01-16 18:05:02,935 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7056 transitions. Word has length 28 [2020-01-16 18:05:02,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:02,935 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7056 transitions. [2020-01-16 18:05:02,935 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:02,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7056 transitions. [2020-01-16 18:05:02,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:02,938 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:02,938 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:02,938 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 18:05:02,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:02,938 INFO L82 PathProgramCache]: Analyzing trace with hash 553231524, now seen corresponding path program 159 times [2020-01-16 18:05:02,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:02,938 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674676499] [2020-01-16 18:05:02,938 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:02,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:03,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:03,471 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674676499] [2020-01-16 18:05:03,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:03,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:03,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603211675] [2020-01-16 18:05:03,471 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:03,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:03,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:03,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:03,472 INFO L87 Difference]: Start difference. First operand 1571 states and 7056 transitions. Second operand 11 states. [2020-01-16 18:05:03,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:03,713 INFO L93 Difference]: Finished difference Result 2937 states and 11701 transitions. [2020-01-16 18:05:03,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:03,713 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:03,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:03,720 INFO L225 Difference]: With dead ends: 2937 [2020-01-16 18:05:03,720 INFO L226 Difference]: Without dead ends: 2922 [2020-01-16 18:05:03,720 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 18:05:03,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2922 states. [2020-01-16 18:05:03,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2922 to 1575. [2020-01-16 18:05:03,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:05:03,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7063 transitions. [2020-01-16 18:05:03,793 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7063 transitions. Word has length 28 [2020-01-16 18:05:03,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:03,793 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7063 transitions. [2020-01-16 18:05:03,793 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:03,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7063 transitions. [2020-01-16 18:05:03,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:03,796 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:03,796 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 18:05:03,796 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 18:05:03,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:03,796 INFO L82 PathProgramCache]: Analyzing trace with hash 726479216, now seen corresponding path program 160 times [2020-01-16 18:05:03,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:03,796 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040459217] [2020-01-16 18:05:03,796 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:03,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:04,315 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 18:05:04,316 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040459217] [2020-01-16 18:05:04,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:04,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:04,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913756937] [2020-01-16 18:05:04,316 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:04,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:04,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:04,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:04,317 INFO L87 Difference]: Start difference. First operand 1575 states and 7063 transitions. Second operand 11 states. [2020-01-16 18:05:04,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:04,504 INFO L93 Difference]: Finished difference Result 2936 states and 11695 transitions. [2020-01-16 18:05:04,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:04,504 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:04,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:04,512 INFO L225 Difference]: With dead ends: 2936 [2020-01-16 18:05:04,512 INFO L226 Difference]: Without dead ends: 2918 [2020-01-16 18:05:04,513 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 18:05:04,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2918 states. [2020-01-16 18:05:04,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2918 to 1571. [2020-01-16 18:05:04,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:05:04,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7052 transitions. [2020-01-16 18:05:04,581 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7052 transitions. Word has length 28 [2020-01-16 18:05:04,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:04,581 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7052 transitions. [2020-01-16 18:05:04,581 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:04,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7052 transitions. [2020-01-16 18:05:04,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:04,584 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:04,584 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 18:05:04,584 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 18:05:04,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:04,584 INFO L82 PathProgramCache]: Analyzing trace with hash 969551140, now seen corresponding path program 161 times [2020-01-16 18:05:04,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:04,584 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264271819] [2020-01-16 18:05:04,584 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:04,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:05,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:05,104 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264271819] [2020-01-16 18:05:05,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:05,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:05,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58877825] [2020-01-16 18:05:05,105 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:05,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:05,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:05,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:05,106 INFO L87 Difference]: Start difference. First operand 1571 states and 7052 transitions. Second operand 11 states. [2020-01-16 18:05:05,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:05,273 INFO L93 Difference]: Finished difference Result 2948 states and 11717 transitions. [2020-01-16 18:05:05,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:05,273 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:05,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:05,280 INFO L225 Difference]: With dead ends: 2948 [2020-01-16 18:05:05,280 INFO L226 Difference]: Without dead ends: 2928 [2020-01-16 18:05:05,281 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 18:05:05,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2020-01-16 18:05:05,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 1576. [2020-01-16 18:05:05,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:05:05,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7060 transitions. [2020-01-16 18:05:05,348 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7060 transitions. Word has length 28 [2020-01-16 18:05:05,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:05,348 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7060 transitions. [2020-01-16 18:05:05,348 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:05,348 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7060 transitions. [2020-01-16 18:05:05,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:05,350 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:05,350 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 18:05:05,350 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 18:05:05,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:05,350 INFO L82 PathProgramCache]: Analyzing trace with hash -346606164, now seen corresponding path program 162 times [2020-01-16 18:05:05,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:05,351 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935660820] [2020-01-16 18:05:05,351 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:05,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:05,874 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 18:05:05,875 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935660820] [2020-01-16 18:05:05,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:05,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:05,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657745041] [2020-01-16 18:05:05,875 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:05,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:05,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:05,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:05,876 INFO L87 Difference]: Start difference. First operand 1576 states and 7060 transitions. Second operand 11 states. [2020-01-16 18:05:06,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:06,112 INFO L93 Difference]: Finished difference Result 2942 states and 11701 transitions. [2020-01-16 18:05:06,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:06,112 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:06,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:06,120 INFO L225 Difference]: With dead ends: 2942 [2020-01-16 18:05:06,120 INFO L226 Difference]: Without dead ends: 2918 [2020-01-16 18:05:06,120 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:05:06,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2918 states. [2020-01-16 18:05:06,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2918 to 1566. [2020-01-16 18:05:06,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1566 states. [2020-01-16 18:05:06,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 7038 transitions. [2020-01-16 18:05:06,187 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 7038 transitions. Word has length 28 [2020-01-16 18:05:06,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:06,187 INFO L478 AbstractCegarLoop]: Abstraction has 1566 states and 7038 transitions. [2020-01-16 18:05:06,187 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:06,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 7038 transitions. [2020-01-16 18:05:06,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:06,189 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:06,189 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:06,189 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 18:05:06,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:06,190 INFO L82 PathProgramCache]: Analyzing trace with hash -840359410, now seen corresponding path program 163 times [2020-01-16 18:05:06,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:06,190 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110436941] [2020-01-16 18:05:06,190 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:06,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:06,718 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 18:05:06,719 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110436941] [2020-01-16 18:05:06,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:06,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:06,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066078600] [2020-01-16 18:05:06,719 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:06,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:06,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:06,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:06,720 INFO L87 Difference]: Start difference. First operand 1566 states and 7038 transitions. Second operand 11 states. [2020-01-16 18:05:06,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:06,910 INFO L93 Difference]: Finished difference Result 2950 states and 11729 transitions. [2020-01-16 18:05:06,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:06,910 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:06,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:06,918 INFO L225 Difference]: With dead ends: 2950 [2020-01-16 18:05:06,918 INFO L226 Difference]: Without dead ends: 2934 [2020-01-16 18:05:06,918 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:05:06,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2934 states. [2020-01-16 18:05:06,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2934 to 1578. [2020-01-16 18:05:06,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:05:06,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7069 transitions. [2020-01-16 18:05:06,987 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7069 transitions. Word has length 28 [2020-01-16 18:05:06,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:06,987 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7069 transitions. [2020-01-16 18:05:06,987 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:06,987 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7069 transitions. [2020-01-16 18:05:06,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:06,989 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:06,989 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 18:05:06,989 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 18:05:06,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:06,990 INFO L82 PathProgramCache]: Analyzing trace with hash -95656912, now seen corresponding path program 164 times [2020-01-16 18:05:06,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:06,990 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467156431] [2020-01-16 18:05:06,990 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:06,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:07,548 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 18:05:07,548 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467156431] [2020-01-16 18:05:07,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:07,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:07,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400162513] [2020-01-16 18:05:07,549 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:07,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:07,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:07,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:07,549 INFO L87 Difference]: Start difference. First operand 1578 states and 7069 transitions. Second operand 11 states. [2020-01-16 18:05:07,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:07,740 INFO L93 Difference]: Finished difference Result 2954 states and 11730 transitions. [2020-01-16 18:05:07,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:07,741 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:07,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:07,748 INFO L225 Difference]: With dead ends: 2954 [2020-01-16 18:05:07,748 INFO L226 Difference]: Without dead ends: 2927 [2020-01-16 18:05:07,748 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 18:05:07,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2927 states. [2020-01-16 18:05:07,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2927 to 1571. [2020-01-16 18:05:07,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:05:07,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7051 transitions. [2020-01-16 18:05:07,825 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7051 transitions. Word has length 28 [2020-01-16 18:05:07,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:07,826 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7051 transitions. [2020-01-16 18:05:07,826 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:07,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7051 transitions. [2020-01-16 18:05:07,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:07,828 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:07,828 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:07,828 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 18:05:07,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:07,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1308437126, now seen corresponding path program 165 times [2020-01-16 18:05:07,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:07,829 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517652957] [2020-01-16 18:05:07,829 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:07,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:08,354 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:05:08,361 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 18:05:08,361 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517652957] [2020-01-16 18:05:08,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:08,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:08,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753151028] [2020-01-16 18:05:08,361 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:08,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:08,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:08,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:08,362 INFO L87 Difference]: Start difference. First operand 1571 states and 7051 transitions. Second operand 11 states. [2020-01-16 18:05:08,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:08,553 INFO L93 Difference]: Finished difference Result 2941 states and 11705 transitions. [2020-01-16 18:05:08,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:08,553 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:08,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:08,561 INFO L225 Difference]: With dead ends: 2941 [2020-01-16 18:05:08,561 INFO L226 Difference]: Without dead ends: 2925 [2020-01-16 18:05:08,561 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:05:08,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2925 states. [2020-01-16 18:05:08,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2925 to 1575. [2020-01-16 18:05:08,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:05:08,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7058 transitions. [2020-01-16 18:05:08,630 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7058 transitions. Word has length 28 [2020-01-16 18:05:08,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:08,631 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7058 transitions. [2020-01-16 18:05:08,631 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:08,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7058 transitions. [2020-01-16 18:05:08,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:08,633 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:08,633 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 18:05:08,633 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 18:05:08,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:08,633 INFO L82 PathProgramCache]: Analyzing trace with hash 736982320, now seen corresponding path program 166 times [2020-01-16 18:05:08,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:08,634 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276204015] [2020-01-16 18:05:08,634 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:08,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:09,147 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 18:05:09,148 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276204015] [2020-01-16 18:05:09,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:09,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:09,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745448108] [2020-01-16 18:05:09,148 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:09,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:09,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:09,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:09,149 INFO L87 Difference]: Start difference. First operand 1575 states and 7058 transitions. Second operand 11 states. [2020-01-16 18:05:09,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:09,359 INFO L93 Difference]: Finished difference Result 2939 states and 11697 transitions. [2020-01-16 18:05:09,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:09,360 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:09,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:09,367 INFO L225 Difference]: With dead ends: 2939 [2020-01-16 18:05:09,367 INFO L226 Difference]: Without dead ends: 2921 [2020-01-16 18:05:09,367 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 18:05:09,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2020-01-16 18:05:09,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 1571. [2020-01-16 18:05:09,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:05:09,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7047 transitions. [2020-01-16 18:05:09,436 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7047 transitions. Word has length 28 [2020-01-16 18:05:09,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:09,436 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7047 transitions. [2020-01-16 18:05:09,436 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:09,436 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7047 transitions. [2020-01-16 18:05:09,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:09,438 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:09,439 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:09,439 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 18:05:09,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:09,439 INFO L82 PathProgramCache]: Analyzing trace with hash -630886714, now seen corresponding path program 167 times [2020-01-16 18:05:09,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:09,439 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662708015] [2020-01-16 18:05:09,439 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:09,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:09,971 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 18:05:09,972 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662708015] [2020-01-16 18:05:09,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:09,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:09,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103909508] [2020-01-16 18:05:09,972 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:09,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:09,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:09,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:09,973 INFO L87 Difference]: Start difference. First operand 1571 states and 7047 transitions. Second operand 11 states. [2020-01-16 18:05:10,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:10,205 INFO L93 Difference]: Finished difference Result 2950 states and 11717 transitions. [2020-01-16 18:05:10,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:10,206 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:10,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:10,213 INFO L225 Difference]: With dead ends: 2950 [2020-01-16 18:05:10,213 INFO L226 Difference]: Without dead ends: 2930 [2020-01-16 18:05:10,213 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 18:05:10,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2020-01-16 18:05:10,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1576. [2020-01-16 18:05:10,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:05:10,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7055 transitions. [2020-01-16 18:05:10,280 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7055 transitions. Word has length 28 [2020-01-16 18:05:10,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:10,280 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7055 transitions. [2020-01-16 18:05:10,281 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:10,281 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7055 transitions. [2020-01-16 18:05:10,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:10,283 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:10,283 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:10,283 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 18:05:10,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:10,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1947044018, now seen corresponding path program 168 times [2020-01-16 18:05:10,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:10,284 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343457126] [2020-01-16 18:05:10,284 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:10,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:10,803 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 18:05:10,804 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343457126] [2020-01-16 18:05:10,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:10,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:10,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527779141] [2020-01-16 18:05:10,804 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:10,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:10,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:10,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:10,805 INFO L87 Difference]: Start difference. First operand 1576 states and 7055 transitions. Second operand 11 states. [2020-01-16 18:05:11,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:11,006 INFO L93 Difference]: Finished difference Result 2944 states and 11701 transitions. [2020-01-16 18:05:11,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:11,007 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:11,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:11,014 INFO L225 Difference]: With dead ends: 2944 [2020-01-16 18:05:11,014 INFO L226 Difference]: Without dead ends: 2915 [2020-01-16 18:05:11,015 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:05:11,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2915 states. [2020-01-16 18:05:11,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2915 to 1561. [2020-01-16 18:05:11,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1561 states. [2020-01-16 18:05:11,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1561 states to 1561 states and 7024 transitions. [2020-01-16 18:05:11,081 INFO L78 Accepts]: Start accepts. Automaton has 1561 states and 7024 transitions. Word has length 28 [2020-01-16 18:05:11,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:11,081 INFO L478 AbstractCegarLoop]: Abstraction has 1561 states and 7024 transitions. [2020-01-16 18:05:11,081 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:11,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1561 states and 7024 transitions. [2020-01-16 18:05:11,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:11,084 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:11,084 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 18:05:11,084 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 18:05:11,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:11,084 INFO L82 PathProgramCache]: Analyzing trace with hash -254171636, now seen corresponding path program 169 times [2020-01-16 18:05:11,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:11,084 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829862520] [2020-01-16 18:05:11,084 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:11,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:11,599 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 18:05:11,599 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829862520] [2020-01-16 18:05:11,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:11,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:11,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361720166] [2020-01-16 18:05:11,600 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:11,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:11,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:11,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:11,601 INFO L87 Difference]: Start difference. First operand 1561 states and 7024 transitions. Second operand 11 states. [2020-01-16 18:05:11,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:11,821 INFO L93 Difference]: Finished difference Result 2932 states and 11702 transitions. [2020-01-16 18:05:11,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:11,821 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:11,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:11,829 INFO L225 Difference]: With dead ends: 2932 [2020-01-16 18:05:11,829 INFO L226 Difference]: Without dead ends: 2917 [2020-01-16 18:05:11,829 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 18:05:11,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2917 states. [2020-01-16 18:05:11,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2917 to 1575. [2020-01-16 18:05:11,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:05:11,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7071 transitions. [2020-01-16 18:05:11,896 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7071 transitions. Word has length 28 [2020-01-16 18:05:11,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:11,896 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7071 transitions. [2020-01-16 18:05:11,896 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:11,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7071 transitions. [2020-01-16 18:05:11,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:11,899 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:11,899 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 18:05:11,899 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 18:05:11,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:11,899 INFO L82 PathProgramCache]: Analyzing trace with hash 490530862, now seen corresponding path program 170 times [2020-01-16 18:05:11,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:11,899 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918553207] [2020-01-16 18:05:11,899 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:11,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:12,330 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-01-16 18:05:12,450 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 18:05:12,450 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918553207] [2020-01-16 18:05:12,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:12,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:12,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257318239] [2020-01-16 18:05:12,450 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:12,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:12,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:12,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:12,451 INFO L87 Difference]: Start difference. First operand 1575 states and 7071 transitions. Second operand 11 states. [2020-01-16 18:05:12,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:12,688 INFO L93 Difference]: Finished difference Result 2933 states and 11699 transitions. [2020-01-16 18:05:12,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:12,689 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:12,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:12,696 INFO L225 Difference]: With dead ends: 2933 [2020-01-16 18:05:12,696 INFO L226 Difference]: Without dead ends: 2912 [2020-01-16 18:05:12,697 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 18:05:12,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2912 states. [2020-01-16 18:05:12,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2912 to 1570. [2020-01-16 18:05:12,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:05:12,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7057 transitions. [2020-01-16 18:05:12,765 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7057 transitions. Word has length 28 [2020-01-16 18:05:12,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:12,765 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7057 transitions. [2020-01-16 18:05:12,765 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:12,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7057 transitions. [2020-01-16 18:05:12,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:12,768 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:12,768 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:12,768 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 18:05:12,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:12,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1327257016, now seen corresponding path program 171 times [2020-01-16 18:05:12,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:12,768 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652843352] [2020-01-16 18:05:12,769 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:12,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:13,287 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 18:05:13,288 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652843352] [2020-01-16 18:05:13,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:13,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:13,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558644778] [2020-01-16 18:05:13,288 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:13,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:13,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:13,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:13,289 INFO L87 Difference]: Start difference. First operand 1570 states and 7057 transitions. Second operand 11 states. [2020-01-16 18:05:13,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:13,478 INFO L93 Difference]: Finished difference Result 2934 states and 11701 transitions. [2020-01-16 18:05:13,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:13,479 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:13,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:13,486 INFO L225 Difference]: With dead ends: 2934 [2020-01-16 18:05:13,486 INFO L226 Difference]: Without dead ends: 2919 [2020-01-16 18:05:13,487 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 18:05:13,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2919 states. [2020-01-16 18:05:13,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2919 to 1575. [2020-01-16 18:05:13,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:05:13,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7066 transitions. [2020-01-16 18:05:13,556 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7066 transitions. Word has length 28 [2020-01-16 18:05:13,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:13,556 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7066 transitions. [2020-01-16 18:05:13,556 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:13,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7066 transitions. [2020-01-16 18:05:13,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:13,558 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:13,558 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:13,558 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 18:05:13,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:13,559 INFO L82 PathProgramCache]: Analyzing trace with hash 906850478, now seen corresponding path program 172 times [2020-01-16 18:05:13,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:13,559 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638971611] [2020-01-16 18:05:13,559 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:13,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:14,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:14,072 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638971611] [2020-01-16 18:05:14,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:14,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:14,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500435112] [2020-01-16 18:05:14,072 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:14,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:14,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:14,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:14,073 INFO L87 Difference]: Start difference. First operand 1575 states and 7066 transitions. Second operand 11 states. [2020-01-16 18:05:14,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:14,275 INFO L93 Difference]: Finished difference Result 2937 states and 11702 transitions. [2020-01-16 18:05:14,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:14,276 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:14,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:14,283 INFO L225 Difference]: With dead ends: 2937 [2020-01-16 18:05:14,284 INFO L226 Difference]: Without dead ends: 2914 [2020-01-16 18:05:14,284 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:05:14,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2914 states. [2020-01-16 18:05:14,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2914 to 1570. [2020-01-16 18:05:14,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:05:14,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7052 transitions. [2020-01-16 18:05:14,351 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7052 transitions. Word has length 28 [2020-01-16 18:05:14,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:14,351 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7052 transitions. [2020-01-16 18:05:14,351 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:14,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7052 transitions. [2020-01-16 18:05:14,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:14,353 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:14,353 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 18:05:14,353 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 18:05:14,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:14,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1028386440, now seen corresponding path program 173 times [2020-01-16 18:05:14,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:14,354 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509828357] [2020-01-16 18:05:14,354 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:14,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:14,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:14,865 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509828357] [2020-01-16 18:05:14,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:14,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:14,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145304548] [2020-01-16 18:05:14,866 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:14,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:14,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:14,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:14,866 INFO L87 Difference]: Start difference. First operand 1570 states and 7052 transitions. Second operand 11 states. [2020-01-16 18:05:15,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:15,079 INFO L93 Difference]: Finished difference Result 2937 states and 11703 transitions. [2020-01-16 18:05:15,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:15,079 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:15,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:15,087 INFO L225 Difference]: With dead ends: 2937 [2020-01-16 18:05:15,087 INFO L226 Difference]: Without dead ends: 2921 [2020-01-16 18:05:15,087 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:05:15,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2020-01-16 18:05:15,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 1576. [2020-01-16 18:05:15,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:05:15,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7063 transitions. [2020-01-16 18:05:15,153 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7063 transitions. Word has length 28 [2020-01-16 18:05:15,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:15,153 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7063 transitions. [2020-01-16 18:05:15,153 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:15,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7063 transitions. [2020-01-16 18:05:15,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:15,156 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:15,156 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:15,156 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 18:05:15,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:15,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1777175860, now seen corresponding path program 174 times [2020-01-16 18:05:15,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:15,156 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077081424] [2020-01-16 18:05:15,157 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:15,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:15,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:15,677 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077081424] [2020-01-16 18:05:15,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:15,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:15,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983858665] [2020-01-16 18:05:15,678 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:15,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:15,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:15,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:15,678 INFO L87 Difference]: Start difference. First operand 1576 states and 7063 transitions. Second operand 11 states. [2020-01-16 18:05:15,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:15,853 INFO L93 Difference]: Finished difference Result 2939 states and 11701 transitions. [2020-01-16 18:05:15,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:15,854 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:15,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:15,860 INFO L225 Difference]: With dead ends: 2939 [2020-01-16 18:05:15,861 INFO L226 Difference]: Without dead ends: 2910 [2020-01-16 18:05:15,861 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 18:05:15,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2910 states. [2020-01-16 18:05:15,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2910 to 1565. [2020-01-16 18:05:15,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 18:05:15,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7039 transitions. [2020-01-16 18:05:15,927 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7039 transitions. Word has length 28 [2020-01-16 18:05:15,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:15,928 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7039 transitions. [2020-01-16 18:05:15,928 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:15,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7039 transitions. [2020-01-16 18:05:15,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:15,930 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:15,930 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:15,930 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 18:05:15,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:15,930 INFO L82 PathProgramCache]: Analyzing trace with hash -760517902, now seen corresponding path program 175 times [2020-01-16 18:05:15,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:15,931 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731130344] [2020-01-16 18:05:15,931 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:15,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:16,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:16,454 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731130344] [2020-01-16 18:05:16,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:16,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:16,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125604725] [2020-01-16 18:05:16,454 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:16,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:16,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:16,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:16,455 INFO L87 Difference]: Start difference. First operand 1565 states and 7039 transitions. Second operand 11 states. [2020-01-16 18:05:16,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:16,644 INFO L93 Difference]: Finished difference Result 2924 states and 11677 transitions. [2020-01-16 18:05:16,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:16,645 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:16,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:16,652 INFO L225 Difference]: With dead ends: 2924 [2020-01-16 18:05:16,653 INFO L226 Difference]: Without dead ends: 2909 [2020-01-16 18:05:16,653 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:05:16,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2909 states. [2020-01-16 18:05:16,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2909 to 1574. [2020-01-16 18:05:16,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:05:16,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7063 transitions. [2020-01-16 18:05:16,719 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7063 transitions. Word has length 28 [2020-01-16 18:05:16,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:16,719 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7063 transitions. [2020-01-16 18:05:16,720 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:16,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7063 transitions. [2020-01-16 18:05:16,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:16,722 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:16,722 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:16,722 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 18:05:16,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:16,722 INFO L82 PathProgramCache]: Analyzing trace with hash -15815404, now seen corresponding path program 176 times [2020-01-16 18:05:16,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:16,723 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151711521] [2020-01-16 18:05:16,723 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:16,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:17,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:17,246 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151711521] [2020-01-16 18:05:17,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:17,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:17,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375739416] [2020-01-16 18:05:17,246 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:17,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:17,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:17,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:17,247 INFO L87 Difference]: Start difference. First operand 1574 states and 7063 transitions. Second operand 11 states. [2020-01-16 18:05:17,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:17,460 INFO L93 Difference]: Finished difference Result 2925 states and 11674 transitions. [2020-01-16 18:05:17,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:17,460 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:17,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:17,467 INFO L225 Difference]: With dead ends: 2925 [2020-01-16 18:05:17,467 INFO L226 Difference]: Without dead ends: 2904 [2020-01-16 18:05:17,468 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 18:05:17,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2904 states. [2020-01-16 18:05:17,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2904 to 1569. [2020-01-16 18:05:17,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:05:17,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7050 transitions. [2020-01-16 18:05:17,535 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7050 transitions. Word has length 28 [2020-01-16 18:05:17,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:17,535 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7050 transitions. [2020-01-16 18:05:17,536 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:17,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7050 transitions. [2020-01-16 18:05:17,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:17,538 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:17,538 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:17,538 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 18:05:17,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:17,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1295747704, now seen corresponding path program 177 times [2020-01-16 18:05:17,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:17,539 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42679511] [2020-01-16 18:05:17,539 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:17,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:18,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:18,064 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42679511] [2020-01-16 18:05:18,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:18,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:18,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699249042] [2020-01-16 18:05:18,065 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:18,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:18,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:18,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:18,065 INFO L87 Difference]: Start difference. First operand 1569 states and 7050 transitions. Second operand 11 states. [2020-01-16 18:05:18,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:18,251 INFO L93 Difference]: Finished difference Result 2921 states and 11666 transitions. [2020-01-16 18:05:18,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:18,251 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:18,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:18,259 INFO L225 Difference]: With dead ends: 2921 [2020-01-16 18:05:18,259 INFO L226 Difference]: Without dead ends: 2906 [2020-01-16 18:05:18,259 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:05:18,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2906 states. [2020-01-16 18:05:18,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2906 to 1573. [2020-01-16 18:05:18,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:05:18,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7057 transitions. [2020-01-16 18:05:18,325 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7057 transitions. Word has length 28 [2020-01-16 18:05:18,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:18,326 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7057 transitions. [2020-01-16 18:05:18,326 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:18,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7057 transitions. [2020-01-16 18:05:18,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:18,328 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:18,328 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:18,328 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 18:05:18,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:18,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1122500012, now seen corresponding path program 178 times [2020-01-16 18:05:18,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:18,329 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386423900] [2020-01-16 18:05:18,329 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:18,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:18,857 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:05:18,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:18,864 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386423900] [2020-01-16 18:05:18,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:18,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:18,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818801010] [2020-01-16 18:05:18,865 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:18,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:18,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:18,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:18,865 INFO L87 Difference]: Start difference. First operand 1573 states and 7057 transitions. Second operand 11 states. [2020-01-16 18:05:19,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:19,057 INFO L93 Difference]: Finished difference Result 2920 states and 11660 transitions. [2020-01-16 18:05:19,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:19,057 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:19,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:19,065 INFO L225 Difference]: With dead ends: 2920 [2020-01-16 18:05:19,065 INFO L226 Difference]: Without dead ends: 2902 [2020-01-16 18:05:19,065 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 18:05:19,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2902 states. [2020-01-16 18:05:19,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2902 to 1569. [2020-01-16 18:05:19,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:05:19,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7046 transitions. [2020-01-16 18:05:19,134 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7046 transitions. Word has length 28 [2020-01-16 18:05:19,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:19,134 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7046 transitions. [2020-01-16 18:05:19,134 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:19,134 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7046 transitions. [2020-01-16 18:05:19,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:19,136 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:19,136 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 18:05:19,137 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 18:05:19,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:19,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1059895752, now seen corresponding path program 179 times [2020-01-16 18:05:19,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:19,137 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57483743] [2020-01-16 18:05:19,137 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:19,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:19,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:19,671 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57483743] [2020-01-16 18:05:19,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:19,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:19,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342697785] [2020-01-16 18:05:19,672 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:19,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:19,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:19,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:19,672 INFO L87 Difference]: Start difference. First operand 1569 states and 7046 transitions. Second operand 11 states. [2020-01-16 18:05:19,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:19,869 INFO L93 Difference]: Finished difference Result 2923 states and 11666 transitions. [2020-01-16 18:05:19,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:19,870 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:19,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:19,877 INFO L225 Difference]: With dead ends: 2923 [2020-01-16 18:05:19,877 INFO L226 Difference]: Without dead ends: 2907 [2020-01-16 18:05:19,878 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 18:05:19,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2907 states. [2020-01-16 18:05:19,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2907 to 1573. [2020-01-16 18:05:19,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:05:19,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7053 transitions. [2020-01-16 18:05:19,946 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7053 transitions. Word has length 28 [2020-01-16 18:05:19,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:19,946 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7053 transitions. [2020-01-16 18:05:19,946 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:19,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7053 transitions. [2020-01-16 18:05:19,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:19,949 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:19,949 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 18:05:19,949 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 18:05:19,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:19,949 INFO L82 PathProgramCache]: Analyzing trace with hash 488440946, now seen corresponding path program 180 times [2020-01-16 18:05:19,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:19,949 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808924016] [2020-01-16 18:05:19,949 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:19,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:20,472 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 18:05:20,472 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808924016] [2020-01-16 18:05:20,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:20,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:20,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904650754] [2020-01-16 18:05:20,473 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:20,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:20,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:20,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:20,473 INFO L87 Difference]: Start difference. First operand 1573 states and 7053 transitions. Second operand 11 states. [2020-01-16 18:05:20,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:20,661 INFO L93 Difference]: Finished difference Result 2921 states and 11658 transitions. [2020-01-16 18:05:20,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:20,661 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:20,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:20,669 INFO L225 Difference]: With dead ends: 2921 [2020-01-16 18:05:20,670 INFO L226 Difference]: Without dead ends: 2899 [2020-01-16 18:05:20,670 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 18:05:20,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-01-16 18:05:20,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1565. [2020-01-16 18:05:20,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 18:05:20,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7035 transitions. [2020-01-16 18:05:20,738 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7035 transitions. Word has length 28 [2020-01-16 18:05:20,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:20,738 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7035 transitions. [2020-01-16 18:05:20,738 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:20,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7035 transitions. [2020-01-16 18:05:20,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:20,742 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:20,742 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:20,742 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 18:05:20,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:20,742 INFO L82 PathProgramCache]: Analyzing trace with hash -739511694, now seen corresponding path program 181 times [2020-01-16 18:05:20,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:20,743 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197979169] [2020-01-16 18:05:20,743 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:20,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:21,265 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:05:21,272 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 18:05:21,272 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197979169] [2020-01-16 18:05:21,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:21,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:21,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943246407] [2020-01-16 18:05:21,272 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:21,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:21,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:21,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:21,273 INFO L87 Difference]: Start difference. First operand 1565 states and 7035 transitions. Second operand 11 states. [2020-01-16 18:05:21,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:21,457 INFO L93 Difference]: Finished difference Result 2928 states and 11681 transitions. [2020-01-16 18:05:21,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:21,458 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:21,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:21,467 INFO L225 Difference]: With dead ends: 2928 [2020-01-16 18:05:21,467 INFO L226 Difference]: Without dead ends: 2913 [2020-01-16 18:05:21,467 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 18:05:21,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2913 states. [2020-01-16 18:05:21,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2913 to 1574. [2020-01-16 18:05:21,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:05:21,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7059 transitions. [2020-01-16 18:05:21,540 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7059 transitions. Word has length 28 [2020-01-16 18:05:21,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:21,540 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7059 transitions. [2020-01-16 18:05:21,540 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:21,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7059 transitions. [2020-01-16 18:05:21,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:21,543 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:21,543 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:21,543 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 18:05:21,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:21,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1494595800, now seen corresponding path program 182 times [2020-01-16 18:05:21,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:21,543 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123472053] [2020-01-16 18:05:21,544 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:21,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:22,061 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 18:05:22,062 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123472053] [2020-01-16 18:05:22,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:22,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:22,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055074487] [2020-01-16 18:05:22,062 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:22,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:22,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:22,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:22,063 INFO L87 Difference]: Start difference. First operand 1574 states and 7059 transitions. Second operand 11 states. [2020-01-16 18:05:22,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:22,282 INFO L93 Difference]: Finished difference Result 2931 states and 11682 transitions. [2020-01-16 18:05:22,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:22,282 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:22,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:22,290 INFO L225 Difference]: With dead ends: 2931 [2020-01-16 18:05:22,290 INFO L226 Difference]: Without dead ends: 2908 [2020-01-16 18:05:22,290 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 18:05:22,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2020-01-16 18:05:22,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 1569. [2020-01-16 18:05:22,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:05:22,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7046 transitions. [2020-01-16 18:05:22,357 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7046 transitions. Word has length 28 [2020-01-16 18:05:22,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:22,358 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7046 transitions. [2020-01-16 18:05:22,358 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:22,358 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7046 transitions. [2020-01-16 18:05:22,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:22,360 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:22,360 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 18:05:22,360 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 18:05:22,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:22,360 INFO L82 PathProgramCache]: Analyzing trace with hash -201656116, now seen corresponding path program 183 times [2020-01-16 18:05:22,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:22,361 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280362476] [2020-01-16 18:05:22,361 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:22,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:22,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:22,913 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280362476] [2020-01-16 18:05:22,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:22,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:22,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279921788] [2020-01-16 18:05:22,914 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:22,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:22,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:22,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:22,914 INFO L87 Difference]: Start difference. First operand 1569 states and 7046 transitions. Second operand 11 states. [2020-01-16 18:05:23,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:23,107 INFO L93 Difference]: Finished difference Result 2923 states and 11666 transitions. [2020-01-16 18:05:23,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:23,107 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:23,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:23,114 INFO L225 Difference]: With dead ends: 2923 [2020-01-16 18:05:23,114 INFO L226 Difference]: Without dead ends: 2908 [2020-01-16 18:05:23,114 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 18:05:23,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2020-01-16 18:05:23,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 1573. [2020-01-16 18:05:23,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:05:23,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7053 transitions. [2020-01-16 18:05:23,186 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7053 transitions. Word has length 28 [2020-01-16 18:05:23,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:23,186 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7053 transitions. [2020-01-16 18:05:23,186 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:23,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7053 transitions. [2020-01-16 18:05:23,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:23,189 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:23,189 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:23,189 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 18:05:23,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:23,189 INFO L82 PathProgramCache]: Analyzing trace with hash -28408424, now seen corresponding path program 184 times [2020-01-16 18:05:23,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:23,190 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137754408] [2020-01-16 18:05:23,190 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:23,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:23,729 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:05:23,735 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 18:05:23,736 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137754408] [2020-01-16 18:05:23,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:23,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:23,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540592945] [2020-01-16 18:05:23,736 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:23,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:23,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:23,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:23,737 INFO L87 Difference]: Start difference. First operand 1573 states and 7053 transitions. Second operand 11 states. [2020-01-16 18:05:23,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:23,954 INFO L93 Difference]: Finished difference Result 2922 states and 11660 transitions. [2020-01-16 18:05:23,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:23,954 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:23,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:23,962 INFO L225 Difference]: With dead ends: 2922 [2020-01-16 18:05:23,962 INFO L226 Difference]: Without dead ends: 2904 [2020-01-16 18:05:23,962 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 18:05:24,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2904 states. [2020-01-16 18:05:24,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2904 to 1569. [2020-01-16 18:05:24,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:05:24,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7042 transitions. [2020-01-16 18:05:24,030 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7042 transitions. Word has length 28 [2020-01-16 18:05:24,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:24,031 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7042 transitions. [2020-01-16 18:05:24,031 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:24,031 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7042 transitions. [2020-01-16 18:05:24,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:24,034 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:24,034 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 18:05:24,034 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 18:05:24,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:24,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1724660340, now seen corresponding path program 185 times [2020-01-16 18:05:24,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:24,034 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900685858] [2020-01-16 18:05:24,035 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:24,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:24,547 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 18:05:24,547 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900685858] [2020-01-16 18:05:24,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:24,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:24,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681186584] [2020-01-16 18:05:24,548 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:24,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:24,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:24,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:24,548 INFO L87 Difference]: Start difference. First operand 1569 states and 7042 transitions. Second operand 11 states. [2020-01-16 18:05:24,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:24,764 INFO L93 Difference]: Finished difference Result 2929 states and 11674 transitions. [2020-01-16 18:05:24,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:24,765 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:24,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:24,772 INFO L225 Difference]: With dead ends: 2929 [2020-01-16 18:05:24,772 INFO L226 Difference]: Without dead ends: 2911 [2020-01-16 18:05:24,773 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:05:24,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2020-01-16 18:05:24,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 1573. [2020-01-16 18:05:24,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:05:24,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7049 transitions. [2020-01-16 18:05:24,839 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7049 transitions. Word has length 28 [2020-01-16 18:05:24,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:24,839 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7049 transitions. [2020-01-16 18:05:24,840 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:24,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7049 transitions. [2020-01-16 18:05:24,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:24,842 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:24,842 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 18:05:24,842 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 18:05:24,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:24,842 INFO L82 PathProgramCache]: Analyzing trace with hash 509447154, now seen corresponding path program 186 times [2020-01-16 18:05:24,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:24,843 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586004823] [2020-01-16 18:05:24,843 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:24,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:25,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:25,369 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586004823] [2020-01-16 18:05:25,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:25,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:25,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296801756] [2020-01-16 18:05:25,369 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:25,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:25,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:25,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:25,370 INFO L87 Difference]: Start difference. First operand 1573 states and 7049 transitions. Second operand 11 states. [2020-01-16 18:05:25,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:25,618 INFO L93 Difference]: Finished difference Result 2925 states and 11662 transitions. [2020-01-16 18:05:25,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:25,618 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:25,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:25,626 INFO L225 Difference]: With dead ends: 2925 [2020-01-16 18:05:25,626 INFO L226 Difference]: Without dead ends: 2903 [2020-01-16 18:05:25,626 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 18:05:25,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2903 states. [2020-01-16 18:05:25,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2903 to 1565. [2020-01-16 18:05:25,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 18:05:25,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7031 transitions. [2020-01-16 18:05:25,693 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7031 transitions. Word has length 28 [2020-01-16 18:05:25,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:25,693 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7031 transitions. [2020-01-16 18:05:25,693 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:25,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7031 transitions. [2020-01-16 18:05:25,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:25,695 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:25,695 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:25,696 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 18:05:25,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:25,696 INFO L82 PathProgramCache]: Analyzing trace with hash 15693908, now seen corresponding path program 187 times [2020-01-16 18:05:25,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:25,696 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758033212] [2020-01-16 18:05:25,696 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:25,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:26,225 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 18:05:26,225 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758033212] [2020-01-16 18:05:26,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:26,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:26,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094946675] [2020-01-16 18:05:26,226 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:26,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:26,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:26,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:26,226 INFO L87 Difference]: Start difference. First operand 1565 states and 7031 transitions. Second operand 11 states. [2020-01-16 18:05:26,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:26,412 INFO L93 Difference]: Finished difference Result 2933 states and 11689 transitions. [2020-01-16 18:05:26,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:26,412 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:26,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:26,420 INFO L225 Difference]: With dead ends: 2933 [2020-01-16 18:05:26,420 INFO L226 Difference]: Without dead ends: 2917 [2020-01-16 18:05:26,420 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 18:05:26,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2917 states. [2020-01-16 18:05:26,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2917 to 1575. [2020-01-16 18:05:26,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:05:26,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7057 transitions. [2020-01-16 18:05:26,487 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7057 transitions. Word has length 28 [2020-01-16 18:05:26,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:26,487 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7057 transitions. [2020-01-16 18:05:26,487 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:26,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7057 transitions. [2020-01-16 18:05:26,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:26,489 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:26,490 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 18:05:26,490 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 18:05:26,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:26,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1505098904, now seen corresponding path program 188 times [2020-01-16 18:05:26,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:26,490 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924785565] [2020-01-16 18:05:26,490 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:26,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:27,008 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:05:27,015 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 18:05:27,015 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924785565] [2020-01-16 18:05:27,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:27,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:27,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960289540] [2020-01-16 18:05:27,015 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:27,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:27,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:27,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:27,016 INFO L87 Difference]: Start difference. First operand 1575 states and 7057 transitions. Second operand 11 states. [2020-01-16 18:05:27,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:27,204 INFO L93 Difference]: Finished difference Result 2935 states and 11687 transitions. [2020-01-16 18:05:27,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:27,204 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:27,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:27,212 INFO L225 Difference]: With dead ends: 2935 [2020-01-16 18:05:27,212 INFO L226 Difference]: Without dead ends: 2911 [2020-01-16 18:05:27,212 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 18:05:27,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2020-01-16 18:05:27,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 1569. [2020-01-16 18:05:27,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:05:27,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7042 transitions. [2020-01-16 18:05:27,278 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7042 transitions. Word has length 28 [2020-01-16 18:05:27,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:27,279 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7042 transitions. [2020-01-16 18:05:27,279 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:27,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7042 transitions. [2020-01-16 18:05:27,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:27,281 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:27,281 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 18:05:27,281 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 18:05:27,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:27,281 INFO L82 PathProgramCache]: Analyzing trace with hash 553549486, now seen corresponding path program 189 times [2020-01-16 18:05:27,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:27,281 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520499050] [2020-01-16 18:05:27,282 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:27,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:27,830 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:05:27,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:27,837 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520499050] [2020-01-16 18:05:27,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:27,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:27,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937234059] [2020-01-16 18:05:27,838 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:27,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:27,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:27,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:27,838 INFO L87 Difference]: Start difference. First operand 1569 states and 7042 transitions. Second operand 11 states. [2020-01-16 18:05:28,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:28,044 INFO L93 Difference]: Finished difference Result 2927 states and 11671 transitions. [2020-01-16 18:05:28,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:28,045 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:28,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:28,051 INFO L225 Difference]: With dead ends: 2927 [2020-01-16 18:05:28,052 INFO L226 Difference]: Without dead ends: 2911 [2020-01-16 18:05:28,052 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 18:05:28,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2020-01-16 18:05:28,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 1573. [2020-01-16 18:05:28,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:05:28,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7049 transitions. [2020-01-16 18:05:28,118 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7049 transitions. Word has length 28 [2020-01-16 18:05:28,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:28,119 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7049 transitions. [2020-01-16 18:05:28,119 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:28,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7049 transitions. [2020-01-16 18:05:28,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:28,121 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:28,121 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 18:05:28,121 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 18:05:28,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:28,121 INFO L82 PathProgramCache]: Analyzing trace with hash -17905320, now seen corresponding path program 190 times [2020-01-16 18:05:28,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:28,122 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159241751] [2020-01-16 18:05:28,122 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:28,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:28,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:28,629 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159241751] [2020-01-16 18:05:28,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:28,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:28,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275536699] [2020-01-16 18:05:28,630 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:28,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:28,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:28,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:28,630 INFO L87 Difference]: Start difference. First operand 1573 states and 7049 transitions. Second operand 11 states. [2020-01-16 18:05:28,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:28,875 INFO L93 Difference]: Finished difference Result 2925 states and 11663 transitions. [2020-01-16 18:05:28,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:28,875 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:28,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:28,882 INFO L225 Difference]: With dead ends: 2925 [2020-01-16 18:05:28,882 INFO L226 Difference]: Without dead ends: 2907 [2020-01-16 18:05:28,882 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 18:05:28,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2907 states. [2020-01-16 18:05:28,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2907 to 1569. [2020-01-16 18:05:28,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:05:28,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7038 transitions. [2020-01-16 18:05:28,949 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7038 transitions. Word has length 28 [2020-01-16 18:05:28,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:28,949 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7038 transitions. [2020-01-16 18:05:28,949 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:28,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7038 transitions. [2020-01-16 18:05:28,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:28,951 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:28,951 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 18:05:28,952 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 18:05:28,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:28,952 INFO L82 PathProgramCache]: Analyzing trace with hash 969869102, now seen corresponding path program 191 times [2020-01-16 18:05:28,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:28,952 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024554560] [2020-01-16 18:05:28,952 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:28,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:29,460 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 18:05:29,460 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024554560] [2020-01-16 18:05:29,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:29,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:29,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563412789] [2020-01-16 18:05:29,461 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:29,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:29,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:29,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:29,461 INFO L87 Difference]: Start difference. First operand 1569 states and 7038 transitions. Second operand 11 states. [2020-01-16 18:05:29,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:29,705 INFO L93 Difference]: Finished difference Result 2931 states and 11675 transitions. [2020-01-16 18:05:29,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:29,705 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:29,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:29,712 INFO L225 Difference]: With dead ends: 2931 [2020-01-16 18:05:29,712 INFO L226 Difference]: Without dead ends: 2913 [2020-01-16 18:05:29,712 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:05:29,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2913 states. [2020-01-16 18:05:29,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2913 to 1573. [2020-01-16 18:05:29,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:05:29,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7045 transitions. [2020-01-16 18:05:29,779 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7045 transitions. Word has length 28 [2020-01-16 18:05:29,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:29,779 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7045 transitions. [2020-01-16 18:05:29,779 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:29,779 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7045 transitions. [2020-01-16 18:05:29,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:29,782 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:29,782 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 18:05:29,782 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 18:05:29,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:29,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1090990700, now seen corresponding path program 192 times [2020-01-16 18:05:29,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:29,782 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307741647] [2020-01-16 18:05:29,782 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:29,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:30,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:30,311 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307741647] [2020-01-16 18:05:30,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:30,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:30,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952379970] [2020-01-16 18:05:30,311 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:30,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:30,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:30,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:30,312 INFO L87 Difference]: Start difference. First operand 1573 states and 7045 transitions. Second operand 11 states. [2020-01-16 18:05:30,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:30,501 INFO L93 Difference]: Finished difference Result 2927 states and 11663 transitions. [2020-01-16 18:05:30,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:30,501 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:30,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:30,508 INFO L225 Difference]: With dead ends: 2927 [2020-01-16 18:05:30,508 INFO L226 Difference]: Without dead ends: 2901 [2020-01-16 18:05:30,508 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 18:05:30,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2901 states. [2020-01-16 18:05:30,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2901 to 1561. [2020-01-16 18:05:30,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1561 states. [2020-01-16 18:05:30,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1561 states to 1561 states and 7020 transitions. [2020-01-16 18:05:30,575 INFO L78 Accepts]: Start accepts. Automaton has 1561 states and 7020 transitions. Word has length 28 [2020-01-16 18:05:30,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:30,575 INFO L478 AbstractCegarLoop]: Abstraction has 1561 states and 7020 transitions. [2020-01-16 18:05:30,575 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:30,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1561 states and 7020 transitions. [2020-01-16 18:05:30,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:30,577 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:30,577 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:30,577 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 18:05:30,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:30,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1682365546, now seen corresponding path program 193 times [2020-01-16 18:05:30,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:30,578 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765530625] [2020-01-16 18:05:30,578 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:30,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:31,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:31,104 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765530625] [2020-01-16 18:05:31,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:31,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:31,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489805086] [2020-01-16 18:05:31,105 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:31,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:31,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:31,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:31,105 INFO L87 Difference]: Start difference. First operand 1561 states and 7020 transitions. Second operand 11 states. [2020-01-16 18:05:31,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:31,292 INFO L93 Difference]: Finished difference Result 2965 states and 11770 transitions. [2020-01-16 18:05:31,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:31,292 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:31,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:31,300 INFO L225 Difference]: With dead ends: 2965 [2020-01-16 18:05:31,300 INFO L226 Difference]: Without dead ends: 2950 [2020-01-16 18:05:31,301 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 18:05:31,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2020-01-16 18:05:31,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 1580. [2020-01-16 18:05:31,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:05:31,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7081 transitions. [2020-01-16 18:05:31,367 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7081 transitions. Word has length 28 [2020-01-16 18:05:31,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:31,367 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7081 transitions. [2020-01-16 18:05:31,367 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:31,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7081 transitions. [2020-01-16 18:05:31,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:31,370 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:31,370 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 18:05:31,370 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 18:05:31,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:31,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1123196754, now seen corresponding path program 194 times [2020-01-16 18:05:31,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:31,370 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058116615] [2020-01-16 18:05:31,370 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:31,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:31,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:31,896 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058116615] [2020-01-16 18:05:31,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:31,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:31,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521014800] [2020-01-16 18:05:31,897 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:31,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:31,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:31,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:31,897 INFO L87 Difference]: Start difference. First operand 1580 states and 7081 transitions. Second operand 11 states. [2020-01-16 18:05:32,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:32,063 INFO L93 Difference]: Finished difference Result 2970 states and 11774 transitions. [2020-01-16 18:05:32,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:32,063 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:32,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:32,070 INFO L225 Difference]: With dead ends: 2970 [2020-01-16 18:05:32,070 INFO L226 Difference]: Without dead ends: 2944 [2020-01-16 18:05:32,070 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 18:05:32,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2944 states. [2020-01-16 18:05:32,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2944 to 1574. [2020-01-16 18:05:32,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:05:32,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7064 transitions. [2020-01-16 18:05:32,137 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7064 transitions. Word has length 28 [2020-01-16 18:05:32,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:32,137 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7064 transitions. [2020-01-16 18:05:32,137 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:32,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7064 transitions. [2020-01-16 18:05:32,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:32,140 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:32,140 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 18:05:32,140 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 18:05:32,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:32,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1001660792, now seen corresponding path program 195 times [2020-01-16 18:05:32,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:32,140 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420919647] [2020-01-16 18:05:32,140 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:32,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:32,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:32,671 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420919647] [2020-01-16 18:05:32,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:32,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:32,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855610989] [2020-01-16 18:05:32,672 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:32,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:32,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:32,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:32,672 INFO L87 Difference]: Start difference. First operand 1574 states and 7064 transitions. Second operand 11 states. [2020-01-16 18:05:32,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:32,902 INFO L93 Difference]: Finished difference Result 2962 states and 11759 transitions. [2020-01-16 18:05:32,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:32,902 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:32,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:32,910 INFO L225 Difference]: With dead ends: 2962 [2020-01-16 18:05:32,910 INFO L226 Difference]: Without dead ends: 2947 [2020-01-16 18:05:32,911 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 18:05:32,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2947 states. [2020-01-16 18:05:32,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2947 to 1579. [2020-01-16 18:05:32,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:05:32,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7073 transitions. [2020-01-16 18:05:32,996 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7073 transitions. Word has length 28 [2020-01-16 18:05:32,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:32,996 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7073 transitions. [2020-01-16 18:05:32,997 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:32,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7073 transitions. [2020-01-16 18:05:32,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:32,999 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:32,999 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 18:05:32,999 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 18:05:32,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:32,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1232446702, now seen corresponding path program 196 times [2020-01-16 18:05:33,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:33,000 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965119027] [2020-01-16 18:05:33,000 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:33,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:33,520 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 18:05:33,520 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965119027] [2020-01-16 18:05:33,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:33,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:33,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886399837] [2020-01-16 18:05:33,521 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:33,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:33,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:33,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:33,521 INFO L87 Difference]: Start difference. First operand 1579 states and 7073 transitions. Second operand 11 states. [2020-01-16 18:05:33,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:33,700 INFO L93 Difference]: Finished difference Result 2965 states and 11760 transitions. [2020-01-16 18:05:33,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:33,700 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:33,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:33,707 INFO L225 Difference]: With dead ends: 2965 [2020-01-16 18:05:33,707 INFO L226 Difference]: Without dead ends: 2942 [2020-01-16 18:05:33,707 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 18:05:33,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2020-01-16 18:05:33,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 1574. [2020-01-16 18:05:33,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:05:33,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7059 transitions. [2020-01-16 18:05:33,776 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7059 transitions. Word has length 28 [2020-01-16 18:05:33,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:33,776 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7059 transitions. [2020-01-16 18:05:33,776 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:33,776 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7059 transitions. [2020-01-16 18:05:33,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:33,778 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:33,779 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:33,779 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 18:05:33,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:33,779 INFO L82 PathProgramCache]: Analyzing trace with hash -585341176, now seen corresponding path program 197 times [2020-01-16 18:05:33,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:33,779 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369602250] [2020-01-16 18:05:33,780 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:33,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:34,315 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 18:05:34,315 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369602250] [2020-01-16 18:05:34,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:34,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:34,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928685914] [2020-01-16 18:05:34,316 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:34,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:34,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:34,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:34,316 INFO L87 Difference]: Start difference. First operand 1574 states and 7059 transitions. Second operand 11 states. [2020-01-16 18:05:34,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:34,461 INFO L93 Difference]: Finished difference Result 2977 states and 11784 transitions. [2020-01-16 18:05:34,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:34,462 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:34,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:34,469 INFO L225 Difference]: With dead ends: 2977 [2020-01-16 18:05:34,469 INFO L226 Difference]: Without dead ends: 2957 [2020-01-16 18:05:34,469 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:05:34,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2957 states. [2020-01-16 18:05:34,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2957 to 1584. [2020-01-16 18:05:34,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1584 states. [2020-01-16 18:05:34,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 7076 transitions. [2020-01-16 18:05:34,540 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 7076 transitions. Word has length 28 [2020-01-16 18:05:34,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:34,540 INFO L478 AbstractCegarLoop]: Abstraction has 1584 states and 7076 transitions. [2020-01-16 18:05:34,540 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:34,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 7076 transitions. [2020-01-16 18:05:34,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:34,543 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:34,543 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:34,543 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 18:05:34,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:34,543 INFO L82 PathProgramCache]: Analyzing trace with hash 159361322, now seen corresponding path program 198 times [2020-01-16 18:05:34,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:34,543 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63497175] [2020-01-16 18:05:34,543 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:34,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:35,074 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 18:05:35,074 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63497175] [2020-01-16 18:05:35,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:35,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:35,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899328889] [2020-01-16 18:05:35,075 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:35,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:35,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:35,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:35,076 INFO L87 Difference]: Start difference. First operand 1584 states and 7076 transitions. Second operand 11 states. [2020-01-16 18:05:35,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:35,283 INFO L93 Difference]: Finished difference Result 2975 states and 11772 transitions. [2020-01-16 18:05:35,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:35,284 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:35,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:35,291 INFO L225 Difference]: With dead ends: 2975 [2020-01-16 18:05:35,291 INFO L226 Difference]: Without dead ends: 2940 [2020-01-16 18:05:35,291 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 18:05:35,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2940 states. [2020-01-16 18:05:35,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2940 to 1567. [2020-01-16 18:05:35,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:05:35,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7040 transitions. [2020-01-16 18:05:35,359 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7040 transitions. Word has length 28 [2020-01-16 18:05:35,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:35,359 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7040 transitions. [2020-01-16 18:05:35,359 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:35,360 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7040 transitions. [2020-01-16 18:05:35,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:35,362 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:35,362 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:35,362 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 18:05:35,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:35,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1176019280, now seen corresponding path program 199 times [2020-01-16 18:05:35,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:35,362 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057467182] [2020-01-16 18:05:35,363 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:35,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:35,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:35,879 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057467182] [2020-01-16 18:05:35,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:35,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:35,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905099627] [2020-01-16 18:05:35,880 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:35,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:35,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:35,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:35,880 INFO L87 Difference]: Start difference. First operand 1567 states and 7040 transitions. Second operand 11 states. [2020-01-16 18:05:36,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:36,081 INFO L93 Difference]: Finished difference Result 2953 states and 11734 transitions. [2020-01-16 18:05:36,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:36,082 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:36,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:36,089 INFO L225 Difference]: With dead ends: 2953 [2020-01-16 18:05:36,089 INFO L226 Difference]: Without dead ends: 2938 [2020-01-16 18:05:36,090 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 18:05:36,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2020-01-16 18:05:36,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 1578. [2020-01-16 18:05:36,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:05:36,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7069 transitions. [2020-01-16 18:05:36,156 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7069 transitions. Word has length 28 [2020-01-16 18:05:36,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:36,157 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7069 transitions. [2020-01-16 18:05:36,157 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:36,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7069 transitions. [2020-01-16 18:05:36,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:36,159 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:36,159 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:36,159 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 18:05:36,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:36,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1629543020, now seen corresponding path program 200 times [2020-01-16 18:05:36,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:36,160 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086884400] [2020-01-16 18:05:36,160 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:36,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:36,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:36,682 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086884400] [2020-01-16 18:05:36,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:36,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:36,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705285518] [2020-01-16 18:05:36,682 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:36,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:36,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:36,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:36,683 INFO L87 Difference]: Start difference. First operand 1578 states and 7069 transitions. Second operand 11 states. [2020-01-16 18:05:36,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:36,829 INFO L93 Difference]: Finished difference Result 2958 states and 11738 transitions. [2020-01-16 18:05:36,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:36,829 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:36,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:36,837 INFO L225 Difference]: With dead ends: 2958 [2020-01-16 18:05:36,837 INFO L226 Difference]: Without dead ends: 2932 [2020-01-16 18:05:36,837 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 18:05:36,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2932 states. [2020-01-16 18:05:36,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2932 to 1572. [2020-01-16 18:05:36,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:05:36,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7053 transitions. [2020-01-16 18:05:36,904 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7053 transitions. Word has length 28 [2020-01-16 18:05:36,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:36,904 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7053 transitions. [2020-01-16 18:05:36,904 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:36,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7053 transitions. [2020-01-16 18:05:36,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:36,907 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:36,907 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 18:05:36,907 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 18:05:36,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:36,907 INFO L82 PathProgramCache]: Analyzing trace with hash -970151480, now seen corresponding path program 201 times [2020-01-16 18:05:36,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:36,907 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487479673] [2020-01-16 18:05:36,907 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:36,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:37,436 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 18:05:37,437 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487479673] [2020-01-16 18:05:37,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:37,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:37,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654013062] [2020-01-16 18:05:37,437 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:37,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:37,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:37,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:37,438 INFO L87 Difference]: Start difference. First operand 1572 states and 7053 transitions. Second operand 11 states. [2020-01-16 18:05:37,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:37,651 INFO L93 Difference]: Finished difference Result 2945 states and 11713 transitions. [2020-01-16 18:05:37,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:37,651 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:37,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:37,659 INFO L225 Difference]: With dead ends: 2945 [2020-01-16 18:05:37,659 INFO L226 Difference]: Without dead ends: 2930 [2020-01-16 18:05:37,659 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:05:37,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2020-01-16 18:05:37,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1576. [2020-01-16 18:05:37,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:05:37,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7060 transitions. [2020-01-16 18:05:37,726 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7060 transitions. Word has length 28 [2020-01-16 18:05:37,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:37,726 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7060 transitions. [2020-01-16 18:05:37,726 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:37,726 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7060 transitions. [2020-01-16 18:05:37,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:37,728 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:37,729 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:37,729 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 18:05:37,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:37,729 INFO L82 PathProgramCache]: Analyzing trace with hash -796903788, now seen corresponding path program 202 times [2020-01-16 18:05:37,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:37,729 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014024795] [2020-01-16 18:05:37,729 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:37,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:38,284 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 18:05:38,285 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014024795] [2020-01-16 18:05:38,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:38,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:38,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839968057] [2020-01-16 18:05:38,285 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:38,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:38,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:38,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:38,286 INFO L87 Difference]: Start difference. First operand 1576 states and 7060 transitions. Second operand 11 states. [2020-01-16 18:05:38,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:38,478 INFO L93 Difference]: Finished difference Result 2944 states and 11707 transitions. [2020-01-16 18:05:38,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:38,478 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:38,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:38,485 INFO L225 Difference]: With dead ends: 2944 [2020-01-16 18:05:38,485 INFO L226 Difference]: Without dead ends: 2926 [2020-01-16 18:05:38,485 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 18:05:38,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2020-01-16 18:05:38,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 1572. [2020-01-16 18:05:38,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:05:38,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7049 transitions. [2020-01-16 18:05:38,559 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7049 transitions. Word has length 28 [2020-01-16 18:05:38,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:38,559 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7049 transitions. [2020-01-16 18:05:38,559 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:38,559 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7049 transitions. [2020-01-16 18:05:38,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:38,562 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:38,562 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 18:05:38,562 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 18:05:38,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:38,562 INFO L82 PathProgramCache]: Analyzing trace with hash -553831864, now seen corresponding path program 203 times [2020-01-16 18:05:38,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:38,562 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701598405] [2020-01-16 18:05:38,562 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:38,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:39,086 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 18:05:39,086 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701598405] [2020-01-16 18:05:39,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:39,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:39,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063590198] [2020-01-16 18:05:39,086 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:39,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:39,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:39,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:39,087 INFO L87 Difference]: Start difference. First operand 1572 states and 7049 transitions. Second operand 11 states. [2020-01-16 18:05:39,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:39,257 INFO L93 Difference]: Finished difference Result 2956 states and 11729 transitions. [2020-01-16 18:05:39,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:39,258 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:39,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:39,265 INFO L225 Difference]: With dead ends: 2956 [2020-01-16 18:05:39,265 INFO L226 Difference]: Without dead ends: 2936 [2020-01-16 18:05:39,266 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 18:05:39,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2936 states. [2020-01-16 18:05:39,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2936 to 1577. [2020-01-16 18:05:39,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:05:39,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7057 transitions. [2020-01-16 18:05:39,332 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7057 transitions. Word has length 28 [2020-01-16 18:05:39,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:39,332 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7057 transitions. [2020-01-16 18:05:39,332 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:39,332 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7057 transitions. [2020-01-16 18:05:39,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:39,335 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:39,335 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 18:05:39,335 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 18:05:39,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:39,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1869989168, now seen corresponding path program 204 times [2020-01-16 18:05:39,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:39,335 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302403838] [2020-01-16 18:05:39,335 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:39,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:39,849 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 18:05:39,849 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302403838] [2020-01-16 18:05:39,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:39,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:39,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726413985] [2020-01-16 18:05:39,850 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:39,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:39,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:39,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:39,851 INFO L87 Difference]: Start difference. First operand 1577 states and 7057 transitions. Second operand 11 states. [2020-01-16 18:05:40,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:40,040 INFO L93 Difference]: Finished difference Result 2950 states and 11713 transitions. [2020-01-16 18:05:40,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:40,040 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:40,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:40,048 INFO L225 Difference]: With dead ends: 2950 [2020-01-16 18:05:40,048 INFO L226 Difference]: Without dead ends: 2926 [2020-01-16 18:05:40,048 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 18:05:40,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2020-01-16 18:05:40,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 1567. [2020-01-16 18:05:40,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:05:40,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7035 transitions. [2020-01-16 18:05:40,117 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7035 transitions. Word has length 28 [2020-01-16 18:05:40,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:40,117 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7035 transitions. [2020-01-16 18:05:40,117 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:40,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7035 transitions. [2020-01-16 18:05:40,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:40,120 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:40,120 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 18:05:40,120 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 18:05:40,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:40,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1186522384, now seen corresponding path program 205 times [2020-01-16 18:05:40,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:40,120 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999302016] [2020-01-16 18:05:40,120 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:40,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:40,640 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 18:05:40,641 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999302016] [2020-01-16 18:05:40,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:40,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:40,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830836834] [2020-01-16 18:05:40,641 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:40,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:40,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:40,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:40,642 INFO L87 Difference]: Start difference. First operand 1567 states and 7035 transitions. Second operand 11 states. [2020-01-16 18:05:40,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:40,835 INFO L93 Difference]: Finished difference Result 2945 states and 11714 transitions. [2020-01-16 18:05:40,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:40,836 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:40,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:40,843 INFO L225 Difference]: With dead ends: 2945 [2020-01-16 18:05:40,844 INFO L226 Difference]: Without dead ends: 2930 [2020-01-16 18:05:40,844 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:05:40,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2020-01-16 18:05:40,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1576. [2020-01-16 18:05:40,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:05:40,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7059 transitions. [2020-01-16 18:05:40,920 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7059 transitions. Word has length 28 [2020-01-16 18:05:40,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:40,920 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7059 transitions. [2020-01-16 18:05:40,920 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:40,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7059 transitions. [2020-01-16 18:05:40,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:40,922 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:40,923 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 18:05:40,923 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 18:05:40,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:40,923 INFO L82 PathProgramCache]: Analyzing trace with hash -874337418, now seen corresponding path program 206 times [2020-01-16 18:05:40,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:40,923 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565370673] [2020-01-16 18:05:40,923 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:40,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:41,442 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 18:05:41,443 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565370673] [2020-01-16 18:05:41,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:41,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:41,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821354377] [2020-01-16 18:05:41,443 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:41,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:41,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:41,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:41,444 INFO L87 Difference]: Start difference. First operand 1576 states and 7059 transitions. Second operand 11 states. [2020-01-16 18:05:41,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:41,633 INFO L93 Difference]: Finished difference Result 2948 states and 11715 transitions. [2020-01-16 18:05:41,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:41,634 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:41,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:41,641 INFO L225 Difference]: With dead ends: 2948 [2020-01-16 18:05:41,641 INFO L226 Difference]: Without dead ends: 2925 [2020-01-16 18:05:41,642 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 18:05:41,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2925 states. [2020-01-16 18:05:41,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2925 to 1571. [2020-01-16 18:05:41,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:05:41,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7046 transitions. [2020-01-16 18:05:41,708 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7046 transitions. Word has length 28 [2020-01-16 18:05:41,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:41,708 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7046 transitions. [2020-01-16 18:05:41,708 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:41,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7046 transitions. [2020-01-16 18:05:41,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:41,711 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:41,711 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:41,711 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 18:05:41,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:41,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1724377962, now seen corresponding path program 207 times [2020-01-16 18:05:41,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:41,711 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369834433] [2020-01-16 18:05:41,711 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:41,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:42,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:42,235 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369834433] [2020-01-16 18:05:42,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:42,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:42,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774230464] [2020-01-16 18:05:42,235 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:42,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:42,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:42,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:42,236 INFO L87 Difference]: Start difference. First operand 1571 states and 7046 transitions. Second operand 11 states. [2020-01-16 18:05:42,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:42,496 INFO L93 Difference]: Finished difference Result 2940 states and 11699 transitions. [2020-01-16 18:05:42,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:42,497 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:42,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:42,504 INFO L225 Difference]: With dead ends: 2940 [2020-01-16 18:05:42,504 INFO L226 Difference]: Without dead ends: 2925 [2020-01-16 18:05:42,504 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 18:05:42,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2925 states. [2020-01-16 18:05:42,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2925 to 1575. [2020-01-16 18:05:42,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:05:42,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7053 transitions. [2020-01-16 18:05:42,571 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7053 transitions. Word has length 28 [2020-01-16 18:05:42,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:42,571 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7053 transitions. [2020-01-16 18:05:42,571 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:42,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7053 transitions. [2020-01-16 18:05:42,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:42,573 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:42,573 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:42,573 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 18:05:42,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:42,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1897625654, now seen corresponding path program 208 times [2020-01-16 18:05:42,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:42,574 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672018580] [2020-01-16 18:05:42,574 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:42,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:43,098 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:05:43,105 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 18:05:43,105 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672018580] [2020-01-16 18:05:43,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:43,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:43,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323039942] [2020-01-16 18:05:43,106 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:43,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:43,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:43,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:43,106 INFO L87 Difference]: Start difference. First operand 1575 states and 7053 transitions. Second operand 11 states. [2020-01-16 18:05:43,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:43,337 INFO L93 Difference]: Finished difference Result 2939 states and 11693 transitions. [2020-01-16 18:05:43,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:43,342 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:43,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:43,350 INFO L225 Difference]: With dead ends: 2939 [2020-01-16 18:05:43,350 INFO L226 Difference]: Without dead ends: 2921 [2020-01-16 18:05:43,350 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 18:05:43,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2020-01-16 18:05:43,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 1571. [2020-01-16 18:05:43,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:05:43,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7042 transitions. [2020-01-16 18:05:43,427 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7042 transitions. Word has length 28 [2020-01-16 18:05:43,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:43,427 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7042 transitions. [2020-01-16 18:05:43,427 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:43,427 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7042 transitions. [2020-01-16 18:05:43,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:43,430 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:43,430 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 18:05:43,430 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 18:05:43,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:43,430 INFO L82 PathProgramCache]: Analyzing trace with hash 201373738, now seen corresponding path program 209 times [2020-01-16 18:05:43,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:43,430 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360257396] [2020-01-16 18:05:43,430 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:43,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:43,941 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:05:43,948 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 18:05:43,949 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360257396] [2020-01-16 18:05:43,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:43,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:43,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478638624] [2020-01-16 18:05:43,949 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:43,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:43,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:43,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:43,950 INFO L87 Difference]: Start difference. First operand 1571 states and 7042 transitions. Second operand 11 states. [2020-01-16 18:05:44,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:44,209 INFO L93 Difference]: Finished difference Result 2946 states and 11707 transitions. [2020-01-16 18:05:44,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:44,210 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:44,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:44,218 INFO L225 Difference]: With dead ends: 2946 [2020-01-16 18:05:44,218 INFO L226 Difference]: Without dead ends: 2928 [2020-01-16 18:05:44,218 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 18:05:44,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2020-01-16 18:05:44,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 1575. [2020-01-16 18:05:44,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:05:44,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7049 transitions. [2020-01-16 18:05:44,285 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7049 transitions. Word has length 28 [2020-01-16 18:05:44,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:44,285 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7049 transitions. [2020-01-16 18:05:44,285 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:44,285 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7049 transitions. [2020-01-16 18:05:44,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:44,287 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:44,287 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 18:05:44,287 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 18:05:44,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:44,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1859486064, now seen corresponding path program 210 times [2020-01-16 18:05:44,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:44,288 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210654018] [2020-01-16 18:05:44,288 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:44,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:44,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:44,795 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210654018] [2020-01-16 18:05:44,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:44,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:44,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809610722] [2020-01-16 18:05:44,795 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:44,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:44,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:44,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:44,796 INFO L87 Difference]: Start difference. First operand 1575 states and 7049 transitions. Second operand 11 states. [2020-01-16 18:05:45,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:45,066 INFO L93 Difference]: Finished difference Result 2942 states and 11695 transitions. [2020-01-16 18:05:45,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:45,067 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:45,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:45,074 INFO L225 Difference]: With dead ends: 2942 [2020-01-16 18:05:45,074 INFO L226 Difference]: Without dead ends: 2920 [2020-01-16 18:05:45,074 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:05:45,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2920 states. [2020-01-16 18:05:45,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2920 to 1567. [2020-01-16 18:05:45,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:05:45,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7031 transitions. [2020-01-16 18:05:45,142 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7031 transitions. Word has length 28 [2020-01-16 18:05:45,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:45,143 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7031 transitions. [2020-01-16 18:05:45,143 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:45,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7031 transitions. [2020-01-16 18:05:45,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:45,145 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:45,145 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:45,145 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 18:05:45,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:45,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1598033708, now seen corresponding path program 211 times [2020-01-16 18:05:45,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:45,146 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235599296] [2020-01-16 18:05:45,146 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:45,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:45,684 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 18:05:45,685 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235599296] [2020-01-16 18:05:45,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:45,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:45,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457708951] [2020-01-16 18:05:45,685 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:45,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:45,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:45,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:45,686 INFO L87 Difference]: Start difference. First operand 1567 states and 7031 transitions. Second operand 11 states. [2020-01-16 18:05:45,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:45,866 INFO L93 Difference]: Finished difference Result 2973 states and 11768 transitions. [2020-01-16 18:05:45,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:45,866 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:45,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:45,874 INFO L225 Difference]: With dead ends: 2973 [2020-01-16 18:05:45,874 INFO L226 Difference]: Without dead ends: 2953 [2020-01-16 18:05:45,874 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 18:05:45,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2953 states. [2020-01-16 18:05:45,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2953 to 1583. [2020-01-16 18:05:45,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:05:45,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7068 transitions. [2020-01-16 18:05:45,943 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7068 transitions. Word has length 28 [2020-01-16 18:05:45,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:45,943 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7068 transitions. [2020-01-16 18:05:45,943 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:45,943 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7068 transitions. [2020-01-16 18:05:45,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:45,946 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:45,946 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:45,946 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 18:05:45,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:45,946 INFO L82 PathProgramCache]: Analyzing trace with hash -853331210, now seen corresponding path program 212 times [2020-01-16 18:05:45,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:45,946 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425039236] [2020-01-16 18:05:45,946 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:45,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:46,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:46,479 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425039236] [2020-01-16 18:05:46,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:46,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:46,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193177247] [2020-01-16 18:05:46,480 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:46,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:46,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:46,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:46,480 INFO L87 Difference]: Start difference. First operand 1583 states and 7068 transitions. Second operand 11 states. [2020-01-16 18:05:46,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:46,747 INFO L93 Difference]: Finished difference Result 2971 states and 11756 transitions. [2020-01-16 18:05:46,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:46,747 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:46,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:46,754 INFO L225 Difference]: With dead ends: 2971 [2020-01-16 18:05:46,754 INFO L226 Difference]: Without dead ends: 2943 [2020-01-16 18:05:46,755 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:05:46,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2943 states. [2020-01-16 18:05:46,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2943 to 1573. [2020-01-16 18:05:46,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:05:46,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7045 transitions. [2020-01-16 18:05:46,821 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7045 transitions. Word has length 28 [2020-01-16 18:05:46,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:46,821 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7045 transitions. [2020-01-16 18:05:46,821 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:46,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7045 transitions. [2020-01-16 18:05:46,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:46,824 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:46,824 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:46,824 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 18:05:46,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:46,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1060178130, now seen corresponding path program 213 times [2020-01-16 18:05:46,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:46,824 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319297828] [2020-01-16 18:05:46,824 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:46,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:47,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:47,346 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319297828] [2020-01-16 18:05:47,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:47,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:47,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130704231] [2020-01-16 18:05:47,346 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:47,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:47,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:47,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:47,347 INFO L87 Difference]: Start difference. First operand 1573 states and 7045 transitions. Second operand 11 states. [2020-01-16 18:05:47,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:47,578 INFO L93 Difference]: Finished difference Result 2964 states and 11741 transitions. [2020-01-16 18:05:47,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:47,579 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:47,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:47,586 INFO L225 Difference]: With dead ends: 2964 [2020-01-16 18:05:47,586 INFO L226 Difference]: Without dead ends: 2944 [2020-01-16 18:05:47,587 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:05:47,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2944 states. [2020-01-16 18:05:47,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2944 to 1578. [2020-01-16 18:05:47,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:05:47,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7053 transitions. [2020-01-16 18:05:47,653 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7053 transitions. Word has length 28 [2020-01-16 18:05:47,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:47,653 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7053 transitions. [2020-01-16 18:05:47,653 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:47,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7053 transitions. [2020-01-16 18:05:47,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:47,655 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:47,655 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:47,656 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 18:05:47,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:47,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1918631862, now seen corresponding path program 214 times [2020-01-16 18:05:47,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:47,656 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116746641] [2020-01-16 18:05:47,656 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:47,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:48,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:48,169 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116746641] [2020-01-16 18:05:48,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:48,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:48,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182903621] [2020-01-16 18:05:48,169 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:48,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:48,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:48,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:48,170 INFO L87 Difference]: Start difference. First operand 1578 states and 7053 transitions. Second operand 11 states. [2020-01-16 18:05:48,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:48,373 INFO L93 Difference]: Finished difference Result 2958 states and 11725 transitions. [2020-01-16 18:05:48,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:48,373 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:48,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:48,380 INFO L225 Difference]: With dead ends: 2958 [2020-01-16 18:05:48,380 INFO L226 Difference]: Without dead ends: 2939 [2020-01-16 18:05:48,380 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:05:48,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2939 states. [2020-01-16 18:05:48,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2939 to 1573. [2020-01-16 18:05:48,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:05:48,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7040 transitions. [2020-01-16 18:05:48,448 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7040 transitions. Word has length 28 [2020-01-16 18:05:48,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:48,448 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7040 transitions. [2020-01-16 18:05:48,448 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:48,449 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7040 transitions. [2020-01-16 18:05:48,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:48,451 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:48,451 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:48,451 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 18:05:48,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:48,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1295465326, now seen corresponding path program 215 times [2020-01-16 18:05:48,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:48,451 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71260929] [2020-01-16 18:05:48,452 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:48,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:48,994 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:05:49,001 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 18:05:49,002 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71260929] [2020-01-16 18:05:49,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:49,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:49,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917286626] [2020-01-16 18:05:49,002 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:49,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:49,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:49,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:49,003 INFO L87 Difference]: Start difference. First operand 1573 states and 7040 transitions. Second operand 11 states. [2020-01-16 18:05:49,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:49,279 INFO L93 Difference]: Finished difference Result 2959 states and 11728 transitions. [2020-01-16 18:05:49,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:49,279 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:49,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:49,287 INFO L225 Difference]: With dead ends: 2959 [2020-01-16 18:05:49,287 INFO L226 Difference]: Without dead ends: 2941 [2020-01-16 18:05:49,287 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:05:49,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2941 states. [2020-01-16 18:05:49,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2941 to 1577. [2020-01-16 18:05:49,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:05:49,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7047 transitions. [2020-01-16 18:05:49,354 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7047 transitions. Word has length 28 [2020-01-16 18:05:49,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:49,354 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7047 transitions. [2020-01-16 18:05:49,355 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:49,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7047 transitions. [2020-01-16 18:05:49,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:49,357 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:49,357 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:49,357 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 18:05:49,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:49,357 INFO L82 PathProgramCache]: Analyzing trace with hash -765394476, now seen corresponding path program 216 times [2020-01-16 18:05:49,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:49,357 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880022430] [2020-01-16 18:05:49,358 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:49,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:49,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:49,867 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880022430] [2020-01-16 18:05:49,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:49,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:49,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894994112] [2020-01-16 18:05:49,867 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:49,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:49,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:49,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:49,868 INFO L87 Difference]: Start difference. First operand 1577 states and 7047 transitions. Second operand 11 states. [2020-01-16 18:05:50,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:50,146 INFO L93 Difference]: Finished difference Result 2955 states and 11716 transitions. [2020-01-16 18:05:50,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:50,146 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:50,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:50,153 INFO L225 Difference]: With dead ends: 2955 [2020-01-16 18:05:50,154 INFO L226 Difference]: Without dead ends: 2925 [2020-01-16 18:05:50,154 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:05:50,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2925 states. [2020-01-16 18:05:50,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2925 to 1561. [2020-01-16 18:05:50,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1561 states. [2020-01-16 18:05:50,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1561 states to 1561 states and 7014 transitions. [2020-01-16 18:05:50,221 INFO L78 Accepts]: Start accepts. Automaton has 1561 states and 7014 transitions. Word has length 28 [2020-01-16 18:05:50,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:50,221 INFO L478 AbstractCegarLoop]: Abstraction has 1561 states and 7014 transitions. [2020-01-16 18:05:50,221 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:50,221 INFO L276 IsEmpty]: Start isEmpty. Operand 1561 states and 7014 transitions. [2020-01-16 18:05:50,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:50,223 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:50,223 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:50,223 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 18:05:50,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:50,224 INFO L82 PathProgramCache]: Analyzing trace with hash 68637930, now seen corresponding path program 217 times [2020-01-16 18:05:50,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:50,224 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048033597] [2020-01-16 18:05:50,224 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:50,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:50,756 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:05:50,763 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 18:05:50,763 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048033597] [2020-01-16 18:05:50,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:50,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:50,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432096659] [2020-01-16 18:05:50,764 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:50,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:50,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:50,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:50,764 INFO L87 Difference]: Start difference. First operand 1561 states and 7014 transitions. Second operand 11 states. [2020-01-16 18:05:50,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:50,960 INFO L93 Difference]: Finished difference Result 2976 states and 11795 transitions. [2020-01-16 18:05:50,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:50,960 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:50,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:50,967 INFO L225 Difference]: With dead ends: 2976 [2020-01-16 18:05:50,967 INFO L226 Difference]: Without dead ends: 2960 [2020-01-16 18:05:50,967 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 18:05:51,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2960 states. [2020-01-16 18:05:51,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2960 to 1582. [2020-01-16 18:05:51,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 18:05:51,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7081 transitions. [2020-01-16 18:05:51,034 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7081 transitions. Word has length 28 [2020-01-16 18:05:51,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:51,034 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7081 transitions. [2020-01-16 18:05:51,034 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:51,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7081 transitions. [2020-01-16 18:05:51,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:51,036 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:51,036 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 18:05:51,037 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 18:05:51,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:51,037 INFO L82 PathProgramCache]: Analyzing trace with hash 813340428, now seen corresponding path program 218 times [2020-01-16 18:05:51,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:51,037 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896115442] [2020-01-16 18:05:51,037 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:51,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:51,580 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 18:05:51,580 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896115442] [2020-01-16 18:05:51,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:51,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:51,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458139545] [2020-01-16 18:05:51,580 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:51,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:51,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:51,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:51,581 INFO L87 Difference]: Start difference. First operand 1582 states and 7081 transitions. Second operand 11 states. [2020-01-16 18:05:51,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:51,719 INFO L93 Difference]: Finished difference Result 2980 states and 11796 transitions. [2020-01-16 18:05:51,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:51,720 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:51,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:51,727 INFO L225 Difference]: With dead ends: 2980 [2020-01-16 18:05:51,727 INFO L226 Difference]: Without dead ends: 2953 [2020-01-16 18:05:51,728 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 18:05:51,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2953 states. [2020-01-16 18:05:51,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2953 to 1575. [2020-01-16 18:05:51,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:05:51,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7061 transitions. [2020-01-16 18:05:51,794 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7061 transitions. Word has length 28 [2020-01-16 18:05:51,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:51,794 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7061 transitions. [2020-01-16 18:05:51,795 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:51,795 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7061 transitions. [2020-01-16 18:05:51,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:51,797 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:51,797 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:51,797 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 18:05:51,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:51,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1679578888, now seen corresponding path program 219 times [2020-01-16 18:05:51,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:51,797 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974204220] [2020-01-16 18:05:51,798 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:51,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:52,319 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 18:05:52,320 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974204220] [2020-01-16 18:05:52,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:52,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:52,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327345208] [2020-01-16 18:05:52,320 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:52,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:52,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:52,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:52,321 INFO L87 Difference]: Start difference. First operand 1575 states and 7061 transitions. Second operand 11 states. [2020-01-16 18:05:52,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:52,521 INFO L93 Difference]: Finished difference Result 2973 states and 11783 transitions. [2020-01-16 18:05:52,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:52,522 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:52,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:52,529 INFO L225 Difference]: With dead ends: 2973 [2020-01-16 18:05:52,529 INFO L226 Difference]: Without dead ends: 2957 [2020-01-16 18:05:52,530 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 18:05:52,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2957 states. [2020-01-16 18:05:52,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2957 to 1581. [2020-01-16 18:05:52,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:05:52,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7072 transitions. [2020-01-16 18:05:52,596 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7072 transitions. Word has length 28 [2020-01-16 18:05:52,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:52,597 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7072 transitions. [2020-01-16 18:05:52,597 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:52,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7072 transitions. [2020-01-16 18:05:52,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:52,599 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:52,599 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:52,599 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 18:05:52,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:52,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1125983412, now seen corresponding path program 220 times [2020-01-16 18:05:52,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:52,600 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668311475] [2020-01-16 18:05:52,600 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:52,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:53,119 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:05:53,125 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 18:05:53,126 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668311475] [2020-01-16 18:05:53,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:53,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:53,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685177699] [2020-01-16 18:05:53,126 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:53,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:53,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:53,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:53,126 INFO L87 Difference]: Start difference. First operand 1581 states and 7072 transitions. Second operand 11 states. [2020-01-16 18:05:53,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:53,302 INFO L93 Difference]: Finished difference Result 2975 states and 11781 transitions. [2020-01-16 18:05:53,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:53,303 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:53,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:53,310 INFO L225 Difference]: With dead ends: 2975 [2020-01-16 18:05:53,310 INFO L226 Difference]: Without dead ends: 2951 [2020-01-16 18:05:53,311 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:05:53,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2020-01-16 18:05:53,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 1575. [2020-01-16 18:05:53,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:05:53,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7055 transitions. [2020-01-16 18:05:53,377 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7055 transitions. Word has length 28 [2020-01-16 18:05:53,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:53,377 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7055 transitions. [2020-01-16 18:05:53,377 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:53,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7055 transitions. [2020-01-16 18:05:53,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:53,379 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:53,380 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 18:05:53,380 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 18:05:53,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:53,380 INFO L82 PathProgramCache]: Analyzing trace with hash -259744952, now seen corresponding path program 221 times [2020-01-16 18:05:53,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:53,380 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499502567] [2020-01-16 18:05:53,380 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:53,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:53,945 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:05:53,950 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 18:05:53,951 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499502567] [2020-01-16 18:05:53,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:53,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:53,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216417558] [2020-01-16 18:05:53,951 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:53,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:53,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:53,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:53,952 INFO L87 Difference]: Start difference. First operand 1575 states and 7055 transitions. Second operand 11 states. [2020-01-16 18:05:54,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:54,084 INFO L93 Difference]: Finished difference Result 2985 states and 11800 transitions. [2020-01-16 18:05:54,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:54,084 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:54,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:54,092 INFO L225 Difference]: With dead ends: 2985 [2020-01-16 18:05:54,092 INFO L226 Difference]: Without dead ends: 2965 [2020-01-16 18:05:54,092 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 18:05:54,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2965 states. [2020-01-16 18:05:54,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2965 to 1585. [2020-01-16 18:05:54,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 18:05:54,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7072 transitions. [2020-01-16 18:05:54,161 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7072 transitions. Word has length 28 [2020-01-16 18:05:54,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:54,161 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7072 transitions. [2020-01-16 18:05:54,161 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:54,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7072 transitions. [2020-01-16 18:05:54,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:54,164 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:54,164 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:54,164 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 18:05:54,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:54,164 INFO L82 PathProgramCache]: Analyzing trace with hash 484957546, now seen corresponding path program 222 times [2020-01-16 18:05:54,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:54,164 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200317906] [2020-01-16 18:05:54,164 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:54,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:54,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:54,701 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200317906] [2020-01-16 18:05:54,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:54,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:54,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417139512] [2020-01-16 18:05:54,701 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:54,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:54,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:54,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:54,702 INFO L87 Difference]: Start difference. First operand 1585 states and 7072 transitions. Second operand 11 states. [2020-01-16 18:05:54,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:54,872 INFO L93 Difference]: Finished difference Result 2983 states and 11788 transitions. [2020-01-16 18:05:54,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:54,872 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:54,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:54,879 INFO L225 Difference]: With dead ends: 2983 [2020-01-16 18:05:54,879 INFO L226 Difference]: Without dead ends: 2947 [2020-01-16 18:05:54,879 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 18:05:54,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2947 states. [2020-01-16 18:05:54,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2947 to 1567. [2020-01-16 18:05:54,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:05:54,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7034 transitions. [2020-01-16 18:05:54,948 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7034 transitions. Word has length 28 [2020-01-16 18:05:54,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:54,948 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7034 transitions. [2020-01-16 18:05:54,948 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:54,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7034 transitions. [2020-01-16 18:05:54,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:54,951 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:54,951 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 18:05:54,951 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 18:05:54,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:54,951 INFO L82 PathProgramCache]: Analyzing trace with hash -437708336, now seen corresponding path program 223 times [2020-01-16 18:05:54,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:54,951 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672782992] [2020-01-16 18:05:54,951 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:54,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:55,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:55,481 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672782992] [2020-01-16 18:05:55,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:55,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:55,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613748823] [2020-01-16 18:05:55,481 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:55,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:55,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:55,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:55,482 INFO L87 Difference]: Start difference. First operand 1567 states and 7034 transitions. Second operand 11 states. [2020-01-16 18:05:55,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:55,680 INFO L93 Difference]: Finished difference Result 2962 states and 11752 transitions. [2020-01-16 18:05:55,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:55,680 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:55,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:55,688 INFO L225 Difference]: With dead ends: 2962 [2020-01-16 18:05:55,688 INFO L226 Difference]: Without dead ends: 2946 [2020-01-16 18:05:55,688 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 18:05:55,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2946 states. [2020-01-16 18:05:55,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2946 to 1579. [2020-01-16 18:05:55,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:05:55,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7065 transitions. [2020-01-16 18:05:55,754 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7065 transitions. Word has length 28 [2020-01-16 18:05:55,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:55,755 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7065 transitions. [2020-01-16 18:05:55,755 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:55,755 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7065 transitions. [2020-01-16 18:05:55,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:55,757 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:55,757 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:55,757 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 18:05:55,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:55,757 INFO L82 PathProgramCache]: Analyzing trace with hash 306994162, now seen corresponding path program 224 times [2020-01-16 18:05:55,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:55,757 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099515479] [2020-01-16 18:05:55,758 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:55,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:56,295 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 18:05:56,295 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099515479] [2020-01-16 18:05:56,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:56,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:56,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442039601] [2020-01-16 18:05:56,296 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:56,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:56,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:56,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:56,296 INFO L87 Difference]: Start difference. First operand 1579 states and 7065 transitions. Second operand 11 states. [2020-01-16 18:05:56,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:56,437 INFO L93 Difference]: Finished difference Result 2966 states and 11753 transitions. [2020-01-16 18:05:56,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:56,438 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:56,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:56,446 INFO L225 Difference]: With dead ends: 2966 [2020-01-16 18:05:56,446 INFO L226 Difference]: Without dead ends: 2939 [2020-01-16 18:05:56,446 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:05:56,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2939 states. [2020-01-16 18:05:56,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2939 to 1572. [2020-01-16 18:05:56,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:05:56,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7047 transitions. [2020-01-16 18:05:56,513 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7047 transitions. Word has length 28 [2020-01-16 18:05:56,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:56,513 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7047 transitions. [2020-01-16 18:05:56,513 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:56,513 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7047 transitions. [2020-01-16 18:05:56,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:56,515 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:56,515 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:05:56,515 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 18:05:56,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:56,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1711088200, now seen corresponding path program 225 times [2020-01-16 18:05:56,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:56,516 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330572698] [2020-01-16 18:05:56,516 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:56,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:57,034 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:05:57,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:57,041 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330572698] [2020-01-16 18:05:57,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:57,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:57,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825327547] [2020-01-16 18:05:57,041 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:57,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:57,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:57,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:57,042 INFO L87 Difference]: Start difference. First operand 1572 states and 7047 transitions. Second operand 11 states. [2020-01-16 18:05:57,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:57,237 INFO L93 Difference]: Finished difference Result 2953 states and 11728 transitions. [2020-01-16 18:05:57,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:57,237 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:57,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:57,245 INFO L225 Difference]: With dead ends: 2953 [2020-01-16 18:05:57,245 INFO L226 Difference]: Without dead ends: 2937 [2020-01-16 18:05:57,245 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:05:57,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2020-01-16 18:05:57,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 1576. [2020-01-16 18:05:57,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:05:57,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7054 transitions. [2020-01-16 18:05:57,311 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7054 transitions. Word has length 28 [2020-01-16 18:05:57,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:57,312 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7054 transitions. [2020-01-16 18:05:57,312 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:57,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7054 transitions. [2020-01-16 18:05:57,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:57,314 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:57,314 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 18:05:57,314 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 18:05:57,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:57,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1139633394, now seen corresponding path program 226 times [2020-01-16 18:05:57,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:57,315 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467471529] [2020-01-16 18:05:57,315 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:57,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:57,855 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:05:57,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:57,864 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467471529] [2020-01-16 18:05:57,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:57,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:57,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088011958] [2020-01-16 18:05:57,865 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:57,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:57,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:57,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:57,866 INFO L87 Difference]: Start difference. First operand 1576 states and 7054 transitions. Second operand 11 states. [2020-01-16 18:05:58,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:58,054 INFO L93 Difference]: Finished difference Result 2951 states and 11720 transitions. [2020-01-16 18:05:58,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:58,055 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:58,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:58,063 INFO L225 Difference]: With dead ends: 2951 [2020-01-16 18:05:58,063 INFO L226 Difference]: Without dead ends: 2933 [2020-01-16 18:05:58,063 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 18:05:58,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2933 states. [2020-01-16 18:05:58,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2933 to 1572. [2020-01-16 18:05:58,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:05:58,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7043 transitions. [2020-01-16 18:05:58,148 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7043 transitions. Word has length 28 [2020-01-16 18:05:58,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:58,148 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7043 transitions. [2020-01-16 18:05:58,148 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:58,148 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7043 transitions. [2020-01-16 18:05:58,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:58,150 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:58,150 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 18:05:58,150 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 18:05:58,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:58,151 INFO L82 PathProgramCache]: Analyzing trace with hash -228235640, now seen corresponding path program 227 times [2020-01-16 18:05:58,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:58,151 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611177411] [2020-01-16 18:05:58,151 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:58,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:58,666 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:05:58,673 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 18:05:58,673 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611177411] [2020-01-16 18:05:58,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:58,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:58,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434231915] [2020-01-16 18:05:58,674 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:58,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:58,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:58,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:58,674 INFO L87 Difference]: Start difference. First operand 1572 states and 7043 transitions. Second operand 11 states. [2020-01-16 18:05:58,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:58,836 INFO L93 Difference]: Finished difference Result 2962 states and 11740 transitions. [2020-01-16 18:05:58,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:58,836 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:58,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:58,843 INFO L225 Difference]: With dead ends: 2962 [2020-01-16 18:05:58,843 INFO L226 Difference]: Without dead ends: 2942 [2020-01-16 18:05:58,843 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 18:05:58,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2020-01-16 18:05:58,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 1577. [2020-01-16 18:05:58,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:05:58,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7051 transitions. [2020-01-16 18:05:58,909 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7051 transitions. Word has length 28 [2020-01-16 18:05:58,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:58,910 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7051 transitions. [2020-01-16 18:05:58,910 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:58,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7051 transitions. [2020-01-16 18:05:58,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:58,912 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:58,912 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 18:05:58,912 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 18:05:58,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:58,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1544392944, now seen corresponding path program 228 times [2020-01-16 18:05:58,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:58,912 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959899629] [2020-01-16 18:05:58,913 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:58,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:05:59,448 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:05:59,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:05:59,455 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959899629] [2020-01-16 18:05:59,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:05:59,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:05:59,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935603334] [2020-01-16 18:05:59,455 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:05:59,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:05:59,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:05:59,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:05:59,456 INFO L87 Difference]: Start difference. First operand 1577 states and 7051 transitions. Second operand 11 states. [2020-01-16 18:05:59,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:05:59,647 INFO L93 Difference]: Finished difference Result 2956 states and 11724 transitions. [2020-01-16 18:05:59,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:05:59,647 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:05:59,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:05:59,654 INFO L225 Difference]: With dead ends: 2956 [2020-01-16 18:05:59,655 INFO L226 Difference]: Without dead ends: 2932 [2020-01-16 18:05:59,655 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 18:05:59,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2932 states. [2020-01-16 18:05:59,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2932 to 1567. [2020-01-16 18:05:59,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:05:59,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7029 transitions. [2020-01-16 18:05:59,722 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7029 transitions. Word has length 28 [2020-01-16 18:05:59,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:05:59,722 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7029 transitions. [2020-01-16 18:05:59,722 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:05:59,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7029 transitions. [2020-01-16 18:05:59,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:05:59,725 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:05:59,725 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 18:05:59,725 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 18:05:59,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:05:59,725 INFO L82 PathProgramCache]: Analyzing trace with hash -427205232, now seen corresponding path program 229 times [2020-01-16 18:05:59,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:05:59,725 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969399305] [2020-01-16 18:05:59,725 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:05:59,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:00,240 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 18:06:00,240 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969399305] [2020-01-16 18:06:00,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:00,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:00,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336247512] [2020-01-16 18:06:00,240 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:00,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:00,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:00,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:00,241 INFO L87 Difference]: Start difference. First operand 1567 states and 7029 transitions. Second operand 11 states. [2020-01-16 18:06:00,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:00,422 INFO L93 Difference]: Finished difference Result 2954 states and 11732 transitions. [2020-01-16 18:06:00,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:00,423 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:00,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:00,430 INFO L225 Difference]: With dead ends: 2954 [2020-01-16 18:06:00,431 INFO L226 Difference]: Without dead ends: 2938 [2020-01-16 18:06:00,431 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:06:00,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2020-01-16 18:06:00,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 1577. [2020-01-16 18:06:00,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:06:00,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7055 transitions. [2020-01-16 18:06:00,500 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7055 transitions. Word has length 28 [2020-01-16 18:06:00,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:00,500 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7055 transitions. [2020-01-16 18:06:00,500 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:00,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7055 transitions. [2020-01-16 18:06:00,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:00,503 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:00,503 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 18:06:00,503 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 18:06:00,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:00,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1062199764, now seen corresponding path program 230 times [2020-01-16 18:06:00,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:00,503 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357976164] [2020-01-16 18:06:00,503 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:00,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:01,011 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 18:06:01,011 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357976164] [2020-01-16 18:06:01,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:01,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:01,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210545547] [2020-01-16 18:06:01,012 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:01,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:01,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:01,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:01,012 INFO L87 Difference]: Start difference. First operand 1577 states and 7055 transitions. Second operand 11 states. [2020-01-16 18:06:01,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:01,212 INFO L93 Difference]: Finished difference Result 2956 states and 11730 transitions. [2020-01-16 18:06:01,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:01,213 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:01,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:01,220 INFO L225 Difference]: With dead ends: 2956 [2020-01-16 18:06:01,220 INFO L226 Difference]: Without dead ends: 2932 [2020-01-16 18:06:01,220 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 18:06:01,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2932 states. [2020-01-16 18:06:01,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2932 to 1571. [2020-01-16 18:06:01,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:06:01,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7040 transitions. [2020-01-16 18:06:01,289 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7040 transitions. Word has length 28 [2020-01-16 18:06:01,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:01,290 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7040 transitions. [2020-01-16 18:06:01,290 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:01,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7040 transitions. [2020-01-16 18:06:01,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:01,292 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:01,292 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:06:01,292 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 18:06:01,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:01,292 INFO L82 PathProgramCache]: Analyzing trace with hash 110650346, now seen corresponding path program 231 times [2020-01-16 18:06:01,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:01,293 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223642940] [2020-01-16 18:06:01,293 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:01,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:01,807 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 18:06:01,807 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223642940] [2020-01-16 18:06:01,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:01,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:01,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843064058] [2020-01-16 18:06:01,807 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:01,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:01,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:01,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:01,808 INFO L87 Difference]: Start difference. First operand 1571 states and 7040 transitions. Second operand 11 states. [2020-01-16 18:06:02,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:02,013 INFO L93 Difference]: Finished difference Result 2948 states and 11714 transitions. [2020-01-16 18:06:02,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:02,013 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:02,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:02,021 INFO L225 Difference]: With dead ends: 2948 [2020-01-16 18:06:02,021 INFO L226 Difference]: Without dead ends: 2932 [2020-01-16 18:06:02,022 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 18:06:02,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2932 states. [2020-01-16 18:06:02,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2932 to 1575. [2020-01-16 18:06:02,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:06:02,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7047 transitions. [2020-01-16 18:06:02,088 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7047 transitions. Word has length 28 [2020-01-16 18:06:02,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:02,088 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7047 transitions. [2020-01-16 18:06:02,089 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:02,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7047 transitions. [2020-01-16 18:06:02,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:02,091 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:02,091 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 18:06:02,091 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 18:06:02,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:02,091 INFO L82 PathProgramCache]: Analyzing trace with hash -460804460, now seen corresponding path program 232 times [2020-01-16 18:06:02,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:02,091 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739092835] [2020-01-16 18:06:02,092 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:02,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:02,610 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 18:06:02,610 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739092835] [2020-01-16 18:06:02,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:02,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:02,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357682335] [2020-01-16 18:06:02,610 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:02,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:02,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:02,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:02,611 INFO L87 Difference]: Start difference. First operand 1575 states and 7047 transitions. Second operand 11 states. [2020-01-16 18:06:02,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:02,834 INFO L93 Difference]: Finished difference Result 2946 states and 11706 transitions. [2020-01-16 18:06:02,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:02,834 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:02,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:02,842 INFO L225 Difference]: With dead ends: 2946 [2020-01-16 18:06:02,842 INFO L226 Difference]: Without dead ends: 2928 [2020-01-16 18:06:02,842 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:06:02,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2020-01-16 18:06:02,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 1571. [2020-01-16 18:06:02,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:06:02,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7036 transitions. [2020-01-16 18:06:02,909 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7036 transitions. Word has length 28 [2020-01-16 18:06:02,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:02,909 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7036 transitions. [2020-01-16 18:06:02,909 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:02,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7036 transitions. [2020-01-16 18:06:02,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:02,911 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:02,912 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 18:06:02,912 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 18:06:02,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:02,912 INFO L82 PathProgramCache]: Analyzing trace with hash 526969962, now seen corresponding path program 233 times [2020-01-16 18:06:02,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:02,912 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407472149] [2020-01-16 18:06:02,912 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:02,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:03,433 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:06:03,440 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 18:06:03,440 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407472149] [2020-01-16 18:06:03,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:03,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:03,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528884469] [2020-01-16 18:06:03,441 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:03,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:03,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:03,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:03,441 INFO L87 Difference]: Start difference. First operand 1571 states and 7036 transitions. Second operand 11 states. [2020-01-16 18:06:03,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:03,623 INFO L93 Difference]: Finished difference Result 2952 states and 11718 transitions. [2020-01-16 18:06:03,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:03,624 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:03,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:03,630 INFO L225 Difference]: With dead ends: 2952 [2020-01-16 18:06:03,630 INFO L226 Difference]: Without dead ends: 2934 [2020-01-16 18:06:03,630 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 18:06:03,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2934 states. [2020-01-16 18:06:03,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2934 to 1575. [2020-01-16 18:06:03,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:06:03,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7043 transitions. [2020-01-16 18:06:03,697 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7043 transitions. Word has length 28 [2020-01-16 18:06:03,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:03,697 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7043 transitions. [2020-01-16 18:06:03,697 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:03,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7043 transitions. [2020-01-16 18:06:03,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:03,699 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:03,700 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:06:03,700 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 18:06:03,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:03,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1533889840, now seen corresponding path program 234 times [2020-01-16 18:06:03,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:03,700 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311611645] [2020-01-16 18:06:03,700 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:03,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:04,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:06:04,226 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311611645] [2020-01-16 18:06:04,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:04,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:04,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458601664] [2020-01-16 18:06:04,227 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:04,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:04,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:04,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:04,227 INFO L87 Difference]: Start difference. First operand 1575 states and 7043 transitions. Second operand 11 states. [2020-01-16 18:06:04,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:04,421 INFO L93 Difference]: Finished difference Result 2948 states and 11706 transitions. [2020-01-16 18:06:04,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:04,421 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:04,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:04,429 INFO L225 Difference]: With dead ends: 2948 [2020-01-16 18:06:04,429 INFO L226 Difference]: Without dead ends: 2926 [2020-01-16 18:06:04,429 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 18:06:04,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2020-01-16 18:06:04,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 1567. [2020-01-16 18:06:04,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:06:04,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7025 transitions. [2020-01-16 18:06:04,495 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7025 transitions. Word has length 28 [2020-01-16 18:06:04,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:04,495 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7025 transitions. [2020-01-16 18:06:04,495 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:04,495 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7025 transitions. [2020-01-16 18:06:04,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:04,497 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:04,498 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:06:04,498 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 18:06:04,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:04,498 INFO L82 PathProgramCache]: Analyzing trace with hash 328000370, now seen corresponding path program 235 times [2020-01-16 18:06:04,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:04,498 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660031705] [2020-01-16 18:06:04,498 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:04,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:05,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:06:05,045 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660031705] [2020-01-16 18:06:05,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:05,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:05,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423648030] [2020-01-16 18:06:05,046 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:05,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:05,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:05,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:05,046 INFO L87 Difference]: Start difference. First operand 1567 states and 7025 transitions. Second operand 11 states. [2020-01-16 18:06:05,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:05,190 INFO L93 Difference]: Finished difference Result 2977 states and 11774 transitions. [2020-01-16 18:06:05,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:05,190 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:05,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:05,198 INFO L225 Difference]: With dead ends: 2977 [2020-01-16 18:06:05,198 INFO L226 Difference]: Without dead ends: 2957 [2020-01-16 18:06:05,198 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:06:05,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2957 states. [2020-01-16 18:06:05,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2957 to 1583. [2020-01-16 18:06:05,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:06:05,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7062 transitions. [2020-01-16 18:06:05,266 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7062 transitions. Word has length 28 [2020-01-16 18:06:05,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:05,266 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7062 transitions. [2020-01-16 18:06:05,266 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:05,266 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7062 transitions. [2020-01-16 18:06:05,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:05,269 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:05,269 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:06:05,269 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 18:06:05,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:05,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1072702868, now seen corresponding path program 236 times [2020-01-16 18:06:05,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:05,270 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768845928] [2020-01-16 18:06:05,270 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:05,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:05,820 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 18:06:05,821 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768845928] [2020-01-16 18:06:05,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:05,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:05,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44425086] [2020-01-16 18:06:05,821 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:05,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:05,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:05,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:05,822 INFO L87 Difference]: Start difference. First operand 1583 states and 7062 transitions. Second operand 11 states. [2020-01-16 18:06:06,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:06,014 INFO L93 Difference]: Finished difference Result 2975 states and 11762 transitions. [2020-01-16 18:06:06,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:06,015 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:06,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:06,022 INFO L225 Difference]: With dead ends: 2975 [2020-01-16 18:06:06,022 INFO L226 Difference]: Without dead ends: 2947 [2020-01-16 18:06:06,022 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 18:06:06,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2947 states. [2020-01-16 18:06:06,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2947 to 1573. [2020-01-16 18:06:06,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:06:06,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7039 transitions. [2020-01-16 18:06:06,089 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7039 transitions. Word has length 28 [2020-01-16 18:06:06,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:06,089 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7039 transitions. [2020-01-16 18:06:06,089 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:06,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7039 transitions. [2020-01-16 18:06:06,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:06,092 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:06,092 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 18:06:06,092 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 18:06:06,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:06,092 INFO L82 PathProgramCache]: Analyzing trace with hash 865855948, now seen corresponding path program 237 times [2020-01-16 18:06:06,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:06,092 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486567506] [2020-01-16 18:06:06,092 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:06,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:06,626 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:06:06,633 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 18:06:06,633 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486567506] [2020-01-16 18:06:06,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:06,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:06,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221062576] [2020-01-16 18:06:06,634 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:06,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:06,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:06,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:06,634 INFO L87 Difference]: Start difference. First operand 1573 states and 7039 transitions. Second operand 11 states. [2020-01-16 18:06:06,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:06,782 INFO L93 Difference]: Finished difference Result 2968 states and 11747 transitions. [2020-01-16 18:06:06,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:06,782 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:06,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:06,789 INFO L225 Difference]: With dead ends: 2968 [2020-01-16 18:06:06,789 INFO L226 Difference]: Without dead ends: 2948 [2020-01-16 18:06:06,789 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 18:06:06,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2948 states. [2020-01-16 18:06:06,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2948 to 1578. [2020-01-16 18:06:06,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:06:06,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7047 transitions. [2020-01-16 18:06:06,856 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7047 transitions. Word has length 28 [2020-01-16 18:06:06,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:06,856 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7047 transitions. [2020-01-16 18:06:06,856 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:06,856 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7047 transitions. [2020-01-16 18:06:06,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:06,858 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:06,858 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:06:06,858 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 18:06:06,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:06,858 INFO L82 PathProgramCache]: Analyzing trace with hash -450301356, now seen corresponding path program 238 times [2020-01-16 18:06:06,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:06,859 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14220530] [2020-01-16 18:06:06,859 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:06,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:07,389 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 18:06:07,390 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14220530] [2020-01-16 18:06:07,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:07,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:07,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956538660] [2020-01-16 18:06:07,390 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:07,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:07,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:07,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:07,391 INFO L87 Difference]: Start difference. First operand 1578 states and 7047 transitions. Second operand 11 states. [2020-01-16 18:06:07,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:07,594 INFO L93 Difference]: Finished difference Result 2962 states and 11731 transitions. [2020-01-16 18:06:07,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:07,594 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:07,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:07,602 INFO L225 Difference]: With dead ends: 2962 [2020-01-16 18:06:07,602 INFO L226 Difference]: Without dead ends: 2943 [2020-01-16 18:06:07,603 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:06:07,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2943 states. [2020-01-16 18:06:07,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2943 to 1573. [2020-01-16 18:06:07,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:06:07,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7034 transitions. [2020-01-16 18:06:07,673 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7034 transitions. Word has length 28 [2020-01-16 18:06:07,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:07,673 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7034 transitions. [2020-01-16 18:06:07,673 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:07,673 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7034 transitions. [2020-01-16 18:06:07,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:07,676 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:07,676 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 18:06:07,676 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 18:06:07,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:07,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1073467892, now seen corresponding path program 239 times [2020-01-16 18:06:07,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:07,676 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370533786] [2020-01-16 18:06:07,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:07,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:08,211 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:06:08,218 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 18:06:08,218 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370533786] [2020-01-16 18:06:08,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:08,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:08,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112430176] [2020-01-16 18:06:08,218 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:08,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:08,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:08,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:08,219 INFO L87 Difference]: Start difference. First operand 1573 states and 7034 transitions. Second operand 11 states. [2020-01-16 18:06:08,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:08,410 INFO L93 Difference]: Finished difference Result 2963 states and 11734 transitions. [2020-01-16 18:06:08,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:08,411 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:08,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:08,418 INFO L225 Difference]: With dead ends: 2963 [2020-01-16 18:06:08,418 INFO L226 Difference]: Without dead ends: 2945 [2020-01-16 18:06:08,419 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:06:08,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2945 states. [2020-01-16 18:06:08,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2945 to 1577. [2020-01-16 18:06:08,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:06:08,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7041 transitions. [2020-01-16 18:06:08,485 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7041 transitions. Word has length 28 [2020-01-16 18:06:08,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:08,485 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7041 transitions. [2020-01-16 18:06:08,485 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:08,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7041 transitions. [2020-01-16 18:06:08,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:08,488 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:08,488 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 18:06:08,488 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 18:06:08,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:08,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1160639602, now seen corresponding path program 240 times [2020-01-16 18:06:08,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:08,488 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529438221] [2020-01-16 18:06:08,488 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:08,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:09,022 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:06:09,029 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 18:06:09,029 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529438221] [2020-01-16 18:06:09,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:09,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:09,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827938450] [2020-01-16 18:06:09,029 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:09,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:09,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:09,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:09,030 INFO L87 Difference]: Start difference. First operand 1577 states and 7041 transitions. Second operand 11 states. [2020-01-16 18:06:09,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:09,218 INFO L93 Difference]: Finished difference Result 2959 states and 11722 transitions. [2020-01-16 18:06:09,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:09,219 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:09,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:09,226 INFO L225 Difference]: With dead ends: 2959 [2020-01-16 18:06:09,226 INFO L226 Difference]: Without dead ends: 2923 [2020-01-16 18:06:09,226 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 18:06:09,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2923 states. [2020-01-16 18:06:09,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2923 to 1555. [2020-01-16 18:06:09,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1555 states. [2020-01-16 18:06:09,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 6997 transitions. [2020-01-16 18:06:09,293 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 6997 transitions. Word has length 28 [2020-01-16 18:06:09,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:09,293 INFO L478 AbstractCegarLoop]: Abstraction has 1555 states and 6997 transitions. [2020-01-16 18:06:09,294 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:09,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 6997 transitions. [2020-01-16 18:06:09,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:09,296 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:09,296 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:06:09,296 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 18:06:09,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:09,296 INFO L82 PathProgramCache]: Analyzing trace with hash 424017834, now seen corresponding path program 241 times [2020-01-16 18:06:09,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:09,296 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627871259] [2020-01-16 18:06:09,296 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:09,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:09,737 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:06:09,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:06:09,851 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627871259] [2020-01-16 18:06:09,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:09,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:09,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878791919] [2020-01-16 18:06:09,852 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:09,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:09,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:09,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:09,852 INFO L87 Difference]: Start difference. First operand 1555 states and 6997 transitions. Second operand 11 states. [2020-01-16 18:06:10,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:10,053 INFO L93 Difference]: Finished difference Result 2936 states and 11714 transitions. [2020-01-16 18:06:10,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:10,054 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:10,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:10,061 INFO L225 Difference]: With dead ends: 2936 [2020-01-16 18:06:10,061 INFO L226 Difference]: Without dead ends: 2921 [2020-01-16 18:06:10,061 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 18:06:10,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2020-01-16 18:06:10,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 1576. [2020-01-16 18:06:10,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:06:10,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7079 transitions. [2020-01-16 18:06:10,128 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7079 transitions. Word has length 28 [2020-01-16 18:06:10,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:10,128 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7079 transitions. [2020-01-16 18:06:10,129 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:10,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7079 transitions. [2020-01-16 18:06:10,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:10,131 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:10,131 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 18:06:10,131 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 18:06:10,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:10,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1168720332, now seen corresponding path program 242 times [2020-01-16 18:06:10,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:10,132 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487523809] [2020-01-16 18:06:10,132 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:10,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:10,655 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 18:06:10,656 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487523809] [2020-01-16 18:06:10,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:10,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:10,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434313397] [2020-01-16 18:06:10,656 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:10,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:10,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:10,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:10,657 INFO L87 Difference]: Start difference. First operand 1576 states and 7079 transitions. Second operand 11 states. [2020-01-16 18:06:10,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:10,846 INFO L93 Difference]: Finished difference Result 2937 states and 11711 transitions. [2020-01-16 18:06:10,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:10,846 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:10,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:10,853 INFO L225 Difference]: With dead ends: 2937 [2020-01-16 18:06:10,853 INFO L226 Difference]: Without dead ends: 2916 [2020-01-16 18:06:10,853 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 18:06:10,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2020-01-16 18:06:10,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 1571. [2020-01-16 18:06:10,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:06:10,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7065 transitions. [2020-01-16 18:06:10,920 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7065 transitions. Word has length 28 [2020-01-16 18:06:10,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:10,920 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7065 transitions. [2020-01-16 18:06:10,920 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:10,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7065 transitions. [2020-01-16 18:06:10,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:10,922 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:10,922 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 18:06:10,922 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 18:06:10,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:10,923 INFO L82 PathProgramCache]: Analyzing trace with hash 2034958792, now seen corresponding path program 243 times [2020-01-16 18:06:10,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:10,923 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691868438] [2020-01-16 18:06:10,923 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:10,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:11,440 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 18:06:11,441 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691868438] [2020-01-16 18:06:11,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:11,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:11,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102067451] [2020-01-16 18:06:11,441 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:11,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:11,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:11,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:11,442 INFO L87 Difference]: Start difference. First operand 1571 states and 7065 transitions. Second operand 11 states. [2020-01-16 18:06:11,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:11,664 INFO L93 Difference]: Finished difference Result 2941 states and 11718 transitions. [2020-01-16 18:06:11,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:11,664 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:11,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:11,672 INFO L225 Difference]: With dead ends: 2941 [2020-01-16 18:06:11,672 INFO L226 Difference]: Without dead ends: 2926 [2020-01-16 18:06:11,672 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:06:11,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2020-01-16 18:06:11,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 1577. [2020-01-16 18:06:11,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:06:11,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7076 transitions. [2020-01-16 18:06:11,739 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7076 transitions. Word has length 28 [2020-01-16 18:06:11,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:11,739 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7076 transitions. [2020-01-16 18:06:11,739 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:11,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7076 transitions. [2020-01-16 18:06:11,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:11,741 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:11,741 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 18:06:11,741 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 18:06:11,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:11,742 INFO L82 PathProgramCache]: Analyzing trace with hash -770603508, now seen corresponding path program 244 times [2020-01-16 18:06:11,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:11,742 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569804833] [2020-01-16 18:06:11,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:11,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:12,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:06:12,265 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569804833] [2020-01-16 18:06:12,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:12,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:12,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949597716] [2020-01-16 18:06:12,265 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:12,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:12,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:12,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:12,265 INFO L87 Difference]: Start difference. First operand 1577 states and 7076 transitions. Second operand 11 states. [2020-01-16 18:06:12,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:12,411 INFO L93 Difference]: Finished difference Result 2946 states and 11722 transitions. [2020-01-16 18:06:12,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:12,411 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:12,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:12,419 INFO L225 Difference]: With dead ends: 2946 [2020-01-16 18:06:12,419 INFO L226 Difference]: Without dead ends: 2920 [2020-01-16 18:06:12,419 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:06:12,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2920 states. [2020-01-16 18:06:12,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2920 to 1571. [2020-01-16 18:06:12,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:06:12,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7059 transitions. [2020-01-16 18:06:12,486 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7059 transitions. Word has length 28 [2020-01-16 18:06:12,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:12,486 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7059 transitions. [2020-01-16 18:06:12,486 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:12,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7059 transitions. [2020-01-16 18:06:12,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:12,488 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:12,488 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 18:06:12,488 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 18:06:12,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:12,488 INFO L82 PathProgramCache]: Analyzing trace with hash 95634952, now seen corresponding path program 245 times [2020-01-16 18:06:12,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:12,489 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421645980] [2020-01-16 18:06:12,489 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:12,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:13,005 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 18:06:13,005 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421645980] [2020-01-16 18:06:13,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:13,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:13,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933777093] [2020-01-16 18:06:13,006 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:13,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:13,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:13,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:13,006 INFO L87 Difference]: Start difference. First operand 1571 states and 7059 transitions. Second operand 11 states. [2020-01-16 18:06:13,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:13,213 INFO L93 Difference]: Finished difference Result 2944 states and 11719 transitions. [2020-01-16 18:06:13,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:13,214 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:13,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:13,221 INFO L225 Difference]: With dead ends: 2944 [2020-01-16 18:06:13,222 INFO L226 Difference]: Without dead ends: 2928 [2020-01-16 18:06:13,222 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:06:13,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2020-01-16 18:06:13,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 1578. [2020-01-16 18:06:13,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:06:13,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7072 transitions. [2020-01-16 18:06:13,288 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7072 transitions. Word has length 28 [2020-01-16 18:06:13,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:13,289 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7072 transitions. [2020-01-16 18:06:13,289 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:13,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7072 transitions. [2020-01-16 18:06:13,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:13,291 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:13,291 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 18:06:13,291 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 18:06:13,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:13,291 INFO L82 PathProgramCache]: Analyzing trace with hash 840337450, now seen corresponding path program 246 times [2020-01-16 18:06:13,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:13,292 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640847272] [2020-01-16 18:06:13,292 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:13,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:13,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:06:13,837 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640847272] [2020-01-16 18:06:13,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:13,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:13,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759945200] [2020-01-16 18:06:13,838 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:13,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:13,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:13,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:13,838 INFO L87 Difference]: Start difference. First operand 1578 states and 7072 transitions. Second operand 11 states. [2020-01-16 18:06:13,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:13,999 INFO L93 Difference]: Finished difference Result 2948 states and 11720 transitions. [2020-01-16 18:06:14,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:14,000 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:14,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:14,007 INFO L225 Difference]: With dead ends: 2948 [2020-01-16 18:06:14,007 INFO L226 Difference]: Without dead ends: 2915 [2020-01-16 18:06:14,007 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:06:14,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2915 states. [2020-01-16 18:06:14,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2915 to 1565. [2020-01-16 18:06:14,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 18:06:14,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7043 transitions. [2020-01-16 18:06:14,074 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7043 transitions. Word has length 28 [2020-01-16 18:06:14,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:14,074 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7043 transitions. [2020-01-16 18:06:14,074 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:14,074 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7043 transitions. [2020-01-16 18:06:14,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:14,076 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:14,076 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:06:14,077 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 18:06:14,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:14,077 INFO L82 PathProgramCache]: Analyzing trace with hash 216894948, now seen corresponding path program 247 times [2020-01-16 18:06:14,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:14,077 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131933081] [2020-01-16 18:06:14,078 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:14,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:14,608 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 18:06:14,608 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131933081] [2020-01-16 18:06:14,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:14,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:14,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111026226] [2020-01-16 18:06:14,609 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:14,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:14,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:14,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:14,610 INFO L87 Difference]: Start difference. First operand 1565 states and 7043 transitions. Second operand 11 states. [2020-01-16 18:06:14,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:14,785 INFO L93 Difference]: Finished difference Result 2923 states and 11678 transitions. [2020-01-16 18:06:14,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:14,785 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:14,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:14,793 INFO L225 Difference]: With dead ends: 2923 [2020-01-16 18:06:14,793 INFO L226 Difference]: Without dead ends: 2908 [2020-01-16 18:06:14,793 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 18:06:14,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2020-01-16 18:06:14,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 1574. [2020-01-16 18:06:14,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:06:14,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7067 transitions. [2020-01-16 18:06:14,889 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7067 transitions. Word has length 28 [2020-01-16 18:06:14,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:14,889 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7067 transitions. [2020-01-16 18:06:14,889 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:14,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7067 transitions. [2020-01-16 18:06:14,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:14,892 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:14,893 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 18:06:14,893 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 18:06:14,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:14,893 INFO L82 PathProgramCache]: Analyzing trace with hash 961597446, now seen corresponding path program 248 times [2020-01-16 18:06:14,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:14,894 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705391437] [2020-01-16 18:06:14,894 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:14,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:15,426 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 18:06:15,426 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705391437] [2020-01-16 18:06:15,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:15,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:15,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734278733] [2020-01-16 18:06:15,427 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:15,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:15,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:15,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:15,428 INFO L87 Difference]: Start difference. First operand 1574 states and 7067 transitions. Second operand 11 states. [2020-01-16 18:06:15,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:15,636 INFO L93 Difference]: Finished difference Result 2924 states and 11675 transitions. [2020-01-16 18:06:15,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:15,638 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:15,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:15,647 INFO L225 Difference]: With dead ends: 2924 [2020-01-16 18:06:15,647 INFO L226 Difference]: Without dead ends: 2903 [2020-01-16 18:06:15,647 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:06:15,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2903 states. [2020-01-16 18:06:15,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2903 to 1569. [2020-01-16 18:06:15,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:06:15,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7054 transitions. [2020-01-16 18:06:15,727 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7054 transitions. Word has length 28 [2020-01-16 18:06:15,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:15,728 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7054 transitions. [2020-01-16 18:06:15,728 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:15,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7054 transitions. [2020-01-16 18:06:15,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:15,730 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:15,731 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:06:15,731 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 18:06:15,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:15,731 INFO L82 PathProgramCache]: Analyzing trace with hash -318334854, now seen corresponding path program 249 times [2020-01-16 18:06:15,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:15,731 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538717628] [2020-01-16 18:06:15,732 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:15,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:16,279 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 18:06:16,280 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538717628] [2020-01-16 18:06:16,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:16,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:16,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939666015] [2020-01-16 18:06:16,280 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:16,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:16,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:16,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:16,281 INFO L87 Difference]: Start difference. First operand 1569 states and 7054 transitions. Second operand 11 states. [2020-01-16 18:06:16,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:16,474 INFO L93 Difference]: Finished difference Result 2920 states and 11667 transitions. [2020-01-16 18:06:16,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:16,474 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:16,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:16,483 INFO L225 Difference]: With dead ends: 2920 [2020-01-16 18:06:16,483 INFO L226 Difference]: Without dead ends: 2905 [2020-01-16 18:06:16,483 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:06:16,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2905 states. [2020-01-16 18:06:16,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2905 to 1573. [2020-01-16 18:06:16,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:06:16,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7061 transitions. [2020-01-16 18:06:16,555 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7061 transitions. Word has length 28 [2020-01-16 18:06:16,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:16,555 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7061 transitions. [2020-01-16 18:06:16,555 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:16,555 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7061 transitions. [2020-01-16 18:06:16,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:16,558 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:16,558 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:06:16,558 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 18:06:16,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:16,558 INFO L82 PathProgramCache]: Analyzing trace with hash -145087162, now seen corresponding path program 250 times [2020-01-16 18:06:16,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:16,559 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845766923] [2020-01-16 18:06:16,559 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:16,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:17,088 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 18:06:17,088 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845766923] [2020-01-16 18:06:17,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:17,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:17,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147421965] [2020-01-16 18:06:17,089 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:17,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:17,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:17,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:17,089 INFO L87 Difference]: Start difference. First operand 1573 states and 7061 transitions. Second operand 11 states. [2020-01-16 18:06:17,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:17,278 INFO L93 Difference]: Finished difference Result 2919 states and 11661 transitions. [2020-01-16 18:06:17,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:17,278 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:17,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:17,286 INFO L225 Difference]: With dead ends: 2919 [2020-01-16 18:06:17,286 INFO L226 Difference]: Without dead ends: 2901 [2020-01-16 18:06:17,286 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 18:06:17,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2901 states. [2020-01-16 18:06:17,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2901 to 1569. [2020-01-16 18:06:17,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:06:17,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7050 transitions. [2020-01-16 18:06:17,354 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7050 transitions. Word has length 28 [2020-01-16 18:06:17,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:17,354 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7050 transitions. [2020-01-16 18:06:17,354 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:17,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7050 transitions. [2020-01-16 18:06:17,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:17,356 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:17,356 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:06:17,356 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 18:06:17,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:17,357 INFO L82 PathProgramCache]: Analyzing trace with hash 2037308602, now seen corresponding path program 251 times [2020-01-16 18:06:17,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:17,357 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001189810] [2020-01-16 18:06:17,357 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:17,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:17,886 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 18:06:17,887 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001189810] [2020-01-16 18:06:17,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:17,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:17,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91626787] [2020-01-16 18:06:17,887 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:17,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:17,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:17,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:17,888 INFO L87 Difference]: Start difference. First operand 1569 states and 7050 transitions. Second operand 11 states. [2020-01-16 18:06:18,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:18,150 INFO L93 Difference]: Finished difference Result 2922 states and 11667 transitions. [2020-01-16 18:06:18,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:18,151 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:18,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:18,158 INFO L225 Difference]: With dead ends: 2922 [2020-01-16 18:06:18,158 INFO L226 Difference]: Without dead ends: 2906 [2020-01-16 18:06:18,158 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 18:06:18,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2906 states. [2020-01-16 18:06:18,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2906 to 1573. [2020-01-16 18:06:18,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:06:18,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7057 transitions. [2020-01-16 18:06:18,226 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7057 transitions. Word has length 28 [2020-01-16 18:06:18,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:18,226 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7057 transitions. [2020-01-16 18:06:18,226 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:18,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7057 transitions. [2020-01-16 18:06:18,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:18,228 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:18,228 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:06:18,228 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 18:06:18,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:18,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1465853796, now seen corresponding path program 252 times [2020-01-16 18:06:18,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:18,229 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264667307] [2020-01-16 18:06:18,229 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:18,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:18,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:06:18,748 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264667307] [2020-01-16 18:06:18,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:18,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:18,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725645168] [2020-01-16 18:06:18,749 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:18,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:18,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:18,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:18,749 INFO L87 Difference]: Start difference. First operand 1573 states and 7057 transitions. Second operand 11 states. [2020-01-16 18:06:18,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:18,986 INFO L93 Difference]: Finished difference Result 2920 states and 11659 transitions. [2020-01-16 18:06:18,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:18,987 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:18,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:18,994 INFO L225 Difference]: With dead ends: 2920 [2020-01-16 18:06:18,994 INFO L226 Difference]: Without dead ends: 2898 [2020-01-16 18:06:18,994 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:06:19,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2898 states. [2020-01-16 18:06:19,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2898 to 1565. [2020-01-16 18:06:19,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 18:06:19,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7039 transitions. [2020-01-16 18:06:19,063 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7039 transitions. Word has length 28 [2020-01-16 18:06:19,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:19,063 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7039 transitions. [2020-01-16 18:06:19,063 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:19,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7039 transitions. [2020-01-16 18:06:19,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:19,066 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:19,066 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 18:06:19,066 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 18:06:19,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:19,066 INFO L82 PathProgramCache]: Analyzing trace with hash 227398052, now seen corresponding path program 253 times [2020-01-16 18:06:19,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:19,066 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652742650] [2020-01-16 18:06:19,066 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:19,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:19,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:06:19,603 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652742650] [2020-01-16 18:06:19,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:19,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:19,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985669079] [2020-01-16 18:06:19,603 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:19,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:19,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:19,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:19,604 INFO L87 Difference]: Start difference. First operand 1565 states and 7039 transitions. Second operand 11 states. [2020-01-16 18:06:19,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:19,861 INFO L93 Difference]: Finished difference Result 2935 states and 11697 transitions. [2020-01-16 18:06:19,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:19,861 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:19,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:19,869 INFO L225 Difference]: With dead ends: 2935 [2020-01-16 18:06:19,869 INFO L226 Difference]: Without dead ends: 2920 [2020-01-16 18:06:19,869 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 18:06:19,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2920 states. [2020-01-16 18:06:19,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2920 to 1576. [2020-01-16 18:06:19,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:06:19,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7068 transitions. [2020-01-16 18:06:19,937 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7068 transitions. Word has length 28 [2020-01-16 18:06:19,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:19,937 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7068 transitions. [2020-01-16 18:06:19,937 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:19,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7068 transitions. [2020-01-16 18:06:19,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:19,939 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:19,939 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 18:06:19,939 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 18:06:19,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:19,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1716803048, now seen corresponding path program 254 times [2020-01-16 18:06:19,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:19,940 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656882436] [2020-01-16 18:06:19,940 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:19,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:20,475 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 18:06:20,475 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656882436] [2020-01-16 18:06:20,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:20,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:20,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804480316] [2020-01-16 18:06:20,476 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:20,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:20,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:20,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:20,476 INFO L87 Difference]: Start difference. First operand 1576 states and 7068 transitions. Second operand 11 states. [2020-01-16 18:06:20,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:20,634 INFO L93 Difference]: Finished difference Result 2940 states and 11701 transitions. [2020-01-16 18:06:20,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:20,634 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:20,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:20,641 INFO L225 Difference]: With dead ends: 2940 [2020-01-16 18:06:20,642 INFO L226 Difference]: Without dead ends: 2914 [2020-01-16 18:06:20,642 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 18:06:20,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2914 states. [2020-01-16 18:06:20,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2914 to 1570. [2020-01-16 18:06:20,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:06:20,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7052 transitions. [2020-01-16 18:06:20,710 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7052 transitions. Word has length 28 [2020-01-16 18:06:20,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:20,710 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7052 transitions. [2020-01-16 18:06:20,710 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:20,710 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7052 transitions. [2020-01-16 18:06:20,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:20,713 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:20,713 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 18:06:20,713 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 18:06:20,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:20,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1918772708, now seen corresponding path program 255 times [2020-01-16 18:06:20,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:20,713 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772392165] [2020-01-16 18:06:20,713 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:20,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:21,240 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 18:06:21,240 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772392165] [2020-01-16 18:06:21,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:21,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:21,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106285963] [2020-01-16 18:06:21,240 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:21,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:21,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:21,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:21,241 INFO L87 Difference]: Start difference. First operand 1570 states and 7052 transitions. Second operand 11 states. [2020-01-16 18:06:21,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:21,472 INFO L93 Difference]: Finished difference Result 2927 states and 11676 transitions. [2020-01-16 18:06:21,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:21,473 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:21,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:21,481 INFO L225 Difference]: With dead ends: 2927 [2020-01-16 18:06:21,481 INFO L226 Difference]: Without dead ends: 2912 [2020-01-16 18:06:21,481 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:06:21,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2912 states. [2020-01-16 18:06:21,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2912 to 1574. [2020-01-16 18:06:21,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:06:21,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7059 transitions. [2020-01-16 18:06:21,548 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7059 transitions. Word has length 28 [2020-01-16 18:06:21,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:21,548 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7059 transitions. [2020-01-16 18:06:21,549 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:21,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7059 transitions. [2020-01-16 18:06:21,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:21,551 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:21,551 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 18:06:21,551 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 18:06:21,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:21,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1745525016, now seen corresponding path program 256 times [2020-01-16 18:06:21,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:21,551 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941495889] [2020-01-16 18:06:21,551 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:21,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:22,079 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 18:06:22,080 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941495889] [2020-01-16 18:06:22,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:22,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:22,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058561988] [2020-01-16 18:06:22,080 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:22,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:22,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:22,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:22,081 INFO L87 Difference]: Start difference. First operand 1574 states and 7059 transitions. Second operand 11 states. [2020-01-16 18:06:22,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:22,269 INFO L93 Difference]: Finished difference Result 2926 states and 11670 transitions. [2020-01-16 18:06:22,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:22,269 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:22,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:22,277 INFO L225 Difference]: With dead ends: 2926 [2020-01-16 18:06:22,277 INFO L226 Difference]: Without dead ends: 2908 [2020-01-16 18:06:22,277 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 18:06:22,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2020-01-16 18:06:22,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 1570. [2020-01-16 18:06:22,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:06:22,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7048 transitions. [2020-01-16 18:06:22,344 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7048 transitions. Word has length 28 [2020-01-16 18:06:22,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:22,344 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7048 transitions. [2020-01-16 18:06:22,344 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:22,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7048 transitions. [2020-01-16 18:06:22,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:22,346 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:22,346 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 18:06:22,346 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 18:06:22,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:22,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1502453092, now seen corresponding path program 257 times [2020-01-16 18:06:22,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:22,347 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067020147] [2020-01-16 18:06:22,347 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:22,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:22,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:06:22,878 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067020147] [2020-01-16 18:06:22,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:22,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:22,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064543059] [2020-01-16 18:06:22,879 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:22,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:22,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:22,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:22,879 INFO L87 Difference]: Start difference. First operand 1570 states and 7048 transitions. Second operand 11 states. [2020-01-16 18:06:23,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:23,040 INFO L93 Difference]: Finished difference Result 2938 states and 11692 transitions. [2020-01-16 18:06:23,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:23,041 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:23,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:23,048 INFO L225 Difference]: With dead ends: 2938 [2020-01-16 18:06:23,048 INFO L226 Difference]: Without dead ends: 2918 [2020-01-16 18:06:23,049 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 18:06:23,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2918 states. [2020-01-16 18:06:23,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2918 to 1575. [2020-01-16 18:06:23,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:06:23,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7056 transitions. [2020-01-16 18:06:23,116 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7056 transitions. Word has length 28 [2020-01-16 18:06:23,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:23,116 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7056 transitions. [2020-01-16 18:06:23,116 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:23,116 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7056 transitions. [2020-01-16 18:06:23,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:23,118 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:23,118 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:06:23,118 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 18:06:23,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:23,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1476356900, now seen corresponding path program 258 times [2020-01-16 18:06:23,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:23,119 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396493094] [2020-01-16 18:06:23,119 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:23,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:23,632 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 18:06:23,632 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396493094] [2020-01-16 18:06:23,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:23,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:23,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663916407] [2020-01-16 18:06:23,633 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:23,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:23,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:23,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:23,633 INFO L87 Difference]: Start difference. First operand 1575 states and 7056 transitions. Second operand 11 states. [2020-01-16 18:06:23,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:23,854 INFO L93 Difference]: Finished difference Result 2932 states and 11676 transitions. [2020-01-16 18:06:23,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:23,854 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:23,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:23,862 INFO L225 Difference]: With dead ends: 2932 [2020-01-16 18:06:23,862 INFO L226 Difference]: Without dead ends: 2908 [2020-01-16 18:06:23,862 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 18:06:23,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2020-01-16 18:06:23,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 1565. [2020-01-16 18:06:23,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 18:06:23,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7034 transitions. [2020-01-16 18:06:23,930 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7034 transitions. Word has length 28 [2020-01-16 18:06:23,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:23,930 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7034 transitions. [2020-01-16 18:06:23,930 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:23,930 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7034 transitions. [2020-01-16 18:06:23,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:23,933 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:23,933 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:06:23,933 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 18:06:23,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:23,933 INFO L82 PathProgramCache]: Analyzing trace with hash 982603654, now seen corresponding path program 259 times [2020-01-16 18:06:23,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:23,933 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606574324] [2020-01-16 18:06:23,933 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:23,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:24,452 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 18:06:24,452 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606574324] [2020-01-16 18:06:24,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:24,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:24,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487110751] [2020-01-16 18:06:24,453 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:24,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:24,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:24,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:24,453 INFO L87 Difference]: Start difference. First operand 1565 states and 7034 transitions. Second operand 11 states. [2020-01-16 18:06:24,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:24,640 INFO L93 Difference]: Finished difference Result 2940 states and 11704 transitions. [2020-01-16 18:06:24,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:24,641 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:24,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:24,647 INFO L225 Difference]: With dead ends: 2940 [2020-01-16 18:06:24,647 INFO L226 Difference]: Without dead ends: 2924 [2020-01-16 18:06:24,647 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:06:24,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2924 states. [2020-01-16 18:06:24,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2924 to 1577. [2020-01-16 18:06:24,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:06:24,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7065 transitions. [2020-01-16 18:06:24,714 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7065 transitions. Word has length 28 [2020-01-16 18:06:24,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:24,714 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7065 transitions. [2020-01-16 18:06:24,714 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:24,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7065 transitions. [2020-01-16 18:06:24,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:24,717 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:24,717 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:06:24,717 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 18:06:24,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:24,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1727306152, now seen corresponding path program 260 times [2020-01-16 18:06:24,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:24,717 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191289026] [2020-01-16 18:06:24,717 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:24,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:25,255 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 18:06:25,255 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191289026] [2020-01-16 18:06:25,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:25,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:25,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100230697] [2020-01-16 18:06:25,256 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:25,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:25,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:25,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:25,256 INFO L87 Difference]: Start difference. First operand 1577 states and 7065 transitions. Second operand 11 states. [2020-01-16 18:06:25,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:25,407 INFO L93 Difference]: Finished difference Result 2944 states and 11705 transitions. [2020-01-16 18:06:25,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:25,407 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:25,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:25,415 INFO L225 Difference]: With dead ends: 2944 [2020-01-16 18:06:25,415 INFO L226 Difference]: Without dead ends: 2917 [2020-01-16 18:06:25,415 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 18:06:25,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2917 states. [2020-01-16 18:06:25,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2917 to 1570. [2020-01-16 18:06:25,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:06:25,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7047 transitions. [2020-01-16 18:06:25,483 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7047 transitions. Word has length 28 [2020-01-16 18:06:25,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:25,483 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7047 transitions. [2020-01-16 18:06:25,484 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:25,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7047 transitions. [2020-01-16 18:06:25,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:25,486 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:25,486 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:06:25,486 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 18:06:25,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:25,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1163567106, now seen corresponding path program 261 times [2020-01-16 18:06:25,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:25,486 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279699141] [2020-01-16 18:06:25,487 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:25,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:26,019 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 18:06:26,020 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279699141] [2020-01-16 18:06:26,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:26,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:26,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746871079] [2020-01-16 18:06:26,020 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:26,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:26,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:26,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:26,021 INFO L87 Difference]: Start difference. First operand 1570 states and 7047 transitions. Second operand 11 states. [2020-01-16 18:06:26,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:26,200 INFO L93 Difference]: Finished difference Result 2931 states and 11680 transitions. [2020-01-16 18:06:26,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:26,200 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:26,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:26,208 INFO L225 Difference]: With dead ends: 2931 [2020-01-16 18:06:26,209 INFO L226 Difference]: Without dead ends: 2915 [2020-01-16 18:06:26,209 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:06:26,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2915 states. [2020-01-16 18:06:26,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2915 to 1574. [2020-01-16 18:06:26,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:06:26,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7054 transitions. [2020-01-16 18:06:26,277 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7054 transitions. Word has length 28 [2020-01-16 18:06:26,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:26,277 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7054 transitions. [2020-01-16 18:06:26,278 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:26,278 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7054 transitions. [2020-01-16 18:06:26,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:26,280 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:26,280 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:06:26,280 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 18:06:26,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:26,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1735021912, now seen corresponding path program 262 times [2020-01-16 18:06:26,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:26,280 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553787220] [2020-01-16 18:06:26,281 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:26,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:26,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:06:26,824 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553787220] [2020-01-16 18:06:26,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:26,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:26,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204705972] [2020-01-16 18:06:26,824 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:26,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:26,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:26,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:26,825 INFO L87 Difference]: Start difference. First operand 1574 states and 7054 transitions. Second operand 11 states. [2020-01-16 18:06:27,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:27,011 INFO L93 Difference]: Finished difference Result 2929 states and 11672 transitions. [2020-01-16 18:06:27,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:27,012 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:27,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:27,019 INFO L225 Difference]: With dead ends: 2929 [2020-01-16 18:06:27,020 INFO L226 Difference]: Without dead ends: 2911 [2020-01-16 18:06:27,020 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 18:06:27,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2020-01-16 18:06:27,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 1570. [2020-01-16 18:06:27,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:06:27,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7043 transitions. [2020-01-16 18:06:27,087 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7043 transitions. Word has length 28 [2020-01-16 18:06:27,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:27,087 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7043 transitions. [2020-01-16 18:06:27,087 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:27,087 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7043 transitions. [2020-01-16 18:06:27,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:27,089 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:27,089 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 18:06:27,090 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 18:06:27,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:27,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1192076350, now seen corresponding path program 263 times [2020-01-16 18:06:27,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:27,090 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865389109] [2020-01-16 18:06:27,090 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:27,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:27,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:06:27,600 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865389109] [2020-01-16 18:06:27,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:27,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:27,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034366952] [2020-01-16 18:06:27,601 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:27,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:27,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:27,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:27,601 INFO L87 Difference]: Start difference. First operand 1570 states and 7043 transitions. Second operand 11 states. [2020-01-16 18:06:27,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:27,763 INFO L93 Difference]: Finished difference Result 2940 states and 11692 transitions. [2020-01-16 18:06:27,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:27,764 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:27,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:27,771 INFO L225 Difference]: With dead ends: 2940 [2020-01-16 18:06:27,771 INFO L226 Difference]: Without dead ends: 2920 [2020-01-16 18:06:27,772 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 18:06:27,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2920 states. [2020-01-16 18:06:27,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2920 to 1575. [2020-01-16 18:06:27,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:06:27,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7051 transitions. [2020-01-16 18:06:27,838 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7051 transitions. Word has length 28 [2020-01-16 18:06:27,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:27,838 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7051 transitions. [2020-01-16 18:06:27,838 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:27,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7051 transitions. [2020-01-16 18:06:27,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:27,841 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:27,841 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 18:06:27,841 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 18:06:27,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:27,841 INFO L82 PathProgramCache]: Analyzing trace with hash -124080954, now seen corresponding path program 264 times [2020-01-16 18:06:27,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:27,841 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405336465] [2020-01-16 18:06:27,841 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:27,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:28,357 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 18:06:28,357 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405336465] [2020-01-16 18:06:28,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:28,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:28,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961185012] [2020-01-16 18:06:28,358 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:28,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:28,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:28,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:28,358 INFO L87 Difference]: Start difference. First operand 1575 states and 7051 transitions. Second operand 11 states. [2020-01-16 18:06:28,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:28,544 INFO L93 Difference]: Finished difference Result 2934 states and 11676 transitions. [2020-01-16 18:06:28,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:28,544 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:28,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:28,551 INFO L225 Difference]: With dead ends: 2934 [2020-01-16 18:06:28,551 INFO L226 Difference]: Without dead ends: 2905 [2020-01-16 18:06:28,551 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 18:06:28,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2905 states. [2020-01-16 18:06:28,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2905 to 1560. [2020-01-16 18:06:28,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1560 states. [2020-01-16 18:06:28,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1560 states to 1560 states and 7020 transitions. [2020-01-16 18:06:28,619 INFO L78 Accepts]: Start accepts. Automaton has 1560 states and 7020 transitions. Word has length 28 [2020-01-16 18:06:28,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:28,619 INFO L478 AbstractCegarLoop]: Abstraction has 1560 states and 7020 transitions. [2020-01-16 18:06:28,619 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:28,619 INFO L276 IsEmpty]: Start isEmpty. Operand 1560 states and 7020 transitions. [2020-01-16 18:06:28,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:28,621 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:28,621 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:06:28,621 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 18:06:28,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:28,622 INFO L82 PathProgramCache]: Analyzing trace with hash 155271406, now seen corresponding path program 265 times [2020-01-16 18:06:28,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:28,622 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977030598] [2020-01-16 18:06:28,622 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:28,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:29,151 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 18:06:29,152 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977030598] [2020-01-16 18:06:29,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:29,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:29,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515257975] [2020-01-16 18:06:29,152 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:29,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:29,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:29,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:29,153 INFO L87 Difference]: Start difference. First operand 1560 states and 7020 transitions. Second operand 11 states. [2020-01-16 18:06:29,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:29,334 INFO L93 Difference]: Finished difference Result 2950 states and 11754 transitions. [2020-01-16 18:06:29,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:29,334 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:29,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:29,341 INFO L225 Difference]: With dead ends: 2950 [2020-01-16 18:06:29,341 INFO L226 Difference]: Without dead ends: 2935 [2020-01-16 18:06:29,341 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 18:06:29,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2935 states. [2020-01-16 18:06:29,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2935 to 1577. [2020-01-16 18:06:29,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:06:29,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7079 transitions. [2020-01-16 18:06:29,408 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7079 transitions. Word has length 28 [2020-01-16 18:06:29,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:29,408 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7079 transitions. [2020-01-16 18:06:29,408 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:29,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7079 transitions. [2020-01-16 18:06:29,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:29,410 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:29,410 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 18:06:29,410 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 18:06:29,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:29,411 INFO L82 PathProgramCache]: Analyzing trace with hash 899973904, now seen corresponding path program 266 times [2020-01-16 18:06:29,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:29,411 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666647260] [2020-01-16 18:06:29,411 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:29,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:29,946 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 18:06:29,946 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666647260] [2020-01-16 18:06:29,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:29,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:29,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990241765] [2020-01-16 18:06:29,947 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:29,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:29,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:29,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:29,947 INFO L87 Difference]: Start difference. First operand 1577 states and 7079 transitions. Second operand 11 states. [2020-01-16 18:06:30,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:30,169 INFO L93 Difference]: Finished difference Result 2951 states and 11751 transitions. [2020-01-16 18:06:30,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:30,170 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:30,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:30,176 INFO L225 Difference]: With dead ends: 2951 [2020-01-16 18:06:30,176 INFO L226 Difference]: Without dead ends: 2930 [2020-01-16 18:06:30,176 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:06:30,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2020-01-16 18:06:30,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1572. [2020-01-16 18:06:30,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:06:30,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7065 transitions. [2020-01-16 18:06:30,243 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7065 transitions. Word has length 28 [2020-01-16 18:06:30,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:30,243 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7065 transitions. [2020-01-16 18:06:30,243 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:30,243 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7065 transitions. [2020-01-16 18:06:30,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:30,245 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:30,246 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 18:06:30,246 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 18:06:30,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:30,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1766212364, now seen corresponding path program 267 times [2020-01-16 18:06:30,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:30,246 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732037059] [2020-01-16 18:06:30,246 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:30,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:30,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:06:30,780 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732037059] [2020-01-16 18:06:30,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:30,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:30,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310187982] [2020-01-16 18:06:30,781 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:30,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:30,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:30,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:30,781 INFO L87 Difference]: Start difference. First operand 1572 states and 7065 transitions. Second operand 11 states. [2020-01-16 18:06:31,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:31,015 INFO L93 Difference]: Finished difference Result 2955 states and 11758 transitions. [2020-01-16 18:06:31,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:31,015 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:31,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:31,022 INFO L225 Difference]: With dead ends: 2955 [2020-01-16 18:06:31,023 INFO L226 Difference]: Without dead ends: 2940 [2020-01-16 18:06:31,023 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 18:06:31,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2940 states. [2020-01-16 18:06:31,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2940 to 1578. [2020-01-16 18:06:31,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:06:31,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7076 transitions. [2020-01-16 18:06:31,089 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7076 transitions. Word has length 28 [2020-01-16 18:06:31,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:31,089 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7076 transitions. [2020-01-16 18:06:31,090 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:31,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7076 transitions. [2020-01-16 18:06:31,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:31,092 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:31,092 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 18:06:31,092 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 18:06:31,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:31,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1039349936, now seen corresponding path program 268 times [2020-01-16 18:06:31,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:31,092 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690148181] [2020-01-16 18:06:31,093 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:31,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:31,622 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 18:06:31,622 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690148181] [2020-01-16 18:06:31,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:31,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:31,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216532146] [2020-01-16 18:06:31,622 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:31,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:31,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:31,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:31,623 INFO L87 Difference]: Start difference. First operand 1578 states and 7076 transitions. Second operand 11 states. [2020-01-16 18:06:31,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:31,784 INFO L93 Difference]: Finished difference Result 2960 states and 11762 transitions. [2020-01-16 18:06:31,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:31,784 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:31,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:31,792 INFO L225 Difference]: With dead ends: 2960 [2020-01-16 18:06:31,792 INFO L226 Difference]: Without dead ends: 2934 [2020-01-16 18:06:31,792 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:06:31,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2934 states. [2020-01-16 18:06:31,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2934 to 1572. [2020-01-16 18:06:31,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:06:31,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7059 transitions. [2020-01-16 18:06:31,859 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7059 transitions. Word has length 28 [2020-01-16 18:06:31,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:31,859 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7059 transitions. [2020-01-16 18:06:31,859 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:31,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7059 transitions. [2020-01-16 18:06:31,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:31,861 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:31,861 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 18:06:31,861 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 18:06:31,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:31,862 INFO L82 PathProgramCache]: Analyzing trace with hash -173111476, now seen corresponding path program 269 times [2020-01-16 18:06:31,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:31,862 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490294291] [2020-01-16 18:06:31,862 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:31,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:32,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:06:32,394 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490294291] [2020-01-16 18:06:32,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:32,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:32,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831294161] [2020-01-16 18:06:32,395 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:32,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:32,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:32,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:32,396 INFO L87 Difference]: Start difference. First operand 1572 states and 7059 transitions. Second operand 11 states. [2020-01-16 18:06:32,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:32,590 INFO L93 Difference]: Finished difference Result 2958 states and 11759 transitions. [2020-01-16 18:06:32,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:32,591 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:32,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:32,599 INFO L225 Difference]: With dead ends: 2958 [2020-01-16 18:06:32,599 INFO L226 Difference]: Without dead ends: 2942 [2020-01-16 18:06:32,599 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:06:32,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2020-01-16 18:06:32,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 1579. [2020-01-16 18:06:32,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:06:32,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7072 transitions. [2020-01-16 18:06:32,667 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7072 transitions. Word has length 28 [2020-01-16 18:06:32,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:32,668 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7072 transitions. [2020-01-16 18:06:32,668 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:32,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7072 transitions. [2020-01-16 18:06:32,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:32,670 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:32,670 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 18:06:32,670 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 18:06:32,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:32,670 INFO L82 PathProgramCache]: Analyzing trace with hash 571591022, now seen corresponding path program 270 times [2020-01-16 18:06:32,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:32,671 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570474008] [2020-01-16 18:06:32,671 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:32,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:33,189 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 18:06:33,190 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570474008] [2020-01-16 18:06:33,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:33,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:33,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732359961] [2020-01-16 18:06:33,190 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:33,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:33,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:33,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:33,191 INFO L87 Difference]: Start difference. First operand 1579 states and 7072 transitions. Second operand 11 states. [2020-01-16 18:06:33,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:33,367 INFO L93 Difference]: Finished difference Result 2962 states and 11760 transitions. [2020-01-16 18:06:33,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:33,368 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:33,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:33,377 INFO L225 Difference]: With dead ends: 2962 [2020-01-16 18:06:33,377 INFO L226 Difference]: Without dead ends: 2929 [2020-01-16 18:06:33,377 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:06:33,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2929 states. [2020-01-16 18:06:33,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2929 to 1566. [2020-01-16 18:06:33,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1566 states. [2020-01-16 18:06:33,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 7042 transitions. [2020-01-16 18:06:33,449 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 7042 transitions. Word has length 28 [2020-01-16 18:06:33,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:33,450 INFO L478 AbstractCegarLoop]: Abstraction has 1566 states and 7042 transitions. [2020-01-16 18:06:33,450 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:33,450 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 7042 transitions. [2020-01-16 18:06:33,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:33,452 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:33,452 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:06:33,453 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 18:06:33,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:33,453 INFO L82 PathProgramCache]: Analyzing trace with hash -669941720, now seen corresponding path program 271 times [2020-01-16 18:06:33,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:33,453 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928110833] [2020-01-16 18:06:33,453 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:33,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:34,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:06:34,003 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928110833] [2020-01-16 18:06:34,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:34,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:34,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465284690] [2020-01-16 18:06:34,003 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:34,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:34,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:34,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:34,003 INFO L87 Difference]: Start difference. First operand 1566 states and 7042 transitions. Second operand 11 states. [2020-01-16 18:06:34,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:34,213 INFO L93 Difference]: Finished difference Result 2944 states and 11736 transitions. [2020-01-16 18:06:34,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:34,214 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:34,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:34,221 INFO L225 Difference]: With dead ends: 2944 [2020-01-16 18:06:34,221 INFO L226 Difference]: Without dead ends: 2929 [2020-01-16 18:06:34,221 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 18:06:34,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2929 states. [2020-01-16 18:06:34,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2929 to 1576. [2020-01-16 18:06:34,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:06:34,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7070 transitions. [2020-01-16 18:06:34,288 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7070 transitions. Word has length 28 [2020-01-16 18:06:34,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:34,288 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7070 transitions. [2020-01-16 18:06:34,288 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:34,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7070 transitions. [2020-01-16 18:06:34,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:34,290 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:34,290 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 18:06:34,291 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 18:06:34,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:34,291 INFO L82 PathProgramCache]: Analyzing trace with hash 74760778, now seen corresponding path program 272 times [2020-01-16 18:06:34,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:34,291 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398403936] [2020-01-16 18:06:34,291 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:34,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:34,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:06:34,818 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398403936] [2020-01-16 18:06:34,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:34,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:34,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217019052] [2020-01-16 18:06:34,820 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:34,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:34,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:34,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:34,820 INFO L87 Difference]: Start difference. First operand 1576 states and 7070 transitions. Second operand 11 states. [2020-01-16 18:06:35,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:35,011 INFO L93 Difference]: Finished difference Result 2945 states and 11733 transitions. [2020-01-16 18:06:35,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:35,011 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:35,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:35,018 INFO L225 Difference]: With dead ends: 2945 [2020-01-16 18:06:35,018 INFO L226 Difference]: Without dead ends: 2924 [2020-01-16 18:06:35,018 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 18:06:35,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2924 states. [2020-01-16 18:06:35,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2924 to 1571. [2020-01-16 18:06:35,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:06:35,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7056 transitions. [2020-01-16 18:06:35,085 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7056 transitions. Word has length 28 [2020-01-16 18:06:35,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:35,085 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7056 transitions. [2020-01-16 18:06:35,085 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:35,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7056 transitions. [2020-01-16 18:06:35,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:35,087 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:35,088 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:06:35,088 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 18:06:35,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:35,088 INFO L82 PathProgramCache]: Analyzing trace with hash 2016710394, now seen corresponding path program 273 times [2020-01-16 18:06:35,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:35,088 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281972179] [2020-01-16 18:06:35,088 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:35,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:35,614 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 18:06:35,614 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281972179] [2020-01-16 18:06:35,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:35,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:35,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129048729] [2020-01-16 18:06:35,615 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:35,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:35,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:35,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:35,615 INFO L87 Difference]: Start difference. First operand 1571 states and 7056 transitions. Second operand 11 states. [2020-01-16 18:06:35,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:35,834 INFO L93 Difference]: Finished difference Result 2945 states and 11733 transitions. [2020-01-16 18:06:35,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:35,834 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:35,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:35,842 INFO L225 Difference]: With dead ends: 2945 [2020-01-16 18:06:35,842 INFO L226 Difference]: Without dead ends: 2930 [2020-01-16 18:06:35,842 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:06:35,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2020-01-16 18:06:35,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1576. [2020-01-16 18:06:35,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:06:35,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7065 transitions. [2020-01-16 18:06:35,911 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7065 transitions. Word has length 28 [2020-01-16 18:06:35,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:35,912 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7065 transitions. [2020-01-16 18:06:35,912 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:35,912 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7065 transitions. [2020-01-16 18:06:35,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:35,914 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:35,914 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 18:06:35,914 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 18:06:35,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:35,914 INFO L82 PathProgramCache]: Analyzing trace with hash -615604214, now seen corresponding path program 274 times [2020-01-16 18:06:35,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:35,914 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573642089] [2020-01-16 18:06:35,915 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:35,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:36,350 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 29 [2020-01-16 18:06:36,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:06:36,469 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573642089] [2020-01-16 18:06:36,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:36,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:36,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420200765] [2020-01-16 18:06:36,470 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:36,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:36,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:36,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:36,470 INFO L87 Difference]: Start difference. First operand 1576 states and 7065 transitions. Second operand 11 states. [2020-01-16 18:06:36,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:36,659 INFO L93 Difference]: Finished difference Result 2947 states and 11732 transitions. [2020-01-16 18:06:36,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:36,660 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:36,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:36,667 INFO L225 Difference]: With dead ends: 2947 [2020-01-16 18:06:36,667 INFO L226 Difference]: Without dead ends: 2925 [2020-01-16 18:06:36,667 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 18:06:36,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2925 states. [2020-01-16 18:06:36,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2925 to 1571. [2020-01-16 18:06:36,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:06:36,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7051 transitions. [2020-01-16 18:06:36,734 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7051 transitions. Word has length 28 [2020-01-16 18:06:36,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:36,734 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7051 transitions. [2020-01-16 18:06:36,734 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:36,734 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7051 transitions. [2020-01-16 18:06:36,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:36,736 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:36,736 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:06:36,736 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 18:06:36,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:36,737 INFO L82 PathProgramCache]: Analyzing trace with hash 77386554, now seen corresponding path program 275 times [2020-01-16 18:06:36,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:36,737 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348796688] [2020-01-16 18:06:36,737 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:36,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:37,272 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 18:06:37,272 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348796688] [2020-01-16 18:06:37,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:37,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:37,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557247783] [2020-01-16 18:06:37,273 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:37,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:37,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:37,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:37,273 INFO L87 Difference]: Start difference. First operand 1571 states and 7051 transitions. Second operand 11 states. [2020-01-16 18:06:37,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:37,487 INFO L93 Difference]: Finished difference Result 2948 states and 11735 transitions. [2020-01-16 18:06:37,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:37,488 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:37,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:37,495 INFO L225 Difference]: With dead ends: 2948 [2020-01-16 18:06:37,496 INFO L226 Difference]: Without dead ends: 2932 [2020-01-16 18:06:37,496 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:06:37,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2932 states. [2020-01-16 18:06:37,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2932 to 1577. [2020-01-16 18:06:37,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:06:37,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7062 transitions. [2020-01-16 18:06:37,565 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7062 transitions. Word has length 28 [2020-01-16 18:06:37,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:37,565 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7062 transitions. [2020-01-16 18:06:37,565 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:37,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7062 transitions. [2020-01-16 18:06:37,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:37,568 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:37,568 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 18:06:37,568 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 18:06:37,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:37,568 INFO L82 PathProgramCache]: Analyzing trace with hash 995336744, now seen corresponding path program 276 times [2020-01-16 18:06:37,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:37,568 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994744811] [2020-01-16 18:06:37,568 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:37,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:38,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:06:38,106 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994744811] [2020-01-16 18:06:38,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:38,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:38,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39646530] [2020-01-16 18:06:38,106 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:38,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:38,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:38,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:38,107 INFO L87 Difference]: Start difference. First operand 1577 states and 7062 transitions. Second operand 11 states. [2020-01-16 18:06:38,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:38,350 INFO L93 Difference]: Finished difference Result 2949 states and 11731 transitions. [2020-01-16 18:06:38,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:38,351 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:38,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:38,358 INFO L225 Difference]: With dead ends: 2949 [2020-01-16 18:06:38,358 INFO L226 Difference]: Without dead ends: 2921 [2020-01-16 18:06:38,359 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 18:06:38,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2020-01-16 18:06:38,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 1566. [2020-01-16 18:06:38,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1566 states. [2020-01-16 18:06:38,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 7037 transitions. [2020-01-16 18:06:38,426 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 7037 transitions. Word has length 28 [2020-01-16 18:06:38,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:38,426 INFO L478 AbstractCegarLoop]: Abstraction has 1566 states and 7037 transitions. [2020-01-16 18:06:38,426 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:38,426 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 7037 transitions. [2020-01-16 18:06:38,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:38,429 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:38,429 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:06:38,429 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 18:06:38,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:38,429 INFO L82 PathProgramCache]: Analyzing trace with hash -659438616, now seen corresponding path program 277 times [2020-01-16 18:06:38,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:38,429 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173724753] [2020-01-16 18:06:38,429 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:38,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:38,955 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 18:06:38,955 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173724753] [2020-01-16 18:06:38,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:38,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:38,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401893332] [2020-01-16 18:06:38,956 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:38,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:38,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:38,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:38,956 INFO L87 Difference]: Start difference. First operand 1566 states and 7037 transitions. Second operand 11 states. [2020-01-16 18:06:39,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:39,162 INFO L93 Difference]: Finished difference Result 2957 states and 11757 transitions. [2020-01-16 18:06:39,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:39,163 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:39,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:39,170 INFO L225 Difference]: With dead ends: 2957 [2020-01-16 18:06:39,171 INFO L226 Difference]: Without dead ends: 2942 [2020-01-16 18:06:39,171 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 18:06:39,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2020-01-16 18:06:39,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 1578. [2020-01-16 18:06:39,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:06:39,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7070 transitions. [2020-01-16 18:06:39,239 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7070 transitions. Word has length 28 [2020-01-16 18:06:39,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:39,239 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7070 transitions. [2020-01-16 18:06:39,239 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:39,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7070 transitions. [2020-01-16 18:06:39,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:39,241 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:39,241 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 18:06:39,241 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 18:06:39,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:39,242 INFO L82 PathProgramCache]: Analyzing trace with hash 829966380, now seen corresponding path program 278 times [2020-01-16 18:06:39,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:39,242 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156819595] [2020-01-16 18:06:39,242 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:39,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:39,767 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 18:06:39,768 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156819595] [2020-01-16 18:06:39,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:39,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:39,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498862804] [2020-01-16 18:06:39,768 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:39,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:39,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:39,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:39,769 INFO L87 Difference]: Start difference. First operand 1578 states and 7070 transitions. Second operand 11 states. [2020-01-16 18:06:39,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:39,976 INFO L93 Difference]: Finished difference Result 2962 states and 11761 transitions. [2020-01-16 18:06:39,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:39,977 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:39,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:39,983 INFO L225 Difference]: With dead ends: 2962 [2020-01-16 18:06:39,983 INFO L226 Difference]: Without dead ends: 2936 [2020-01-16 18:06:39,984 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 18:06:40,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2936 states. [2020-01-16 18:06:40,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2936 to 1572. [2020-01-16 18:06:40,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:06:40,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7053 transitions. [2020-01-16 18:06:40,053 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7053 transitions. Word has length 28 [2020-01-16 18:06:40,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:40,053 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7053 transitions. [2020-01-16 18:06:40,053 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:40,053 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7053 transitions. [2020-01-16 18:06:40,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:40,055 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:40,055 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:06:40,055 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 18:06:40,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:40,056 INFO L82 PathProgramCache]: Analyzing trace with hash 416272540, now seen corresponding path program 279 times [2020-01-16 18:06:40,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:40,056 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190340406] [2020-01-16 18:06:40,056 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:40,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:40,582 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 18:06:40,582 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190340406] [2020-01-16 18:06:40,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:40,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:40,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474367943] [2020-01-16 18:06:40,583 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:40,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:40,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:40,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:40,583 INFO L87 Difference]: Start difference. First operand 1572 states and 7053 transitions. Second operand 11 states. [2020-01-16 18:06:40,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:40,767 INFO L93 Difference]: Finished difference Result 2953 states and 11744 transitions. [2020-01-16 18:06:40,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:40,768 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:40,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:40,775 INFO L225 Difference]: With dead ends: 2953 [2020-01-16 18:06:40,776 INFO L226 Difference]: Without dead ends: 2938 [2020-01-16 18:06:40,776 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 18:06:40,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2020-01-16 18:06:40,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 1577. [2020-01-16 18:06:40,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:06:40,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7062 transitions. [2020-01-16 18:06:40,844 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7062 transitions. Word has length 28 [2020-01-16 18:06:40,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:40,844 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7062 transitions. [2020-01-16 18:06:40,844 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:40,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7062 transitions. [2020-01-16 18:06:40,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:40,847 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:40,847 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:06:40,847 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 18:06:40,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:40,847 INFO L82 PathProgramCache]: Analyzing trace with hash 2078925228, now seen corresponding path program 280 times [2020-01-16 18:06:40,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:40,847 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779331230] [2020-01-16 18:06:40,847 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:40,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:41,369 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 18:06:41,369 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779331230] [2020-01-16 18:06:41,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:41,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:41,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361983448] [2020-01-16 18:06:41,369 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:41,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:41,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:41,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:41,370 INFO L87 Difference]: Start difference. First operand 1577 states and 7062 transitions. Second operand 11 states. [2020-01-16 18:06:41,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:41,597 INFO L93 Difference]: Finished difference Result 2955 states and 11743 transitions. [2020-01-16 18:06:41,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:41,598 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:41,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:41,605 INFO L225 Difference]: With dead ends: 2955 [2020-01-16 18:06:41,605 INFO L226 Difference]: Without dead ends: 2933 [2020-01-16 18:06:41,605 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 18:06:41,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2933 states. [2020-01-16 18:06:41,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2933 to 1572. [2020-01-16 18:06:41,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:06:41,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7048 transitions. [2020-01-16 18:06:41,672 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7048 transitions. Word has length 28 [2020-01-16 18:06:41,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:41,672 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7048 transitions. [2020-01-16 18:06:41,672 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:41,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7048 transitions. [2020-01-16 18:06:41,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:41,674 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:41,674 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 18:06:41,674 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 18:06:41,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:41,674 INFO L82 PathProgramCache]: Analyzing trace with hash 832592156, now seen corresponding path program 281 times [2020-01-16 18:06:41,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:41,675 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25285610] [2020-01-16 18:06:41,675 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:41,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:42,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:06:42,228 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25285610] [2020-01-16 18:06:42,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:42,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:42,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846712732] [2020-01-16 18:06:42,228 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:42,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:42,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:42,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:42,228 INFO L87 Difference]: Start difference. First operand 1572 states and 7048 transitions. Second operand 11 states. [2020-01-16 18:06:42,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:42,422 INFO L93 Difference]: Finished difference Result 2966 states and 11765 transitions. [2020-01-16 18:06:42,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:42,422 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:42,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:42,430 INFO L225 Difference]: With dead ends: 2966 [2020-01-16 18:06:42,430 INFO L226 Difference]: Without dead ends: 2946 [2020-01-16 18:06:42,430 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:06:42,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2946 states. [2020-01-16 18:06:42,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2946 to 1580. [2020-01-16 18:06:42,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:06:42,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7062 transitions. [2020-01-16 18:06:42,499 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7062 transitions. Word has length 28 [2020-01-16 18:06:42,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:42,499 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7062 transitions. [2020-01-16 18:06:42,499 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:42,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7062 transitions. [2020-01-16 18:06:42,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:42,502 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:42,502 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:06:42,502 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 18:06:42,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:42,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1005839848, now seen corresponding path program 282 times [2020-01-16 18:06:42,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:42,502 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167844064] [2020-01-16 18:06:42,502 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:43,036 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 18:06:43,036 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167844064] [2020-01-16 18:06:43,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:43,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:43,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533505117] [2020-01-16 18:06:43,037 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:43,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:43,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:43,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:43,037 INFO L87 Difference]: Start difference. First operand 1580 states and 7062 transitions. Second operand 11 states. [2020-01-16 18:06:43,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:43,218 INFO L93 Difference]: Finished difference Result 2963 states and 11752 transitions. [2020-01-16 18:06:43,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:43,219 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:43,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:43,226 INFO L225 Difference]: With dead ends: 2963 [2020-01-16 18:06:43,226 INFO L226 Difference]: Without dead ends: 2932 [2020-01-16 18:06:43,226 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 18:06:43,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2932 states. [2020-01-16 18:06:43,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2932 to 1566. [2020-01-16 18:06:43,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1566 states. [2020-01-16 18:06:43,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 7031 transitions. [2020-01-16 18:06:43,293 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 7031 transitions. Word has length 28 [2020-01-16 18:06:43,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:43,293 INFO L478 AbstractCegarLoop]: Abstraction has 1566 states and 7031 transitions. [2020-01-16 18:06:43,293 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:43,293 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 7031 transitions. [2020-01-16 18:06:43,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:43,295 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:43,295 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:06:43,295 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 18:06:43,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:43,296 INFO L82 PathProgramCache]: Analyzing trace with hash 95766986, now seen corresponding path program 283 times [2020-01-16 18:06:43,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:43,296 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334567325] [2020-01-16 18:06:43,296 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:43,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:43,829 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 18:06:43,830 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334567325] [2020-01-16 18:06:43,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:43,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:43,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124495827] [2020-01-16 18:06:43,830 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:43,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:43,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:43,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:43,831 INFO L87 Difference]: Start difference. First operand 1566 states and 7031 transitions. Second operand 11 states. [2020-01-16 18:06:44,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:44,037 INFO L93 Difference]: Finished difference Result 2964 states and 11770 transitions. [2020-01-16 18:06:44,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:44,037 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:44,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:44,044 INFO L225 Difference]: With dead ends: 2964 [2020-01-16 18:06:44,045 INFO L226 Difference]: Without dead ends: 2948 [2020-01-16 18:06:44,045 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:06:44,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2948 states. [2020-01-16 18:06:44,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2948 to 1580. [2020-01-16 18:06:44,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:06:44,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7070 transitions. [2020-01-16 18:06:44,114 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7070 transitions. Word has length 28 [2020-01-16 18:06:44,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:44,114 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7070 transitions. [2020-01-16 18:06:44,114 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:44,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7070 transitions. [2020-01-16 18:06:44,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:44,116 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:44,116 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 18:06:44,116 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 18:06:44,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:44,116 INFO L82 PathProgramCache]: Analyzing trace with hash 840469484, now seen corresponding path program 284 times [2020-01-16 18:06:44,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:44,117 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861468464] [2020-01-16 18:06:44,117 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:44,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:44,643 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 18:06:44,644 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861468464] [2020-01-16 18:06:44,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:44,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:44,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910713018] [2020-01-16 18:06:44,644 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:44,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:44,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:44,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:44,645 INFO L87 Difference]: Start difference. First operand 1580 states and 7070 transitions. Second operand 11 states. [2020-01-16 18:06:44,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:44,834 INFO L93 Difference]: Finished difference Result 2968 states and 11771 transitions. [2020-01-16 18:06:44,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:44,834 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:44,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:44,841 INFO L225 Difference]: With dead ends: 2968 [2020-01-16 18:06:44,841 INFO L226 Difference]: Without dead ends: 2941 [2020-01-16 18:06:44,841 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:06:44,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2941 states. [2020-01-16 18:06:44,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2941 to 1573. [2020-01-16 18:06:44,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:06:44,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7050 transitions. [2020-01-16 18:06:44,908 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7050 transitions. Word has length 28 [2020-01-16 18:06:44,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:44,909 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7050 transitions. [2020-01-16 18:06:44,909 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:44,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7050 transitions. [2020-01-16 18:06:44,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:44,911 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:44,911 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:06:44,911 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 18:06:44,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:44,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1171478142, now seen corresponding path program 285 times [2020-01-16 18:06:44,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:44,912 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890608521] [2020-01-16 18:06:44,912 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:44,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:45,444 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 18:06:45,445 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890608521] [2020-01-16 18:06:45,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:45,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:45,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297889432] [2020-01-16 18:06:45,445 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:45,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:45,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:45,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:45,446 INFO L87 Difference]: Start difference. First operand 1573 states and 7050 transitions. Second operand 11 states. [2020-01-16 18:06:45,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:45,651 INFO L93 Difference]: Finished difference Result 2960 states and 11756 transitions. [2020-01-16 18:06:45,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:45,651 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:45,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:45,659 INFO L225 Difference]: With dead ends: 2960 [2020-01-16 18:06:45,659 INFO L226 Difference]: Without dead ends: 2944 [2020-01-16 18:06:45,659 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:06:45,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2944 states. [2020-01-16 18:06:45,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2944 to 1579. [2020-01-16 18:06:45,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:06:45,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7061 transitions. [2020-01-16 18:06:45,728 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7061 transitions. Word has length 28 [2020-01-16 18:06:45,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:45,728 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7061 transitions. [2020-01-16 18:06:45,728 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:45,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7061 transitions. [2020-01-16 18:06:45,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:45,731 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:45,731 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:06:45,731 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 18:06:45,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:45,731 INFO L82 PathProgramCache]: Analyzing trace with hash 2089428332, now seen corresponding path program 286 times [2020-01-16 18:06:45,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:45,731 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742699385] [2020-01-16 18:06:45,731 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:45,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:46,257 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 18:06:46,258 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742699385] [2020-01-16 18:06:46,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:46,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:46,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014382978] [2020-01-16 18:06:46,258 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:46,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:46,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:46,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:46,259 INFO L87 Difference]: Start difference. First operand 1579 states and 7061 transitions. Second operand 11 states. [2020-01-16 18:06:46,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:46,490 INFO L93 Difference]: Finished difference Result 2961 states and 11752 transitions. [2020-01-16 18:06:46,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:46,491 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:46,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:46,498 INFO L225 Difference]: With dead ends: 2961 [2020-01-16 18:06:46,499 INFO L226 Difference]: Without dead ends: 2938 [2020-01-16 18:06:46,499 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:06:46,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2020-01-16 18:06:46,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 1573. [2020-01-16 18:06:46,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:06:46,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7044 transitions. [2020-01-16 18:06:46,565 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7044 transitions. Word has length 28 [2020-01-16 18:06:46,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:46,565 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7044 transitions. [2020-01-16 18:06:46,565 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:46,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7044 transitions. [2020-01-16 18:06:46,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:46,568 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:46,568 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 18:06:46,568 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 18:06:46,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:46,568 INFO L82 PathProgramCache]: Analyzing trace with hash -767845698, now seen corresponding path program 287 times [2020-01-16 18:06:46,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:46,568 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171539090] [2020-01-16 18:06:46,568 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:46,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:47,101 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 18:06:47,102 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171539090] [2020-01-16 18:06:47,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:47,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:47,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121347230] [2020-01-16 18:06:47,102 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:47,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:47,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:47,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:47,103 INFO L87 Difference]: Start difference. First operand 1573 states and 7044 transitions. Second operand 11 states. [2020-01-16 18:06:47,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:47,251 INFO L93 Difference]: Finished difference Result 2970 states and 11769 transitions. [2020-01-16 18:06:47,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:47,251 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:47,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:47,278 INFO L225 Difference]: With dead ends: 2970 [2020-01-16 18:06:47,278 INFO L226 Difference]: Without dead ends: 2950 [2020-01-16 18:06:47,278 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 18:06:47,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2020-01-16 18:06:47,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 1581. [2020-01-16 18:06:47,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:06:47,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7058 transitions. [2020-01-16 18:06:47,342 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7058 transitions. Word has length 28 [2020-01-16 18:06:47,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:47,343 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7058 transitions. [2020-01-16 18:06:47,343 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:47,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7058 transitions. [2020-01-16 18:06:47,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:47,345 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:47,345 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 18:06:47,345 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 18:06:47,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:47,346 INFO L82 PathProgramCache]: Analyzing trace with hash -594598006, now seen corresponding path program 288 times [2020-01-16 18:06:47,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:47,346 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347506807] [2020-01-16 18:06:47,346 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:47,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:47,872 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 18:06:47,873 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347506807] [2020-01-16 18:06:47,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:47,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:47,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582912931] [2020-01-16 18:06:47,873 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:47,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:47,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:47,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:47,874 INFO L87 Difference]: Start difference. First operand 1581 states and 7058 transitions. Second operand 11 states. [2020-01-16 18:06:48,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:48,048 INFO L93 Difference]: Finished difference Result 2967 states and 11756 transitions. [2020-01-16 18:06:48,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:48,048 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:48,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:48,055 INFO L225 Difference]: With dead ends: 2967 [2020-01-16 18:06:48,055 INFO L226 Difference]: Without dead ends: 2929 [2020-01-16 18:06:48,056 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:06:48,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2929 states. [2020-01-16 18:06:48,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2929 to 1560. [2020-01-16 18:06:48,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1560 states. [2020-01-16 18:06:48,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1560 states to 1560 states and 7015 transitions. [2020-01-16 18:06:48,124 INFO L78 Accepts]: Start accepts. Automaton has 1560 states and 7015 transitions. Word has length 28 [2020-01-16 18:06:48,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:48,124 INFO L478 AbstractCegarLoop]: Abstraction has 1560 states and 7015 transitions. [2020-01-16 18:06:48,124 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:48,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1560 states and 7015 transitions. [2020-01-16 18:06:48,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:48,126 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:48,126 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:06:48,126 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 18:06:48,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:48,127 INFO L82 PathProgramCache]: Analyzing trace with hash 405091818, now seen corresponding path program 289 times [2020-01-16 18:06:48,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:48,127 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230824817] [2020-01-16 18:06:48,127 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:48,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:48,651 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 18:06:48,652 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230824817] [2020-01-16 18:06:48,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:48,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:48,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701169907] [2020-01-16 18:06:48,652 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:48,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:48,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:48,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:48,653 INFO L87 Difference]: Start difference. First operand 1560 states and 7015 transitions. Second operand 11 states. [2020-01-16 18:06:48,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:48,868 INFO L93 Difference]: Finished difference Result 2913 states and 11649 transitions. [2020-01-16 18:06:48,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:48,869 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:48,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:48,876 INFO L225 Difference]: With dead ends: 2913 [2020-01-16 18:06:48,876 INFO L226 Difference]: Without dead ends: 2898 [2020-01-16 18:06:48,876 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:06:48,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2898 states. [2020-01-16 18:06:48,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2898 to 1573. [2020-01-16 18:06:48,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:06:48,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7058 transitions. [2020-01-16 18:06:48,944 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7058 transitions. Word has length 28 [2020-01-16 18:06:48,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:48,944 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7058 transitions. [2020-01-16 18:06:48,945 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:48,945 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7058 transitions. [2020-01-16 18:06:48,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:48,947 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:48,947 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 18:06:48,947 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 18:06:48,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:48,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1149794316, now seen corresponding path program 290 times [2020-01-16 18:06:48,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:48,947 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4970207] [2020-01-16 18:06:48,948 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:48,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:49,475 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 18:06:49,476 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4970207] [2020-01-16 18:06:49,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:49,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:49,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483537409] [2020-01-16 18:06:49,476 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:49,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:49,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:49,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:49,477 INFO L87 Difference]: Start difference. First operand 1573 states and 7058 transitions. Second operand 11 states. [2020-01-16 18:06:49,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:49,685 INFO L93 Difference]: Finished difference Result 2914 states and 11646 transitions. [2020-01-16 18:06:49,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:49,686 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:49,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:49,693 INFO L225 Difference]: With dead ends: 2914 [2020-01-16 18:06:49,693 INFO L226 Difference]: Without dead ends: 2893 [2020-01-16 18:06:49,694 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:06:49,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2893 states. [2020-01-16 18:06:49,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2893 to 1568. [2020-01-16 18:06:49,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 18:06:49,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7045 transitions. [2020-01-16 18:06:49,760 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7045 transitions. Word has length 28 [2020-01-16 18:06:49,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:49,760 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7045 transitions. [2020-01-16 18:06:49,760 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:49,760 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7045 transitions. [2020-01-16 18:06:49,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:49,762 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:49,762 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:06:49,762 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 18:06:49,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:49,763 INFO L82 PathProgramCache]: Analyzing trace with hash -130137984, now seen corresponding path program 291 times [2020-01-16 18:06:49,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:49,763 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211927555] [2020-01-16 18:06:49,763 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:49,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:50,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:06:50,293 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211927555] [2020-01-16 18:06:50,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:50,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:50,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764666299] [2020-01-16 18:06:50,294 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:50,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:50,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:50,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:50,294 INFO L87 Difference]: Start difference. First operand 1568 states and 7045 transitions. Second operand 11 states. [2020-01-16 18:06:50,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:50,527 INFO L93 Difference]: Finished difference Result 2910 states and 11638 transitions. [2020-01-16 18:06:50,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:50,528 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:50,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:50,534 INFO L225 Difference]: With dead ends: 2910 [2020-01-16 18:06:50,534 INFO L226 Difference]: Without dead ends: 2895 [2020-01-16 18:06:50,534 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 18:06:50,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2895 states. [2020-01-16 18:06:50,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2895 to 1572. [2020-01-16 18:06:50,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:06:50,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7052 transitions. [2020-01-16 18:06:50,601 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7052 transitions. Word has length 28 [2020-01-16 18:06:50,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:50,601 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7052 transitions. [2020-01-16 18:06:50,601 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:50,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7052 transitions. [2020-01-16 18:06:50,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:50,603 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:50,603 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 18:06:50,604 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 18:06:50,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:50,604 INFO L82 PathProgramCache]: Analyzing trace with hash 43109708, now seen corresponding path program 292 times [2020-01-16 18:06:50,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:50,604 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818764053] [2020-01-16 18:06:50,604 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:50,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:51,138 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 18:06:51,138 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818764053] [2020-01-16 18:06:51,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:51,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:51,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028884204] [2020-01-16 18:06:51,139 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:51,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:51,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:51,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:51,139 INFO L87 Difference]: Start difference. First operand 1572 states and 7052 transitions. Second operand 11 states. [2020-01-16 18:06:51,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:51,352 INFO L93 Difference]: Finished difference Result 2909 states and 11632 transitions. [2020-01-16 18:06:51,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:51,353 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:51,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:51,360 INFO L225 Difference]: With dead ends: 2909 [2020-01-16 18:06:51,360 INFO L226 Difference]: Without dead ends: 2891 [2020-01-16 18:06:51,361 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 18:06:51,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2891 states. [2020-01-16 18:06:51,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2891 to 1568. [2020-01-16 18:06:51,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 18:06:51,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7041 transitions. [2020-01-16 18:06:51,428 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7041 transitions. Word has length 28 [2020-01-16 18:06:51,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:51,428 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7041 transitions. [2020-01-16 18:06:51,429 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:51,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7041 transitions. [2020-01-16 18:06:51,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:51,431 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:51,431 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 18:06:51,431 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 18:06:51,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:51,431 INFO L82 PathProgramCache]: Analyzing trace with hash -2069461824, now seen corresponding path program 293 times [2020-01-16 18:06:51,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:51,431 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005416164] [2020-01-16 18:06:51,432 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:51,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:51,961 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 18:06:51,961 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005416164] [2020-01-16 18:06:51,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:51,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:51,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594620406] [2020-01-16 18:06:51,961 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:51,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:51,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:51,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:51,962 INFO L87 Difference]: Start difference. First operand 1568 states and 7041 transitions. Second operand 11 states. [2020-01-16 18:06:52,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:52,227 INFO L93 Difference]: Finished difference Result 2912 states and 11638 transitions. [2020-01-16 18:06:52,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:52,227 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:52,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:52,235 INFO L225 Difference]: With dead ends: 2912 [2020-01-16 18:06:52,235 INFO L226 Difference]: Without dead ends: 2896 [2020-01-16 18:06:52,235 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 18:06:52,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2896 states. [2020-01-16 18:06:52,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2896 to 1572. [2020-01-16 18:06:52,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:06:52,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7048 transitions. [2020-01-16 18:06:52,303 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7048 transitions. Word has length 28 [2020-01-16 18:06:52,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:52,303 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7048 transitions. [2020-01-16 18:06:52,303 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:52,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7048 transitions. [2020-01-16 18:06:52,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:52,305 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:52,306 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 18:06:52,306 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 18:06:52,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:52,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1654050666, now seen corresponding path program 294 times [2020-01-16 18:06:52,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:52,306 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019178960] [2020-01-16 18:06:52,306 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:52,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:52,738 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2020-01-16 18:06:52,860 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 18:06:52,860 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019178960] [2020-01-16 18:06:52,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:52,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:52,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19513894] [2020-01-16 18:06:52,860 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:52,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:52,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:52,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:52,861 INFO L87 Difference]: Start difference. First operand 1572 states and 7048 transitions. Second operand 11 states. [2020-01-16 18:06:53,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:53,094 INFO L93 Difference]: Finished difference Result 2910 states and 11630 transitions. [2020-01-16 18:06:53,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:53,095 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:53,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:53,102 INFO L225 Difference]: With dead ends: 2910 [2020-01-16 18:06:53,102 INFO L226 Difference]: Without dead ends: 2888 [2020-01-16 18:06:53,103 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 18:06:53,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2888 states. [2020-01-16 18:06:53,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2888 to 1564. [2020-01-16 18:06:53,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1564 states. [2020-01-16 18:06:53,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 7030 transitions. [2020-01-16 18:06:53,168 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 7030 transitions. Word has length 28 [2020-01-16 18:06:53,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:53,169 INFO L478 AbstractCegarLoop]: Abstraction has 1564 states and 7030 transitions. [2020-01-16 18:06:53,169 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:53,169 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 7030 transitions. [2020-01-16 18:06:53,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:53,171 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:53,171 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:06:53,171 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 18:06:53,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:53,171 INFO L82 PathProgramCache]: Analyzing trace with hash 1499183406, now seen corresponding path program 295 times [2020-01-16 18:06:53,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:53,172 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738666228] [2020-01-16 18:06:53,172 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:53,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:53,695 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 18:06:53,695 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738666228] [2020-01-16 18:06:53,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:53,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:53,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673226806] [2020-01-16 18:06:53,696 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:53,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:53,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:53,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:53,696 INFO L87 Difference]: Start difference. First operand 1564 states and 7030 transitions. Second operand 11 states. [2020-01-16 18:06:53,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:53,887 INFO L93 Difference]: Finished difference Result 2920 states and 11664 transitions. [2020-01-16 18:06:53,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:53,887 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:53,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:53,895 INFO L225 Difference]: With dead ends: 2920 [2020-01-16 18:06:53,895 INFO L226 Difference]: Without dead ends: 2905 [2020-01-16 18:06:53,895 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:06:53,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2905 states. [2020-01-16 18:06:53,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2905 to 1574. [2020-01-16 18:06:53,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:06:53,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7058 transitions. [2020-01-16 18:06:53,963 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7058 transitions. Word has length 28 [2020-01-16 18:06:53,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:53,963 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7058 transitions. [2020-01-16 18:06:53,963 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:53,963 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7058 transitions. [2020-01-16 18:06:53,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:53,966 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:53,966 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:06:53,966 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 18:06:53,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:53,966 INFO L82 PathProgramCache]: Analyzing trace with hash -2051081392, now seen corresponding path program 296 times [2020-01-16 18:06:53,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:53,966 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812488440] [2020-01-16 18:06:53,966 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:53,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:54,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:06:54,498 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812488440] [2020-01-16 18:06:54,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:54,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:54,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145308972] [2020-01-16 18:06:54,498 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:54,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:54,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:54,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:54,499 INFO L87 Difference]: Start difference. First operand 1574 states and 7058 transitions. Second operand 11 states. [2020-01-16 18:06:54,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:54,701 INFO L93 Difference]: Finished difference Result 2921 states and 11661 transitions. [2020-01-16 18:06:54,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:54,702 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:54,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:54,709 INFO L225 Difference]: With dead ends: 2921 [2020-01-16 18:06:54,709 INFO L226 Difference]: Without dead ends: 2900 [2020-01-16 18:06:54,710 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 18:06:54,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2900 states. [2020-01-16 18:06:54,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2900 to 1569. [2020-01-16 18:06:54,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:06:54,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7044 transitions. [2020-01-16 18:06:54,778 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7044 transitions. Word has length 28 [2020-01-16 18:06:54,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:54,778 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7044 transitions. [2020-01-16 18:06:54,778 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:54,779 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7044 transitions. [2020-01-16 18:06:54,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:54,781 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:54,781 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 18:06:54,781 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 18:06:54,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:54,781 INFO L82 PathProgramCache]: Analyzing trace with hash -109131776, now seen corresponding path program 297 times [2020-01-16 18:06:54,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:54,782 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013814521] [2020-01-16 18:06:54,782 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:54,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:55,309 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 18:06:55,309 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013814521] [2020-01-16 18:06:55,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:55,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:55,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087121934] [2020-01-16 18:06:55,310 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:55,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:55,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:55,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:55,310 INFO L87 Difference]: Start difference. First operand 1569 states and 7044 transitions. Second operand 11 states. [2020-01-16 18:06:55,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:55,574 INFO L93 Difference]: Finished difference Result 2921 states and 11661 transitions. [2020-01-16 18:06:55,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:55,574 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:55,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:55,581 INFO L225 Difference]: With dead ends: 2921 [2020-01-16 18:06:55,581 INFO L226 Difference]: Without dead ends: 2906 [2020-01-16 18:06:55,581 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 18:06:55,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2906 states. [2020-01-16 18:06:55,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2906 to 1574. [2020-01-16 18:06:55,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:06:55,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7053 transitions. [2020-01-16 18:06:55,647 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7053 transitions. Word has length 28 [2020-01-16 18:06:55,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:55,647 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7053 transitions. [2020-01-16 18:06:55,647 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:55,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7053 transitions. [2020-01-16 18:06:55,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:55,650 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:55,650 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 18:06:55,650 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 18:06:55,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:55,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1553520912, now seen corresponding path program 298 times [2020-01-16 18:06:55,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:55,650 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282979450] [2020-01-16 18:06:55,650 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:55,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:56,182 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 18:06:56,182 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282979450] [2020-01-16 18:06:56,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:56,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:56,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081214918] [2020-01-16 18:06:56,183 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:56,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:56,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:56,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:56,183 INFO L87 Difference]: Start difference. First operand 1574 states and 7053 transitions. Second operand 11 states. [2020-01-16 18:06:56,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:56,452 INFO L93 Difference]: Finished difference Result 2923 states and 11660 transitions. [2020-01-16 18:06:56,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:56,453 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:56,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:56,460 INFO L225 Difference]: With dead ends: 2923 [2020-01-16 18:06:56,460 INFO L226 Difference]: Without dead ends: 2901 [2020-01-16 18:06:56,460 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 18:06:56,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2901 states. [2020-01-16 18:06:56,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2901 to 1569. [2020-01-16 18:06:56,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:06:56,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7039 transitions. [2020-01-16 18:06:56,526 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7039 transitions. Word has length 28 [2020-01-16 18:06:56,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:56,527 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7039 transitions. [2020-01-16 18:06:56,527 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:56,527 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7039 transitions. [2020-01-16 18:06:56,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:56,529 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:56,529 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:06:56,529 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 18:06:56,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:56,529 INFO L82 PathProgramCache]: Analyzing trace with hash -2048455616, now seen corresponding path program 299 times [2020-01-16 18:06:56,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:56,529 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083620003] [2020-01-16 18:06:56,530 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:56,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:57,062 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 18:06:57,063 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083620003] [2020-01-16 18:06:57,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:57,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:57,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690569292] [2020-01-16 18:06:57,063 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:57,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:57,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:57,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:57,064 INFO L87 Difference]: Start difference. First operand 1569 states and 7039 transitions. Second operand 11 states. [2020-01-16 18:06:57,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:57,328 INFO L93 Difference]: Finished difference Result 2924 states and 11663 transitions. [2020-01-16 18:06:57,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:57,328 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:57,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:57,335 INFO L225 Difference]: With dead ends: 2924 [2020-01-16 18:06:57,335 INFO L226 Difference]: Without dead ends: 2908 [2020-01-16 18:06:57,336 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 18:06:57,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2020-01-16 18:06:57,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 1575. [2020-01-16 18:06:57,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:06:57,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7050 transitions. [2020-01-16 18:06:57,404 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7050 transitions. Word has length 28 [2020-01-16 18:06:57,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:57,404 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7050 transitions. [2020-01-16 18:06:57,404 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:57,404 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7050 transitions. [2020-01-16 18:06:57,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:57,406 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:57,406 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 18:06:57,406 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 18:06:57,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:57,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1130505426, now seen corresponding path program 300 times [2020-01-16 18:06:57,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:57,407 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358468011] [2020-01-16 18:06:57,407 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:57,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:57,937 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 18:06:57,937 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358468011] [2020-01-16 18:06:57,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:57,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:57,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773639699] [2020-01-16 18:06:57,937 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:57,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:57,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:57,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:57,938 INFO L87 Difference]: Start difference. First operand 1575 states and 7050 transitions. Second operand 11 states. [2020-01-16 18:06:58,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:58,210 INFO L93 Difference]: Finished difference Result 2925 states and 11659 transitions. [2020-01-16 18:06:58,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:58,211 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:58,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:58,218 INFO L225 Difference]: With dead ends: 2925 [2020-01-16 18:06:58,219 INFO L226 Difference]: Without dead ends: 2897 [2020-01-16 18:06:58,219 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:06:58,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2897 states. [2020-01-16 18:06:58,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2897 to 1564. [2020-01-16 18:06:58,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1564 states. [2020-01-16 18:06:58,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 7026 transitions. [2020-01-16 18:06:58,285 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 7026 transitions. Word has length 28 [2020-01-16 18:06:58,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:58,285 INFO L478 AbstractCegarLoop]: Abstraction has 1564 states and 7026 transitions. [2020-01-16 18:06:58,285 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:58,285 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 7026 transitions. [2020-01-16 18:06:58,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:58,308 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:58,308 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:06:58,308 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 18:06:58,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:58,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1551698926, now seen corresponding path program 301 times [2020-01-16 18:06:58,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:58,309 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150809610] [2020-01-16 18:06:58,309 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:58,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:58,826 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 18:06:58,826 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150809610] [2020-01-16 18:06:58,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:58,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:58,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111253449] [2020-01-16 18:06:58,827 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:58,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:58,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:58,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:58,827 INFO L87 Difference]: Start difference. First operand 1564 states and 7026 transitions. Second operand 11 states. [2020-01-16 18:06:59,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:59,036 INFO L93 Difference]: Finished difference Result 2911 states and 11636 transitions. [2020-01-16 18:06:59,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:59,037 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:59,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:59,043 INFO L225 Difference]: With dead ends: 2911 [2020-01-16 18:06:59,044 INFO L226 Difference]: Without dead ends: 2896 [2020-01-16 18:06:59,044 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:06:59,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2896 states. [2020-01-16 18:06:59,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2896 to 1572. [2020-01-16 18:06:59,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:06:59,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7048 transitions. [2020-01-16 18:06:59,111 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7048 transitions. Word has length 28 [2020-01-16 18:06:59,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:59,111 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7048 transitions. [2020-01-16 18:06:59,111 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:59,111 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7048 transitions. [2020-01-16 18:06:59,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:59,113 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:59,113 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:06:59,113 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 18:06:59,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:59,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1724946618, now seen corresponding path program 302 times [2020-01-16 18:06:59,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:59,114 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891587412] [2020-01-16 18:06:59,114 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:59,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:06:59,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:06:59,636 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891587412] [2020-01-16 18:06:59,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:06:59,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:06:59,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293123486] [2020-01-16 18:06:59,636 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:06:59,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:06:59,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:06:59,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:06:59,637 INFO L87 Difference]: Start difference. First operand 1572 states and 7048 transitions. Second operand 11 states. [2020-01-16 18:06:59,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:06:59,849 INFO L93 Difference]: Finished difference Result 2910 states and 11630 transitions. [2020-01-16 18:06:59,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:06:59,850 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:06:59,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:06:59,858 INFO L225 Difference]: With dead ends: 2910 [2020-01-16 18:06:59,858 INFO L226 Difference]: Without dead ends: 2892 [2020-01-16 18:06:59,858 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 18:06:59,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2892 states. [2020-01-16 18:06:59,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2892 to 1568. [2020-01-16 18:06:59,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 18:06:59,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7037 transitions. [2020-01-16 18:06:59,925 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7037 transitions. Word has length 28 [2020-01-16 18:06:59,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:06:59,925 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7037 transitions. [2020-01-16 18:06:59,925 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:06:59,925 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7037 transitions. [2020-01-16 18:06:59,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:06:59,927 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:06:59,927 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 18:06:59,928 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 18:06:59,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:06:59,928 INFO L82 PathProgramCache]: Analyzing trace with hash 478613546, now seen corresponding path program 303 times [2020-01-16 18:06:59,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:06:59,928 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403312079] [2020-01-16 18:06:59,928 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:06:59,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:00,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:07:00,438 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403312079] [2020-01-16 18:07:00,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:00,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:00,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608718143] [2020-01-16 18:07:00,438 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:00,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:00,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:00,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:00,438 INFO L87 Difference]: Start difference. First operand 1568 states and 7037 transitions. Second operand 11 states. [2020-01-16 18:07:00,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:00,635 INFO L93 Difference]: Finished difference Result 2915 states and 11641 transitions. [2020-01-16 18:07:00,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:00,636 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:00,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:00,643 INFO L225 Difference]: With dead ends: 2915 [2020-01-16 18:07:00,643 INFO L226 Difference]: Without dead ends: 2900 [2020-01-16 18:07:00,643 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:07:00,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2900 states. [2020-01-16 18:07:00,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2900 to 1573. [2020-01-16 18:07:00,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:07:00,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7046 transitions. [2020-01-16 18:07:00,713 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7046 transitions. Word has length 28 [2020-01-16 18:07:00,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:00,713 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7046 transitions. [2020-01-16 18:07:00,713 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:00,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7046 transitions. [2020-01-16 18:07:00,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:00,715 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:00,715 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:07:00,715 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 18:07:00,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:00,716 INFO L82 PathProgramCache]: Analyzing trace with hash 2141266234, now seen corresponding path program 304 times [2020-01-16 18:07:00,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:00,716 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150333201] [2020-01-16 18:07:00,716 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:00,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:01,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:07:01,238 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150333201] [2020-01-16 18:07:01,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:01,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:01,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443190570] [2020-01-16 18:07:01,239 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:01,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:01,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:01,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:01,239 INFO L87 Difference]: Start difference. First operand 1573 states and 7046 transitions. Second operand 11 states. [2020-01-16 18:07:01,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:01,414 INFO L93 Difference]: Finished difference Result 2917 states and 11640 transitions. [2020-01-16 18:07:01,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:01,414 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:01,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:01,422 INFO L225 Difference]: With dead ends: 2917 [2020-01-16 18:07:01,422 INFO L226 Difference]: Without dead ends: 2895 [2020-01-16 18:07:01,422 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 18:07:01,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2895 states. [2020-01-16 18:07:01,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2895 to 1568. [2020-01-16 18:07:01,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 18:07:01,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7033 transitions. [2020-01-16 18:07:01,488 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7033 transitions. Word has length 28 [2020-01-16 18:07:01,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:01,488 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7033 transitions. [2020-01-16 18:07:01,489 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:01,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7033 transitions. [2020-01-16 18:07:01,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:01,491 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:01,491 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 18:07:01,491 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 18:07:01,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:01,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1727572394, now seen corresponding path program 305 times [2020-01-16 18:07:01,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:01,492 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434990233] [2020-01-16 18:07:01,492 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:01,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:02,013 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 18:07:02,014 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434990233] [2020-01-16 18:07:02,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:02,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:02,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062455165] [2020-01-16 18:07:02,014 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:02,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:02,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:02,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:02,015 INFO L87 Difference]: Start difference. First operand 1568 states and 7033 transitions. Second operand 11 states. [2020-01-16 18:07:02,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:02,186 INFO L93 Difference]: Finished difference Result 2912 states and 11630 transitions. [2020-01-16 18:07:02,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:02,187 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:02,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:02,194 INFO L225 Difference]: With dead ends: 2912 [2020-01-16 18:07:02,194 INFO L226 Difference]: Without dead ends: 2898 [2020-01-16 18:07:02,194 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 18:07:02,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2898 states. [2020-01-16 18:07:02,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2898 to 1572. [2020-01-16 18:07:02,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:07:02,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7040 transitions. [2020-01-16 18:07:02,261 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7040 transitions. Word has length 28 [2020-01-16 18:07:02,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:02,261 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7040 transitions. [2020-01-16 18:07:02,261 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:02,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7040 transitions. [2020-01-16 18:07:02,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:02,263 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:02,263 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 18:07:02,263 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 18:07:02,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:02,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1077989906, now seen corresponding path program 306 times [2020-01-16 18:07:02,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:02,264 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896141014] [2020-01-16 18:07:02,264 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:02,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:02,787 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 18:07:02,787 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896141014] [2020-01-16 18:07:02,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:02,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:02,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973152460] [2020-01-16 18:07:02,788 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:02,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:02,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:02,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:02,788 INFO L87 Difference]: Start difference. First operand 1572 states and 7040 transitions. Second operand 11 states. [2020-01-16 18:07:02,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:02,985 INFO L93 Difference]: Finished difference Result 2915 states and 11632 transitions. [2020-01-16 18:07:02,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:02,985 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:02,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:02,992 INFO L225 Difference]: With dead ends: 2915 [2020-01-16 18:07:02,992 INFO L226 Difference]: Without dead ends: 2890 [2020-01-16 18:07:02,993 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 18:07:03,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2890 states. [2020-01-16 18:07:03,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2890 to 1564. [2020-01-16 18:07:03,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1564 states. [2020-01-16 18:07:03,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 7022 transitions. [2020-01-16 18:07:03,060 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 7022 transitions. Word has length 28 [2020-01-16 18:07:03,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:03,061 INFO L478 AbstractCegarLoop]: Abstraction has 1564 states and 7022 transitions. [2020-01-16 18:07:03,061 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:03,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 7022 transitions. [2020-01-16 18:07:03,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:03,063 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:03,063 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 18:07:03,063 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 18:07:03,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:03,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1988062768, now seen corresponding path program 307 times [2020-01-16 18:07:03,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:03,064 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066428079] [2020-01-16 18:07:03,064 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:03,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:03,585 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 18:07:03,586 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066428079] [2020-01-16 18:07:03,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:03,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:03,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315069169] [2020-01-16 18:07:03,586 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:03,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:03,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:03,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:03,586 INFO L87 Difference]: Start difference. First operand 1564 states and 7022 transitions. Second operand 11 states. [2020-01-16 18:07:03,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:03,769 INFO L93 Difference]: Finished difference Result 2915 states and 11641 transitions. [2020-01-16 18:07:03,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:03,770 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:03,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:03,777 INFO L225 Difference]: With dead ends: 2915 [2020-01-16 18:07:03,777 INFO L226 Difference]: Without dead ends: 2899 [2020-01-16 18:07:03,777 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 18:07:03,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-01-16 18:07:03,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1572. [2020-01-16 18:07:03,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:07:03,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7044 transitions. [2020-01-16 18:07:03,845 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7044 transitions. Word has length 28 [2020-01-16 18:07:03,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:03,845 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7044 transitions. [2020-01-16 18:07:03,845 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:03,845 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7044 transitions. [2020-01-16 18:07:03,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:03,847 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:03,847 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:07:03,847 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 18:07:03,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:03,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1735449722, now seen corresponding path program 308 times [2020-01-16 18:07:03,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:03,848 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100262709] [2020-01-16 18:07:03,848 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:03,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:04,369 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 18:07:04,370 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100262709] [2020-01-16 18:07:04,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:04,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:04,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263351172] [2020-01-16 18:07:04,370 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:04,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:04,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:04,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:04,371 INFO L87 Difference]: Start difference. First operand 1572 states and 7044 transitions. Second operand 11 states. [2020-01-16 18:07:04,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:04,566 INFO L93 Difference]: Finished difference Result 2913 states and 11633 transitions. [2020-01-16 18:07:04,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:04,566 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:04,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:04,574 INFO L225 Difference]: With dead ends: 2913 [2020-01-16 18:07:04,574 INFO L226 Difference]: Without dead ends: 2895 [2020-01-16 18:07:04,575 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 18:07:04,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2895 states. [2020-01-16 18:07:04,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2895 to 1568. [2020-01-16 18:07:04,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 18:07:04,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7033 transitions. [2020-01-16 18:07:04,642 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7033 transitions. Word has length 28 [2020-01-16 18:07:04,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:04,642 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7033 transitions. [2020-01-16 18:07:04,642 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:04,643 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7033 transitions. [2020-01-16 18:07:04,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:04,645 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:04,645 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 18:07:04,645 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 18:07:04,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:04,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1233819148, now seen corresponding path program 309 times [2020-01-16 18:07:04,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:04,646 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317814348] [2020-01-16 18:07:04,646 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:04,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:05,173 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 18:07:05,173 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317814348] [2020-01-16 18:07:05,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:05,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:05,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119036660] [2020-01-16 18:07:05,173 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:05,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:05,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:05,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:05,174 INFO L87 Difference]: Start difference. First operand 1568 states and 7033 transitions. Second operand 11 states. [2020-01-16 18:07:05,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:05,339 INFO L93 Difference]: Finished difference Result 2920 states and 11649 transitions. [2020-01-16 18:07:05,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:05,340 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:05,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:05,346 INFO L225 Difference]: With dead ends: 2920 [2020-01-16 18:07:05,347 INFO L226 Difference]: Without dead ends: 2904 [2020-01-16 18:07:05,347 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:07:05,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2904 states. [2020-01-16 18:07:05,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2904 to 1574. [2020-01-16 18:07:05,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:07:05,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7044 transitions. [2020-01-16 18:07:05,415 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7044 transitions. Word has length 28 [2020-01-16 18:07:05,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:05,415 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7044 transitions. [2020-01-16 18:07:05,415 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:05,415 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7044 transitions. [2020-01-16 18:07:05,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:05,417 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:05,417 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 18:07:05,417 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 18:07:05,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:05,418 INFO L82 PathProgramCache]: Analyzing trace with hash -2143197958, now seen corresponding path program 310 times [2020-01-16 18:07:05,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:05,418 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235276280] [2020-01-16 18:07:05,418 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:05,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:05,946 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 18:07:05,946 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235276280] [2020-01-16 18:07:05,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:05,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:05,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707576270] [2020-01-16 18:07:05,947 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:05,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:05,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:05,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:05,947 INFO L87 Difference]: Start difference. First operand 1574 states and 7044 transitions. Second operand 11 states. [2020-01-16 18:07:06,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:06,150 INFO L93 Difference]: Finished difference Result 2921 states and 11645 transitions. [2020-01-16 18:07:06,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:06,150 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:06,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:06,158 INFO L225 Difference]: With dead ends: 2921 [2020-01-16 18:07:06,158 INFO L226 Difference]: Without dead ends: 2898 [2020-01-16 18:07:06,158 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 18:07:06,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2898 states. [2020-01-16 18:07:06,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2898 to 1568. [2020-01-16 18:07:06,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 18:07:06,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7029 transitions. [2020-01-16 18:07:06,226 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7029 transitions. Word has length 28 [2020-01-16 18:07:06,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:06,226 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7029 transitions. [2020-01-16 18:07:06,226 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:06,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7029 transitions. [2020-01-16 18:07:06,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:06,228 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:06,228 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:07:06,228 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 18:07:06,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:06,229 INFO L82 PathProgramCache]: Analyzing trace with hash 127134540, now seen corresponding path program 311 times [2020-01-16 18:07:06,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:06,229 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026006680] [2020-01-16 18:07:06,229 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:06,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:06,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:07:06,749 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026006680] [2020-01-16 18:07:06,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:06,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:06,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456867255] [2020-01-16 18:07:06,750 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:06,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:06,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:06,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:06,750 INFO L87 Difference]: Start difference. First operand 1568 states and 7029 transitions. Second operand 11 states. [2020-01-16 18:07:06,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:06,918 INFO L93 Difference]: Finished difference Result 2914 states and 11631 transitions. [2020-01-16 18:07:06,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:06,918 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:06,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:06,926 INFO L225 Difference]: With dead ends: 2914 [2020-01-16 18:07:06,926 INFO L226 Difference]: Without dead ends: 2900 [2020-01-16 18:07:06,926 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 18:07:06,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2900 states. [2020-01-16 18:07:06,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2900 to 1572. [2020-01-16 18:07:06,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:07:06,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7036 transitions. [2020-01-16 18:07:06,997 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7036 transitions. Word has length 28 [2020-01-16 18:07:06,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:06,997 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7036 transitions. [2020-01-16 18:07:06,997 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:06,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7036 transitions. [2020-01-16 18:07:07,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:07,000 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:07,000 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:07:07,000 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 18:07:07,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:07,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1616539536, now seen corresponding path program 312 times [2020-01-16 18:07:07,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:07,000 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561862521] [2020-01-16 18:07:07,001 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:07,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:07,530 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 18:07:07,531 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561862521] [2020-01-16 18:07:07,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:07,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:07,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282913075] [2020-01-16 18:07:07,531 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:07,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:07,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:07,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:07,532 INFO L87 Difference]: Start difference. First operand 1572 states and 7036 transitions. Second operand 11 states. [2020-01-16 18:07:07,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:07,708 INFO L93 Difference]: Finished difference Result 2917 states and 11633 transitions. [2020-01-16 18:07:07,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:07,709 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:07,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:07,716 INFO L225 Difference]: With dead ends: 2917 [2020-01-16 18:07:07,717 INFO L226 Difference]: Without dead ends: 2888 [2020-01-16 18:07:07,717 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 18:07:07,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2888 states. [2020-01-16 18:07:07,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2888 to 1560. [2020-01-16 18:07:07,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1560 states. [2020-01-16 18:07:07,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1560 states to 1560 states and 7011 transitions. [2020-01-16 18:07:07,783 INFO L78 Accepts]: Start accepts. Automaton has 1560 states and 7011 transitions. Word has length 28 [2020-01-16 18:07:07,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:07,783 INFO L478 AbstractCegarLoop]: Abstraction has 1560 states and 7011 transitions. [2020-01-16 18:07:07,783 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:07,783 INFO L276 IsEmpty]: Start isEmpty. Operand 1560 states and 7011 transitions. [2020-01-16 18:07:07,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:07,786 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:07,786 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 18:07:07,786 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 18:07:07,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:07,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1953338296, now seen corresponding path program 313 times [2020-01-16 18:07:07,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:07,786 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989073188] [2020-01-16 18:07:07,786 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:07,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:08,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:07:08,299 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989073188] [2020-01-16 18:07:08,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:08,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:08,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059561008] [2020-01-16 18:07:08,300 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:08,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:08,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:08,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:08,300 INFO L87 Difference]: Start difference. First operand 1560 states and 7011 transitions. Second operand 11 states. [2020-01-16 18:07:08,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:08,470 INFO L93 Difference]: Finished difference Result 2937 states and 11697 transitions. [2020-01-16 18:07:08,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:08,470 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:08,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:08,477 INFO L225 Difference]: With dead ends: 2937 [2020-01-16 18:07:08,477 INFO L226 Difference]: Without dead ends: 2922 [2020-01-16 18:07:08,477 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 18:07:08,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2922 states. [2020-01-16 18:07:08,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2922 to 1576. [2020-01-16 18:07:08,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:07:08,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7063 transitions. [2020-01-16 18:07:08,544 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7063 transitions. Word has length 28 [2020-01-16 18:07:08,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:08,544 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7063 transitions. [2020-01-16 18:07:08,544 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:08,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7063 transitions. [2020-01-16 18:07:08,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:08,546 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:08,546 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 18:07:08,546 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 18:07:08,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:08,546 INFO L82 PathProgramCache]: Analyzing trace with hash -463933300, now seen corresponding path program 314 times [2020-01-16 18:07:08,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:08,547 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223951052] [2020-01-16 18:07:08,547 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:08,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:09,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:07:09,077 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223951052] [2020-01-16 18:07:09,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:09,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:09,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940398756] [2020-01-16 18:07:09,078 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:09,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:09,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:09,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:09,078 INFO L87 Difference]: Start difference. First operand 1576 states and 7063 transitions. Second operand 11 states. [2020-01-16 18:07:09,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:09,241 INFO L93 Difference]: Finished difference Result 2942 states and 11701 transitions. [2020-01-16 18:07:09,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:09,241 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:09,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:09,248 INFO L225 Difference]: With dead ends: 2942 [2020-01-16 18:07:09,248 INFO L226 Difference]: Without dead ends: 2916 [2020-01-16 18:07:09,248 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 18:07:09,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2020-01-16 18:07:09,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 1570. [2020-01-16 18:07:09,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:07:09,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7047 transitions. [2020-01-16 18:07:09,314 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7047 transitions. Word has length 28 [2020-01-16 18:07:09,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:09,315 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7047 transitions. [2020-01-16 18:07:09,315 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:09,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7047 transitions. [2020-01-16 18:07:09,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:09,317 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:09,317 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 18:07:09,317 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 18:07:09,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:09,317 INFO L82 PathProgramCache]: Analyzing trace with hash 195458240, now seen corresponding path program 315 times [2020-01-16 18:07:09,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:09,318 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953510804] [2020-01-16 18:07:09,318 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:09,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:09,835 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 18:07:09,835 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953510804] [2020-01-16 18:07:09,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:09,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:09,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291580300] [2020-01-16 18:07:09,836 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:09,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:09,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:09,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:09,836 INFO L87 Difference]: Start difference. First operand 1570 states and 7047 transitions. Second operand 11 states. [2020-01-16 18:07:10,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:10,024 INFO L93 Difference]: Finished difference Result 2929 states and 11676 transitions. [2020-01-16 18:07:10,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:10,024 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:10,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:10,032 INFO L225 Difference]: With dead ends: 2929 [2020-01-16 18:07:10,032 INFO L226 Difference]: Without dead ends: 2914 [2020-01-16 18:07:10,032 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:07:10,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2914 states. [2020-01-16 18:07:10,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2914 to 1574. [2020-01-16 18:07:10,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:07:10,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7054 transitions. [2020-01-16 18:07:10,100 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7054 transitions. Word has length 28 [2020-01-16 18:07:10,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:10,101 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7054 transitions. [2020-01-16 18:07:10,101 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:10,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7054 transitions. [2020-01-16 18:07:10,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:10,103 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:10,103 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 18:07:10,103 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 18:07:10,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:10,103 INFO L82 PathProgramCache]: Analyzing trace with hash 368705932, now seen corresponding path program 316 times [2020-01-16 18:07:10,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:10,104 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486374120] [2020-01-16 18:07:10,104 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:10,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:10,622 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 18:07:10,623 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486374120] [2020-01-16 18:07:10,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:10,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:10,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965509699] [2020-01-16 18:07:10,623 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:10,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:10,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:10,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:10,624 INFO L87 Difference]: Start difference. First operand 1574 states and 7054 transitions. Second operand 11 states. [2020-01-16 18:07:10,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:10,793 INFO L93 Difference]: Finished difference Result 2928 states and 11670 transitions. [2020-01-16 18:07:10,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:10,794 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:10,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:10,801 INFO L225 Difference]: With dead ends: 2928 [2020-01-16 18:07:10,801 INFO L226 Difference]: Without dead ends: 2910 [2020-01-16 18:07:10,801 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 18:07:10,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2910 states. [2020-01-16 18:07:10,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2910 to 1570. [2020-01-16 18:07:10,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:07:10,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7043 transitions. [2020-01-16 18:07:10,869 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7043 transitions. Word has length 28 [2020-01-16 18:07:10,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:10,869 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7043 transitions. [2020-01-16 18:07:10,869 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:10,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7043 transitions. [2020-01-16 18:07:10,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:10,871 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:10,871 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:07:10,871 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 18:07:10,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:10,872 INFO L82 PathProgramCache]: Analyzing trace with hash 611777856, now seen corresponding path program 317 times [2020-01-16 18:07:10,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:10,872 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001961788] [2020-01-16 18:07:10,872 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:10,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:11,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:07:11,400 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001961788] [2020-01-16 18:07:11,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:11,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:11,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671888293] [2020-01-16 18:07:11,400 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:11,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:11,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:11,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:11,401 INFO L87 Difference]: Start difference. First operand 1570 states and 7043 transitions. Second operand 11 states. [2020-01-16 18:07:11,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:11,543 INFO L93 Difference]: Finished difference Result 2940 states and 11692 transitions. [2020-01-16 18:07:11,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:11,543 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:11,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:11,549 INFO L225 Difference]: With dead ends: 2940 [2020-01-16 18:07:11,549 INFO L226 Difference]: Without dead ends: 2920 [2020-01-16 18:07:11,550 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 18:07:11,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2920 states. [2020-01-16 18:07:11,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2920 to 1575. [2020-01-16 18:07:11,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:07:11,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7051 transitions. [2020-01-16 18:07:11,617 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7051 transitions. Word has length 28 [2020-01-16 18:07:11,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:11,618 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7051 transitions. [2020-01-16 18:07:11,618 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:11,618 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7051 transitions. [2020-01-16 18:07:11,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:11,620 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:11,620 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 18:07:11,620 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 18:07:11,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:11,620 INFO L82 PathProgramCache]: Analyzing trace with hash -704379448, now seen corresponding path program 318 times [2020-01-16 18:07:11,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:11,621 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264124831] [2020-01-16 18:07:11,621 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:11,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:12,135 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 18:07:12,135 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264124831] [2020-01-16 18:07:12,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:12,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:12,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567020705] [2020-01-16 18:07:12,136 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:12,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:12,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:12,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:12,136 INFO L87 Difference]: Start difference. First operand 1575 states and 7051 transitions. Second operand 11 states. [2020-01-16 18:07:12,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:12,314 INFO L93 Difference]: Finished difference Result 2934 states and 11676 transitions. [2020-01-16 18:07:12,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:12,314 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:12,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:12,321 INFO L225 Difference]: With dead ends: 2934 [2020-01-16 18:07:12,321 INFO L226 Difference]: Without dead ends: 2910 [2020-01-16 18:07:12,321 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 18:07:12,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2910 states. [2020-01-16 18:07:12,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2910 to 1565. [2020-01-16 18:07:12,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 18:07:12,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7029 transitions. [2020-01-16 18:07:12,389 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7029 transitions. Word has length 28 [2020-01-16 18:07:12,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:12,389 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7029 transitions. [2020-01-16 18:07:12,389 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:12,389 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7029 transitions. [2020-01-16 18:07:12,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:12,392 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:12,392 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 18:07:12,392 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 18:07:12,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:12,392 INFO L82 PathProgramCache]: Analyzing trace with hash -859246708, now seen corresponding path program 319 times [2020-01-16 18:07:12,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:12,392 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929580099] [2020-01-16 18:07:12,392 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:12,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:12,934 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 18:07:12,935 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929580099] [2020-01-16 18:07:12,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:12,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:12,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476477510] [2020-01-16 18:07:12,935 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:12,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:12,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:12,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:12,936 INFO L87 Difference]: Start difference. First operand 1565 states and 7029 transitions. Second operand 11 states. [2020-01-16 18:07:13,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:13,130 INFO L93 Difference]: Finished difference Result 2945 states and 11714 transitions. [2020-01-16 18:07:13,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:13,130 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:13,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:13,138 INFO L225 Difference]: With dead ends: 2945 [2020-01-16 18:07:13,138 INFO L226 Difference]: Without dead ends: 2930 [2020-01-16 18:07:13,138 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:07:13,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2020-01-16 18:07:13,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1577. [2020-01-16 18:07:13,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:07:13,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7062 transitions. [2020-01-16 18:07:13,205 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7062 transitions. Word has length 28 [2020-01-16 18:07:13,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:13,205 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7062 transitions. [2020-01-16 18:07:13,205 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:13,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7062 transitions. [2020-01-16 18:07:13,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:13,207 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:13,207 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:07:13,207 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 18:07:13,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:13,208 INFO L82 PathProgramCache]: Analyzing trace with hash 630158288, now seen corresponding path program 320 times [2020-01-16 18:07:13,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:13,208 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16309371] [2020-01-16 18:07:13,208 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:13,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:13,742 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 18:07:13,742 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16309371] [2020-01-16 18:07:13,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:13,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:13,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919271807] [2020-01-16 18:07:13,743 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:13,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:13,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:13,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:13,743 INFO L87 Difference]: Start difference. First operand 1577 states and 7062 transitions. Second operand 11 states. [2020-01-16 18:07:13,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:13,908 INFO L93 Difference]: Finished difference Result 2950 states and 11718 transitions. [2020-01-16 18:07:13,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:13,908 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:13,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:13,916 INFO L225 Difference]: With dead ends: 2950 [2020-01-16 18:07:13,916 INFO L226 Difference]: Without dead ends: 2924 [2020-01-16 18:07:13,916 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:07:13,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2924 states. [2020-01-16 18:07:13,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2924 to 1571. [2020-01-16 18:07:13,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:07:13,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7045 transitions. [2020-01-16 18:07:13,984 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7045 transitions. Word has length 28 [2020-01-16 18:07:13,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:13,984 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7045 transitions. [2020-01-16 18:07:13,984 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:13,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7045 transitions. [2020-01-16 18:07:13,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:13,987 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:13,987 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 18:07:13,987 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 18:07:13,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:13,987 INFO L82 PathProgramCache]: Analyzing trace with hash 216464448, now seen corresponding path program 321 times [2020-01-16 18:07:13,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:13,987 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547671107] [2020-01-16 18:07:13,987 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:13,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:14,509 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 18:07:14,509 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547671107] [2020-01-16 18:07:14,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:14,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:14,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555178311] [2020-01-16 18:07:14,510 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:14,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:14,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:14,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:14,510 INFO L87 Difference]: Start difference. First operand 1571 states and 7045 transitions. Second operand 11 states. [2020-01-16 18:07:14,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:14,694 INFO L93 Difference]: Finished difference Result 2941 states and 11701 transitions. [2020-01-16 18:07:14,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:14,695 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:14,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:14,702 INFO L225 Difference]: With dead ends: 2941 [2020-01-16 18:07:14,702 INFO L226 Difference]: Without dead ends: 2926 [2020-01-16 18:07:14,702 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 18:07:14,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2020-01-16 18:07:14,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 1576. [2020-01-16 18:07:14,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:07:14,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7054 transitions. [2020-01-16 18:07:14,768 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7054 transitions. Word has length 28 [2020-01-16 18:07:14,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:14,768 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7054 transitions. [2020-01-16 18:07:14,768 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:14,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7054 transitions. [2020-01-16 18:07:14,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:14,770 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:14,770 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 18:07:14,771 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 18:07:14,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:14,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1879117136, now seen corresponding path program 322 times [2020-01-16 18:07:14,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:14,771 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885502890] [2020-01-16 18:07:14,771 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:14,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:15,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:07:15,283 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885502890] [2020-01-16 18:07:15,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:15,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:15,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652148323] [2020-01-16 18:07:15,284 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:15,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:15,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:15,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:15,284 INFO L87 Difference]: Start difference. First operand 1576 states and 7054 transitions. Second operand 11 states. [2020-01-16 18:07:15,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:15,460 INFO L93 Difference]: Finished difference Result 2943 states and 11700 transitions. [2020-01-16 18:07:15,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:15,461 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:15,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:15,469 INFO L225 Difference]: With dead ends: 2943 [2020-01-16 18:07:15,469 INFO L226 Difference]: Without dead ends: 2921 [2020-01-16 18:07:15,469 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:07:15,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2020-01-16 18:07:15,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 1571. [2020-01-16 18:07:15,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:07:15,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7040 transitions. [2020-01-16 18:07:15,535 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7040 transitions. Word has length 28 [2020-01-16 18:07:15,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:15,536 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7040 transitions. [2020-01-16 18:07:15,536 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:15,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7040 transitions. [2020-01-16 18:07:15,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:15,538 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:15,538 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:07:15,538 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 18:07:15,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:15,538 INFO L82 PathProgramCache]: Analyzing trace with hash 632784064, now seen corresponding path program 323 times [2020-01-16 18:07:15,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:15,538 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175850465] [2020-01-16 18:07:15,539 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:15,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:16,057 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 18:07:16,057 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175850465] [2020-01-16 18:07:16,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:16,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:16,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170896558] [2020-01-16 18:07:16,057 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:16,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:16,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:16,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:16,058 INFO L87 Difference]: Start difference. First operand 1571 states and 7040 transitions. Second operand 11 states. [2020-01-16 18:07:16,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:16,194 INFO L93 Difference]: Finished difference Result 2954 states and 11722 transitions. [2020-01-16 18:07:16,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:16,194 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:16,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:16,201 INFO L225 Difference]: With dead ends: 2954 [2020-01-16 18:07:16,202 INFO L226 Difference]: Without dead ends: 2934 [2020-01-16 18:07:16,202 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:07:16,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2934 states. [2020-01-16 18:07:16,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2934 to 1579. [2020-01-16 18:07:16,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:07:16,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7054 transitions. [2020-01-16 18:07:16,270 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7054 transitions. Word has length 28 [2020-01-16 18:07:16,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:16,270 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7054 transitions. [2020-01-16 18:07:16,271 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:16,271 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7054 transitions. [2020-01-16 18:07:16,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:16,273 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:16,273 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:07:16,273 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 18:07:16,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:16,273 INFO L82 PathProgramCache]: Analyzing trace with hash 806031756, now seen corresponding path program 324 times [2020-01-16 18:07:16,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:16,273 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489638467] [2020-01-16 18:07:16,273 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:16,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:16,805 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 18:07:16,806 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489638467] [2020-01-16 18:07:16,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:16,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:16,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103048780] [2020-01-16 18:07:16,806 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:16,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:16,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:16,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:16,807 INFO L87 Difference]: Start difference. First operand 1579 states and 7054 transitions. Second operand 11 states. [2020-01-16 18:07:16,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:16,991 INFO L93 Difference]: Finished difference Result 2951 states and 11709 transitions. [2020-01-16 18:07:16,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:16,991 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:16,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:16,999 INFO L225 Difference]: With dead ends: 2951 [2020-01-16 18:07:16,999 INFO L226 Difference]: Without dead ends: 2920 [2020-01-16 18:07:17,000 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 18:07:17,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2920 states. [2020-01-16 18:07:17,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2920 to 1565. [2020-01-16 18:07:17,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 18:07:17,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7024 transitions. [2020-01-16 18:07:17,069 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7024 transitions. Word has length 28 [2020-01-16 18:07:17,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:17,069 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7024 transitions. [2020-01-16 18:07:17,069 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:17,069 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7024 transitions. [2020-01-16 18:07:17,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:17,072 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:17,072 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:07:17,072 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 18:07:17,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:17,072 INFO L82 PathProgramCache]: Analyzing trace with hash -817234292, now seen corresponding path program 325 times [2020-01-16 18:07:17,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:17,072 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298278405] [2020-01-16 18:07:17,072 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:17,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:17,601 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 18:07:17,602 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298278405] [2020-01-16 18:07:17,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:17,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:17,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856409397] [2020-01-16 18:07:17,602 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:17,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:17,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:17,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:17,603 INFO L87 Difference]: Start difference. First operand 1565 states and 7024 transitions. Second operand 11 states. [2020-01-16 18:07:17,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:17,815 INFO L93 Difference]: Finished difference Result 2923 states and 11659 transitions. [2020-01-16 18:07:17,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:17,815 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:17,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:17,823 INFO L225 Difference]: With dead ends: 2923 [2020-01-16 18:07:17,823 INFO L226 Difference]: Without dead ends: 2908 [2020-01-16 18:07:17,823 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 18:07:17,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2020-01-16 18:07:17,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 1573. [2020-01-16 18:07:17,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:07:17,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7046 transitions. [2020-01-16 18:07:17,889 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7046 transitions. Word has length 28 [2020-01-16 18:07:17,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:17,890 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7046 transitions. [2020-01-16 18:07:17,890 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:17,890 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7046 transitions. [2020-01-16 18:07:17,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:17,892 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:17,892 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 18:07:17,892 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 18:07:17,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:17,892 INFO L82 PathProgramCache]: Analyzing trace with hash -643986600, now seen corresponding path program 326 times [2020-01-16 18:07:17,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:17,893 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237659771] [2020-01-16 18:07:17,893 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:17,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:18,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:07:18,416 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237659771] [2020-01-16 18:07:18,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:18,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:18,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541389931] [2020-01-16 18:07:18,417 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:18,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:18,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:18,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:18,417 INFO L87 Difference]: Start difference. First operand 1573 states and 7046 transitions. Second operand 11 states. [2020-01-16 18:07:18,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:18,605 INFO L93 Difference]: Finished difference Result 2922 states and 11653 transitions. [2020-01-16 18:07:18,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:18,606 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:18,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:18,613 INFO L225 Difference]: With dead ends: 2922 [2020-01-16 18:07:18,613 INFO L226 Difference]: Without dead ends: 2904 [2020-01-16 18:07:18,613 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 18:07:18,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2904 states. [2020-01-16 18:07:18,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2904 to 1569. [2020-01-16 18:07:18,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:07:18,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7035 transitions. [2020-01-16 18:07:18,681 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7035 transitions. Word has length 28 [2020-01-16 18:07:18,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:18,681 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7035 transitions. [2020-01-16 18:07:18,681 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:18,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7035 transitions. [2020-01-16 18:07:18,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:18,684 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:18,684 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 18:07:18,684 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 18:07:18,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:18,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1890319672, now seen corresponding path program 327 times [2020-01-16 18:07:18,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:18,684 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337541815] [2020-01-16 18:07:18,684 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:18,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:19,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:07:19,200 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337541815] [2020-01-16 18:07:19,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:19,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:19,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145170087] [2020-01-16 18:07:19,201 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:19,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:19,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:19,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:19,201 INFO L87 Difference]: Start difference. First operand 1569 states and 7035 transitions. Second operand 11 states. [2020-01-16 18:07:19,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:19,385 INFO L93 Difference]: Finished difference Result 2927 states and 11664 transitions. [2020-01-16 18:07:19,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:19,385 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:19,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:19,393 INFO L225 Difference]: With dead ends: 2927 [2020-01-16 18:07:19,393 INFO L226 Difference]: Without dead ends: 2912 [2020-01-16 18:07:19,393 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:07:19,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2912 states. [2020-01-16 18:07:19,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2912 to 1574. [2020-01-16 18:07:19,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:07:19,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7044 transitions. [2020-01-16 18:07:19,460 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7044 transitions. Word has length 28 [2020-01-16 18:07:19,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:19,460 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7044 transitions. [2020-01-16 18:07:19,460 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:19,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7044 transitions. [2020-01-16 18:07:19,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:19,462 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:19,462 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:07:19,462 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 18:07:19,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:19,462 INFO L82 PathProgramCache]: Analyzing trace with hash -227666984, now seen corresponding path program 328 times [2020-01-16 18:07:19,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:19,463 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528264465] [2020-01-16 18:07:19,463 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:19,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:19,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:07:19,983 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528264465] [2020-01-16 18:07:19,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:19,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:19,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990369810] [2020-01-16 18:07:19,984 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:19,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:19,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:19,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:19,984 INFO L87 Difference]: Start difference. First operand 1574 states and 7044 transitions. Second operand 11 states. [2020-01-16 18:07:20,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:20,188 INFO L93 Difference]: Finished difference Result 2929 states and 11663 transitions. [2020-01-16 18:07:20,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:20,189 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:20,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:20,196 INFO L225 Difference]: With dead ends: 2929 [2020-01-16 18:07:20,196 INFO L226 Difference]: Without dead ends: 2907 [2020-01-16 18:07:20,196 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:07:20,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2907 states. [2020-01-16 18:07:20,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2907 to 1569. [2020-01-16 18:07:20,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:07:20,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7031 transitions. [2020-01-16 18:07:20,264 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7031 transitions. Word has length 28 [2020-01-16 18:07:20,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:20,264 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7031 transitions. [2020-01-16 18:07:20,264 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:20,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7031 transitions. [2020-01-16 18:07:20,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:20,266 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:20,266 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:07:20,266 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 18:07:20,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:20,267 INFO L82 PathProgramCache]: Analyzing trace with hash -641360824, now seen corresponding path program 329 times [2020-01-16 18:07:20,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:20,267 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222420879] [2020-01-16 18:07:20,267 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:20,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:20,776 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 18:07:20,776 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222420879] [2020-01-16 18:07:20,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:20,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:20,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538748717] [2020-01-16 18:07:20,777 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:20,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:20,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:20,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:20,777 INFO L87 Difference]: Start difference. First operand 1569 states and 7031 transitions. Second operand 11 states. [2020-01-16 18:07:20,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:20,955 INFO L93 Difference]: Finished difference Result 2924 states and 11653 transitions. [2020-01-16 18:07:20,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:20,956 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:20,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:20,964 INFO L225 Difference]: With dead ends: 2924 [2020-01-16 18:07:20,964 INFO L226 Difference]: Without dead ends: 2910 [2020-01-16 18:07:20,964 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 18:07:21,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2910 states. [2020-01-16 18:07:21,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2910 to 1573. [2020-01-16 18:07:21,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:07:21,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7038 transitions. [2020-01-16 18:07:21,033 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7038 transitions. Word has length 28 [2020-01-16 18:07:21,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:21,033 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7038 transitions. [2020-01-16 18:07:21,033 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:21,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7038 transitions. [2020-01-16 18:07:21,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:21,036 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:21,036 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 18:07:21,036 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 18:07:21,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:21,036 INFO L82 PathProgramCache]: Analyzing trace with hash 848044172, now seen corresponding path program 330 times [2020-01-16 18:07:21,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:21,036 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092485328] [2020-01-16 18:07:21,036 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:21,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:21,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:07:21,553 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092485328] [2020-01-16 18:07:21,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:21,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:21,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683514791] [2020-01-16 18:07:21,554 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:21,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:21,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:21,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:21,554 INFO L87 Difference]: Start difference. First operand 1573 states and 7038 transitions. Second operand 11 states. [2020-01-16 18:07:21,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:21,728 INFO L93 Difference]: Finished difference Result 2927 states and 11655 transitions. [2020-01-16 18:07:21,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:21,728 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:21,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:21,735 INFO L225 Difference]: With dead ends: 2927 [2020-01-16 18:07:21,735 INFO L226 Difference]: Without dead ends: 2902 [2020-01-16 18:07:21,735 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 18:07:21,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2902 states. [2020-01-16 18:07:21,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2902 to 1565. [2020-01-16 18:07:21,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 18:07:21,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7020 transitions. [2020-01-16 18:07:21,802 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7020 transitions. Word has length 28 [2020-01-16 18:07:21,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:21,802 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7020 transitions. [2020-01-16 18:07:21,802 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:21,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7020 transitions. [2020-01-16 18:07:21,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:21,804 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:21,804 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 18:07:21,804 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 18:07:21,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:21,805 INFO L82 PathProgramCache]: Analyzing trace with hash 693176912, now seen corresponding path program 331 times [2020-01-16 18:07:21,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:21,805 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500728798] [2020-01-16 18:07:21,805 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:21,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:22,323 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 18:07:22,323 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500728798] [2020-01-16 18:07:22,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:22,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:22,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700466633] [2020-01-16 18:07:22,324 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:22,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:22,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:22,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:22,324 INFO L87 Difference]: Start difference. First operand 1565 states and 7020 transitions. Second operand 11 states. [2020-01-16 18:07:22,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:22,465 INFO L93 Difference]: Finished difference Result 2944 states and 11697 transitions. [2020-01-16 18:07:22,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:22,465 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:22,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:22,473 INFO L225 Difference]: With dead ends: 2944 [2020-01-16 18:07:22,473 INFO L226 Difference]: Without dead ends: 2924 [2020-01-16 18:07:22,473 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 18:07:22,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2924 states. [2020-01-16 18:07:22,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2924 to 1575. [2020-01-16 18:07:22,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:07:22,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7046 transitions. [2020-01-16 18:07:22,540 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7046 transitions. Word has length 28 [2020-01-16 18:07:22,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:22,540 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7046 transitions. [2020-01-16 18:07:22,540 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:22,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7046 transitions. [2020-01-16 18:07:22,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:22,543 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:22,543 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:07:22,543 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 18:07:22,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:22,544 INFO L82 PathProgramCache]: Analyzing trace with hash -622980392, now seen corresponding path program 332 times [2020-01-16 18:07:22,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:22,544 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962829745] [2020-01-16 18:07:22,544 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:22,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:23,053 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 18:07:23,054 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962829745] [2020-01-16 18:07:23,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:23,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:23,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591969458] [2020-01-16 18:07:23,054 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:23,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:23,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:23,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:23,055 INFO L87 Difference]: Start difference. First operand 1575 states and 7046 transitions. Second operand 11 states. [2020-01-16 18:07:23,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:23,227 INFO L93 Difference]: Finished difference Result 2938 states and 11681 transitions. [2020-01-16 18:07:23,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:23,228 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:23,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:23,234 INFO L225 Difference]: With dead ends: 2938 [2020-01-16 18:07:23,235 INFO L226 Difference]: Without dead ends: 2919 [2020-01-16 18:07:23,235 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 18:07:23,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2919 states. [2020-01-16 18:07:23,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2919 to 1570. [2020-01-16 18:07:23,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:07:23,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7033 transitions. [2020-01-16 18:07:23,301 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7033 transitions. Word has length 28 [2020-01-16 18:07:23,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:23,301 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7033 transitions. [2020-01-16 18:07:23,301 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:23,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7033 transitions. [2020-01-16 18:07:23,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:23,304 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:23,304 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:07:23,304 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 18:07:23,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:23,304 INFO L82 PathProgramCache]: Analyzing trace with hash -379908468, now seen corresponding path program 333 times [2020-01-16 18:07:23,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:23,304 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439029780] [2020-01-16 18:07:23,304 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:23,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:23,842 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 18:07:23,843 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439029780] [2020-01-16 18:07:23,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:23,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:23,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078820904] [2020-01-16 18:07:23,843 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:23,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:23,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:23,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:23,844 INFO L87 Difference]: Start difference. First operand 1570 states and 7033 transitions. Second operand 11 states. [2020-01-16 18:07:23,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:23,989 INFO L93 Difference]: Finished difference Result 2950 states and 11707 transitions. [2020-01-16 18:07:23,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:23,990 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:23,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:23,997 INFO L225 Difference]: With dead ends: 2950 [2020-01-16 18:07:23,997 INFO L226 Difference]: Without dead ends: 2930 [2020-01-16 18:07:23,998 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 18:07:24,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2020-01-16 18:07:24,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1578. [2020-01-16 18:07:24,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:07:24,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7047 transitions. [2020-01-16 18:07:24,064 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7047 transitions. Word has length 28 [2020-01-16 18:07:24,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:24,064 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7047 transitions. [2020-01-16 18:07:24,064 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:24,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7047 transitions. [2020-01-16 18:07:24,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:24,067 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:24,067 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 18:07:24,067 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 18:07:24,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:24,067 INFO L82 PathProgramCache]: Analyzing trace with hash -206660776, now seen corresponding path program 334 times [2020-01-16 18:07:24,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:24,067 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690227169] [2020-01-16 18:07:24,067 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:24,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:24,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:07:24,591 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690227169] [2020-01-16 18:07:24,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:24,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:24,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333559097] [2020-01-16 18:07:24,591 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:24,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:24,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:24,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:24,592 INFO L87 Difference]: Start difference. First operand 1578 states and 7047 transitions. Second operand 11 states. [2020-01-16 18:07:24,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:24,766 INFO L93 Difference]: Finished difference Result 2947 states and 11694 transitions. [2020-01-16 18:07:24,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:24,766 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:24,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:24,773 INFO L225 Difference]: With dead ends: 2947 [2020-01-16 18:07:24,774 INFO L226 Difference]: Without dead ends: 2922 [2020-01-16 18:07:24,774 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 18:07:24,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2922 states. [2020-01-16 18:07:24,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2922 to 1570. [2020-01-16 18:07:24,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:07:24,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7028 transitions. [2020-01-16 18:07:24,840 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7028 transitions. Word has length 28 [2020-01-16 18:07:24,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:24,840 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7028 transitions. [2020-01-16 18:07:24,840 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:24,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7028 transitions. [2020-01-16 18:07:24,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:24,842 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:24,842 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 18:07:24,843 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 18:07:24,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:24,843 INFO L82 PathProgramCache]: Analyzing trace with hash 452730764, now seen corresponding path program 335 times [2020-01-16 18:07:24,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:24,843 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515408814] [2020-01-16 18:07:24,843 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:24,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:25,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:07:25,359 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515408814] [2020-01-16 18:07:25,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:25,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:25,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918508009] [2020-01-16 18:07:25,360 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:25,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:25,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:25,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:25,360 INFO L87 Difference]: Start difference. First operand 1570 states and 7028 transitions. Second operand 11 states. [2020-01-16 18:07:25,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:25,599 INFO L93 Difference]: Finished difference Result 2934 states and 11669 transitions. [2020-01-16 18:07:25,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:25,599 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:25,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:25,607 INFO L225 Difference]: With dead ends: 2934 [2020-01-16 18:07:25,607 INFO L226 Difference]: Without dead ends: 2920 [2020-01-16 18:07:25,607 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 18:07:25,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2920 states. [2020-01-16 18:07:25,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2920 to 1574. [2020-01-16 18:07:25,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:07:25,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7035 transitions. [2020-01-16 18:07:25,674 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7035 transitions. Word has length 28 [2020-01-16 18:07:25,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:25,674 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7035 transitions. [2020-01-16 18:07:25,674 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:25,674 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7035 transitions. [2020-01-16 18:07:25,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:25,676 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:25,676 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 18:07:25,676 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 18:07:25,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:25,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1942135760, now seen corresponding path program 336 times [2020-01-16 18:07:25,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:25,677 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627320058] [2020-01-16 18:07:25,677 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:25,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:26,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:07:26,186 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627320058] [2020-01-16 18:07:26,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:26,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:26,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461802807] [2020-01-16 18:07:26,186 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:26,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:26,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:26,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:26,187 INFO L87 Difference]: Start difference. First operand 1574 states and 7035 transitions. Second operand 11 states. [2020-01-16 18:07:26,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:26,395 INFO L93 Difference]: Finished difference Result 2937 states and 11671 transitions. [2020-01-16 18:07:26,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:26,396 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:26,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:26,403 INFO L225 Difference]: With dead ends: 2937 [2020-01-16 18:07:26,403 INFO L226 Difference]: Without dead ends: 2906 [2020-01-16 18:07:26,403 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 18:07:26,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2906 states. [2020-01-16 18:07:26,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2906 to 1560. [2020-01-16 18:07:26,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1560 states. [2020-01-16 18:07:26,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1560 states to 1560 states and 7006 transitions. [2020-01-16 18:07:26,469 INFO L78 Accepts]: Start accepts. Automaton has 1560 states and 7006 transitions. Word has length 28 [2020-01-16 18:07:26,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:26,470 INFO L478 AbstractCegarLoop]: Abstraction has 1560 states and 7006 transitions. [2020-01-16 18:07:26,470 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:26,470 INFO L276 IsEmpty]: Start isEmpty. Operand 1560 states and 7006 transitions. [2020-01-16 18:07:26,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:26,472 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:26,472 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:07:26,472 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 18:07:26,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:26,472 INFO L82 PathProgramCache]: Analyzing trace with hash 727901384, now seen corresponding path program 337 times [2020-01-16 18:07:26,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:26,473 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851857076] [2020-01-16 18:07:26,473 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:26,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:26,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:07:26,990 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851857076] [2020-01-16 18:07:26,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:26,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:26,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059233437] [2020-01-16 18:07:26,991 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:26,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:26,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:26,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:26,991 INFO L87 Difference]: Start difference. First operand 1560 states and 7006 transitions. Second operand 11 states. [2020-01-16 18:07:27,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:27,201 INFO L93 Difference]: Finished difference Result 2946 states and 11716 transitions. [2020-01-16 18:07:27,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:27,201 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:27,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:27,208 INFO L225 Difference]: With dead ends: 2946 [2020-01-16 18:07:27,208 INFO L226 Difference]: Without dead ends: 2930 [2020-01-16 18:07:27,208 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 18:07:27,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2020-01-16 18:07:27,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1577. [2020-01-16 18:07:27,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:07:27,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7060 transitions. [2020-01-16 18:07:27,275 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7060 transitions. Word has length 28 [2020-01-16 18:07:27,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:27,275 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7060 transitions. [2020-01-16 18:07:27,275 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:27,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7060 transitions. [2020-01-16 18:07:27,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:27,278 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:27,278 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:07:27,278 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 18:07:27,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:27,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1472603882, now seen corresponding path program 338 times [2020-01-16 18:07:27,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:27,278 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827719015] [2020-01-16 18:07:27,278 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:27,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:27,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:07:27,794 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827719015] [2020-01-16 18:07:27,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:27,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:27,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989701914] [2020-01-16 18:07:27,794 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:27,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:27,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:27,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:27,795 INFO L87 Difference]: Start difference. First operand 1577 states and 7060 transitions. Second operand 11 states. [2020-01-16 18:07:27,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:27,952 INFO L93 Difference]: Finished difference Result 2950 states and 11717 transitions. [2020-01-16 18:07:27,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:27,952 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:27,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:27,959 INFO L225 Difference]: With dead ends: 2950 [2020-01-16 18:07:27,959 INFO L226 Difference]: Without dead ends: 2923 [2020-01-16 18:07:27,959 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:07:28,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2923 states. [2020-01-16 18:07:28,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2923 to 1570. [2020-01-16 18:07:28,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:07:28,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7042 transitions. [2020-01-16 18:07:28,026 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7042 transitions. Word has length 28 [2020-01-16 18:07:28,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:28,026 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7042 transitions. [2020-01-16 18:07:28,026 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:28,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7042 transitions. [2020-01-16 18:07:28,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:28,028 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:28,028 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:07:28,028 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 18:07:28,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:28,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1418269376, now seen corresponding path program 339 times [2020-01-16 18:07:28,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:28,029 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099497110] [2020-01-16 18:07:28,029 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:28,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:28,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:07:28,550 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099497110] [2020-01-16 18:07:28,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:28,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:28,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490583582] [2020-01-16 18:07:28,551 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:28,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:28,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:28,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:28,551 INFO L87 Difference]: Start difference. First operand 1570 states and 7042 transitions. Second operand 11 states. [2020-01-16 18:07:28,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:28,736 INFO L93 Difference]: Finished difference Result 2937 states and 11692 transitions. [2020-01-16 18:07:28,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:28,737 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:28,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:28,744 INFO L225 Difference]: With dead ends: 2937 [2020-01-16 18:07:28,744 INFO L226 Difference]: Without dead ends: 2921 [2020-01-16 18:07:28,744 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:07:28,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2020-01-16 18:07:28,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 1574. [2020-01-16 18:07:28,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:07:28,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7049 transitions. [2020-01-16 18:07:28,811 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7049 transitions. Word has length 28 [2020-01-16 18:07:28,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:28,811 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7049 transitions. [2020-01-16 18:07:28,811 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:28,811 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7049 transitions. [2020-01-16 18:07:28,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:28,813 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:28,813 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:07:28,814 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 18:07:28,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:28,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1989724182, now seen corresponding path program 340 times [2020-01-16 18:07:28,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:28,814 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166414582] [2020-01-16 18:07:28,814 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:28,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:29,332 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 18:07:29,332 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166414582] [2020-01-16 18:07:29,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:29,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:29,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370189749] [2020-01-16 18:07:29,333 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:29,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:29,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:29,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:29,333 INFO L87 Difference]: Start difference. First operand 1574 states and 7049 transitions. Second operand 11 states. [2020-01-16 18:07:29,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:29,527 INFO L93 Difference]: Finished difference Result 2935 states and 11684 transitions. [2020-01-16 18:07:29,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:29,527 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:29,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:29,534 INFO L225 Difference]: With dead ends: 2935 [2020-01-16 18:07:29,534 INFO L226 Difference]: Without dead ends: 2917 [2020-01-16 18:07:29,535 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 18:07:29,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2917 states. [2020-01-16 18:07:29,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2917 to 1570. [2020-01-16 18:07:29,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:07:29,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7038 transitions. [2020-01-16 18:07:29,601 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7038 transitions. Word has length 28 [2020-01-16 18:07:29,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:29,601 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7038 transitions. [2020-01-16 18:07:29,601 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:29,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7038 transitions. [2020-01-16 18:07:29,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:29,604 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:29,604 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 18:07:29,604 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 18:07:29,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:29,604 INFO L82 PathProgramCache]: Analyzing trace with hash 937374080, now seen corresponding path program 341 times [2020-01-16 18:07:29,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:29,604 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264252136] [2020-01-16 18:07:29,604 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:29,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:30,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:07:30,143 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264252136] [2020-01-16 18:07:30,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:30,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:30,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890111603] [2020-01-16 18:07:30,143 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:30,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:30,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:30,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:30,143 INFO L87 Difference]: Start difference. First operand 1570 states and 7038 transitions. Second operand 11 states. [2020-01-16 18:07:30,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:30,292 INFO L93 Difference]: Finished difference Result 2946 states and 11704 transitions. [2020-01-16 18:07:30,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:30,292 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:30,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:30,300 INFO L225 Difference]: With dead ends: 2946 [2020-01-16 18:07:30,300 INFO L226 Difference]: Without dead ends: 2926 [2020-01-16 18:07:30,300 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 18:07:30,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2020-01-16 18:07:30,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 1575. [2020-01-16 18:07:30,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:07:30,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7046 transitions. [2020-01-16 18:07:30,367 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7046 transitions. Word has length 28 [2020-01-16 18:07:30,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:30,367 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7046 transitions. [2020-01-16 18:07:30,367 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:30,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7046 transitions. [2020-01-16 18:07:30,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:30,369 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:30,369 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:07:30,369 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 18:07:30,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:30,370 INFO L82 PathProgramCache]: Analyzing trace with hash -378783224, now seen corresponding path program 342 times [2020-01-16 18:07:30,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:30,370 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311904454] [2020-01-16 18:07:30,370 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:30,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:30,875 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 18:07:30,876 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311904454] [2020-01-16 18:07:30,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:30,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:30,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99569172] [2020-01-16 18:07:30,876 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:30,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:30,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:30,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:30,877 INFO L87 Difference]: Start difference. First operand 1575 states and 7046 transitions. Second operand 11 states. [2020-01-16 18:07:31,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:31,110 INFO L93 Difference]: Finished difference Result 2940 states and 11688 transitions. [2020-01-16 18:07:31,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:31,110 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:31,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:31,118 INFO L225 Difference]: With dead ends: 2940 [2020-01-16 18:07:31,119 INFO L226 Difference]: Without dead ends: 2916 [2020-01-16 18:07:31,119 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 18:07:31,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2020-01-16 18:07:31,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 1565. [2020-01-16 18:07:31,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 18:07:31,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7024 transitions. [2020-01-16 18:07:31,188 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7024 transitions. Word has length 28 [2020-01-16 18:07:31,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:31,188 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7024 transitions. [2020-01-16 18:07:31,188 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:31,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7024 transitions. [2020-01-16 18:07:31,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:31,190 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:31,190 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:07:31,191 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 18:07:31,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:31,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1821992972, now seen corresponding path program 343 times [2020-01-16 18:07:31,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:31,191 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966147504] [2020-01-16 18:07:31,191 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:31,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:31,713 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 18:07:31,713 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966147504] [2020-01-16 18:07:31,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:31,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:31,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461942592] [2020-01-16 18:07:31,713 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:31,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:31,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:31,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:31,714 INFO L87 Difference]: Start difference. First operand 1565 states and 7024 transitions. Second operand 11 states. [2020-01-16 18:07:31,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:31,904 INFO L93 Difference]: Finished difference Result 2956 states and 11740 transitions. [2020-01-16 18:07:31,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:31,905 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:31,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:31,912 INFO L225 Difference]: With dead ends: 2956 [2020-01-16 18:07:31,912 INFO L226 Difference]: Without dead ends: 2940 [2020-01-16 18:07:31,913 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 18:07:31,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2940 states. [2020-01-16 18:07:31,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2940 to 1579. [2020-01-16 18:07:31,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:07:31,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7063 transitions. [2020-01-16 18:07:31,980 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7063 transitions. Word has length 28 [2020-01-16 18:07:31,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:31,980 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7063 transitions. [2020-01-16 18:07:31,980 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:31,980 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7063 transitions. [2020-01-16 18:07:31,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:31,982 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:31,982 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 18:07:31,982 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 18:07:31,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:31,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1728271826, now seen corresponding path program 344 times [2020-01-16 18:07:31,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:31,983 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742771030] [2020-01-16 18:07:31,983 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:31,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:32,505 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 18:07:32,505 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742771030] [2020-01-16 18:07:32,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:32,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:32,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175040500] [2020-01-16 18:07:32,506 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:32,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:32,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:32,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:32,506 INFO L87 Difference]: Start difference. First operand 1579 states and 7063 transitions. Second operand 11 states. [2020-01-16 18:07:32,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:32,667 INFO L93 Difference]: Finished difference Result 2960 states and 11741 transitions. [2020-01-16 18:07:32,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:32,667 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:32,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:32,675 INFO L225 Difference]: With dead ends: 2960 [2020-01-16 18:07:32,675 INFO L226 Difference]: Without dead ends: 2933 [2020-01-16 18:07:32,675 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 18:07:32,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2933 states. [2020-01-16 18:07:32,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2933 to 1572. [2020-01-16 18:07:32,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:07:32,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7043 transitions. [2020-01-16 18:07:32,741 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7043 transitions. Word has length 28 [2020-01-16 18:07:32,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:32,742 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7043 transitions. [2020-01-16 18:07:32,742 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:32,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7043 transitions. [2020-01-16 18:07:32,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:32,744 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:32,744 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 18:07:32,744 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 18:07:32,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:32,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1397263168, now seen corresponding path program 345 times [2020-01-16 18:07:32,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:32,744 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811661857] [2020-01-16 18:07:32,745 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:32,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:33,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:07:33,268 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811661857] [2020-01-16 18:07:33,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:33,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:33,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277852132] [2020-01-16 18:07:33,268 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:33,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:33,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:33,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:33,269 INFO L87 Difference]: Start difference. First operand 1572 states and 7043 transitions. Second operand 11 states. [2020-01-16 18:07:33,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:33,460 INFO L93 Difference]: Finished difference Result 2952 states and 11726 transitions. [2020-01-16 18:07:33,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:33,460 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:33,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:33,468 INFO L225 Difference]: With dead ends: 2952 [2020-01-16 18:07:33,468 INFO L226 Difference]: Without dead ends: 2936 [2020-01-16 18:07:33,468 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 18:07:33,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2936 states. [2020-01-16 18:07:33,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2936 to 1578. [2020-01-16 18:07:33,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:07:33,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7054 transitions. [2020-01-16 18:07:33,536 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7054 transitions. Word has length 28 [2020-01-16 18:07:33,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:33,536 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7054 transitions. [2020-01-16 18:07:33,536 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:33,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7054 transitions. [2020-01-16 18:07:33,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:33,538 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:33,538 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:07:33,538 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 18:07:33,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:33,538 INFO L82 PathProgramCache]: Analyzing trace with hash -479312978, now seen corresponding path program 346 times [2020-01-16 18:07:33,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:33,539 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643732763] [2020-01-16 18:07:33,539 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:33,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:34,066 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:07:34,073 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 18:07:34,073 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643732763] [2020-01-16 18:07:34,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:34,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:34,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274487563] [2020-01-16 18:07:34,074 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:34,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:34,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:34,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:34,074 INFO L87 Difference]: Start difference. First operand 1578 states and 7054 transitions. Second operand 11 states. [2020-01-16 18:07:34,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:34,286 INFO L93 Difference]: Finished difference Result 2953 states and 11722 transitions. [2020-01-16 18:07:34,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:34,287 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:34,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:34,295 INFO L225 Difference]: With dead ends: 2953 [2020-01-16 18:07:34,295 INFO L226 Difference]: Without dead ends: 2930 [2020-01-16 18:07:34,295 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:07:34,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2020-01-16 18:07:34,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1572. [2020-01-16 18:07:34,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:07:34,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7037 transitions. [2020-01-16 18:07:34,363 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7037 transitions. Word has length 28 [2020-01-16 18:07:34,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:34,363 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7037 transitions. [2020-01-16 18:07:34,363 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:34,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7037 transitions. [2020-01-16 18:07:34,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:34,365 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:34,365 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 18:07:34,365 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 18:07:34,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:34,366 INFO L82 PathProgramCache]: Analyzing trace with hash 958380288, now seen corresponding path program 347 times [2020-01-16 18:07:34,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:34,366 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966385770] [2020-01-16 18:07:34,366 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:34,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:34,903 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 18:07:34,904 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966385770] [2020-01-16 18:07:34,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:34,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:34,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595669423] [2020-01-16 18:07:34,904 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:34,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:34,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:34,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:34,905 INFO L87 Difference]: Start difference. First operand 1572 states and 7037 transitions. Second operand 11 states. [2020-01-16 18:07:35,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:35,060 INFO L93 Difference]: Finished difference Result 2962 states and 11739 transitions. [2020-01-16 18:07:35,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:35,061 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:35,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:35,068 INFO L225 Difference]: With dead ends: 2962 [2020-01-16 18:07:35,068 INFO L226 Difference]: Without dead ends: 2942 [2020-01-16 18:07:35,068 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 18:07:35,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2020-01-16 18:07:35,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 1580. [2020-01-16 18:07:35,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:07:35,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7051 transitions. [2020-01-16 18:07:35,137 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7051 transitions. Word has length 28 [2020-01-16 18:07:35,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:35,137 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7051 transitions. [2020-01-16 18:07:35,137 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:35,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7051 transitions. [2020-01-16 18:07:35,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:35,139 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:35,139 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 18:07:35,139 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 18:07:35,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:35,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1131627980, now seen corresponding path program 348 times [2020-01-16 18:07:35,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:35,140 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147180766] [2020-01-16 18:07:35,140 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:35,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:35,668 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 18:07:35,669 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147180766] [2020-01-16 18:07:35,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:35,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:35,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976947832] [2020-01-16 18:07:35,669 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:35,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:35,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:35,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:35,670 INFO L87 Difference]: Start difference. First operand 1580 states and 7051 transitions. Second operand 11 states. [2020-01-16 18:07:35,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:35,842 INFO L93 Difference]: Finished difference Result 2959 states and 11726 transitions. [2020-01-16 18:07:35,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:35,843 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:35,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:35,850 INFO L225 Difference]: With dead ends: 2959 [2020-01-16 18:07:35,851 INFO L226 Difference]: Without dead ends: 2927 [2020-01-16 18:07:35,851 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:07:35,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2927 states. [2020-01-16 18:07:35,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2927 to 1565. [2020-01-16 18:07:35,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 18:07:35,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7019 transitions. [2020-01-16 18:07:35,927 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7019 transitions. Word has length 28 [2020-01-16 18:07:35,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:35,927 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7019 transitions. [2020-01-16 18:07:35,927 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:35,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7019 transitions. [2020-01-16 18:07:35,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:35,929 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:35,929 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 18:07:35,929 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 18:07:35,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:35,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1864005388, now seen corresponding path program 349 times [2020-01-16 18:07:35,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:35,930 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633006892] [2020-01-16 18:07:35,930 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:35,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:36,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:07:36,446 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633006892] [2020-01-16 18:07:36,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:36,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:36,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161200178] [2020-01-16 18:07:36,446 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:36,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:36,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:36,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:36,447 INFO L87 Difference]: Start difference. First operand 1565 states and 7019 transitions. Second operand 11 states. [2020-01-16 18:07:36,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:36,646 INFO L93 Difference]: Finished difference Result 2931 states and 11675 transitions. [2020-01-16 18:07:36,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:36,647 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:36,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:36,654 INFO L225 Difference]: With dead ends: 2931 [2020-01-16 18:07:36,655 INFO L226 Difference]: Without dead ends: 2915 [2020-01-16 18:07:36,655 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 18:07:36,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2915 states. [2020-01-16 18:07:36,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2915 to 1573. [2020-01-16 18:07:36,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:07:36,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7041 transitions. [2020-01-16 18:07:36,720 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7041 transitions. Word has length 28 [2020-01-16 18:07:36,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:36,720 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7041 transitions. [2020-01-16 18:07:36,721 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:36,721 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7041 transitions. [2020-01-16 18:07:36,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:36,723 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:36,723 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 18:07:36,723 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 18:07:36,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:36,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1292550582, now seen corresponding path program 350 times [2020-01-16 18:07:36,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:36,723 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948691500] [2020-01-16 18:07:36,723 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:36,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:37,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:07:37,236 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948691500] [2020-01-16 18:07:37,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:37,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:37,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694606247] [2020-01-16 18:07:37,237 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:37,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:37,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:37,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:37,237 INFO L87 Difference]: Start difference. First operand 1573 states and 7041 transitions. Second operand 11 states. [2020-01-16 18:07:37,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:37,414 INFO L93 Difference]: Finished difference Result 2929 states and 11667 transitions. [2020-01-16 18:07:37,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:37,414 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:37,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:37,421 INFO L225 Difference]: With dead ends: 2929 [2020-01-16 18:07:37,422 INFO L226 Difference]: Without dead ends: 2911 [2020-01-16 18:07:37,422 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 18:07:37,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2020-01-16 18:07:37,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 1569. [2020-01-16 18:07:37,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:07:37,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7030 transitions. [2020-01-16 18:07:37,488 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7030 transitions. Word has length 28 [2020-01-16 18:07:37,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:37,489 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7030 transitions. [2020-01-16 18:07:37,489 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:37,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7030 transitions. [2020-01-16 18:07:37,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:37,491 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:37,491 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 18:07:37,491 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 18:07:37,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:37,491 INFO L82 PathProgramCache]: Analyzing trace with hash 790920008, now seen corresponding path program 351 times [2020-01-16 18:07:37,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:37,491 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899412143] [2020-01-16 18:07:37,492 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:37,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:38,006 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 18:07:38,007 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899412143] [2020-01-16 18:07:38,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:38,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:38,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807842123] [2020-01-16 18:07:38,007 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:38,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:38,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:38,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:38,008 INFO L87 Difference]: Start difference. First operand 1569 states and 7030 transitions. Second operand 11 states. [2020-01-16 18:07:38,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:38,188 INFO L93 Difference]: Finished difference Result 2936 states and 11683 transitions. [2020-01-16 18:07:38,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:38,188 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:38,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:38,195 INFO L225 Difference]: With dead ends: 2936 [2020-01-16 18:07:38,196 INFO L226 Difference]: Without dead ends: 2920 [2020-01-16 18:07:38,196 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:07:38,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2920 states. [2020-01-16 18:07:38,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2920 to 1575. [2020-01-16 18:07:38,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:07:38,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7041 transitions. [2020-01-16 18:07:38,262 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7041 transitions. Word has length 28 [2020-01-16 18:07:38,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:38,262 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7041 transitions. [2020-01-16 18:07:38,262 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:38,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7041 transitions. [2020-01-16 18:07:38,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:38,265 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:38,265 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:07:38,265 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 18:07:38,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:38,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1708870198, now seen corresponding path program 352 times [2020-01-16 18:07:38,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:38,265 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738939362] [2020-01-16 18:07:38,265 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:38,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:38,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:07:38,788 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738939362] [2020-01-16 18:07:38,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:38,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:38,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158988602] [2020-01-16 18:07:38,789 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:38,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:38,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:38,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:38,789 INFO L87 Difference]: Start difference. First operand 1575 states and 7041 transitions. Second operand 11 states. [2020-01-16 18:07:38,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:38,977 INFO L93 Difference]: Finished difference Result 2937 states and 11679 transitions. [2020-01-16 18:07:38,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:38,977 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:38,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:38,984 INFO L225 Difference]: With dead ends: 2937 [2020-01-16 18:07:38,984 INFO L226 Difference]: Without dead ends: 2914 [2020-01-16 18:07:38,984 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 18:07:39,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2914 states. [2020-01-16 18:07:39,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2914 to 1569. [2020-01-16 18:07:39,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:07:39,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7026 transitions. [2020-01-16 18:07:39,051 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7026 transitions. Word has length 28 [2020-01-16 18:07:39,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:39,051 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7026 transitions. [2020-01-16 18:07:39,051 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:39,051 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7026 transitions. [2020-01-16 18:07:39,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:39,053 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:39,054 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 18:07:39,054 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 18:07:39,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:39,054 INFO L82 PathProgramCache]: Analyzing trace with hash -315764600, now seen corresponding path program 353 times [2020-01-16 18:07:39,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:39,054 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538541886] [2020-01-16 18:07:39,054 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:39,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:39,573 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 18:07:39,574 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538541886] [2020-01-16 18:07:39,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:39,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:39,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251266834] [2020-01-16 18:07:39,574 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:39,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:39,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:39,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:39,574 INFO L87 Difference]: Start difference. First operand 1569 states and 7026 transitions. Second operand 11 states. [2020-01-16 18:07:39,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:39,782 INFO L93 Difference]: Finished difference Result 2930 states and 11665 transitions. [2020-01-16 18:07:39,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:39,782 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:39,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:39,789 INFO L225 Difference]: With dead ends: 2930 [2020-01-16 18:07:39,789 INFO L226 Difference]: Without dead ends: 2916 [2020-01-16 18:07:39,789 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 18:07:39,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2020-01-16 18:07:39,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 1573. [2020-01-16 18:07:39,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:07:39,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7033 transitions. [2020-01-16 18:07:39,856 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7033 transitions. Word has length 28 [2020-01-16 18:07:39,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:39,856 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7033 transitions. [2020-01-16 18:07:39,856 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:39,856 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7033 transitions. [2020-01-16 18:07:39,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:39,858 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:39,858 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:07:39,858 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 18:07:39,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:39,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1173640396, now seen corresponding path program 354 times [2020-01-16 18:07:39,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:39,859 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708243382] [2020-01-16 18:07:39,859 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:39,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:40,381 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 18:07:40,381 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708243382] [2020-01-16 18:07:40,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:40,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:40,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033161699] [2020-01-16 18:07:40,382 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:40,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:40,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:40,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:40,382 INFO L87 Difference]: Start difference. First operand 1573 states and 7033 transitions. Second operand 11 states. [2020-01-16 18:07:40,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:40,565 INFO L93 Difference]: Finished difference Result 2933 states and 11667 transitions. [2020-01-16 18:07:40,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:40,566 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:40,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:40,573 INFO L225 Difference]: With dead ends: 2933 [2020-01-16 18:07:40,573 INFO L226 Difference]: Without dead ends: 2908 [2020-01-16 18:07:40,573 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:07:40,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2020-01-16 18:07:40,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 1565. [2020-01-16 18:07:40,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 18:07:40,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7015 transitions. [2020-01-16 18:07:40,640 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7015 transitions. Word has length 28 [2020-01-16 18:07:40,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:40,641 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7015 transitions. [2020-01-16 18:07:40,641 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:40,641 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7015 transitions. [2020-01-16 18:07:40,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:40,643 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:40,643 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 18:07:40,643 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 18:07:40,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:40,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1675756306, now seen corresponding path program 355 times [2020-01-16 18:07:40,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:40,644 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564005087] [2020-01-16 18:07:40,644 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:40,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:41,176 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:07:41,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:07:41,183 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564005087] [2020-01-16 18:07:41,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:41,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:41,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355739488] [2020-01-16 18:07:41,183 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:41,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:41,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:41,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:41,184 INFO L87 Difference]: Start difference. First operand 1565 states and 7015 transitions. Second operand 11 states. [2020-01-16 18:07:41,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:41,315 INFO L93 Difference]: Finished difference Result 2948 states and 11704 transitions. [2020-01-16 18:07:41,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:41,316 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:41,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:41,323 INFO L225 Difference]: With dead ends: 2948 [2020-01-16 18:07:41,323 INFO L226 Difference]: Without dead ends: 2928 [2020-01-16 18:07:41,324 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 18:07:41,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2020-01-16 18:07:41,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 1575. [2020-01-16 18:07:41,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:07:41,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7041 transitions. [2020-01-16 18:07:41,394 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7041 transitions. Word has length 28 [2020-01-16 18:07:41,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:41,395 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7041 transitions. [2020-01-16 18:07:41,395 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:41,395 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7041 transitions. [2020-01-16 18:07:41,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:41,397 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:41,397 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 18:07:41,397 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 18:07:41,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:41,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1303053686, now seen corresponding path program 356 times [2020-01-16 18:07:41,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:41,398 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165315871] [2020-01-16 18:07:41,398 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:41,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:41,923 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 18:07:41,923 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165315871] [2020-01-16 18:07:41,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:41,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:41,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930852102] [2020-01-16 18:07:41,924 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:41,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:41,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:41,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:41,924 INFO L87 Difference]: Start difference. First operand 1575 states and 7041 transitions. Second operand 11 states. [2020-01-16 18:07:42,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:42,110 INFO L93 Difference]: Finished difference Result 2942 states and 11688 transitions. [2020-01-16 18:07:42,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:42,111 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:42,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:42,118 INFO L225 Difference]: With dead ends: 2942 [2020-01-16 18:07:42,118 INFO L226 Difference]: Without dead ends: 2923 [2020-01-16 18:07:42,118 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 18:07:42,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2923 states. [2020-01-16 18:07:42,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2923 to 1570. [2020-01-16 18:07:42,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:07:42,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7028 transitions. [2020-01-16 18:07:42,205 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7028 transitions. Word has length 28 [2020-01-16 18:07:42,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:42,205 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7028 transitions. [2020-01-16 18:07:42,205 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:42,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7028 transitions. [2020-01-16 18:07:42,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:42,208 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:42,208 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 18:07:42,208 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 18:07:42,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:42,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1546125610, now seen corresponding path program 357 times [2020-01-16 18:07:42,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:42,208 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063827749] [2020-01-16 18:07:42,209 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:42,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:42,738 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 18:07:42,738 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063827749] [2020-01-16 18:07:42,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:42,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:42,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312167074] [2020-01-16 18:07:42,739 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:42,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:42,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:42,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:42,739 INFO L87 Difference]: Start difference. First operand 1570 states and 7028 transitions. Second operand 11 states. [2020-01-16 18:07:42,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:42,903 INFO L93 Difference]: Finished difference Result 2954 states and 11714 transitions. [2020-01-16 18:07:42,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:42,903 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:42,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:42,911 INFO L225 Difference]: With dead ends: 2954 [2020-01-16 18:07:42,911 INFO L226 Difference]: Without dead ends: 2934 [2020-01-16 18:07:42,911 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 18:07:42,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2934 states. [2020-01-16 18:07:42,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2934 to 1578. [2020-01-16 18:07:42,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:07:42,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7042 transitions. [2020-01-16 18:07:42,979 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7042 transitions. Word has length 28 [2020-01-16 18:07:42,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:42,979 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7042 transitions. [2020-01-16 18:07:42,979 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:42,979 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7042 transitions. [2020-01-16 18:07:42,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:42,981 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:42,981 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 18:07:42,981 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 18:07:42,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:42,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1719373302, now seen corresponding path program 358 times [2020-01-16 18:07:42,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:42,982 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337122950] [2020-01-16 18:07:42,982 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:42,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:43,510 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 18:07:43,510 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337122950] [2020-01-16 18:07:43,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:43,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:43,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051026030] [2020-01-16 18:07:43,511 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:43,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:43,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:43,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:43,511 INFO L87 Difference]: Start difference. First operand 1578 states and 7042 transitions. Second operand 11 states. [2020-01-16 18:07:43,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:43,729 INFO L93 Difference]: Finished difference Result 2951 states and 11701 transitions. [2020-01-16 18:07:43,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:43,730 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:43,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:43,737 INFO L225 Difference]: With dead ends: 2951 [2020-01-16 18:07:43,738 INFO L226 Difference]: Without dead ends: 2926 [2020-01-16 18:07:43,738 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:07:43,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2020-01-16 18:07:43,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 1570. [2020-01-16 18:07:43,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:07:43,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7023 transitions. [2020-01-16 18:07:43,807 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7023 transitions. Word has length 28 [2020-01-16 18:07:43,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:43,807 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7023 transitions. [2020-01-16 18:07:43,807 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:43,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7023 transitions. [2020-01-16 18:07:43,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:43,809 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:43,809 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:07:43,809 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 18:07:43,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:43,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1916202454, now seen corresponding path program 359 times [2020-01-16 18:07:43,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:43,810 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027943312] [2020-01-16 18:07:43,810 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:43,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:44,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:07:44,330 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027943312] [2020-01-16 18:07:44,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:44,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:44,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323614501] [2020-01-16 18:07:44,331 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:44,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:44,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:44,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:44,331 INFO L87 Difference]: Start difference. First operand 1570 states and 7023 transitions. Second operand 11 states. [2020-01-16 18:07:44,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:44,510 INFO L93 Difference]: Finished difference Result 2938 states and 11676 transitions. [2020-01-16 18:07:44,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:44,510 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:44,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:44,518 INFO L225 Difference]: With dead ends: 2938 [2020-01-16 18:07:44,518 INFO L226 Difference]: Without dead ends: 2924 [2020-01-16 18:07:44,518 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 18:07:44,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2924 states. [2020-01-16 18:07:44,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2924 to 1574. [2020-01-16 18:07:44,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:07:44,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7030 transitions. [2020-01-16 18:07:44,585 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7030 transitions. Word has length 28 [2020-01-16 18:07:44,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:44,585 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7030 transitions. [2020-01-16 18:07:44,585 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:44,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7030 transitions. [2020-01-16 18:07:44,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:44,588 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:44,588 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 18:07:44,588 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 18:07:44,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:44,588 INFO L82 PathProgramCache]: Analyzing trace with hash -426797458, now seen corresponding path program 360 times [2020-01-16 18:07:44,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:44,588 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643418027] [2020-01-16 18:07:44,588 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:44,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:45,111 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 18:07:45,111 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643418027] [2020-01-16 18:07:45,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:45,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:45,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136379081] [2020-01-16 18:07:45,112 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:45,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:45,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:45,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:45,112 INFO L87 Difference]: Start difference. First operand 1574 states and 7030 transitions. Second operand 11 states. [2020-01-16 18:07:45,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:45,330 INFO L93 Difference]: Finished difference Result 2941 states and 11678 transitions. [2020-01-16 18:07:45,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:45,330 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:45,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:45,338 INFO L225 Difference]: With dead ends: 2941 [2020-01-16 18:07:45,338 INFO L226 Difference]: Without dead ends: 2905 [2020-01-16 18:07:45,338 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:07:45,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2905 states. [2020-01-16 18:07:45,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2905 to 1555. [2020-01-16 18:07:45,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1555 states. [2020-01-16 18:07:45,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 6992 transitions. [2020-01-16 18:07:45,405 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 6992 transitions. Word has length 28 [2020-01-16 18:07:45,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:45,406 INFO L478 AbstractCegarLoop]: Abstraction has 1555 states and 6992 transitions. [2020-01-16 18:07:45,406 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:45,406 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 6992 transitions. [2020-01-16 18:07:45,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:45,408 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:45,408 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 18:07:45,408 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 18:07:45,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:45,408 INFO L82 PathProgramCache]: Analyzing trace with hash 313455144, now seen corresponding path program 361 times [2020-01-16 18:07:45,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:45,409 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870485733] [2020-01-16 18:07:45,409 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:45,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:45,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:07:45,939 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870485733] [2020-01-16 18:07:45,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:45,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:45,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320055354] [2020-01-16 18:07:45,939 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:45,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:45,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:45,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:45,940 INFO L87 Difference]: Start difference. First operand 1555 states and 6992 transitions. Second operand 11 states. [2020-01-16 18:07:46,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:46,161 INFO L93 Difference]: Finished difference Result 2905 states and 11627 transitions. [2020-01-16 18:07:46,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:46,161 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:46,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:46,168 INFO L225 Difference]: With dead ends: 2905 [2020-01-16 18:07:46,168 INFO L226 Difference]: Without dead ends: 2890 [2020-01-16 18:07:46,168 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:07:46,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2890 states. [2020-01-16 18:07:46,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2890 to 1573. [2020-01-16 18:07:46,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:07:46,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7062 transitions. [2020-01-16 18:07:46,236 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7062 transitions. Word has length 28 [2020-01-16 18:07:46,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:46,236 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7062 transitions. [2020-01-16 18:07:46,236 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:46,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7062 transitions. [2020-01-16 18:07:46,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:46,239 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:46,239 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 18:07:46,239 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 18:07:46,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:46,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1058157642, now seen corresponding path program 362 times [2020-01-16 18:07:46,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:46,240 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088699765] [2020-01-16 18:07:46,240 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:46,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:46,771 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:07:46,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:07:46,778 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088699765] [2020-01-16 18:07:46,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:46,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:46,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734170307] [2020-01-16 18:07:46,778 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:46,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:46,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:46,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:46,779 INFO L87 Difference]: Start difference. First operand 1573 states and 7062 transitions. Second operand 11 states. [2020-01-16 18:07:46,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:46,990 INFO L93 Difference]: Finished difference Result 2906 states and 11624 transitions. [2020-01-16 18:07:46,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:46,991 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:46,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:46,998 INFO L225 Difference]: With dead ends: 2906 [2020-01-16 18:07:46,998 INFO L226 Difference]: Without dead ends: 2885 [2020-01-16 18:07:46,998 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 18:07:47,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2885 states. [2020-01-16 18:07:47,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2885 to 1568. [2020-01-16 18:07:47,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 18:07:47,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7048 transitions. [2020-01-16 18:07:47,065 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7048 transitions. Word has length 28 [2020-01-16 18:07:47,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:47,065 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7048 transitions. [2020-01-16 18:07:47,065 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:47,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7048 transitions. [2020-01-16 18:07:47,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:47,068 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:47,068 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 18:07:47,068 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 18:07:47,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:47,068 INFO L82 PathProgramCache]: Analyzing trace with hash -759630236, now seen corresponding path program 363 times [2020-01-16 18:07:47,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:47,068 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700126535] [2020-01-16 18:07:47,068 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:47,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:47,597 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 18:07:47,597 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700126535] [2020-01-16 18:07:47,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:47,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:47,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651867114] [2020-01-16 18:07:47,598 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:47,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:47,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:47,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:47,598 INFO L87 Difference]: Start difference. First operand 1568 states and 7048 transitions. Second operand 11 states. [2020-01-16 18:07:47,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:47,846 INFO L93 Difference]: Finished difference Result 2907 states and 11626 transitions. [2020-01-16 18:07:47,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:47,847 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:47,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:47,854 INFO L225 Difference]: With dead ends: 2907 [2020-01-16 18:07:47,854 INFO L226 Difference]: Without dead ends: 2892 [2020-01-16 18:07:47,854 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 18:07:47,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2892 states. [2020-01-16 18:07:47,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2892 to 1573. [2020-01-16 18:07:47,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:07:47,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7057 transitions. [2020-01-16 18:07:47,920 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7057 transitions. Word has length 28 [2020-01-16 18:07:47,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:47,920 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7057 transitions. [2020-01-16 18:07:47,920 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:47,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7057 transitions. [2020-01-16 18:07:47,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:47,923 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:47,923 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 18:07:47,923 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 18:07:47,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:47,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1474477258, now seen corresponding path program 364 times [2020-01-16 18:07:47,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:47,923 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50315602] [2020-01-16 18:07:47,923 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:47,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:48,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:07:48,438 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50315602] [2020-01-16 18:07:48,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:48,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:48,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87096880] [2020-01-16 18:07:48,438 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:48,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:48,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:48,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:48,439 INFO L87 Difference]: Start difference. First operand 1573 states and 7057 transitions. Second operand 11 states. [2020-01-16 18:07:48,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:48,656 INFO L93 Difference]: Finished difference Result 2910 states and 11627 transitions. [2020-01-16 18:07:48,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:48,656 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:48,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:48,663 INFO L225 Difference]: With dead ends: 2910 [2020-01-16 18:07:48,663 INFO L226 Difference]: Without dead ends: 2887 [2020-01-16 18:07:48,663 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 18:07:48,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2887 states. [2020-01-16 18:07:48,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2887 to 1568. [2020-01-16 18:07:48,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 18:07:48,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7043 transitions. [2020-01-16 18:07:48,730 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7043 transitions. Word has length 28 [2020-01-16 18:07:48,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:48,730 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7043 transitions. [2020-01-16 18:07:48,730 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:48,730 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7043 transitions. [2020-01-16 18:07:48,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:48,732 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:48,732 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:07:48,732 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 18:07:48,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:48,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1596013220, now seen corresponding path program 365 times [2020-01-16 18:07:48,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:48,733 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264475084] [2020-01-16 18:07:48,733 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:48,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:49,231 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:07:49,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:07:49,238 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264475084] [2020-01-16 18:07:49,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:49,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:49,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445260191] [2020-01-16 18:07:49,239 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:49,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:49,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:49,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:49,239 INFO L87 Difference]: Start difference. First operand 1568 states and 7043 transitions. Second operand 11 states. [2020-01-16 18:07:49,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:49,477 INFO L93 Difference]: Finished difference Result 2910 states and 11628 transitions. [2020-01-16 18:07:49,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:49,478 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:49,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:49,485 INFO L225 Difference]: With dead ends: 2910 [2020-01-16 18:07:49,486 INFO L226 Difference]: Without dead ends: 2894 [2020-01-16 18:07:49,486 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:07:49,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2020-01-16 18:07:49,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 1574. [2020-01-16 18:07:49,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:07:49,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7054 transitions. [2020-01-16 18:07:49,552 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7054 transitions. Word has length 28 [2020-01-16 18:07:49,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:49,552 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7054 transitions. [2020-01-16 18:07:49,552 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:49,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7054 transitions. [2020-01-16 18:07:49,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:49,555 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:49,555 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:07:49,555 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 18:07:49,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:49,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1209549080, now seen corresponding path program 366 times [2020-01-16 18:07:49,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:49,555 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169796567] [2020-01-16 18:07:49,555 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:49,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:50,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:07:50,068 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169796567] [2020-01-16 18:07:50,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:50,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:50,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153839718] [2020-01-16 18:07:50,069 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:50,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:50,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:50,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:50,069 INFO L87 Difference]: Start difference. First operand 1574 states and 7054 transitions. Second operand 11 states. [2020-01-16 18:07:50,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:50,265 INFO L93 Difference]: Finished difference Result 2912 states and 11626 transitions. [2020-01-16 18:07:50,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:50,266 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:50,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:50,273 INFO L225 Difference]: With dead ends: 2912 [2020-01-16 18:07:50,273 INFO L226 Difference]: Without dead ends: 2883 [2020-01-16 18:07:50,273 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 18:07:50,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2883 states. [2020-01-16 18:07:50,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2883 to 1563. [2020-01-16 18:07:50,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 18:07:50,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7030 transitions. [2020-01-16 18:07:50,338 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7030 transitions. Word has length 28 [2020-01-16 18:07:50,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:50,339 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7030 transitions. [2020-01-16 18:07:50,339 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:50,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7030 transitions. [2020-01-16 18:07:50,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:50,341 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:50,341 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 18:07:50,341 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 18:07:50,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:50,341 INFO L82 PathProgramCache]: Analyzing trace with hash -192891122, now seen corresponding path program 367 times [2020-01-16 18:07:50,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:50,341 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810646413] [2020-01-16 18:07:50,341 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:50,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:50,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:07:50,878 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810646413] [2020-01-16 18:07:50,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:50,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:50,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676953410] [2020-01-16 18:07:50,878 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:50,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:50,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:50,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:50,879 INFO L87 Difference]: Start difference. First operand 1563 states and 7030 transitions. Second operand 11 states. [2020-01-16 18:07:51,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:51,059 INFO L93 Difference]: Finished difference Result 2897 states and 11602 transitions. [2020-01-16 18:07:51,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:51,059 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:51,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:51,067 INFO L225 Difference]: With dead ends: 2897 [2020-01-16 18:07:51,067 INFO L226 Difference]: Without dead ends: 2882 [2020-01-16 18:07:51,067 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 18:07:51,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2882 states. [2020-01-16 18:07:51,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2882 to 1572. [2020-01-16 18:07:51,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:07:51,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7054 transitions. [2020-01-16 18:07:51,133 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7054 transitions. Word has length 28 [2020-01-16 18:07:51,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:51,133 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7054 transitions. [2020-01-16 18:07:51,133 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:51,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7054 transitions. [2020-01-16 18:07:51,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:51,136 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:51,136 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 18:07:51,136 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 18:07:51,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:51,136 INFO L82 PathProgramCache]: Analyzing trace with hash 551811376, now seen corresponding path program 368 times [2020-01-16 18:07:51,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:51,136 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764941121] [2020-01-16 18:07:51,136 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:51,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:51,663 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:07:51,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:07:51,669 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764941121] [2020-01-16 18:07:51,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:51,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:51,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115487892] [2020-01-16 18:07:51,670 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:51,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:51,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:51,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:51,670 INFO L87 Difference]: Start difference. First operand 1572 states and 7054 transitions. Second operand 11 states. [2020-01-16 18:07:51,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:51,881 INFO L93 Difference]: Finished difference Result 2898 states and 11599 transitions. [2020-01-16 18:07:51,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:51,881 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:51,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:51,888 INFO L225 Difference]: With dead ends: 2898 [2020-01-16 18:07:51,888 INFO L226 Difference]: Without dead ends: 2877 [2020-01-16 18:07:51,888 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 18:07:51,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2877 states. [2020-01-16 18:07:51,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2877 to 1567. [2020-01-16 18:07:51,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:07:51,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7041 transitions. [2020-01-16 18:07:51,955 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7041 transitions. Word has length 28 [2020-01-16 18:07:51,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:51,955 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7041 transitions. [2020-01-16 18:07:51,955 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:51,955 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7041 transitions. [2020-01-16 18:07:51,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:51,957 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:51,957 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 18:07:51,958 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 18:07:51,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:51,958 INFO L82 PathProgramCache]: Analyzing trace with hash -728120924, now seen corresponding path program 369 times [2020-01-16 18:07:51,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:51,958 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038112195] [2020-01-16 18:07:51,958 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:51,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:52,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:07:52,481 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038112195] [2020-01-16 18:07:52,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:52,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:52,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796637988] [2020-01-16 18:07:52,482 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:52,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:52,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:52,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:52,482 INFO L87 Difference]: Start difference. First operand 1567 states and 7041 transitions. Second operand 11 states. [2020-01-16 18:07:52,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:52,701 INFO L93 Difference]: Finished difference Result 2894 states and 11591 transitions. [2020-01-16 18:07:52,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:52,701 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:52,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:52,708 INFO L225 Difference]: With dead ends: 2894 [2020-01-16 18:07:52,709 INFO L226 Difference]: Without dead ends: 2879 [2020-01-16 18:07:52,709 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:07:52,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2879 states. [2020-01-16 18:07:52,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2879 to 1571. [2020-01-16 18:07:52,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:07:52,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7048 transitions. [2020-01-16 18:07:52,776 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7048 transitions. Word has length 28 [2020-01-16 18:07:52,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:52,776 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7048 transitions. [2020-01-16 18:07:52,776 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:52,776 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7048 transitions. [2020-01-16 18:07:52,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:52,778 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:52,778 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 18:07:52,778 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 18:07:52,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:52,778 INFO L82 PathProgramCache]: Analyzing trace with hash -554873232, now seen corresponding path program 370 times [2020-01-16 18:07:52,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:52,779 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257065487] [2020-01-16 18:07:52,779 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:52,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:53,307 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 18:07:53,308 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257065487] [2020-01-16 18:07:53,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:53,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:53,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385004608] [2020-01-16 18:07:53,308 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:53,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:53,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:53,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:53,309 INFO L87 Difference]: Start difference. First operand 1571 states and 7048 transitions. Second operand 11 states. [2020-01-16 18:07:53,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:53,540 INFO L93 Difference]: Finished difference Result 2893 states and 11585 transitions. [2020-01-16 18:07:53,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:53,540 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:53,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:53,548 INFO L225 Difference]: With dead ends: 2893 [2020-01-16 18:07:53,548 INFO L226 Difference]: Without dead ends: 2875 [2020-01-16 18:07:53,548 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:07:53,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2875 states. [2020-01-16 18:07:53,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2875 to 1567. [2020-01-16 18:07:53,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:07:53,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7037 transitions. [2020-01-16 18:07:53,616 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7037 transitions. Word has length 28 [2020-01-16 18:07:53,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:53,616 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7037 transitions. [2020-01-16 18:07:53,616 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:53,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7037 transitions. [2020-01-16 18:07:53,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:53,619 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:53,619 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 18:07:53,619 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 18:07:53,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:53,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1627522532, now seen corresponding path program 371 times [2020-01-16 18:07:53,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:53,619 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609878460] [2020-01-16 18:07:53,619 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:53,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:54,145 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 18:07:54,145 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609878460] [2020-01-16 18:07:54,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:54,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:54,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158328188] [2020-01-16 18:07:54,145 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:54,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:54,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:54,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:54,146 INFO L87 Difference]: Start difference. First operand 1567 states and 7037 transitions. Second operand 11 states. [2020-01-16 18:07:54,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:54,357 INFO L93 Difference]: Finished difference Result 2896 states and 11591 transitions. [2020-01-16 18:07:54,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:54,358 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:54,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:54,366 INFO L225 Difference]: With dead ends: 2896 [2020-01-16 18:07:54,366 INFO L226 Difference]: Without dead ends: 2880 [2020-01-16 18:07:54,366 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 18:07:54,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2880 states. [2020-01-16 18:07:54,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2880 to 1571. [2020-01-16 18:07:54,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:07:54,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7044 transitions. [2020-01-16 18:07:54,432 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7044 transitions. Word has length 28 [2020-01-16 18:07:54,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:54,432 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7044 transitions. [2020-01-16 18:07:54,432 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:54,433 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7044 transitions. [2020-01-16 18:07:54,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:54,435 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:54,435 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 18:07:54,435 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 18:07:54,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:54,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1056067726, now seen corresponding path program 372 times [2020-01-16 18:07:54,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:54,435 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58226919] [2020-01-16 18:07:54,435 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:54,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:54,957 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 18:07:54,957 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58226919] [2020-01-16 18:07:54,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:54,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:54,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648138834] [2020-01-16 18:07:54,958 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:54,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:54,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:54,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:54,958 INFO L87 Difference]: Start difference. First operand 1571 states and 7044 transitions. Second operand 11 states. [2020-01-16 18:07:55,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:55,148 INFO L93 Difference]: Finished difference Result 2894 states and 11583 transitions. [2020-01-16 18:07:55,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:55,148 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:55,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:55,155 INFO L225 Difference]: With dead ends: 2894 [2020-01-16 18:07:55,156 INFO L226 Difference]: Without dead ends: 2872 [2020-01-16 18:07:55,156 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:07:55,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2872 states. [2020-01-16 18:07:55,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2872 to 1563. [2020-01-16 18:07:55,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 18:07:55,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7026 transitions. [2020-01-16 18:07:55,222 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7026 transitions. Word has length 28 [2020-01-16 18:07:55,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:55,222 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7026 transitions. [2020-01-16 18:07:55,222 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:55,223 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7026 transitions. [2020-01-16 18:07:55,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:55,225 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:55,225 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 18:07:55,225 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 18:07:55,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:55,225 INFO L82 PathProgramCache]: Analyzing trace with hash -171884914, now seen corresponding path program 373 times [2020-01-16 18:07:55,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:55,225 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892036044] [2020-01-16 18:07:55,225 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:55,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:55,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:07:55,741 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892036044] [2020-01-16 18:07:55,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:55,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:55,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878762033] [2020-01-16 18:07:55,742 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:55,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:55,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:55,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:55,742 INFO L87 Difference]: Start difference. First operand 1563 states and 7026 transitions. Second operand 11 states. [2020-01-16 18:07:55,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:55,925 INFO L93 Difference]: Finished difference Result 2901 states and 11606 transitions. [2020-01-16 18:07:55,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:55,925 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:55,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:55,933 INFO L225 Difference]: With dead ends: 2901 [2020-01-16 18:07:55,933 INFO L226 Difference]: Without dead ends: 2886 [2020-01-16 18:07:55,933 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 18:07:55,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2886 states. [2020-01-16 18:07:55,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2886 to 1572. [2020-01-16 18:07:55,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:07:55,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7050 transitions. [2020-01-16 18:07:56,000 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7050 transitions. Word has length 28 [2020-01-16 18:07:56,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:56,000 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7050 transitions. [2020-01-16 18:07:56,000 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:56,000 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7050 transitions. [2020-01-16 18:07:56,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:56,002 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:56,002 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 18:07:56,002 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 18:07:56,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:56,003 INFO L82 PathProgramCache]: Analyzing trace with hash 2062222580, now seen corresponding path program 374 times [2020-01-16 18:07:56,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:56,003 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023243387] [2020-01-16 18:07:56,003 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:56,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:56,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:07:56,508 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023243387] [2020-01-16 18:07:56,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:56,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:56,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959734028] [2020-01-16 18:07:56,509 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:56,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:56,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:56,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:56,509 INFO L87 Difference]: Start difference. First operand 1572 states and 7050 transitions. Second operand 11 states. [2020-01-16 18:07:56,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:56,716 INFO L93 Difference]: Finished difference Result 2904 states and 11607 transitions. [2020-01-16 18:07:56,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:56,717 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:56,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:56,723 INFO L225 Difference]: With dead ends: 2904 [2020-01-16 18:07:56,724 INFO L226 Difference]: Without dead ends: 2881 [2020-01-16 18:07:56,724 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 18:07:56,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2881 states. [2020-01-16 18:07:56,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2881 to 1567. [2020-01-16 18:07:56,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:07:56,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7037 transitions. [2020-01-16 18:07:56,796 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7037 transitions. Word has length 28 [2020-01-16 18:07:56,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:56,796 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7037 transitions. [2020-01-16 18:07:56,796 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:56,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7037 transitions. [2020-01-16 18:07:56,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:56,799 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:56,799 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:07:56,799 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 18:07:56,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:56,799 INFO L82 PathProgramCache]: Analyzing trace with hash 365970664, now seen corresponding path program 375 times [2020-01-16 18:07:56,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:56,800 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293128404] [2020-01-16 18:07:56,800 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:56,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:57,344 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 18:07:57,345 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293128404] [2020-01-16 18:07:57,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:57,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:57,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239236686] [2020-01-16 18:07:57,345 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:57,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:57,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:57,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:57,346 INFO L87 Difference]: Start difference. First operand 1567 states and 7037 transitions. Second operand 11 states. [2020-01-16 18:07:57,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:57,542 INFO L93 Difference]: Finished difference Result 2896 states and 11591 transitions. [2020-01-16 18:07:57,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:57,543 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:57,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:57,550 INFO L225 Difference]: With dead ends: 2896 [2020-01-16 18:07:57,550 INFO L226 Difference]: Without dead ends: 2881 [2020-01-16 18:07:57,550 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 18:07:57,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2881 states. [2020-01-16 18:07:57,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2881 to 1571. [2020-01-16 18:07:57,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:07:57,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7044 transitions. [2020-01-16 18:07:57,617 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7044 transitions. Word has length 28 [2020-01-16 18:07:57,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:57,617 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7044 transitions. [2020-01-16 18:07:57,617 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:57,617 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7044 transitions. [2020-01-16 18:07:57,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:57,620 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:57,620 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 18:07:57,620 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 18:07:57,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:57,620 INFO L82 PathProgramCache]: Analyzing trace with hash 539218356, now seen corresponding path program 376 times [2020-01-16 18:07:57,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:57,621 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940331496] [2020-01-16 18:07:57,621 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:57,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:58,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:07:58,159 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940331496] [2020-01-16 18:07:58,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:58,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:58,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618981095] [2020-01-16 18:07:58,160 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:58,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:58,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:58,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:58,160 INFO L87 Difference]: Start difference. First operand 1571 states and 7044 transitions. Second operand 11 states. [2020-01-16 18:07:58,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:58,354 INFO L93 Difference]: Finished difference Result 2895 states and 11585 transitions. [2020-01-16 18:07:58,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:58,356 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:58,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:58,362 INFO L225 Difference]: With dead ends: 2895 [2020-01-16 18:07:58,362 INFO L226 Difference]: Without dead ends: 2877 [2020-01-16 18:07:58,363 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 18:07:58,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2877 states. [2020-01-16 18:07:58,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2877 to 1567. [2020-01-16 18:07:58,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:07:58,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7033 transitions. [2020-01-16 18:07:58,432 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7033 transitions. Word has length 28 [2020-01-16 18:07:58,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:58,432 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7033 transitions. [2020-01-16 18:07:58,432 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:58,432 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7033 transitions. [2020-01-16 18:07:58,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:58,434 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:58,435 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 18:07:58,435 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 18:07:58,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:58,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1157033560, now seen corresponding path program 377 times [2020-01-16 18:07:58,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:58,435 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951824689] [2020-01-16 18:07:58,435 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:58,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:58,956 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:07:58,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:07:58,962 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951824689] [2020-01-16 18:07:58,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:58,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:58,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203770711] [2020-01-16 18:07:58,963 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:58,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:58,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:58,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:58,964 INFO L87 Difference]: Start difference. First operand 1567 states and 7033 transitions. Second operand 11 states. [2020-01-16 18:07:59,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:07:59,192 INFO L93 Difference]: Finished difference Result 2902 states and 11599 transitions. [2020-01-16 18:07:59,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:07:59,193 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:07:59,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:07:59,200 INFO L225 Difference]: With dead ends: 2902 [2020-01-16 18:07:59,201 INFO L226 Difference]: Without dead ends: 2884 [2020-01-16 18:07:59,201 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:07:59,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2884 states. [2020-01-16 18:07:59,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2884 to 1571. [2020-01-16 18:07:59,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:07:59,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7040 transitions. [2020-01-16 18:07:59,268 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7040 transitions. Word has length 28 [2020-01-16 18:07:59,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:07:59,269 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7040 transitions. [2020-01-16 18:07:59,269 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:07:59,269 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7040 transitions. [2020-01-16 18:07:59,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:07:59,271 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:07:59,271 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 18:07:59,271 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 18:07:59,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:07:59,271 INFO L82 PathProgramCache]: Analyzing trace with hash 1077073934, now seen corresponding path program 378 times [2020-01-16 18:07:59,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:07:59,272 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053898359] [2020-01-16 18:07:59,272 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:07:59,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:07:59,789 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 18:07:59,789 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053898359] [2020-01-16 18:07:59,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:07:59,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:07:59,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120465538] [2020-01-16 18:07:59,789 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:07:59,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:07:59,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:07:59,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:07:59,790 INFO L87 Difference]: Start difference. First operand 1571 states and 7040 transitions. Second operand 11 states. [2020-01-16 18:08:00,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:00,043 INFO L93 Difference]: Finished difference Result 2898 states and 11587 transitions. [2020-01-16 18:08:00,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:00,044 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:00,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:00,051 INFO L225 Difference]: With dead ends: 2898 [2020-01-16 18:08:00,051 INFO L226 Difference]: Without dead ends: 2876 [2020-01-16 18:08:00,052 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 18:08:00,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2876 states. [2020-01-16 18:08:00,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2876 to 1563. [2020-01-16 18:08:00,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 18:08:00,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7022 transitions. [2020-01-16 18:08:00,120 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7022 transitions. Word has length 28 [2020-01-16 18:08:00,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:00,120 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7022 transitions. [2020-01-16 18:08:00,120 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:00,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7022 transitions. [2020-01-16 18:08:00,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:00,123 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:00,123 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 18:08:00,123 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 18:08:00,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:00,123 INFO L82 PathProgramCache]: Analyzing trace with hash 583320688, now seen corresponding path program 379 times [2020-01-16 18:08:00,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:00,123 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863600098] [2020-01-16 18:08:00,123 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:00,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:00,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:08:00,639 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863600098] [2020-01-16 18:08:00,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:00,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:00,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775097035] [2020-01-16 18:08:00,639 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:00,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:00,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:00,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:00,640 INFO L87 Difference]: Start difference. First operand 1563 states and 7022 transitions. Second operand 11 states. [2020-01-16 18:08:00,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:00,907 INFO L93 Difference]: Finished difference Result 2906 states and 11614 transitions. [2020-01-16 18:08:00,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:00,908 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:00,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:00,915 INFO L225 Difference]: With dead ends: 2906 [2020-01-16 18:08:00,915 INFO L226 Difference]: Without dead ends: 2890 [2020-01-16 18:08:00,915 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:08:00,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2890 states. [2020-01-16 18:08:00,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2890 to 1573. [2020-01-16 18:08:00,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:08:00,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7048 transitions. [2020-01-16 18:08:00,983 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7048 transitions. Word has length 28 [2020-01-16 18:08:00,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:00,983 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7048 transitions. [2020-01-16 18:08:00,983 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:00,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7048 transitions. [2020-01-16 18:08:00,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:00,985 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:00,985 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:08:00,985 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 18:08:00,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:00,986 INFO L82 PathProgramCache]: Analyzing trace with hash 2072725684, now seen corresponding path program 380 times [2020-01-16 18:08:00,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:00,986 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532087630] [2020-01-16 18:08:00,986 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:00,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:01,499 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 18:08:01,500 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532087630] [2020-01-16 18:08:01,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:01,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:01,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772390815] [2020-01-16 18:08:01,500 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:01,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:01,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:01,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:01,501 INFO L87 Difference]: Start difference. First operand 1573 states and 7048 transitions. Second operand 11 states. [2020-01-16 18:08:01,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:01,768 INFO L93 Difference]: Finished difference Result 2908 states and 11612 transitions. [2020-01-16 18:08:01,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:01,769 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:01,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:01,776 INFO L225 Difference]: With dead ends: 2908 [2020-01-16 18:08:01,776 INFO L226 Difference]: Without dead ends: 2884 [2020-01-16 18:08:01,776 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 18:08:01,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2884 states. [2020-01-16 18:08:01,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2884 to 1567. [2020-01-16 18:08:01,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:08:01,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7033 transitions. [2020-01-16 18:08:01,842 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7033 transitions. Word has length 28 [2020-01-16 18:08:01,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:01,842 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7033 transitions. [2020-01-16 18:08:01,842 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:01,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7033 transitions. [2020-01-16 18:08:01,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:01,845 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:01,845 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 18:08:01,845 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 18:08:01,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:01,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1121176266, now seen corresponding path program 381 times [2020-01-16 18:08:01,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:01,845 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604486716] [2020-01-16 18:08:01,845 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:01,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:02,370 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 18:08:02,370 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604486716] [2020-01-16 18:08:02,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:02,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:02,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557564357] [2020-01-16 18:08:02,371 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:02,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:02,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:02,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:02,371 INFO L87 Difference]: Start difference. First operand 1567 states and 7033 transitions. Second operand 11 states. [2020-01-16 18:08:02,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:02,567 INFO L93 Difference]: Finished difference Result 2900 states and 11596 transitions. [2020-01-16 18:08:02,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:02,567 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:02,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:02,575 INFO L225 Difference]: With dead ends: 2900 [2020-01-16 18:08:02,575 INFO L226 Difference]: Without dead ends: 2884 [2020-01-16 18:08:02,575 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 18:08:02,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2884 states. [2020-01-16 18:08:02,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2884 to 1571. [2020-01-16 18:08:02,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:08:02,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7040 transitions. [2020-01-16 18:08:02,641 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7040 transitions. Word has length 28 [2020-01-16 18:08:02,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:02,641 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7040 transitions. [2020-01-16 18:08:02,641 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:02,641 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7040 transitions. [2020-01-16 18:08:02,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:02,643 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:02,644 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:08:02,644 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 18:08:02,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:02,644 INFO L82 PathProgramCache]: Analyzing trace with hash 549721460, now seen corresponding path program 382 times [2020-01-16 18:08:02,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:02,644 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505031790] [2020-01-16 18:08:02,644 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:02,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:03,150 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:08:03,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:08:03,158 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505031790] [2020-01-16 18:08:03,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:03,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:03,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438017197] [2020-01-16 18:08:03,158 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:03,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:03,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:03,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:03,158 INFO L87 Difference]: Start difference. First operand 1571 states and 7040 transitions. Second operand 11 states. [2020-01-16 18:08:03,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:03,424 INFO L93 Difference]: Finished difference Result 2898 states and 11588 transitions. [2020-01-16 18:08:03,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:03,425 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:03,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:03,432 INFO L225 Difference]: With dead ends: 2898 [2020-01-16 18:08:03,432 INFO L226 Difference]: Without dead ends: 2880 [2020-01-16 18:08:03,432 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:08:03,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2880 states. [2020-01-16 18:08:03,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2880 to 1567. [2020-01-16 18:08:03,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:08:03,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7029 transitions. [2020-01-16 18:08:03,498 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7029 transitions. Word has length 28 [2020-01-16 18:08:03,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:03,498 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7029 transitions. [2020-01-16 18:08:03,498 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:03,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7029 transitions. [2020-01-16 18:08:03,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:03,501 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:03,501 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:08:03,501 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 18:08:03,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:03,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1537495882, now seen corresponding path program 383 times [2020-01-16 18:08:03,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:03,501 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876717448] [2020-01-16 18:08:03,501 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:03,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:04,022 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:08:04,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:08:04,029 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876717448] [2020-01-16 18:08:04,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:04,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:04,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992846447] [2020-01-16 18:08:04,029 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:04,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:04,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:04,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:04,029 INFO L87 Difference]: Start difference. First operand 1567 states and 7029 transitions. Second operand 11 states. [2020-01-16 18:08:04,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:04,301 INFO L93 Difference]: Finished difference Result 2904 states and 11600 transitions. [2020-01-16 18:08:04,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:04,302 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:04,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:04,309 INFO L225 Difference]: With dead ends: 2904 [2020-01-16 18:08:04,309 INFO L226 Difference]: Without dead ends: 2886 [2020-01-16 18:08:04,310 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 18:08:04,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2886 states. [2020-01-16 18:08:04,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2886 to 1571. [2020-01-16 18:08:04,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:08:04,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7036 transitions. [2020-01-16 18:08:04,376 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7036 transitions. Word has length 28 [2020-01-16 18:08:04,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:04,376 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7036 transitions. [2020-01-16 18:08:04,376 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:04,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7036 transitions. [2020-01-16 18:08:04,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:04,378 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:04,378 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 18:08:04,378 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 18:08:04,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:04,379 INFO L82 PathProgramCache]: Analyzing trace with hash -523363920, now seen corresponding path program 384 times [2020-01-16 18:08:04,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:04,379 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653818495] [2020-01-16 18:08:04,379 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:04,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:04,905 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 18:08:04,905 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653818495] [2020-01-16 18:08:04,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:04,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:04,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416270822] [2020-01-16 18:08:04,906 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:04,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:04,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:04,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:04,906 INFO L87 Difference]: Start difference. First operand 1571 states and 7036 transitions. Second operand 11 states. [2020-01-16 18:08:05,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:05,123 INFO L93 Difference]: Finished difference Result 2900 states and 11588 transitions. [2020-01-16 18:08:05,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:05,123 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:05,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:05,131 INFO L225 Difference]: With dead ends: 2900 [2020-01-16 18:08:05,131 INFO L226 Difference]: Without dead ends: 2874 [2020-01-16 18:08:05,131 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:08:05,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2874 states. [2020-01-16 18:08:05,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2874 to 1559. [2020-01-16 18:08:05,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1559 states. [2020-01-16 18:08:05,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 7011 transitions. [2020-01-16 18:08:05,197 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 7011 transitions. Word has length 28 [2020-01-16 18:08:05,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:05,197 INFO L478 AbstractCegarLoop]: Abstraction has 1559 states and 7011 transitions. [2020-01-16 18:08:05,198 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:05,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 7011 transitions. [2020-01-16 18:08:05,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:05,200 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:05,200 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:08:05,200 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 18:08:05,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:05,200 INFO L82 PathProgramCache]: Analyzing trace with hash -129443996, now seen corresponding path program 385 times [2020-01-16 18:08:05,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:05,200 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676438330] [2020-01-16 18:08:05,200 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:05,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:05,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:08:05,717 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676438330] [2020-01-16 18:08:05,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:05,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:05,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990807181] [2020-01-16 18:08:05,717 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:05,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:05,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:05,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:05,718 INFO L87 Difference]: Start difference. First operand 1559 states and 7011 transitions. Second operand 11 states. [2020-01-16 18:08:05,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:05,935 INFO L93 Difference]: Finished difference Result 2919 states and 11668 transitions. [2020-01-16 18:08:05,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:05,936 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:05,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:05,943 INFO L225 Difference]: With dead ends: 2919 [2020-01-16 18:08:05,943 INFO L226 Difference]: Without dead ends: 2904 [2020-01-16 18:08:05,943 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:08:05,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2904 states. [2020-01-16 18:08:06,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2904 to 1574. [2020-01-16 18:08:06,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:08:06,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7063 transitions. [2020-01-16 18:08:06,010 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7063 transitions. Word has length 28 [2020-01-16 18:08:06,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:06,011 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7063 transitions. [2020-01-16 18:08:06,011 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:06,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7063 transitions. [2020-01-16 18:08:06,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:06,013 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:06,013 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 18:08:06,013 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 18:08:06,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:06,013 INFO L82 PathProgramCache]: Analyzing trace with hash 615258502, now seen corresponding path program 386 times [2020-01-16 18:08:06,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:06,013 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328536899] [2020-01-16 18:08:06,014 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:06,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:06,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:08:06,535 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328536899] [2020-01-16 18:08:06,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:06,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:06,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655373195] [2020-01-16 18:08:06,536 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:06,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:06,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:06,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:06,536 INFO L87 Difference]: Start difference. First operand 1574 states and 7063 transitions. Second operand 11 states. [2020-01-16 18:08:06,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:06,751 INFO L93 Difference]: Finished difference Result 2920 states and 11665 transitions. [2020-01-16 18:08:06,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:06,752 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:06,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:06,759 INFO L225 Difference]: With dead ends: 2920 [2020-01-16 18:08:06,760 INFO L226 Difference]: Without dead ends: 2899 [2020-01-16 18:08:06,760 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 18:08:06,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-01-16 18:08:06,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1569. [2020-01-16 18:08:06,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:08:06,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7049 transitions. [2020-01-16 18:08:06,825 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7049 transitions. Word has length 28 [2020-01-16 18:08:06,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:06,826 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7049 transitions. [2020-01-16 18:08:06,826 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:06,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7049 transitions. [2020-01-16 18:08:06,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:06,828 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:06,828 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:08:06,828 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 18:08:06,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:06,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1202529376, now seen corresponding path program 387 times [2020-01-16 18:08:06,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:06,829 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890307153] [2020-01-16 18:08:06,829 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:06,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:07,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:08:07,346 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890307153] [2020-01-16 18:08:07,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:07,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:07,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477308618] [2020-01-16 18:08:07,346 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:07,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:07,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:07,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:07,347 INFO L87 Difference]: Start difference. First operand 1569 states and 7049 transitions. Second operand 11 states. [2020-01-16 18:08:07,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:07,604 INFO L93 Difference]: Finished difference Result 2921 states and 11667 transitions. [2020-01-16 18:08:07,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:07,605 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:07,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:07,612 INFO L225 Difference]: With dead ends: 2921 [2020-01-16 18:08:07,612 INFO L226 Difference]: Without dead ends: 2906 [2020-01-16 18:08:07,612 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:08:07,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2906 states. [2020-01-16 18:08:07,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2906 to 1574. [2020-01-16 18:08:07,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:08:07,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7058 transitions. [2020-01-16 18:08:07,679 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7058 transitions. Word has length 28 [2020-01-16 18:08:07,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:07,680 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7058 transitions. [2020-01-16 18:08:07,680 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:07,680 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7058 transitions. [2020-01-16 18:08:07,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:07,682 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:07,682 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:08:07,682 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 18:08:07,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:07,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1031578118, now seen corresponding path program 388 times [2020-01-16 18:08:07,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:07,683 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017071751] [2020-01-16 18:08:07,683 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:07,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:08,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:08:08,208 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017071751] [2020-01-16 18:08:08,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:08,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:08,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401213197] [2020-01-16 18:08:08,208 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:08,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:08,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:08,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:08,208 INFO L87 Difference]: Start difference. First operand 1574 states and 7058 transitions. Second operand 11 states. [2020-01-16 18:08:08,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:08,477 INFO L93 Difference]: Finished difference Result 2924 states and 11668 transitions. [2020-01-16 18:08:08,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:08,478 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:08,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:08,485 INFO L225 Difference]: With dead ends: 2924 [2020-01-16 18:08:08,485 INFO L226 Difference]: Without dead ends: 2901 [2020-01-16 18:08:08,486 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:08:08,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2901 states. [2020-01-16 18:08:08,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2901 to 1569. [2020-01-16 18:08:08,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:08:08,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7044 transitions. [2020-01-16 18:08:08,552 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7044 transitions. Word has length 28 [2020-01-16 18:08:08,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:08,552 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7044 transitions. [2020-01-16 18:08:08,552 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:08,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7044 transitions. [2020-01-16 18:08:08,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:08,554 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:08,555 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:08:08,555 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 18:08:08,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:08,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1153114080, now seen corresponding path program 389 times [2020-01-16 18:08:08,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:08,555 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338116299] [2020-01-16 18:08:08,555 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:08,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:09,093 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 18:08:09,094 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338116299] [2020-01-16 18:08:09,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:09,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:09,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206756845] [2020-01-16 18:08:09,094 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:09,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:09,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:09,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:09,095 INFO L87 Difference]: Start difference. First operand 1569 states and 7044 transitions. Second operand 11 states. [2020-01-16 18:08:09,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:09,275 INFO L93 Difference]: Finished difference Result 2924 states and 11669 transitions. [2020-01-16 18:08:09,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:09,275 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:09,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:09,282 INFO L225 Difference]: With dead ends: 2924 [2020-01-16 18:08:09,282 INFO L226 Difference]: Without dead ends: 2908 [2020-01-16 18:08:09,282 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 18:08:09,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2020-01-16 18:08:09,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 1575. [2020-01-16 18:08:09,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:08:09,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7055 transitions. [2020-01-16 18:08:09,348 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7055 transitions. Word has length 28 [2020-01-16 18:08:09,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:09,348 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7055 transitions. [2020-01-16 18:08:09,349 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:09,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7055 transitions. [2020-01-16 18:08:09,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:09,351 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:09,351 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 18:08:09,351 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 18:08:09,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:09,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1652448220, now seen corresponding path program 390 times [2020-01-16 18:08:09,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:09,351 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487261565] [2020-01-16 18:08:09,352 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:09,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:09,875 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 18:08:09,876 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487261565] [2020-01-16 18:08:09,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:09,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:09,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232293944] [2020-01-16 18:08:09,876 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:09,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:09,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:09,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:09,877 INFO L87 Difference]: Start difference. First operand 1575 states and 7055 transitions. Second operand 11 states. [2020-01-16 18:08:10,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:10,053 INFO L93 Difference]: Finished difference Result 2926 states and 11667 transitions. [2020-01-16 18:08:10,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:10,054 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:10,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:10,061 INFO L225 Difference]: With dead ends: 2926 [2020-01-16 18:08:10,061 INFO L226 Difference]: Without dead ends: 2897 [2020-01-16 18:08:10,062 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 18:08:10,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2897 states. [2020-01-16 18:08:10,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2897 to 1564. [2020-01-16 18:08:10,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1564 states. [2020-01-16 18:08:10,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 7030 transitions. [2020-01-16 18:08:10,128 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 7030 transitions. Word has length 28 [2020-01-16 18:08:10,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:10,128 INFO L478 AbstractCegarLoop]: Abstraction has 1564 states and 7030 transitions. [2020-01-16 18:08:10,128 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:10,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 7030 transitions. [2020-01-16 18:08:10,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:10,130 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:10,130 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 18:08:10,130 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 18:08:10,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:10,130 INFO L82 PathProgramCache]: Analyzing trace with hash 458301326, now seen corresponding path program 391 times [2020-01-16 18:08:10,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:10,131 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3050442] [2020-01-16 18:08:10,131 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:10,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:10,683 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 31 [2020-01-16 18:08:10,689 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 18:08:10,689 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3050442] [2020-01-16 18:08:10,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:10,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:10,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598238493] [2020-01-16 18:08:10,690 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:10,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:10,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:10,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:10,690 INFO L87 Difference]: Start difference. First operand 1564 states and 7030 transitions. Second operand 11 states. [2020-01-16 18:08:10,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:10,868 INFO L93 Difference]: Finished difference Result 2918 states and 11661 transitions. [2020-01-16 18:08:10,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:10,869 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:10,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:10,876 INFO L225 Difference]: With dead ends: 2918 [2020-01-16 18:08:10,876 INFO L226 Difference]: Without dead ends: 2903 [2020-01-16 18:08:10,876 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 18:08:10,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2903 states. [2020-01-16 18:08:10,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2903 to 1574. [2020-01-16 18:08:10,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:08:10,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7058 transitions. [2020-01-16 18:08:10,943 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7058 transitions. Word has length 28 [2020-01-16 18:08:10,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:10,943 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7058 transitions. [2020-01-16 18:08:10,943 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:10,943 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7058 transitions. [2020-01-16 18:08:10,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:10,946 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:10,947 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 18:08:10,947 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 18:08:10,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:10,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1203003824, now seen corresponding path program 392 times [2020-01-16 18:08:10,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:10,947 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113292843] [2020-01-16 18:08:10,947 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:10,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:11,477 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 18:08:11,477 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113292843] [2020-01-16 18:08:11,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:11,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:11,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959682865] [2020-01-16 18:08:11,478 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:11,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:11,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:11,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:11,478 INFO L87 Difference]: Start difference. First operand 1574 states and 7058 transitions. Second operand 11 states. [2020-01-16 18:08:11,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:11,650 INFO L93 Difference]: Finished difference Result 2919 states and 11658 transitions. [2020-01-16 18:08:11,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:11,651 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:11,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:11,658 INFO L225 Difference]: With dead ends: 2919 [2020-01-16 18:08:11,659 INFO L226 Difference]: Without dead ends: 2898 [2020-01-16 18:08:11,659 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:08:11,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2898 states. [2020-01-16 18:08:11,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2898 to 1569. [2020-01-16 18:08:11,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:08:11,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7044 transitions. [2020-01-16 18:08:11,725 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7044 transitions. Word has length 28 [2020-01-16 18:08:11,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:11,726 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7044 transitions. [2020-01-16 18:08:11,726 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:11,726 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7044 transitions. [2020-01-16 18:08:11,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:11,728 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:11,728 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:08:11,728 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 18:08:11,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:11,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1150013856, now seen corresponding path program 393 times [2020-01-16 18:08:11,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:11,729 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299052992] [2020-01-16 18:08:11,729 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:11,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:12,267 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 18:08:12,268 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299052992] [2020-01-16 18:08:12,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:12,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:12,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152761889] [2020-01-16 18:08:12,268 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:12,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:12,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:12,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:12,269 INFO L87 Difference]: Start difference. First operand 1569 states and 7044 transitions. Second operand 11 states. [2020-01-16 18:08:12,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:12,444 INFO L93 Difference]: Finished difference Result 2919 states and 11658 transitions. [2020-01-16 18:08:12,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:12,444 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:12,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:12,451 INFO L225 Difference]: With dead ends: 2919 [2020-01-16 18:08:12,451 INFO L226 Difference]: Without dead ends: 2904 [2020-01-16 18:08:12,451 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:08:12,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2904 states. [2020-01-16 18:08:12,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2904 to 1574. [2020-01-16 18:08:12,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:08:12,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7053 transitions. [2020-01-16 18:08:12,517 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7053 transitions. Word has length 28 [2020-01-16 18:08:12,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:12,518 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7053 transitions. [2020-01-16 18:08:12,518 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:12,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7053 transitions. [2020-01-16 18:08:12,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:12,520 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:12,520 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:08:12,520 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 18:08:12,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:12,520 INFO L82 PathProgramCache]: Analyzing trace with hash 512638832, now seen corresponding path program 394 times [2020-01-16 18:08:12,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:12,521 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506437693] [2020-01-16 18:08:12,521 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:12,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:13,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:08:13,055 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506437693] [2020-01-16 18:08:13,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:13,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:13,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547183757] [2020-01-16 18:08:13,055 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:13,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:13,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:13,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:13,056 INFO L87 Difference]: Start difference. First operand 1574 states and 7053 transitions. Second operand 11 states. [2020-01-16 18:08:13,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:13,244 INFO L93 Difference]: Finished difference Result 2921 states and 11657 transitions. [2020-01-16 18:08:13,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:13,244 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:13,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:13,252 INFO L225 Difference]: With dead ends: 2921 [2020-01-16 18:08:13,252 INFO L226 Difference]: Without dead ends: 2899 [2020-01-16 18:08:13,252 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 18:08:13,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-01-16 18:08:13,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1569. [2020-01-16 18:08:13,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:08:13,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7039 transitions. [2020-01-16 18:08:13,318 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7039 transitions. Word has length 28 [2020-01-16 18:08:13,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:13,318 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7039 transitions. [2020-01-16 18:08:13,318 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:13,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7039 transitions. [2020-01-16 18:08:13,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:13,320 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:13,320 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:08:13,321 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 18:08:13,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:13,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1205629600, now seen corresponding path program 395 times [2020-01-16 18:08:13,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:13,321 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712606224] [2020-01-16 18:08:13,321 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:13,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:13,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:08:13,841 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712606224] [2020-01-16 18:08:13,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:13,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:13,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73716666] [2020-01-16 18:08:13,842 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:13,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:13,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:13,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:13,842 INFO L87 Difference]: Start difference. First operand 1569 states and 7039 transitions. Second operand 11 states. [2020-01-16 18:08:14,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:14,011 INFO L93 Difference]: Finished difference Result 2922 states and 11660 transitions. [2020-01-16 18:08:14,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:14,012 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:14,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:14,019 INFO L225 Difference]: With dead ends: 2922 [2020-01-16 18:08:14,019 INFO L226 Difference]: Without dead ends: 2906 [2020-01-16 18:08:14,019 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:08:14,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2906 states. [2020-01-16 18:08:14,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2906 to 1575. [2020-01-16 18:08:14,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:08:14,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7050 transitions. [2020-01-16 18:08:14,088 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7050 transitions. Word has length 28 [2020-01-16 18:08:14,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:14,088 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7050 transitions. [2020-01-16 18:08:14,088 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:14,088 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7050 transitions. [2020-01-16 18:08:14,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:14,090 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:14,090 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 18:08:14,090 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 18:08:14,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:14,090 INFO L82 PathProgramCache]: Analyzing trace with hash 2123579790, now seen corresponding path program 396 times [2020-01-16 18:08:14,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:14,091 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522329027] [2020-01-16 18:08:14,091 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:14,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:14,622 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 32 [2020-01-16 18:08:14,628 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 18:08:14,629 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522329027] [2020-01-16 18:08:14,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:14,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:14,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465704090] [2020-01-16 18:08:14,629 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:14,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:14,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:14,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:14,629 INFO L87 Difference]: Start difference. First operand 1575 states and 7050 transitions. Second operand 11 states. [2020-01-16 18:08:14,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:14,829 INFO L93 Difference]: Finished difference Result 2923 states and 11656 transitions. [2020-01-16 18:08:14,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:14,830 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:14,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:14,837 INFO L225 Difference]: With dead ends: 2923 [2020-01-16 18:08:14,837 INFO L226 Difference]: Without dead ends: 2895 [2020-01-16 18:08:14,837 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 18:08:14,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2895 states. [2020-01-16 18:08:14,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2895 to 1564. [2020-01-16 18:08:14,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1564 states. [2020-01-16 18:08:14,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 7025 transitions. [2020-01-16 18:08:14,905 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 7025 transitions. Word has length 28 [2020-01-16 18:08:14,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:14,905 INFO L478 AbstractCegarLoop]: Abstraction has 1564 states and 7025 transitions. [2020-01-16 18:08:14,905 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:14,905 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 7025 transitions. [2020-01-16 18:08:14,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:14,907 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:14,908 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:08:14,908 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 18:08:14,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:14,908 INFO L82 PathProgramCache]: Analyzing trace with hash 479307534, now seen corresponding path program 397 times [2020-01-16 18:08:14,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:14,908 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2200227] [2020-01-16 18:08:14,908 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:14,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:15,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:08:15,434 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2200227] [2020-01-16 18:08:15,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:15,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:15,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706428113] [2020-01-16 18:08:15,434 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:15,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:15,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:15,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:15,434 INFO L87 Difference]: Start difference. First operand 1564 states and 7025 transitions. Second operand 11 states. [2020-01-16 18:08:15,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:15,625 INFO L93 Difference]: Finished difference Result 2923 states and 11667 transitions. [2020-01-16 18:08:15,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:15,626 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:15,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:15,633 INFO L225 Difference]: With dead ends: 2923 [2020-01-16 18:08:15,633 INFO L226 Difference]: Without dead ends: 2908 [2020-01-16 18:08:15,633 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 18:08:15,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2020-01-16 18:08:15,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 1574. [2020-01-16 18:08:15,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:08:15,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7053 transitions. [2020-01-16 18:08:15,702 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7053 transitions. Word has length 28 [2020-01-16 18:08:15,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:15,703 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7053 transitions. [2020-01-16 18:08:15,703 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:15,703 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7053 transitions. [2020-01-16 18:08:15,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:15,705 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:15,705 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 18:08:15,705 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 18:08:15,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:15,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1581552268, now seen corresponding path program 398 times [2020-01-16 18:08:15,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:15,706 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474650772] [2020-01-16 18:08:15,706 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:15,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:16,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:08:16,228 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474650772] [2020-01-16 18:08:16,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:16,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:16,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447398810] [2020-01-16 18:08:16,229 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:16,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:16,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:16,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:16,229 INFO L87 Difference]: Start difference. First operand 1574 states and 7053 transitions. Second operand 11 states. [2020-01-16 18:08:16,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:16,416 INFO L93 Difference]: Finished difference Result 2926 states and 11668 transitions. [2020-01-16 18:08:16,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:16,417 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:16,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:16,425 INFO L225 Difference]: With dead ends: 2926 [2020-01-16 18:08:16,425 INFO L226 Difference]: Without dead ends: 2903 [2020-01-16 18:08:16,425 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:08:16,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2903 states. [2020-01-16 18:08:16,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2903 to 1569. [2020-01-16 18:08:16,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:08:16,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7039 transitions. [2020-01-16 18:08:16,491 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7039 transitions. Word has length 28 [2020-01-16 18:08:16,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:16,491 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7039 transitions. [2020-01-16 18:08:16,491 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:16,491 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7039 transitions. [2020-01-16 18:08:16,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:16,493 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:16,494 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:08:16,494 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 18:08:16,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:16,494 INFO L82 PathProgramCache]: Analyzing trace with hash -55922268, now seen corresponding path program 399 times [2020-01-16 18:08:16,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:16,494 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856055251] [2020-01-16 18:08:16,494 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:16,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:17,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:08:17,015 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856055251] [2020-01-16 18:08:17,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:17,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:17,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401670574] [2020-01-16 18:08:17,015 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:17,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:17,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:17,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:17,016 INFO L87 Difference]: Start difference. First operand 1569 states and 7039 transitions. Second operand 11 states. [2020-01-16 18:08:17,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:17,203 INFO L93 Difference]: Finished difference Result 2922 states and 11660 transitions. [2020-01-16 18:08:17,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:17,203 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:17,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:17,211 INFO L225 Difference]: With dead ends: 2922 [2020-01-16 18:08:17,211 INFO L226 Difference]: Without dead ends: 2907 [2020-01-16 18:08:17,212 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 18:08:17,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2907 states. [2020-01-16 18:08:17,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2907 to 1574. [2020-01-16 18:08:17,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:08:17,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7048 transitions. [2020-01-16 18:08:17,282 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7048 transitions. Word has length 28 [2020-01-16 18:08:17,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:17,282 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7048 transitions. [2020-01-16 18:08:17,282 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:17,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7048 transitions. [2020-01-16 18:08:17,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:17,284 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:17,284 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 18:08:17,285 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 18:08:17,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:17,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1606730420, now seen corresponding path program 400 times [2020-01-16 18:08:17,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:17,285 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454930605] [2020-01-16 18:08:17,285 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:17,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:17,800 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 18:08:17,800 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454930605] [2020-01-16 18:08:17,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:17,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:17,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543880328] [2020-01-16 18:08:17,800 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:17,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:17,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:17,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:17,801 INFO L87 Difference]: Start difference. First operand 1574 states and 7048 transitions. Second operand 11 states. [2020-01-16 18:08:17,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:17,986 INFO L93 Difference]: Finished difference Result 2924 states and 11659 transitions. [2020-01-16 18:08:17,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:17,986 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:17,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:17,994 INFO L225 Difference]: With dead ends: 2924 [2020-01-16 18:08:17,994 INFO L226 Difference]: Without dead ends: 2902 [2020-01-16 18:08:17,994 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:08:18,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2902 states. [2020-01-16 18:08:18,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2902 to 1569. [2020-01-16 18:08:18,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:08:18,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7034 transitions. [2020-01-16 18:08:18,063 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7034 transitions. Word has length 28 [2020-01-16 18:08:18,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:18,063 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7034 transitions. [2020-01-16 18:08:18,063 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:18,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7034 transitions. [2020-01-16 18:08:18,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:18,065 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:18,066 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 18:08:18,066 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 18:08:18,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:18,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1578926492, now seen corresponding path program 401 times [2020-01-16 18:08:18,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:18,066 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258912014] [2020-01-16 18:08:18,066 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:18,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:18,586 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 18:08:18,586 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258912014] [2020-01-16 18:08:18,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:18,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:18,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956551848] [2020-01-16 18:08:18,587 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:18,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:18,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:18,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:18,587 INFO L87 Difference]: Start difference. First operand 1569 states and 7034 transitions. Second operand 11 states. [2020-01-16 18:08:18,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:18,799 INFO L93 Difference]: Finished difference Result 2930 states and 11673 transitions. [2020-01-16 18:08:18,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:18,799 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:18,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:18,807 INFO L225 Difference]: With dead ends: 2930 [2020-01-16 18:08:18,807 INFO L226 Difference]: Without dead ends: 2912 [2020-01-16 18:08:18,807 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 18:08:18,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2912 states. [2020-01-16 18:08:18,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2912 to 1576. [2020-01-16 18:08:18,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:08:18,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7047 transitions. [2020-01-16 18:08:18,873 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7047 transitions. Word has length 28 [2020-01-16 18:08:18,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:18,874 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7047 transitions. [2020-01-16 18:08:18,874 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:18,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7047 transitions. [2020-01-16 18:08:18,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:18,876 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:18,876 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 18:08:18,876 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 18:08:18,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:18,876 INFO L82 PathProgramCache]: Analyzing trace with hash 2144585998, now seen corresponding path program 402 times [2020-01-16 18:08:18,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:18,877 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116855564] [2020-01-16 18:08:18,877 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:18,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:19,402 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 18:08:19,402 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116855564] [2020-01-16 18:08:19,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:19,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:19,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433233465] [2020-01-16 18:08:19,403 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:19,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:19,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:19,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:19,403 INFO L87 Difference]: Start difference. First operand 1576 states and 7047 transitions. Second operand 11 states. [2020-01-16 18:08:19,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:19,584 INFO L93 Difference]: Finished difference Result 2929 states and 11664 transitions. [2020-01-16 18:08:19,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:19,585 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:19,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:19,591 INFO L225 Difference]: With dead ends: 2929 [2020-01-16 18:08:19,591 INFO L226 Difference]: Without dead ends: 2900 [2020-01-16 18:08:19,592 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 18:08:19,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2900 states. [2020-01-16 18:08:19,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2900 to 1564. [2020-01-16 18:08:19,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1564 states. [2020-01-16 18:08:19,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 7020 transitions. [2020-01-16 18:08:19,659 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 7020 transitions. Word has length 28 [2020-01-16 18:08:19,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:19,660 INFO L478 AbstractCegarLoop]: Abstraction has 1564 states and 7020 transitions. [2020-01-16 18:08:19,660 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:19,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 7020 transitions. [2020-01-16 18:08:19,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:19,662 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:19,662 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:08:19,662 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 18:08:19,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:19,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1234513136, now seen corresponding path program 403 times [2020-01-16 18:08:19,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:19,663 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986894945] [2020-01-16 18:08:19,663 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:19,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:20,192 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:08:20,199 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 18:08:20,199 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986894945] [2020-01-16 18:08:20,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:20,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:20,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178060507] [2020-01-16 18:08:20,199 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:20,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:20,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:20,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:20,200 INFO L87 Difference]: Start difference. First operand 1564 states and 7020 transitions. Second operand 11 states. [2020-01-16 18:08:20,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:20,388 INFO L93 Difference]: Finished difference Result 2930 states and 11681 transitions. [2020-01-16 18:08:20,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:20,389 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:20,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:20,396 INFO L225 Difference]: With dead ends: 2930 [2020-01-16 18:08:20,396 INFO L226 Difference]: Without dead ends: 2914 [2020-01-16 18:08:20,397 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 18:08:20,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2914 states. [2020-01-16 18:08:20,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2914 to 1576. [2020-01-16 18:08:20,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:08:20,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7054 transitions. [2020-01-16 18:08:20,463 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7054 transitions. Word has length 28 [2020-01-16 18:08:20,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:20,463 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7054 transitions. [2020-01-16 18:08:20,463 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:20,463 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7054 transitions. [2020-01-16 18:08:20,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:20,465 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:20,466 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 18:08:20,466 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 18:08:20,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:20,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1571049164, now seen corresponding path program 404 times [2020-01-16 18:08:20,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:20,466 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40761415] [2020-01-16 18:08:20,466 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:20,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:20,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:08:20,994 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40761415] [2020-01-16 18:08:20,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:20,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:20,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792269272] [2020-01-16 18:08:20,994 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:20,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:20,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:20,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:20,995 INFO L87 Difference]: Start difference. First operand 1576 states and 7054 transitions. Second operand 11 states. [2020-01-16 18:08:21,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:21,186 INFO L93 Difference]: Finished difference Result 2932 states and 11679 transitions. [2020-01-16 18:08:21,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:21,187 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:21,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:21,194 INFO L225 Difference]: With dead ends: 2932 [2020-01-16 18:08:21,195 INFO L226 Difference]: Without dead ends: 2908 [2020-01-16 18:08:21,195 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:08:21,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2020-01-16 18:08:21,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 1570. [2020-01-16 18:08:21,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:08:21,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7037 transitions. [2020-01-16 18:08:21,263 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7037 transitions. Word has length 28 [2020-01-16 18:08:21,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:21,263 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7037 transitions. [2020-01-16 18:08:21,263 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:21,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7037 transitions. [2020-01-16 18:08:21,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:21,265 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:21,266 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:08:21,266 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 18:08:21,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:21,266 INFO L82 PathProgramCache]: Analyzing trace with hash 699283334, now seen corresponding path program 405 times [2020-01-16 18:08:21,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:21,266 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152941193] [2020-01-16 18:08:21,266 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:21,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:21,796 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 18:08:21,797 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152941193] [2020-01-16 18:08:21,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:21,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:21,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768995338] [2020-01-16 18:08:21,797 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:21,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:21,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:21,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:21,798 INFO L87 Difference]: Start difference. First operand 1570 states and 7037 transitions. Second operand 11 states. [2020-01-16 18:08:21,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:21,973 INFO L93 Difference]: Finished difference Result 2929 states and 11673 transitions. [2020-01-16 18:08:21,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:21,973 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:21,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:22,000 INFO L225 Difference]: With dead ends: 2929 [2020-01-16 18:08:22,001 INFO L226 Difference]: Without dead ends: 2913 [2020-01-16 18:08:22,001 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 18:08:22,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2913 states. [2020-01-16 18:08:22,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2913 to 1576. [2020-01-16 18:08:22,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:08:22,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7048 transitions. [2020-01-16 18:08:22,069 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7048 transitions. Word has length 28 [2020-01-16 18:08:22,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:22,070 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7048 transitions. [2020-01-16 18:08:22,070 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:22,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7048 transitions. [2020-01-16 18:08:22,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:22,072 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:22,072 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:08:22,072 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 18:08:22,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:22,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1617233524, now seen corresponding path program 406 times [2020-01-16 18:08:22,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:22,073 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617881007] [2020-01-16 18:08:22,073 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:22,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:22,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:08:22,612 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617881007] [2020-01-16 18:08:22,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:22,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:22,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504635869] [2020-01-16 18:08:22,612 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:22,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:22,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:22,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:22,613 INFO L87 Difference]: Start difference. First operand 1576 states and 7048 transitions. Second operand 11 states. [2020-01-16 18:08:22,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:22,787 INFO L93 Difference]: Finished difference Result 2930 states and 11669 transitions. [2020-01-16 18:08:22,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:22,787 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:22,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:22,795 INFO L225 Difference]: With dead ends: 2930 [2020-01-16 18:08:22,795 INFO L226 Difference]: Without dead ends: 2907 [2020-01-16 18:08:22,795 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 18:08:22,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2907 states. [2020-01-16 18:08:22,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2907 to 1570. [2020-01-16 18:08:22,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:08:22,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7031 transitions. [2020-01-16 18:08:22,861 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7031 transitions. Word has length 28 [2020-01-16 18:08:22,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:22,862 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7031 transitions. [2020-01-16 18:08:22,862 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:22,862 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7031 transitions. [2020-01-16 18:08:22,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:22,864 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:22,864 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 18:08:22,864 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 18:08:22,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:22,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1115602950, now seen corresponding path program 407 times [2020-01-16 18:08:22,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:22,864 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734874280] [2020-01-16 18:08:22,865 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:22,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:23,398 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 18:08:23,398 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734874280] [2020-01-16 18:08:23,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:23,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:23,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842933618] [2020-01-16 18:08:23,399 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:23,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:23,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:23,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:23,399 INFO L87 Difference]: Start difference. First operand 1570 states and 7031 transitions. Second operand 11 states. [2020-01-16 18:08:23,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:23,573 INFO L93 Difference]: Finished difference Result 2934 states and 11678 transitions. [2020-01-16 18:08:23,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:23,574 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:23,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:23,581 INFO L225 Difference]: With dead ends: 2934 [2020-01-16 18:08:23,581 INFO L226 Difference]: Without dead ends: 2916 [2020-01-16 18:08:23,582 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 18:08:23,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2020-01-16 18:08:23,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 1577. [2020-01-16 18:08:23,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:08:23,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7044 transitions. [2020-01-16 18:08:23,648 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7044 transitions. Word has length 28 [2020-01-16 18:08:23,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:23,648 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7044 transitions. [2020-01-16 18:08:23,648 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:23,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7044 transitions. [2020-01-16 18:08:23,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:23,650 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:23,651 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 18:08:23,651 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 18:08:23,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:23,651 INFO L82 PathProgramCache]: Analyzing trace with hash 544148144, now seen corresponding path program 408 times [2020-01-16 18:08:23,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:23,651 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943209756] [2020-01-16 18:08:23,651 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:23,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:24,189 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 18:08:24,190 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943209756] [2020-01-16 18:08:24,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:24,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:24,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734945980] [2020-01-16 18:08:24,190 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:24,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:24,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:24,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:24,191 INFO L87 Difference]: Start difference. First operand 1577 states and 7044 transitions. Second operand 11 states. [2020-01-16 18:08:24,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:24,374 INFO L93 Difference]: Finished difference Result 2933 states and 11669 transitions. [2020-01-16 18:08:24,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:24,375 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:24,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:24,382 INFO L225 Difference]: With dead ends: 2933 [2020-01-16 18:08:24,382 INFO L226 Difference]: Without dead ends: 2898 [2020-01-16 18:08:24,382 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:08:24,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2898 states. [2020-01-16 18:08:24,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2898 to 1559. [2020-01-16 18:08:24,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1559 states. [2020-01-16 18:08:24,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 7007 transitions. [2020-01-16 18:08:24,449 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 7007 transitions. Word has length 28 [2020-01-16 18:08:24,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:24,449 INFO L478 AbstractCegarLoop]: Abstraction has 1559 states and 7007 transitions. [2020-01-16 18:08:24,449 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:24,449 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 7007 transitions. [2020-01-16 18:08:24,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:24,451 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:24,451 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:08:24,451 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 18:08:24,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:24,451 INFO L82 PathProgramCache]: Analyzing trace with hash 847344676, now seen corresponding path program 409 times [2020-01-16 18:08:24,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:24,452 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642280373] [2020-01-16 18:08:24,452 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:24,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:24,989 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 18:08:24,989 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642280373] [2020-01-16 18:08:24,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:24,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:24,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921053051] [2020-01-16 18:08:24,990 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:24,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:24,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:24,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:24,990 INFO L87 Difference]: Start difference. First operand 1559 states and 7007 transitions. Second operand 11 states. [2020-01-16 18:08:25,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:25,169 INFO L93 Difference]: Finished difference Result 2896 states and 11596 transitions. [2020-01-16 18:08:25,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:25,170 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:25,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:25,177 INFO L225 Difference]: With dead ends: 2896 [2020-01-16 18:08:25,177 INFO L226 Difference]: Without dead ends: 2881 [2020-01-16 18:08:25,177 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 18:08:25,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2881 states. [2020-01-16 18:08:25,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2881 to 1572. [2020-01-16 18:08:25,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:08:25,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7050 transitions. [2020-01-16 18:08:25,243 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7050 transitions. Word has length 28 [2020-01-16 18:08:25,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:25,243 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7050 transitions. [2020-01-16 18:08:25,243 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:25,243 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7050 transitions. [2020-01-16 18:08:25,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:25,246 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:25,246 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 18:08:25,246 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 18:08:25,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:25,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1592047174, now seen corresponding path program 410 times [2020-01-16 18:08:25,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:25,246 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976762629] [2020-01-16 18:08:25,246 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:25,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:25,776 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 18:08:25,776 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976762629] [2020-01-16 18:08:25,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:25,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:25,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039919348] [2020-01-16 18:08:25,777 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:25,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:25,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:25,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:25,777 INFO L87 Difference]: Start difference. First operand 1572 states and 7050 transitions. Second operand 11 states. [2020-01-16 18:08:25,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:25,977 INFO L93 Difference]: Finished difference Result 2897 states and 11593 transitions. [2020-01-16 18:08:25,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:25,977 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:25,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:25,985 INFO L225 Difference]: With dead ends: 2897 [2020-01-16 18:08:25,985 INFO L226 Difference]: Without dead ends: 2876 [2020-01-16 18:08:25,985 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 18:08:26,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2876 states. [2020-01-16 18:08:26,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2876 to 1567. [2020-01-16 18:08:26,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:08:26,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7037 transitions. [2020-01-16 18:08:26,052 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7037 transitions. Word has length 28 [2020-01-16 18:08:26,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:26,052 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7037 transitions. [2020-01-16 18:08:26,052 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:26,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7037 transitions. [2020-01-16 18:08:26,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:26,054 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:26,055 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:08:26,055 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 18:08:26,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:26,055 INFO L82 PathProgramCache]: Analyzing trace with hash 312114874, now seen corresponding path program 411 times [2020-01-16 18:08:26,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:26,055 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365734922] [2020-01-16 18:08:26,055 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:26,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:26,588 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 18:08:26,589 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365734922] [2020-01-16 18:08:26,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:26,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:26,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142137899] [2020-01-16 18:08:26,589 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:26,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:26,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:26,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:26,590 INFO L87 Difference]: Start difference. First operand 1567 states and 7037 transitions. Second operand 11 states. [2020-01-16 18:08:26,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:26,799 INFO L93 Difference]: Finished difference Result 2893 states and 11585 transitions. [2020-01-16 18:08:26,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:26,800 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:26,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:26,807 INFO L225 Difference]: With dead ends: 2893 [2020-01-16 18:08:26,807 INFO L226 Difference]: Without dead ends: 2878 [2020-01-16 18:08:26,808 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 18:08:26,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2878 states. [2020-01-16 18:08:26,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2878 to 1571. [2020-01-16 18:08:26,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:08:26,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7044 transitions. [2020-01-16 18:08:26,874 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7044 transitions. Word has length 28 [2020-01-16 18:08:26,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:26,874 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7044 transitions. [2020-01-16 18:08:26,874 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:26,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7044 transitions. [2020-01-16 18:08:26,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:26,876 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:26,876 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 18:08:26,876 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 18:08:26,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:26,877 INFO L82 PathProgramCache]: Analyzing trace with hash 485362566, now seen corresponding path program 412 times [2020-01-16 18:08:26,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:26,877 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766829997] [2020-01-16 18:08:26,877 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:26,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:27,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:08:27,415 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766829997] [2020-01-16 18:08:27,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:27,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:27,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403393257] [2020-01-16 18:08:27,416 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:27,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:27,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:27,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:27,416 INFO L87 Difference]: Start difference. First operand 1571 states and 7044 transitions. Second operand 11 states. [2020-01-16 18:08:27,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:27,622 INFO L93 Difference]: Finished difference Result 2892 states and 11579 transitions. [2020-01-16 18:08:27,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:27,623 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:27,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:27,630 INFO L225 Difference]: With dead ends: 2892 [2020-01-16 18:08:27,631 INFO L226 Difference]: Without dead ends: 2874 [2020-01-16 18:08:27,631 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:08:27,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2874 states. [2020-01-16 18:08:27,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2874 to 1567. [2020-01-16 18:08:27,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:08:27,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7033 transitions. [2020-01-16 18:08:27,717 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7033 transitions. Word has length 28 [2020-01-16 18:08:27,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:27,717 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7033 transitions. [2020-01-16 18:08:27,717 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:27,717 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7033 transitions. [2020-01-16 18:08:27,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:27,719 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:27,719 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 18:08:27,719 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 18:08:27,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:27,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1627208966, now seen corresponding path program 413 times [2020-01-16 18:08:27,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:27,720 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178574171] [2020-01-16 18:08:27,720 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:27,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:28,251 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 18:08:28,252 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178574171] [2020-01-16 18:08:28,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:28,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:28,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945561879] [2020-01-16 18:08:28,252 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:28,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:28,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:28,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:28,253 INFO L87 Difference]: Start difference. First operand 1567 states and 7033 transitions. Second operand 11 states. [2020-01-16 18:08:28,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:28,432 INFO L93 Difference]: Finished difference Result 2895 states and 11585 transitions. [2020-01-16 18:08:28,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:28,432 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:28,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:28,439 INFO L225 Difference]: With dead ends: 2895 [2020-01-16 18:08:28,439 INFO L226 Difference]: Without dead ends: 2879 [2020-01-16 18:08:28,439 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:08:28,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2879 states. [2020-01-16 18:08:28,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2879 to 1571. [2020-01-16 18:08:28,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:08:28,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7040 transitions. [2020-01-16 18:08:28,506 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7040 transitions. Word has length 28 [2020-01-16 18:08:28,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:28,506 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7040 transitions. [2020-01-16 18:08:28,506 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:28,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7040 transitions. [2020-01-16 18:08:28,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:28,508 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:28,508 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:08:28,508 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 18:08:28,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:28,509 INFO L82 PathProgramCache]: Analyzing trace with hash 2096303524, now seen corresponding path program 414 times [2020-01-16 18:08:28,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:28,509 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844239001] [2020-01-16 18:08:28,509 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:28,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:29,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:08:29,040 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844239001] [2020-01-16 18:08:29,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:29,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:29,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508948229] [2020-01-16 18:08:29,041 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:29,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:29,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:29,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:29,041 INFO L87 Difference]: Start difference. First operand 1571 states and 7040 transitions. Second operand 11 states. [2020-01-16 18:08:29,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:29,214 INFO L93 Difference]: Finished difference Result 2893 states and 11577 transitions. [2020-01-16 18:08:29,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:29,214 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:29,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:29,221 INFO L225 Difference]: With dead ends: 2893 [2020-01-16 18:08:29,221 INFO L226 Difference]: Without dead ends: 2871 [2020-01-16 18:08:29,221 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 18:08:29,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2871 states. [2020-01-16 18:08:29,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2871 to 1563. [2020-01-16 18:08:29,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 18:08:29,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7022 transitions. [2020-01-16 18:08:29,288 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7022 transitions. Word has length 28 [2020-01-16 18:08:29,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:29,288 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7022 transitions. [2020-01-16 18:08:29,288 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:29,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7022 transitions. [2020-01-16 18:08:29,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:29,290 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:29,290 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 18:08:29,290 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 18:08:29,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:29,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1941436264, now seen corresponding path program 415 times [2020-01-16 18:08:29,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:29,291 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347530697] [2020-01-16 18:08:29,291 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:29,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:29,820 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 18:08:29,820 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347530697] [2020-01-16 18:08:29,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:29,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:29,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619763946] [2020-01-16 18:08:29,821 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:29,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:29,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:29,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:29,821 INFO L87 Difference]: Start difference. First operand 1563 states and 7022 transitions. Second operand 11 states. [2020-01-16 18:08:29,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:29,987 INFO L93 Difference]: Finished difference Result 2903 states and 11611 transitions. [2020-01-16 18:08:29,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:29,988 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:29,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:29,995 INFO L225 Difference]: With dead ends: 2903 [2020-01-16 18:08:29,995 INFO L226 Difference]: Without dead ends: 2888 [2020-01-16 18:08:29,995 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 18:08:30,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2888 states. [2020-01-16 18:08:30,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2888 to 1573. [2020-01-16 18:08:30,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:08:30,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7050 transitions. [2020-01-16 18:08:30,062 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7050 transitions. Word has length 28 [2020-01-16 18:08:30,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:30,062 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7050 transitions. [2020-01-16 18:08:30,062 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:30,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7050 transitions. [2020-01-16 18:08:30,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:30,064 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:30,064 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 18:08:30,064 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 18:08:30,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:30,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1608828534, now seen corresponding path program 416 times [2020-01-16 18:08:30,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:30,065 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258990034] [2020-01-16 18:08:30,065 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:30,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:30,593 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 18:08:30,594 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258990034] [2020-01-16 18:08:30,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:30,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:30,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42604385] [2020-01-16 18:08:30,594 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:30,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:30,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:30,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:30,595 INFO L87 Difference]: Start difference. First operand 1573 states and 7050 transitions. Second operand 11 states. [2020-01-16 18:08:30,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:30,771 INFO L93 Difference]: Finished difference Result 2904 states and 11608 transitions. [2020-01-16 18:08:30,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:30,772 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:30,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:30,779 INFO L225 Difference]: With dead ends: 2904 [2020-01-16 18:08:30,779 INFO L226 Difference]: Without dead ends: 2883 [2020-01-16 18:08:30,780 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:08:30,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2883 states. [2020-01-16 18:08:30,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2883 to 1568. [2020-01-16 18:08:30,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 18:08:30,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7036 transitions. [2020-01-16 18:08:30,846 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7036 transitions. Word has length 28 [2020-01-16 18:08:30,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:30,846 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7036 transitions. [2020-01-16 18:08:30,846 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:30,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7036 transitions. [2020-01-16 18:08:30,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:30,849 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:30,849 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 18:08:30,849 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 18:08:30,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:30,849 INFO L82 PathProgramCache]: Analyzing trace with hash 333121082, now seen corresponding path program 417 times [2020-01-16 18:08:30,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:30,849 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983907655] [2020-01-16 18:08:30,849 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:30,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:31,379 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 18:08:31,380 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983907655] [2020-01-16 18:08:31,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:31,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:31,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988714135] [2020-01-16 18:08:31,380 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:31,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:31,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:31,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:31,381 INFO L87 Difference]: Start difference. First operand 1568 states and 7036 transitions. Second operand 11 states. [2020-01-16 18:08:31,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:31,552 INFO L93 Difference]: Finished difference Result 2904 states and 11608 transitions. [2020-01-16 18:08:31,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:31,552 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:31,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:31,559 INFO L225 Difference]: With dead ends: 2904 [2020-01-16 18:08:31,559 INFO L226 Difference]: Without dead ends: 2889 [2020-01-16 18:08:31,560 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 18:08:31,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2889 states. [2020-01-16 18:08:31,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2889 to 1573. [2020-01-16 18:08:31,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:08:31,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7045 transitions. [2020-01-16 18:08:31,626 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7045 transitions. Word has length 28 [2020-01-16 18:08:31,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:31,626 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7045 transitions. [2020-01-16 18:08:31,626 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:31,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7045 transitions. [2020-01-16 18:08:31,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:31,629 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:31,629 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 18:08:31,629 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 18:08:31,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:31,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1995773770, now seen corresponding path program 418 times [2020-01-16 18:08:31,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:31,629 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847183226] [2020-01-16 18:08:31,629 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:31,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:32,168 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 18:08:32,168 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847183226] [2020-01-16 18:08:32,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:32,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:32,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428991029] [2020-01-16 18:08:32,169 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:32,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:32,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:32,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:32,169 INFO L87 Difference]: Start difference. First operand 1573 states and 7045 transitions. Second operand 11 states. [2020-01-16 18:08:32,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:32,353 INFO L93 Difference]: Finished difference Result 2906 states and 11607 transitions. [2020-01-16 18:08:32,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:32,353 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:32,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:32,361 INFO L225 Difference]: With dead ends: 2906 [2020-01-16 18:08:32,361 INFO L226 Difference]: Without dead ends: 2884 [2020-01-16 18:08:32,361 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 18:08:32,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2884 states. [2020-01-16 18:08:32,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2884 to 1568. [2020-01-16 18:08:32,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 18:08:32,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7031 transitions. [2020-01-16 18:08:32,429 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7031 transitions. Word has length 28 [2020-01-16 18:08:32,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:32,429 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7031 transitions. [2020-01-16 18:08:32,429 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:32,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7031 transitions. [2020-01-16 18:08:32,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:32,431 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:32,431 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 18:08:32,431 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 18:08:32,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:32,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1606202758, now seen corresponding path program 419 times [2020-01-16 18:08:32,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:32,432 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387058320] [2020-01-16 18:08:32,432 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:32,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:32,971 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 18:08:32,972 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387058320] [2020-01-16 18:08:32,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:32,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:32,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985183572] [2020-01-16 18:08:32,972 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:32,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:32,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:32,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:32,973 INFO L87 Difference]: Start difference. First operand 1568 states and 7031 transitions. Second operand 11 states. [2020-01-16 18:08:33,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:33,197 INFO L93 Difference]: Finished difference Result 2907 states and 11610 transitions. [2020-01-16 18:08:33,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:33,197 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:33,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:33,205 INFO L225 Difference]: With dead ends: 2907 [2020-01-16 18:08:33,205 INFO L226 Difference]: Without dead ends: 2891 [2020-01-16 18:08:33,205 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 18:08:33,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2891 states. [2020-01-16 18:08:33,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2891 to 1574. [2020-01-16 18:08:33,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:08:33,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7042 transitions. [2020-01-16 18:08:33,274 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7042 transitions. Word has length 28 [2020-01-16 18:08:33,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:33,274 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7042 transitions. [2020-01-16 18:08:33,274 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:33,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7042 transitions. [2020-01-16 18:08:33,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:33,276 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:33,276 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 18:08:33,276 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 18:08:33,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:33,276 INFO L82 PathProgramCache]: Analyzing trace with hash -688252568, now seen corresponding path program 420 times [2020-01-16 18:08:33,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:33,277 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834366940] [2020-01-16 18:08:33,277 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:33,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:33,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:08:33,831 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834366940] [2020-01-16 18:08:33,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:33,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:33,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967117275] [2020-01-16 18:08:33,832 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:33,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:33,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:33,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:33,832 INFO L87 Difference]: Start difference. First operand 1574 states and 7042 transitions. Second operand 11 states. [2020-01-16 18:08:34,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:34,013 INFO L93 Difference]: Finished difference Result 2908 states and 11606 transitions. [2020-01-16 18:08:34,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:34,013 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:34,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:34,021 INFO L225 Difference]: With dead ends: 2908 [2020-01-16 18:08:34,021 INFO L226 Difference]: Without dead ends: 2880 [2020-01-16 18:08:34,021 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 18:08:34,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2880 states. [2020-01-16 18:08:34,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2880 to 1563. [2020-01-16 18:08:34,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 18:08:34,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7018 transitions. [2020-01-16 18:08:34,087 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7018 transitions. Word has length 28 [2020-01-16 18:08:34,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:34,087 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7018 transitions. [2020-01-16 18:08:34,087 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:34,087 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7018 transitions. [2020-01-16 18:08:34,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:34,089 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:34,090 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 18:08:34,090 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 18:08:34,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:34,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1993951784, now seen corresponding path program 421 times [2020-01-16 18:08:34,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:34,090 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943870933] [2020-01-16 18:08:34,090 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:34,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:34,612 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 18:08:34,613 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943870933] [2020-01-16 18:08:34,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:34,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:34,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136196408] [2020-01-16 18:08:34,613 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:34,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:34,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:34,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:34,614 INFO L87 Difference]: Start difference. First operand 1563 states and 7018 transitions. Second operand 11 states. [2020-01-16 18:08:34,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:34,820 INFO L93 Difference]: Finished difference Result 2894 states and 11583 transitions. [2020-01-16 18:08:34,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:34,821 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:34,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:34,828 INFO L225 Difference]: With dead ends: 2894 [2020-01-16 18:08:34,828 INFO L226 Difference]: Without dead ends: 2879 [2020-01-16 18:08:34,828 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:08:34,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2879 states. [2020-01-16 18:08:34,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2879 to 1571. [2020-01-16 18:08:34,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:08:34,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7040 transitions. [2020-01-16 18:08:34,896 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7040 transitions. Word has length 28 [2020-01-16 18:08:34,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:34,896 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7040 transitions. [2020-01-16 18:08:34,896 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:34,896 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7040 transitions. [2020-01-16 18:08:34,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:34,898 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:34,898 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:08:34,898 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 18:08:34,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:34,899 INFO L82 PathProgramCache]: Analyzing trace with hash -2127767820, now seen corresponding path program 422 times [2020-01-16 18:08:34,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:34,899 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512688215] [2020-01-16 18:08:34,899 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:34,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:35,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:08:35,429 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512688215] [2020-01-16 18:08:35,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:35,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:35,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917129494] [2020-01-16 18:08:35,430 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:35,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:35,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:35,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:35,430 INFO L87 Difference]: Start difference. First operand 1571 states and 7040 transitions. Second operand 11 states. [2020-01-16 18:08:35,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:35,628 INFO L93 Difference]: Finished difference Result 2893 states and 11577 transitions. [2020-01-16 18:08:35,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:35,629 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:35,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:35,637 INFO L225 Difference]: With dead ends: 2893 [2020-01-16 18:08:35,637 INFO L226 Difference]: Without dead ends: 2875 [2020-01-16 18:08:35,637 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 18:08:35,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2875 states. [2020-01-16 18:08:35,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2875 to 1567. [2020-01-16 18:08:35,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:08:35,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7029 transitions. [2020-01-16 18:08:35,703 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7029 transitions. Word has length 28 [2020-01-16 18:08:35,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:35,703 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7029 transitions. [2020-01-16 18:08:35,703 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:35,703 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7029 transitions. [2020-01-16 18:08:35,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:35,706 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:35,706 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 18:08:35,706 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 18:08:35,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:35,706 INFO L82 PathProgramCache]: Analyzing trace with hash 920866404, now seen corresponding path program 423 times [2020-01-16 18:08:35,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:35,706 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026708555] [2020-01-16 18:08:35,706 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:35,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:36,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:08:36,229 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026708555] [2020-01-16 18:08:36,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:36,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:36,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929066500] [2020-01-16 18:08:36,229 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:36,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:36,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:36,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:36,229 INFO L87 Difference]: Start difference. First operand 1567 states and 7029 transitions. Second operand 11 states. [2020-01-16 18:08:36,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:36,425 INFO L93 Difference]: Finished difference Result 2898 states and 11588 transitions. [2020-01-16 18:08:36,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:36,425 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:36,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:36,432 INFO L225 Difference]: With dead ends: 2898 [2020-01-16 18:08:36,432 INFO L226 Difference]: Without dead ends: 2883 [2020-01-16 18:08:36,432 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:08:36,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2883 states. [2020-01-16 18:08:36,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2883 to 1572. [2020-01-16 18:08:36,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:08:36,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7038 transitions. [2020-01-16 18:08:36,498 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7038 transitions. Word has length 28 [2020-01-16 18:08:36,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:36,498 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7038 transitions. [2020-01-16 18:08:36,498 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:36,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7038 transitions. [2020-01-16 18:08:36,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:36,501 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:36,501 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:08:36,501 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 18:08:36,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:36,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1711448204, now seen corresponding path program 424 times [2020-01-16 18:08:36,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:36,501 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018733391] [2020-01-16 18:08:36,501 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:36,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:37,020 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 18:08:37,021 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018733391] [2020-01-16 18:08:37,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:37,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:37,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235501965] [2020-01-16 18:08:37,021 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:37,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:37,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:37,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:37,022 INFO L87 Difference]: Start difference. First operand 1572 states and 7038 transitions. Second operand 11 states. [2020-01-16 18:08:37,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:37,235 INFO L93 Difference]: Finished difference Result 2900 states and 11587 transitions. [2020-01-16 18:08:37,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:37,235 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:37,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:37,242 INFO L225 Difference]: With dead ends: 2900 [2020-01-16 18:08:37,242 INFO L226 Difference]: Without dead ends: 2878 [2020-01-16 18:08:37,243 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 18:08:37,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2878 states. [2020-01-16 18:08:37,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2878 to 1567. [2020-01-16 18:08:37,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:08:37,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7025 transitions. [2020-01-16 18:08:37,308 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7025 transitions. Word has length 28 [2020-01-16 18:08:37,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:37,308 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7025 transitions. [2020-01-16 18:08:37,308 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:37,309 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7025 transitions. [2020-01-16 18:08:37,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:37,311 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:37,311 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:08:37,311 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 18:08:37,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:37,311 INFO L82 PathProgramCache]: Analyzing trace with hash -2125142044, now seen corresponding path program 425 times [2020-01-16 18:08:37,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:37,311 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255978449] [2020-01-16 18:08:37,311 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:37,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:37,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:08:37,831 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255978449] [2020-01-16 18:08:37,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:37,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:37,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178263877] [2020-01-16 18:08:37,832 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:37,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:37,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:37,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:37,832 INFO L87 Difference]: Start difference. First operand 1567 states and 7025 transitions. Second operand 11 states. [2020-01-16 18:08:38,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:38,069 INFO L93 Difference]: Finished difference Result 2895 states and 11577 transitions. [2020-01-16 18:08:38,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:38,070 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:38,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:38,077 INFO L225 Difference]: With dead ends: 2895 [2020-01-16 18:08:38,077 INFO L226 Difference]: Without dead ends: 2881 [2020-01-16 18:08:38,077 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 18:08:38,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2881 states. [2020-01-16 18:08:38,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2881 to 1571. [2020-01-16 18:08:38,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:08:38,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7032 transitions. [2020-01-16 18:08:38,143 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7032 transitions. Word has length 28 [2020-01-16 18:08:38,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:38,143 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7032 transitions. [2020-01-16 18:08:38,143 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:38,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7032 transitions. [2020-01-16 18:08:38,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:38,146 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:38,146 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 18:08:38,146 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 18:08:38,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:38,146 INFO L82 PathProgramCache]: Analyzing trace with hash -635737048, now seen corresponding path program 426 times [2020-01-16 18:08:38,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:38,146 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179065924] [2020-01-16 18:08:38,146 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:38,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:38,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:08:38,671 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179065924] [2020-01-16 18:08:38,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:38,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:38,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242406661] [2020-01-16 18:08:38,672 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:38,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:38,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:38,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:38,672 INFO L87 Difference]: Start difference. First operand 1571 states and 7032 transitions. Second operand 11 states. [2020-01-16 18:08:38,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:38,879 INFO L93 Difference]: Finished difference Result 2898 states and 11579 transitions. [2020-01-16 18:08:38,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:38,879 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:38,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:38,886 INFO L225 Difference]: With dead ends: 2898 [2020-01-16 18:08:38,886 INFO L226 Difference]: Without dead ends: 2873 [2020-01-16 18:08:38,886 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 18:08:38,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2873 states. [2020-01-16 18:08:38,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2873 to 1563. [2020-01-16 18:08:38,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 18:08:38,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7014 transitions. [2020-01-16 18:08:38,952 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7014 transitions. Word has length 28 [2020-01-16 18:08:38,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:38,952 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7014 transitions. [2020-01-16 18:08:38,952 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:38,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7014 transitions. [2020-01-16 18:08:38,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:38,954 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:38,955 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 18:08:38,955 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 18:08:38,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:38,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1545809910, now seen corresponding path program 427 times [2020-01-16 18:08:38,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:38,955 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836464770] [2020-01-16 18:08:38,955 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:38,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:39,496 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 18:08:39,497 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836464770] [2020-01-16 18:08:39,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:39,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:39,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536536272] [2020-01-16 18:08:39,497 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:39,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:39,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:39,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:39,498 INFO L87 Difference]: Start difference. First operand 1563 states and 7014 transitions. Second operand 11 states. [2020-01-16 18:08:39,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:39,693 INFO L93 Difference]: Finished difference Result 2898 states and 11588 transitions. [2020-01-16 18:08:39,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:39,693 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:39,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:39,701 INFO L225 Difference]: With dead ends: 2898 [2020-01-16 18:08:39,701 INFO L226 Difference]: Without dead ends: 2882 [2020-01-16 18:08:39,701 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 18:08:39,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2882 states. [2020-01-16 18:08:39,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2882 to 1571. [2020-01-16 18:08:39,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:08:39,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7036 transitions. [2020-01-16 18:08:39,770 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7036 transitions. Word has length 28 [2020-01-16 18:08:39,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:39,770 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7036 transitions. [2020-01-16 18:08:39,770 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:39,770 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7036 transitions. [2020-01-16 18:08:39,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:39,772 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:39,772 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 18:08:39,772 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 18:08:39,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:39,773 INFO L82 PathProgramCache]: Analyzing trace with hash -2117264716, now seen corresponding path program 428 times [2020-01-16 18:08:39,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:39,773 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304576060] [2020-01-16 18:08:39,773 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:39,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:40,292 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 18:08:40,292 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304576060] [2020-01-16 18:08:40,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:40,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:40,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435595708] [2020-01-16 18:08:40,292 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:40,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:40,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:40,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:40,293 INFO L87 Difference]: Start difference. First operand 1571 states and 7036 transitions. Second operand 11 states. [2020-01-16 18:08:40,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:40,508 INFO L93 Difference]: Finished difference Result 2896 states and 11580 transitions. [2020-01-16 18:08:40,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:40,509 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:40,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:40,516 INFO L225 Difference]: With dead ends: 2896 [2020-01-16 18:08:40,516 INFO L226 Difference]: Without dead ends: 2878 [2020-01-16 18:08:40,517 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 18:08:40,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2878 states. [2020-01-16 18:08:40,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2878 to 1567. [2020-01-16 18:08:40,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:08:40,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7025 transitions. [2020-01-16 18:08:40,584 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7025 transitions. Word has length 28 [2020-01-16 18:08:40,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:40,585 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7025 transitions. [2020-01-16 18:08:40,585 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:40,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7025 transitions. [2020-01-16 18:08:40,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:40,587 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:40,587 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:08:40,587 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 18:08:40,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:40,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1676072006, now seen corresponding path program 429 times [2020-01-16 18:08:40,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:40,588 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956684992] [2020-01-16 18:08:40,588 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:40,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:41,118 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 18:08:41,118 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956684992] [2020-01-16 18:08:41,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:41,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:41,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716050196] [2020-01-16 18:08:41,119 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:41,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:41,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:41,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:41,119 INFO L87 Difference]: Start difference. First operand 1567 states and 7025 transitions. Second operand 11 states. [2020-01-16 18:08:41,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:41,317 INFO L93 Difference]: Finished difference Result 2903 states and 11596 transitions. [2020-01-16 18:08:41,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:41,317 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:41,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:41,325 INFO L225 Difference]: With dead ends: 2903 [2020-01-16 18:08:41,325 INFO L226 Difference]: Without dead ends: 2887 [2020-01-16 18:08:41,325 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 18:08:41,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2887 states. [2020-01-16 18:08:41,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2887 to 1573. [2020-01-16 18:08:41,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:08:41,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7036 transitions. [2020-01-16 18:08:41,397 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7036 transitions. Word has length 28 [2020-01-16 18:08:41,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:41,397 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7036 transitions. [2020-01-16 18:08:41,397 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:41,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7036 transitions. [2020-01-16 18:08:41,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:41,400 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:41,400 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:08:41,400 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 18:08:41,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:41,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1700945100, now seen corresponding path program 430 times [2020-01-16 18:08:41,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:41,401 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637086136] [2020-01-16 18:08:41,401 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:41,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:41,935 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 18:08:41,935 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637086136] [2020-01-16 18:08:41,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:41,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:41,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928802168] [2020-01-16 18:08:41,935 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:41,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:41,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:41,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:41,936 INFO L87 Difference]: Start difference. First operand 1573 states and 7036 transitions. Second operand 11 states. [2020-01-16 18:08:42,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:42,127 INFO L93 Difference]: Finished difference Result 2904 states and 11592 transitions. [2020-01-16 18:08:42,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:42,128 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:42,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:42,135 INFO L225 Difference]: With dead ends: 2904 [2020-01-16 18:08:42,135 INFO L226 Difference]: Without dead ends: 2881 [2020-01-16 18:08:42,136 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:08:42,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2881 states. [2020-01-16 18:08:42,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2881 to 1567. [2020-01-16 18:08:42,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:08:42,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7021 transitions. [2020-01-16 18:08:42,202 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7021 transitions. Word has length 28 [2020-01-16 18:08:42,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:42,202 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7021 transitions. [2020-01-16 18:08:42,202 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:42,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7021 transitions. [2020-01-16 18:08:42,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:42,204 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:42,204 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 18:08:42,204 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 18:08:42,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:42,205 INFO L82 PathProgramCache]: Analyzing trace with hash 569387398, now seen corresponding path program 431 times [2020-01-16 18:08:42,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:42,205 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732101745] [2020-01-16 18:08:42,205 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:42,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:42,731 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:08:42,738 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 18:08:42,738 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732101745] [2020-01-16 18:08:42,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:42,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:42,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770904469] [2020-01-16 18:08:42,739 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:42,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:42,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:42,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:42,739 INFO L87 Difference]: Start difference. First operand 1567 states and 7021 transitions. Second operand 11 states. [2020-01-16 18:08:42,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:42,928 INFO L93 Difference]: Finished difference Result 2897 states and 11578 transitions. [2020-01-16 18:08:42,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:42,929 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:42,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:42,935 INFO L225 Difference]: With dead ends: 2897 [2020-01-16 18:08:42,936 INFO L226 Difference]: Without dead ends: 2883 [2020-01-16 18:08:42,936 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:08:42,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2883 states. [2020-01-16 18:08:42,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2883 to 1571. [2020-01-16 18:08:42,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:08:43,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7028 transitions. [2020-01-16 18:08:43,001 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7028 transitions. Word has length 28 [2020-01-16 18:08:43,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:43,001 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7028 transitions. [2020-01-16 18:08:43,002 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:43,002 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7028 transitions. [2020-01-16 18:08:43,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:43,004 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:43,004 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:08:43,004 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 18:08:43,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:43,004 INFO L82 PathProgramCache]: Analyzing trace with hash 2058792394, now seen corresponding path program 432 times [2020-01-16 18:08:43,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:43,004 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171695766] [2020-01-16 18:08:43,004 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:43,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:43,532 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:08:43,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:08:43,540 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171695766] [2020-01-16 18:08:43,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:43,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:43,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139515397] [2020-01-16 18:08:43,540 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:43,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:43,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:43,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:43,541 INFO L87 Difference]: Start difference. First operand 1571 states and 7028 transitions. Second operand 11 states. [2020-01-16 18:08:43,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:43,762 INFO L93 Difference]: Finished difference Result 2900 states and 11580 transitions. [2020-01-16 18:08:43,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:43,762 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:43,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:43,770 INFO L225 Difference]: With dead ends: 2900 [2020-01-16 18:08:43,770 INFO L226 Difference]: Without dead ends: 2871 [2020-01-16 18:08:43,770 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 18:08:43,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2871 states. [2020-01-16 18:08:43,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2871 to 1559. [2020-01-16 18:08:43,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1559 states. [2020-01-16 18:08:43,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 7003 transitions. [2020-01-16 18:08:43,836 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 7003 transitions. Word has length 28 [2020-01-16 18:08:43,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:43,837 INFO L478 AbstractCegarLoop]: Abstraction has 1559 states and 7003 transitions. [2020-01-16 18:08:43,837 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:43,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 7003 transitions. [2020-01-16 18:08:43,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:43,839 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:43,839 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 18:08:43,839 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 18:08:43,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:43,839 INFO L82 PathProgramCache]: Analyzing trace with hash 425451744, now seen corresponding path program 433 times [2020-01-16 18:08:43,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:43,839 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496617258] [2020-01-16 18:08:43,840 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:43,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:44,357 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 18:08:44,357 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496617258] [2020-01-16 18:08:44,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:44,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:44,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333725698] [2020-01-16 18:08:44,358 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:44,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:44,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:44,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:44,358 INFO L87 Difference]: Start difference. First operand 1559 states and 7003 transitions. Second operand 11 states. [2020-01-16 18:08:44,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:44,537 INFO L93 Difference]: Finished difference Result 2903 states and 11607 transitions. [2020-01-16 18:08:44,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:44,537 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:44,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:44,544 INFO L225 Difference]: With dead ends: 2903 [2020-01-16 18:08:44,544 INFO L226 Difference]: Without dead ends: 2888 [2020-01-16 18:08:44,544 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:08:44,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2888 states. [2020-01-16 18:08:44,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2888 to 1572. [2020-01-16 18:08:44,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:08:44,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7046 transitions. [2020-01-16 18:08:44,610 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7046 transitions. Word has length 28 [2020-01-16 18:08:44,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:44,611 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7046 transitions. [2020-01-16 18:08:44,611 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:44,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7046 transitions. [2020-01-16 18:08:44,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:44,613 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:44,613 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 18:08:44,613 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 18:08:44,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:44,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1635408058, now seen corresponding path program 434 times [2020-01-16 18:08:44,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:44,614 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775919117] [2020-01-16 18:08:44,614 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:44,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:45,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:08:45,180 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775919117] [2020-01-16 18:08:45,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:45,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:45,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058450323] [2020-01-16 18:08:45,180 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:45,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:45,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:45,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:45,181 INFO L87 Difference]: Start difference. First operand 1572 states and 7046 transitions. Second operand 11 states. [2020-01-16 18:08:45,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:45,352 INFO L93 Difference]: Finished difference Result 2906 states and 11608 transitions. [2020-01-16 18:08:45,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:45,353 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:45,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:45,360 INFO L225 Difference]: With dead ends: 2906 [2020-01-16 18:08:45,360 INFO L226 Difference]: Without dead ends: 2883 [2020-01-16 18:08:45,360 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 18:08:45,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2883 states. [2020-01-16 18:08:45,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2883 to 1567. [2020-01-16 18:08:45,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:08:45,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7033 transitions. [2020-01-16 18:08:45,426 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7033 transitions. Word has length 28 [2020-01-16 18:08:45,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:45,426 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7033 transitions. [2020-01-16 18:08:45,426 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:45,426 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7033 transitions. [2020-01-16 18:08:45,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:45,428 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:45,429 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:08:45,429 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 18:08:45,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:45,429 INFO L82 PathProgramCache]: Analyzing trace with hash 963307322, now seen corresponding path program 435 times [2020-01-16 18:08:45,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:45,429 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964956760] [2020-01-16 18:08:45,429 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:45,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:45,953 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 18:08:45,953 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964956760] [2020-01-16 18:08:45,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:45,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:45,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293694476] [2020-01-16 18:08:45,954 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:45,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:45,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:45,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:45,954 INFO L87 Difference]: Start difference. First operand 1567 states and 7033 transitions. Second operand 11 states. [2020-01-16 18:08:46,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:46,157 INFO L93 Difference]: Finished difference Result 2898 states and 11592 transitions. [2020-01-16 18:08:46,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:46,158 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:46,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:46,167 INFO L225 Difference]: With dead ends: 2898 [2020-01-16 18:08:46,167 INFO L226 Difference]: Without dead ends: 2883 [2020-01-16 18:08:46,167 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:08:46,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2883 states. [2020-01-16 18:08:46,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2883 to 1571. [2020-01-16 18:08:46,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:08:46,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7040 transitions. [2020-01-16 18:08:46,235 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7040 transitions. Word has length 28 [2020-01-16 18:08:46,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:46,235 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7040 transitions. [2020-01-16 18:08:46,235 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:46,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7040 transitions. [2020-01-16 18:08:46,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:46,238 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:46,238 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 18:08:46,238 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 18:08:46,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:46,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1136555014, now seen corresponding path program 436 times [2020-01-16 18:08:46,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:46,238 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893819514] [2020-01-16 18:08:46,238 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:46,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:46,764 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 18:08:46,764 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893819514] [2020-01-16 18:08:46,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:46,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:46,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131456978] [2020-01-16 18:08:46,765 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:46,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:46,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:46,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:46,765 INFO L87 Difference]: Start difference. First operand 1571 states and 7040 transitions. Second operand 11 states. [2020-01-16 18:08:46,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:46,967 INFO L93 Difference]: Finished difference Result 2897 states and 11586 transitions. [2020-01-16 18:08:46,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:46,968 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:46,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:46,975 INFO L225 Difference]: With dead ends: 2897 [2020-01-16 18:08:46,975 INFO L226 Difference]: Without dead ends: 2879 [2020-01-16 18:08:46,975 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 18:08:47,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2879 states. [2020-01-16 18:08:47,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2879 to 1567. [2020-01-16 18:08:47,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:08:47,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7029 transitions. [2020-01-16 18:08:47,042 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7029 transitions. Word has length 28 [2020-01-16 18:08:47,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:47,042 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7029 transitions. [2020-01-16 18:08:47,042 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:47,042 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7029 transitions. [2020-01-16 18:08:47,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:47,044 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:47,044 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 18:08:47,044 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 18:08:47,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:47,045 INFO L82 PathProgramCache]: Analyzing trace with hash -559696902, now seen corresponding path program 437 times [2020-01-16 18:08:47,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:47,045 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091539515] [2020-01-16 18:08:47,045 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:47,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:47,599 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 18:08:47,599 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091539515] [2020-01-16 18:08:47,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:47,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:47,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140909224] [2020-01-16 18:08:47,600 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:47,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:47,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:47,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:47,600 INFO L87 Difference]: Start difference. First operand 1567 states and 7029 transitions. Second operand 11 states. [2020-01-16 18:08:47,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:47,789 INFO L93 Difference]: Finished difference Result 2904 states and 11600 transitions. [2020-01-16 18:08:47,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:47,791 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:47,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:47,797 INFO L225 Difference]: With dead ends: 2904 [2020-01-16 18:08:47,797 INFO L226 Difference]: Without dead ends: 2886 [2020-01-16 18:08:47,797 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 18:08:47,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2886 states. [2020-01-16 18:08:47,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2886 to 1571. [2020-01-16 18:08:47,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:08:47,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7036 transitions. [2020-01-16 18:08:47,863 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7036 transitions. Word has length 28 [2020-01-16 18:08:47,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:47,863 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7036 transitions. [2020-01-16 18:08:47,863 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:47,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7036 transitions. [2020-01-16 18:08:47,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:47,866 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:47,866 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 18:08:47,866 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 18:08:47,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:47,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1674410592, now seen corresponding path program 438 times [2020-01-16 18:08:47,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:47,866 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574632445] [2020-01-16 18:08:47,866 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:47,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:48,389 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 18:08:48,389 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574632445] [2020-01-16 18:08:48,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:48,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:48,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836941335] [2020-01-16 18:08:48,389 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:48,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:48,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:48,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:48,390 INFO L87 Difference]: Start difference. First operand 1571 states and 7036 transitions. Second operand 11 states. [2020-01-16 18:08:48,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:48,570 INFO L93 Difference]: Finished difference Result 2900 states and 11588 transitions. [2020-01-16 18:08:48,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:48,571 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:48,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:48,578 INFO L225 Difference]: With dead ends: 2900 [2020-01-16 18:08:48,578 INFO L226 Difference]: Without dead ends: 2878 [2020-01-16 18:08:48,579 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 18:08:48,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2878 states. [2020-01-16 18:08:48,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2878 to 1563. [2020-01-16 18:08:48,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 18:08:48,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7018 transitions. [2020-01-16 18:08:48,645 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7018 transitions. Word has length 28 [2020-01-16 18:08:48,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:48,645 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7018 transitions. [2020-01-16 18:08:48,645 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:48,645 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7018 transitions. [2020-01-16 18:08:48,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:48,648 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:48,648 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:08:48,648 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 18:08:48,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:48,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1519543332, now seen corresponding path program 439 times [2020-01-16 18:08:48,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:48,648 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44010742] [2020-01-16 18:08:48,648 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:48,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:49,172 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 18:08:49,172 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44010742] [2020-01-16 18:08:49,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:49,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:49,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675063371] [2020-01-16 18:08:49,172 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:49,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:49,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:49,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:49,173 INFO L87 Difference]: Start difference. First operand 1563 states and 7018 transitions. Second operand 11 states. [2020-01-16 18:08:49,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:49,354 INFO L93 Difference]: Finished difference Result 2911 states and 11625 transitions. [2020-01-16 18:08:49,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:49,355 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:49,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:49,362 INFO L225 Difference]: With dead ends: 2911 [2020-01-16 18:08:49,362 INFO L226 Difference]: Without dead ends: 2896 [2020-01-16 18:08:49,363 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 18:08:49,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2896 states. [2020-01-16 18:08:49,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2896 to 1573. [2020-01-16 18:08:49,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:08:49,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7046 transitions. [2020-01-16 18:08:49,429 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7046 transitions. Word has length 28 [2020-01-16 18:08:49,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:49,429 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7046 transitions. [2020-01-16 18:08:49,429 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:49,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7046 transitions. [2020-01-16 18:08:49,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:49,431 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:49,431 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 18:08:49,432 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 18:08:49,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:49,432 INFO L82 PathProgramCache]: Analyzing trace with hash -541316470, now seen corresponding path program 440 times [2020-01-16 18:08:49,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:49,432 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650977046] [2020-01-16 18:08:49,432 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:49,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:49,946 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 18:08:49,946 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650977046] [2020-01-16 18:08:49,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:49,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:49,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790719925] [2020-01-16 18:08:49,947 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:49,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:49,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:49,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:49,947 INFO L87 Difference]: Start difference. First operand 1573 states and 7046 transitions. Second operand 11 states. [2020-01-16 18:08:50,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:50,121 INFO L93 Difference]: Finished difference Result 2914 states and 11626 transitions. [2020-01-16 18:08:50,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:50,121 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:50,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:50,129 INFO L225 Difference]: With dead ends: 2914 [2020-01-16 18:08:50,130 INFO L226 Difference]: Without dead ends: 2891 [2020-01-16 18:08:50,130 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:08:50,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2891 states. [2020-01-16 18:08:50,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2891 to 1568. [2020-01-16 18:08:50,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 18:08:50,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7032 transitions. [2020-01-16 18:08:50,202 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7032 transitions. Word has length 28 [2020-01-16 18:08:50,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:50,202 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7032 transitions. [2020-01-16 18:08:50,202 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:50,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7032 transitions. [2020-01-16 18:08:50,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:50,204 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:50,204 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 18:08:50,204 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 18:08:50,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:50,205 INFO L82 PathProgramCache]: Analyzing trace with hash 984313530, now seen corresponding path program 441 times [2020-01-16 18:08:50,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:50,205 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146590255] [2020-01-16 18:08:50,205 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:50,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:50,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:08:50,736 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146590255] [2020-01-16 18:08:50,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:50,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:50,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612826186] [2020-01-16 18:08:50,736 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:50,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:50,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:50,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:50,737 INFO L87 Difference]: Start difference. First operand 1568 states and 7032 transitions. Second operand 11 states. [2020-01-16 18:08:50,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:50,928 INFO L93 Difference]: Finished difference Result 2910 states and 11618 transitions. [2020-01-16 18:08:50,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:50,928 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:50,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:50,936 INFO L225 Difference]: With dead ends: 2910 [2020-01-16 18:08:50,936 INFO L226 Difference]: Without dead ends: 2895 [2020-01-16 18:08:50,936 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:08:50,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2895 states. [2020-01-16 18:08:50,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2895 to 1573. [2020-01-16 18:08:50,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:08:51,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7041 transitions. [2020-01-16 18:08:51,002 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7041 transitions. Word has length 28 [2020-01-16 18:08:51,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:51,003 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7041 transitions. [2020-01-16 18:08:51,003 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:51,003 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7041 transitions. [2020-01-16 18:08:51,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:51,005 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:51,005 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 18:08:51,005 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 18:08:51,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:51,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1648001078, now seen corresponding path program 442 times [2020-01-16 18:08:51,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:51,006 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688794125] [2020-01-16 18:08:51,006 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:51,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:51,524 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 18:08:51,525 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688794125] [2020-01-16 18:08:51,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:51,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:51,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016757871] [2020-01-16 18:08:51,525 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:51,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:51,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:51,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:51,526 INFO L87 Difference]: Start difference. First operand 1573 states and 7041 transitions. Second operand 11 states. [2020-01-16 18:08:51,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:51,705 INFO L93 Difference]: Finished difference Result 2912 states and 11617 transitions. [2020-01-16 18:08:51,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:51,706 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:51,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:51,713 INFO L225 Difference]: With dead ends: 2912 [2020-01-16 18:08:51,713 INFO L226 Difference]: Without dead ends: 2890 [2020-01-16 18:08:51,713 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 18:08:51,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2890 states. [2020-01-16 18:08:51,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2890 to 1568. [2020-01-16 18:08:51,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 18:08:51,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7027 transitions. [2020-01-16 18:08:51,781 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7027 transitions. Word has length 28 [2020-01-16 18:08:51,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:51,781 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7027 transitions. [2020-01-16 18:08:51,781 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:51,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7027 transitions. [2020-01-16 18:08:51,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:51,783 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:51,784 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 18:08:51,784 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 18:08:51,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:51,784 INFO L82 PathProgramCache]: Analyzing trace with hash -538690694, now seen corresponding path program 443 times [2020-01-16 18:08:51,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:51,784 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666806788] [2020-01-16 18:08:51,784 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:51,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:52,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:08:52,310 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666806788] [2020-01-16 18:08:52,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:52,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:52,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607760269] [2020-01-16 18:08:52,311 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:52,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:52,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:52,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:52,311 INFO L87 Difference]: Start difference. First operand 1568 states and 7027 transitions. Second operand 11 states. [2020-01-16 18:08:52,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:52,488 INFO L93 Difference]: Finished difference Result 2918 states and 11631 transitions. [2020-01-16 18:08:52,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:52,489 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:52,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:52,496 INFO L225 Difference]: With dead ends: 2918 [2020-01-16 18:08:52,497 INFO L226 Difference]: Without dead ends: 2900 [2020-01-16 18:08:52,497 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 18:08:52,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2900 states. [2020-01-16 18:08:52,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2900 to 1575. [2020-01-16 18:08:52,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:08:52,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7040 transitions. [2020-01-16 18:08:52,563 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7040 transitions. Word has length 28 [2020-01-16 18:08:52,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:52,563 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7040 transitions. [2020-01-16 18:08:52,563 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:52,563 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7040 transitions. [2020-01-16 18:08:52,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:52,565 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:52,565 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:08:52,565 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 18:08:52,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:52,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1110145500, now seen corresponding path program 444 times [2020-01-16 18:08:52,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:52,566 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977864218] [2020-01-16 18:08:52,566 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:52,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:53,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:08:53,090 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977864218] [2020-01-16 18:08:53,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:53,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:53,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017438054] [2020-01-16 18:08:53,091 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:53,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:53,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:53,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:53,091 INFO L87 Difference]: Start difference. First operand 1575 states and 7040 transitions. Second operand 11 states. [2020-01-16 18:08:53,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:53,273 INFO L93 Difference]: Finished difference Result 2917 states and 11622 transitions. [2020-01-16 18:08:53,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:53,273 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:53,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:53,280 INFO L225 Difference]: With dead ends: 2917 [2020-01-16 18:08:53,280 INFO L226 Difference]: Without dead ends: 2888 [2020-01-16 18:08:53,280 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 18:08:53,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2888 states. [2020-01-16 18:08:53,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2888 to 1563. [2020-01-16 18:08:53,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 18:08:53,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7014 transitions. [2020-01-16 18:08:53,346 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7014 transitions. Word has length 28 [2020-01-16 18:08:53,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:53,347 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7014 transitions. [2020-01-16 18:08:53,347 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:53,347 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7014 transitions. [2020-01-16 18:08:53,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:53,349 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:53,349 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:08:53,349 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 18:08:53,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:53,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1551052644, now seen corresponding path program 445 times [2020-01-16 18:08:53,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:53,349 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250475709] [2020-01-16 18:08:53,350 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:53,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:53,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:08:53,868 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250475709] [2020-01-16 18:08:53,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:53,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:53,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629977687] [2020-01-16 18:08:53,868 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:53,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:53,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:53,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:53,869 INFO L87 Difference]: Start difference. First operand 1563 states and 7014 transitions. Second operand 11 states. [2020-01-16 18:08:54,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:54,073 INFO L93 Difference]: Finished difference Result 2897 states and 11586 transitions. [2020-01-16 18:08:54,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:54,073 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:54,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:54,081 INFO L225 Difference]: With dead ends: 2897 [2020-01-16 18:08:54,081 INFO L226 Difference]: Without dead ends: 2882 [2020-01-16 18:08:54,082 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 18:08:54,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2882 states. [2020-01-16 18:08:54,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2882 to 1571. [2020-01-16 18:08:54,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:08:54,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7036 transitions. [2020-01-16 18:08:54,149 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7036 transitions. Word has length 28 [2020-01-16 18:08:54,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:54,150 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7036 transitions. [2020-01-16 18:08:54,150 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:54,150 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7036 transitions. [2020-01-16 18:08:54,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:54,152 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:54,152 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 18:08:54,152 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 18:08:54,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:54,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1724300336, now seen corresponding path program 446 times [2020-01-16 18:08:54,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:54,153 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944677405] [2020-01-16 18:08:54,153 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:54,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:54,674 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 18:08:54,675 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944677405] [2020-01-16 18:08:54,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:54,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:54,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364876487] [2020-01-16 18:08:54,675 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:54,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:54,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:54,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:54,676 INFO L87 Difference]: Start difference. First operand 1571 states and 7036 transitions. Second operand 11 states. [2020-01-16 18:08:54,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:54,881 INFO L93 Difference]: Finished difference Result 2896 states and 11580 transitions. [2020-01-16 18:08:54,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:54,881 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:54,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:54,888 INFO L225 Difference]: With dead ends: 2896 [2020-01-16 18:08:54,889 INFO L226 Difference]: Without dead ends: 2878 [2020-01-16 18:08:54,889 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:08:54,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2878 states. [2020-01-16 18:08:54,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2878 to 1567. [2020-01-16 18:08:54,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:08:54,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7025 transitions. [2020-01-16 18:08:54,956 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7025 transitions. Word has length 28 [2020-01-16 18:08:54,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:54,956 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7025 transitions. [2020-01-16 18:08:54,956 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:54,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7025 transitions. [2020-01-16 18:08:54,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:54,958 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:54,958 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 18:08:54,958 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 18:08:54,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:54,959 INFO L82 PathProgramCache]: Analyzing trace with hash 477967264, now seen corresponding path program 447 times [2020-01-16 18:08:54,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:54,959 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620497699] [2020-01-16 18:08:54,959 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:54,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:55,476 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 18:08:55,476 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620497699] [2020-01-16 18:08:55,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:55,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:55,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621359624] [2020-01-16 18:08:55,476 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:55,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:55,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:55,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:55,477 INFO L87 Difference]: Start difference. First operand 1567 states and 7025 transitions. Second operand 11 states. [2020-01-16 18:08:55,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:55,696 INFO L93 Difference]: Finished difference Result 2901 states and 11591 transitions. [2020-01-16 18:08:55,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:55,697 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:55,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:55,704 INFO L225 Difference]: With dead ends: 2901 [2020-01-16 18:08:55,705 INFO L226 Difference]: Without dead ends: 2886 [2020-01-16 18:08:55,705 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:08:55,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2886 states. [2020-01-16 18:08:55,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2886 to 1572. [2020-01-16 18:08:55,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:08:55,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7034 transitions. [2020-01-16 18:08:55,771 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7034 transitions. Word has length 28 [2020-01-16 18:08:55,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:55,771 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7034 transitions. [2020-01-16 18:08:55,771 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:55,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7034 transitions. [2020-01-16 18:08:55,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:55,773 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:55,773 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 18:08:55,774 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 18:08:55,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:55,774 INFO L82 PathProgramCache]: Analyzing trace with hash 2140619952, now seen corresponding path program 448 times [2020-01-16 18:08:55,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:55,774 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047434789] [2020-01-16 18:08:55,774 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:55,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:56,291 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 18:08:56,291 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047434789] [2020-01-16 18:08:56,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:56,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:56,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864128654] [2020-01-16 18:08:56,292 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:56,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:56,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:56,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:56,292 INFO L87 Difference]: Start difference. First operand 1572 states and 7034 transitions. Second operand 11 states. [2020-01-16 18:08:56,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:56,481 INFO L93 Difference]: Finished difference Result 2903 states and 11590 transitions. [2020-01-16 18:08:56,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:56,481 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:56,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:56,488 INFO L225 Difference]: With dead ends: 2903 [2020-01-16 18:08:56,489 INFO L226 Difference]: Without dead ends: 2881 [2020-01-16 18:08:56,489 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:08:56,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2881 states. [2020-01-16 18:08:56,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2881 to 1567. [2020-01-16 18:08:56,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:08:56,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7021 transitions. [2020-01-16 18:08:56,576 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7021 transitions. Word has length 28 [2020-01-16 18:08:56,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:56,576 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7021 transitions. [2020-01-16 18:08:56,576 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:56,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7021 transitions. [2020-01-16 18:08:56,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:56,579 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:56,579 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 18:08:56,579 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 18:08:56,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:56,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1726926112, now seen corresponding path program 449 times [2020-01-16 18:08:56,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:56,579 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609604873] [2020-01-16 18:08:56,579 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:56,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:57,086 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 18:08:57,087 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609604873] [2020-01-16 18:08:57,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:57,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:57,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074375470] [2020-01-16 18:08:57,087 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:57,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:57,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:57,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:57,088 INFO L87 Difference]: Start difference. First operand 1567 states and 7021 transitions. Second operand 11 states. [2020-01-16 18:08:57,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:57,292 INFO L93 Difference]: Finished difference Result 2898 states and 11580 transitions. [2020-01-16 18:08:57,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:57,292 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:57,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:57,300 INFO L225 Difference]: With dead ends: 2898 [2020-01-16 18:08:57,300 INFO L226 Difference]: Without dead ends: 2884 [2020-01-16 18:08:57,300 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 18:08:57,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2884 states. [2020-01-16 18:08:57,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2884 to 1571. [2020-01-16 18:08:57,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:08:57,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7028 transitions. [2020-01-16 18:08:57,366 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7028 transitions. Word has length 28 [2020-01-16 18:08:57,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:57,367 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7028 transitions. [2020-01-16 18:08:57,367 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:57,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7028 transitions. [2020-01-16 18:08:57,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:57,369 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:57,369 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:08:57,369 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 18:08:57,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:57,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1078636188, now seen corresponding path program 450 times [2020-01-16 18:08:57,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:57,369 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853085397] [2020-01-16 18:08:57,369 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:57,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:57,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:08:57,879 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853085397] [2020-01-16 18:08:57,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:57,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:57,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950231551] [2020-01-16 18:08:57,880 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:57,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:57,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:57,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:57,880 INFO L87 Difference]: Start difference. First operand 1571 states and 7028 transitions. Second operand 11 states. [2020-01-16 18:08:58,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:58,087 INFO L93 Difference]: Finished difference Result 2901 states and 11582 transitions. [2020-01-16 18:08:58,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:58,088 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:58,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:58,094 INFO L225 Difference]: With dead ends: 2901 [2020-01-16 18:08:58,095 INFO L226 Difference]: Without dead ends: 2876 [2020-01-16 18:08:58,095 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:08:58,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2876 states. [2020-01-16 18:08:58,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2876 to 1563. [2020-01-16 18:08:58,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 18:08:58,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7010 transitions. [2020-01-16 18:08:58,161 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7010 transitions. Word has length 28 [2020-01-16 18:08:58,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:58,161 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7010 transitions. [2020-01-16 18:08:58,161 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:58,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7010 transitions. [2020-01-16 18:08:58,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:58,164 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:58,164 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:08:58,164 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 18:08:58,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:58,164 INFO L82 PathProgramCache]: Analyzing trace with hash -478297846, now seen corresponding path program 451 times [2020-01-16 18:08:58,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:58,164 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517270161] [2020-01-16 18:08:58,164 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:58,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:58,680 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 18:08:58,681 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517270161] [2020-01-16 18:08:58,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:58,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:58,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329612169] [2020-01-16 18:08:58,681 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:58,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:58,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:58,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:58,682 INFO L87 Difference]: Start difference. First operand 1563 states and 7010 transitions. Second operand 11 states. [2020-01-16 18:08:58,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:58,919 INFO L93 Difference]: Finished difference Result 2908 states and 11606 transitions. [2020-01-16 18:08:58,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:58,919 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:58,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:58,929 INFO L225 Difference]: With dead ends: 2908 [2020-01-16 18:08:58,930 INFO L226 Difference]: Without dead ends: 2890 [2020-01-16 18:08:58,930 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:08:59,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2890 states. [2020-01-16 18:08:59,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2890 to 1571. [2020-01-16 18:08:59,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:08:59,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7032 transitions. [2020-01-16 18:08:59,041 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7032 transitions. Word has length 28 [2020-01-16 18:08:59,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:59,041 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7032 transitions. [2020-01-16 18:08:59,041 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:59,041 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7032 transitions. [2020-01-16 18:08:59,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:59,043 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:59,043 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 18:08:59,043 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 18:08:59,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:59,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1755809648, now seen corresponding path program 452 times [2020-01-16 18:08:59,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:59,044 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713810927] [2020-01-16 18:08:59,044 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:59,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:08:59,551 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 18:08:59,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:08:59,558 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713810927] [2020-01-16 18:08:59,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:08:59,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:08:59,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934445776] [2020-01-16 18:08:59,559 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:08:59,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:08:59,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:08:59,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:08:59,559 INFO L87 Difference]: Start difference. First operand 1571 states and 7032 transitions. Second operand 11 states. [2020-01-16 18:08:59,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:08:59,737 INFO L93 Difference]: Finished difference Result 2904 states and 11594 transitions. [2020-01-16 18:08:59,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:08:59,738 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:08:59,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:08:59,745 INFO L225 Difference]: With dead ends: 2904 [2020-01-16 18:08:59,745 INFO L226 Difference]: Without dead ends: 2886 [2020-01-16 18:08:59,746 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 18:08:59,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2886 states. [2020-01-16 18:08:59,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2886 to 1567. [2020-01-16 18:08:59,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:08:59,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7021 transitions. [2020-01-16 18:08:59,812 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7021 transitions. Word has length 28 [2020-01-16 18:08:59,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:08:59,812 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7021 transitions. [2020-01-16 18:08:59,812 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:08:59,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7021 transitions. [2020-01-16 18:08:59,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:08:59,814 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:08:59,814 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:08:59,814 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 18:08:59,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:08:59,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1551383226, now seen corresponding path program 453 times [2020-01-16 18:08:59,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:08:59,815 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186432607] [2020-01-16 18:08:59,815 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:08:59,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:00,343 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 18:09:00,343 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186432607] [2020-01-16 18:09:00,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:00,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:00,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036145146] [2020-01-16 18:09:00,344 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:00,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:00,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:00,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:00,344 INFO L87 Difference]: Start difference. First operand 1567 states and 7021 transitions. Second operand 11 states. [2020-01-16 18:09:00,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:00,554 INFO L93 Difference]: Finished difference Result 2914 states and 11617 transitions. [2020-01-16 18:09:00,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:00,555 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:00,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:00,562 INFO L225 Difference]: With dead ends: 2914 [2020-01-16 18:09:00,562 INFO L226 Difference]: Without dead ends: 2896 [2020-01-16 18:09:00,562 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:09:00,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2896 states. [2020-01-16 18:09:00,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2896 to 1574. [2020-01-16 18:09:00,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:09:00,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7034 transitions. [2020-01-16 18:09:00,628 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7034 transitions. Word has length 28 [2020-01-16 18:09:00,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:00,628 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7034 transitions. [2020-01-16 18:09:00,628 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:00,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7034 transitions. [2020-01-16 18:09:00,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:00,631 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:00,631 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:09:00,631 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 18:09:00,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:00,631 INFO L82 PathProgramCache]: Analyzing trace with hash -2122838032, now seen corresponding path program 454 times [2020-01-16 18:09:00,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:00,631 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511390153] [2020-01-16 18:09:00,631 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:00,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:01,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:09:01,155 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511390153] [2020-01-16 18:09:01,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:01,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:01,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535468270] [2020-01-16 18:09:01,155 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:01,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:01,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:01,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:01,156 INFO L87 Difference]: Start difference. First operand 1574 states and 7034 transitions. Second operand 11 states. [2020-01-16 18:09:01,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:01,352 INFO L93 Difference]: Finished difference Result 2913 states and 11608 transitions. [2020-01-16 18:09:01,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:01,353 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:01,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:01,360 INFO L225 Difference]: With dead ends: 2913 [2020-01-16 18:09:01,360 INFO L226 Difference]: Without dead ends: 2889 [2020-01-16 18:09:01,360 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:09:01,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2889 states. [2020-01-16 18:09:01,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2889 to 1567. [2020-01-16 18:09:01,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:09:01,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7017 transitions. [2020-01-16 18:09:01,426 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7017 transitions. Word has length 28 [2020-01-16 18:09:01,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:01,426 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7017 transitions. [2020-01-16 18:09:01,426 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:01,427 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7017 transitions. [2020-01-16 18:09:01,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:01,429 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:01,429 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:09:01,429 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 18:09:01,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:01,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1220579846, now seen corresponding path program 455 times [2020-01-16 18:09:01,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:01,429 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880325927] [2020-01-16 18:09:01,429 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:01,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:01,950 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 18:09:01,950 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880325927] [2020-01-16 18:09:01,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:01,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:01,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979075191] [2020-01-16 18:09:01,951 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:01,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:01,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:01,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:01,951 INFO L87 Difference]: Start difference. First operand 1567 states and 7017 transitions. Second operand 11 states. [2020-01-16 18:09:02,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:02,180 INFO L93 Difference]: Finished difference Result 2903 states and 11588 transitions. [2020-01-16 18:09:02,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:02,181 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:02,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:02,188 INFO L225 Difference]: With dead ends: 2903 [2020-01-16 18:09:02,188 INFO L226 Difference]: Without dead ends: 2889 [2020-01-16 18:09:02,188 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:09:02,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2889 states. [2020-01-16 18:09:02,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2889 to 1571. [2020-01-16 18:09:02,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:09:02,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7024 transitions. [2020-01-16 18:09:02,254 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7024 transitions. Word has length 28 [2020-01-16 18:09:02,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:02,254 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7024 transitions. [2020-01-16 18:09:02,254 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:02,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7024 transitions. [2020-01-16 18:09:02,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:02,257 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:02,257 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:09:02,257 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 18:09:02,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:02,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1584982454, now seen corresponding path program 456 times [2020-01-16 18:09:02,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:02,257 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281828059] [2020-01-16 18:09:02,257 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:02,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:02,796 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 18:09:02,796 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281828059] [2020-01-16 18:09:02,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:02,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:02,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368574798] [2020-01-16 18:09:02,797 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:02,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:02,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:02,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:02,797 INFO L87 Difference]: Start difference. First operand 1571 states and 7024 transitions. Second operand 11 states. [2020-01-16 18:09:03,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:03,012 INFO L93 Difference]: Finished difference Result 2906 states and 11590 transitions. [2020-01-16 18:09:03,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:03,013 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:03,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:03,020 INFO L225 Difference]: With dead ends: 2906 [2020-01-16 18:09:03,021 INFO L226 Difference]: Without dead ends: 2877 [2020-01-16 18:09:03,021 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:09:03,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2877 states. [2020-01-16 18:09:03,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2877 to 1559. [2020-01-16 18:09:03,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1559 states. [2020-01-16 18:09:03,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 6999 transitions. [2020-01-16 18:09:03,087 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 6999 transitions. Word has length 28 [2020-01-16 18:09:03,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:03,087 INFO L478 AbstractCegarLoop]: Abstraction has 1559 states and 6999 transitions. [2020-01-16 18:09:03,087 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:03,087 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 6999 transitions. [2020-01-16 18:09:03,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:03,089 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:03,089 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 18:09:03,089 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 18:09:03,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:03,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1188275872, now seen corresponding path program 457 times [2020-01-16 18:09:03,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:03,090 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528717034] [2020-01-16 18:09:03,090 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:03,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:03,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:09:03,600 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528717034] [2020-01-16 18:09:03,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:03,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:03,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137295545] [2020-01-16 18:09:03,600 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:03,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:03,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:03,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:03,601 INFO L87 Difference]: Start difference. First operand 1559 states and 6999 transitions. Second operand 11 states. [2020-01-16 18:09:03,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:03,805 INFO L93 Difference]: Finished difference Result 2912 states and 11627 transitions. [2020-01-16 18:09:03,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:03,806 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:03,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:03,813 INFO L225 Difference]: With dead ends: 2912 [2020-01-16 18:09:03,813 INFO L226 Difference]: Without dead ends: 2896 [2020-01-16 18:09:03,813 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:09:03,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2896 states. [2020-01-16 18:09:03,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2896 to 1573. [2020-01-16 18:09:03,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:09:03,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7044 transitions. [2020-01-16 18:09:03,880 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7044 transitions. Word has length 28 [2020-01-16 18:09:03,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:03,880 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7044 transitions. [2020-01-16 18:09:03,880 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:03,880 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7044 transitions. [2020-01-16 18:09:03,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:03,882 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:03,882 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:09:03,882 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 18:09:03,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:03,883 INFO L82 PathProgramCache]: Analyzing trace with hash 301129124, now seen corresponding path program 458 times [2020-01-16 18:09:03,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:03,883 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729214690] [2020-01-16 18:09:03,883 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:03,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:04,392 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 18:09:04,392 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729214690] [2020-01-16 18:09:04,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:04,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:04,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351935535] [2020-01-16 18:09:04,393 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:04,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:04,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:04,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:04,393 INFO L87 Difference]: Start difference. First operand 1573 states and 7044 transitions. Second operand 11 states. [2020-01-16 18:09:04,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:04,576 INFO L93 Difference]: Finished difference Result 2914 states and 11625 transitions. [2020-01-16 18:09:04,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:04,577 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:04,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:04,583 INFO L225 Difference]: With dead ends: 2914 [2020-01-16 18:09:04,583 INFO L226 Difference]: Without dead ends: 2890 [2020-01-16 18:09:04,583 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:09:04,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2890 states. [2020-01-16 18:09:04,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2890 to 1567. [2020-01-16 18:09:04,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:09:04,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7029 transitions. [2020-01-16 18:09:04,650 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7029 transitions. Word has length 28 [2020-01-16 18:09:04,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:04,650 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7029 transitions. [2020-01-16 18:09:04,650 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:04,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7029 transitions. [2020-01-16 18:09:04,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:04,652 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:04,653 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 18:09:04,653 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 18:09:04,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:04,653 INFO L82 PathProgramCache]: Analyzing trace with hash -650420294, now seen corresponding path program 459 times [2020-01-16 18:09:04,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:04,653 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094468444] [2020-01-16 18:09:04,653 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:04,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:05,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:09:05,170 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094468444] [2020-01-16 18:09:05,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:05,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:05,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035160212] [2020-01-16 18:09:05,170 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:05,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:05,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:05,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:05,171 INFO L87 Difference]: Start difference. First operand 1567 states and 7029 transitions. Second operand 11 states. [2020-01-16 18:09:05,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:05,381 INFO L93 Difference]: Finished difference Result 2906 states and 11609 transitions. [2020-01-16 18:09:05,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:05,382 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:05,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:05,389 INFO L225 Difference]: With dead ends: 2906 [2020-01-16 18:09:05,389 INFO L226 Difference]: Without dead ends: 2890 [2020-01-16 18:09:05,389 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:09:05,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2890 states. [2020-01-16 18:09:05,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2890 to 1571. [2020-01-16 18:09:05,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:09:05,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7036 transitions. [2020-01-16 18:09:05,459 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7036 transitions. Word has length 28 [2020-01-16 18:09:05,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:05,459 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7036 transitions. [2020-01-16 18:09:05,459 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:05,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7036 transitions. [2020-01-16 18:09:05,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:05,462 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:05,462 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:09:05,462 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 18:09:05,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:05,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1221875100, now seen corresponding path program 460 times [2020-01-16 18:09:05,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:05,462 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644405836] [2020-01-16 18:09:05,462 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:05,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:05,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:09:05,986 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644405836] [2020-01-16 18:09:05,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:05,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:05,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704849505] [2020-01-16 18:09:05,986 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:05,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:05,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:05,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:05,987 INFO L87 Difference]: Start difference. First operand 1571 states and 7036 transitions. Second operand 11 states. [2020-01-16 18:09:06,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:06,215 INFO L93 Difference]: Finished difference Result 2904 states and 11601 transitions. [2020-01-16 18:09:06,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:06,215 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:06,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:06,222 INFO L225 Difference]: With dead ends: 2904 [2020-01-16 18:09:06,222 INFO L226 Difference]: Without dead ends: 2886 [2020-01-16 18:09:06,222 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:09:06,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2886 states. [2020-01-16 18:09:06,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2886 to 1567. [2020-01-16 18:09:06,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:09:06,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7025 transitions. [2020-01-16 18:09:06,289 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7025 transitions. Word has length 28 [2020-01-16 18:09:06,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:06,289 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7025 transitions. [2020-01-16 18:09:06,289 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:06,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7025 transitions. [2020-01-16 18:09:06,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:06,291 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:06,291 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 18:09:06,291 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 18:09:06,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:06,292 INFO L82 PathProgramCache]: Analyzing trace with hash -234100678, now seen corresponding path program 461 times [2020-01-16 18:09:06,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:06,292 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859894886] [2020-01-16 18:09:06,292 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:06,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:06,799 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:09:06,806 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 18:09:06,807 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859894886] [2020-01-16 18:09:06,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:06,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:06,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459948148] [2020-01-16 18:09:06,807 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:06,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:06,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:06,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:06,808 INFO L87 Difference]: Start difference. First operand 1567 states and 7025 transitions. Second operand 11 states. [2020-01-16 18:09:07,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:07,006 INFO L93 Difference]: Finished difference Result 2910 states and 11613 transitions. [2020-01-16 18:09:07,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:07,007 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:07,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:07,014 INFO L225 Difference]: With dead ends: 2910 [2020-01-16 18:09:07,014 INFO L226 Difference]: Without dead ends: 2892 [2020-01-16 18:09:07,014 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 18:09:07,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2892 states. [2020-01-16 18:09:07,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2892 to 1571. [2020-01-16 18:09:07,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:09:07,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7032 transitions. [2020-01-16 18:09:07,080 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7032 transitions. Word has length 28 [2020-01-16 18:09:07,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:07,080 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7032 transitions. [2020-01-16 18:09:07,080 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:07,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7032 transitions. [2020-01-16 18:09:07,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:07,083 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:07,083 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 18:09:07,083 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 18:09:07,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:07,083 INFO L82 PathProgramCache]: Analyzing trace with hash 2000006816, now seen corresponding path program 462 times [2020-01-16 18:09:07,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:07,083 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931855818] [2020-01-16 18:09:07,083 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:07,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:07,610 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 18:09:07,610 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931855818] [2020-01-16 18:09:07,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:07,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:07,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672479644] [2020-01-16 18:09:07,611 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:07,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:07,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:07,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:07,611 INFO L87 Difference]: Start difference. First operand 1571 states and 7032 transitions. Second operand 11 states. [2020-01-16 18:09:07,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:07,811 INFO L93 Difference]: Finished difference Result 2906 states and 11601 transitions. [2020-01-16 18:09:07,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:07,811 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:07,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:07,818 INFO L225 Difference]: With dead ends: 2906 [2020-01-16 18:09:07,818 INFO L226 Difference]: Without dead ends: 2884 [2020-01-16 18:09:07,818 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:09:07,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2884 states. [2020-01-16 18:09:07,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2884 to 1563. [2020-01-16 18:09:07,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 18:09:07,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7014 transitions. [2020-01-16 18:09:07,884 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7014 transitions. Word has length 28 [2020-01-16 18:09:07,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:07,884 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7014 transitions. [2020-01-16 18:09:07,884 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:07,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7014 transitions. [2020-01-16 18:09:07,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:07,887 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:07,887 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 18:09:07,887 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 18:09:07,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:07,887 INFO L82 PathProgramCache]: Analyzing trace with hash -94184284, now seen corresponding path program 463 times [2020-01-16 18:09:07,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:07,887 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070704147] [2020-01-16 18:09:07,887 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:07,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:08,427 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:09:08,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:09:08,434 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070704147] [2020-01-16 18:09:08,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:08,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:08,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71529158] [2020-01-16 18:09:08,434 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:08,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:08,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:08,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:08,435 INFO L87 Difference]: Start difference. First operand 1563 states and 7014 transitions. Second operand 11 states. [2020-01-16 18:09:08,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:08,646 INFO L93 Difference]: Finished difference Result 2922 states and 11652 transitions. [2020-01-16 18:09:08,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:08,647 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:08,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:08,653 INFO L225 Difference]: With dead ends: 2922 [2020-01-16 18:09:08,653 INFO L226 Difference]: Without dead ends: 2906 [2020-01-16 18:09:08,653 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 18:09:08,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2906 states. [2020-01-16 18:09:08,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2906 to 1575. [2020-01-16 18:09:08,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:09:08,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7048 transitions. [2020-01-16 18:09:08,720 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7048 transitions. Word has length 28 [2020-01-16 18:09:08,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:08,720 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7048 transitions. [2020-01-16 18:09:08,720 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:08,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7048 transitions. [2020-01-16 18:09:08,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:08,722 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:08,722 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:09:08,723 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 18:09:08,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:08,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1395220712, now seen corresponding path program 464 times [2020-01-16 18:09:08,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:08,723 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048140971] [2020-01-16 18:09:08,723 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:08,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:09,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:09:09,248 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048140971] [2020-01-16 18:09:09,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:09,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:09,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203172661] [2020-01-16 18:09:09,249 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:09,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:09,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:09,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:09,249 INFO L87 Difference]: Start difference. First operand 1575 states and 7048 transitions. Second operand 11 states. [2020-01-16 18:09:09,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:09,464 INFO L93 Difference]: Finished difference Result 2924 states and 11650 transitions. [2020-01-16 18:09:09,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:09,465 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:09,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:09,472 INFO L225 Difference]: With dead ends: 2924 [2020-01-16 18:09:09,472 INFO L226 Difference]: Without dead ends: 2900 [2020-01-16 18:09:09,472 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 18:09:09,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2900 states. [2020-01-16 18:09:09,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2900 to 1569. [2020-01-16 18:09:09,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:09:09,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7031 transitions. [2020-01-16 18:09:09,539 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7031 transitions. Word has length 28 [2020-01-16 18:09:09,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:09,539 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7031 transitions. [2020-01-16 18:09:09,539 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:09,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7031 transitions. [2020-01-16 18:09:09,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:09,541 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:09,541 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 18:09:09,541 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 18:09:09,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:09,542 INFO L82 PathProgramCache]: Analyzing trace with hash -629414086, now seen corresponding path program 465 times [2020-01-16 18:09:09,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:09,542 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123695187] [2020-01-16 18:09:09,542 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:09,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:10,069 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 18:09:10,069 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123695187] [2020-01-16 18:09:10,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:10,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:10,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678999484] [2020-01-16 18:09:10,070 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:10,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:10,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:10,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:10,070 INFO L87 Difference]: Start difference. First operand 1569 states and 7031 transitions. Second operand 11 states. [2020-01-16 18:09:10,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:10,331 INFO L93 Difference]: Finished difference Result 2921 states and 11644 transitions. [2020-01-16 18:09:10,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:10,331 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:10,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:10,338 INFO L225 Difference]: With dead ends: 2921 [2020-01-16 18:09:10,338 INFO L226 Difference]: Without dead ends: 2905 [2020-01-16 18:09:10,338 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:09:10,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2905 states. [2020-01-16 18:09:10,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2905 to 1575. [2020-01-16 18:09:10,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:09:10,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7042 transitions. [2020-01-16 18:09:10,405 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7042 transitions. Word has length 28 [2020-01-16 18:09:10,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:10,405 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7042 transitions. [2020-01-16 18:09:10,405 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:10,405 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7042 transitions. [2020-01-16 18:09:10,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:10,407 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:10,407 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 18:09:10,407 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 18:09:10,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:10,408 INFO L82 PathProgramCache]: Analyzing trace with hash 288536104, now seen corresponding path program 466 times [2020-01-16 18:09:10,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:10,408 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103667649] [2020-01-16 18:09:10,408 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:10,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:10,935 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 18:09:10,936 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103667649] [2020-01-16 18:09:10,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:10,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:10,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555307640] [2020-01-16 18:09:10,936 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:10,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:10,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:10,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:10,936 INFO L87 Difference]: Start difference. First operand 1575 states and 7042 transitions. Second operand 11 states. [2020-01-16 18:09:11,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:11,149 INFO L93 Difference]: Finished difference Result 2922 states and 11640 transitions. [2020-01-16 18:09:11,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:11,149 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:11,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:11,155 INFO L225 Difference]: With dead ends: 2922 [2020-01-16 18:09:11,156 INFO L226 Difference]: Without dead ends: 2899 [2020-01-16 18:09:11,156 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:09:11,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-01-16 18:09:11,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1569. [2020-01-16 18:09:11,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:09:11,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7025 transitions. [2020-01-16 18:09:11,223 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7025 transitions. Word has length 28 [2020-01-16 18:09:11,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:11,223 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7025 transitions. [2020-01-16 18:09:11,223 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:11,223 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7025 transitions. [2020-01-16 18:09:11,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:11,225 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:11,225 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 18:09:11,225 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 18:09:11,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:11,226 INFO L82 PathProgramCache]: Analyzing trace with hash -213094470, now seen corresponding path program 467 times [2020-01-16 18:09:11,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:11,226 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968057978] [2020-01-16 18:09:11,226 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:11,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:11,764 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 18:09:11,764 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968057978] [2020-01-16 18:09:11,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:11,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:11,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657179923] [2020-01-16 18:09:11,765 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:11,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:11,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:11,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:11,765 INFO L87 Difference]: Start difference. First operand 1569 states and 7025 transitions. Second operand 11 states. [2020-01-16 18:09:12,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:12,030 INFO L93 Difference]: Finished difference Result 2926 states and 11649 transitions. [2020-01-16 18:09:12,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:12,030 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:12,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:12,038 INFO L225 Difference]: With dead ends: 2926 [2020-01-16 18:09:12,038 INFO L226 Difference]: Without dead ends: 2908 [2020-01-16 18:09:12,038 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 18:09:12,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2020-01-16 18:09:12,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 1576. [2020-01-16 18:09:12,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:09:12,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7038 transitions. [2020-01-16 18:09:12,105 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7038 transitions. Word has length 28 [2020-01-16 18:09:12,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:12,105 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7038 transitions. [2020-01-16 18:09:12,105 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:12,105 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7038 transitions. [2020-01-16 18:09:12,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:12,107 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:12,107 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 18:09:12,107 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 18:09:12,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:12,108 INFO L82 PathProgramCache]: Analyzing trace with hash -784549276, now seen corresponding path program 468 times [2020-01-16 18:09:12,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:12,108 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054978846] [2020-01-16 18:09:12,108 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:12,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:12,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:09:12,643 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054978846] [2020-01-16 18:09:12,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:12,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:12,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146695878] [2020-01-16 18:09:12,643 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:12,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:12,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:12,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:12,644 INFO L87 Difference]: Start difference. First operand 1576 states and 7038 transitions. Second operand 11 states. [2020-01-16 18:09:12,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:12,859 INFO L93 Difference]: Finished difference Result 2925 states and 11640 transitions. [2020-01-16 18:09:12,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:12,859 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:12,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:12,866 INFO L225 Difference]: With dead ends: 2925 [2020-01-16 18:09:12,866 INFO L226 Difference]: Without dead ends: 2895 [2020-01-16 18:09:12,866 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 18:09:12,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2895 states. [2020-01-16 18:09:12,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2895 to 1563. [2020-01-16 18:09:12,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 18:09:12,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7010 transitions. [2020-01-16 18:09:12,932 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7010 transitions. Word has length 28 [2020-01-16 18:09:12,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:12,932 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7010 transitions. [2020-01-16 18:09:12,932 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:12,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7010 transitions. [2020-01-16 18:09:12,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:12,935 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:12,935 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:09:12,935 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 18:09:12,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:12,935 INFO L82 PathProgramCache]: Analyzing trace with hash -62674972, now seen corresponding path program 469 times [2020-01-16 18:09:12,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:12,935 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737814544] [2020-01-16 18:09:12,935 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:12,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:13,448 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 18:09:13,448 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737814544] [2020-01-16 18:09:13,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:13,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:13,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052780185] [2020-01-16 18:09:13,449 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:13,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:13,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:13,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:13,449 INFO L87 Difference]: Start difference. First operand 1563 states and 7010 transitions. Second operand 11 states. [2020-01-16 18:09:13,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:13,659 INFO L93 Difference]: Finished difference Result 2905 states and 11603 transitions. [2020-01-16 18:09:13,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:13,659 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:13,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:13,666 INFO L225 Difference]: With dead ends: 2905 [2020-01-16 18:09:13,666 INFO L226 Difference]: Without dead ends: 2889 [2020-01-16 18:09:13,667 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 18:09:13,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2889 states. [2020-01-16 18:09:13,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2889 to 1571. [2020-01-16 18:09:13,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:09:13,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7032 transitions. [2020-01-16 18:09:13,733 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7032 transitions. Word has length 28 [2020-01-16 18:09:13,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:13,733 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7032 transitions. [2020-01-16 18:09:13,733 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:13,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7032 transitions. [2020-01-16 18:09:13,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:13,735 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:13,735 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 18:09:13,735 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 18:09:13,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:13,735 INFO L82 PathProgramCache]: Analyzing trace with hash -634129778, now seen corresponding path program 470 times [2020-01-16 18:09:13,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:13,736 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676391108] [2020-01-16 18:09:13,736 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:13,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:14,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:09:14,255 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676391108] [2020-01-16 18:09:14,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:14,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:14,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121184171] [2020-01-16 18:09:14,255 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:14,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:14,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:14,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:14,255 INFO L87 Difference]: Start difference. First operand 1571 states and 7032 transitions. Second operand 11 states. [2020-01-16 18:09:14,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:14,480 INFO L93 Difference]: Finished difference Result 2903 states and 11595 transitions. [2020-01-16 18:09:14,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:14,480 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:14,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:14,487 INFO L225 Difference]: With dead ends: 2903 [2020-01-16 18:09:14,487 INFO L226 Difference]: Without dead ends: 2885 [2020-01-16 18:09:14,488 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 18:09:14,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2885 states. [2020-01-16 18:09:14,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2885 to 1567. [2020-01-16 18:09:14,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:09:14,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7021 transitions. [2020-01-16 18:09:14,553 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7021 transitions. Word has length 28 [2020-01-16 18:09:14,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:14,554 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7021 transitions. [2020-01-16 18:09:14,554 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:14,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7021 transitions. [2020-01-16 18:09:14,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:14,556 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:14,556 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 18:09:14,556 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 18:09:14,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:14,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1135760352, now seen corresponding path program 471 times [2020-01-16 18:09:14,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:14,556 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601474837] [2020-01-16 18:09:14,556 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:14,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:15,073 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 18:09:15,073 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601474837] [2020-01-16 18:09:15,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:15,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:15,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851879807] [2020-01-16 18:09:15,073 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:15,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:15,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:15,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:15,074 INFO L87 Difference]: Start difference. First operand 1567 states and 7021 transitions. Second operand 11 states. [2020-01-16 18:09:15,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:15,268 INFO L93 Difference]: Finished difference Result 2910 states and 11611 transitions. [2020-01-16 18:09:15,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:15,269 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:15,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:15,276 INFO L225 Difference]: With dead ends: 2910 [2020-01-16 18:09:15,276 INFO L226 Difference]: Without dead ends: 2894 [2020-01-16 18:09:15,277 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 18:09:15,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2020-01-16 18:09:15,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 1573. [2020-01-16 18:09:15,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:09:15,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7032 transitions. [2020-01-16 18:09:15,343 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7032 transitions. Word has length 28 [2020-01-16 18:09:15,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:15,343 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7032 transitions. [2020-01-16 18:09:15,343 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:15,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7032 transitions. [2020-01-16 18:09:15,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:15,345 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:15,345 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 18:09:15,345 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 18:09:15,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:15,346 INFO L82 PathProgramCache]: Analyzing trace with hash -217810162, now seen corresponding path program 472 times [2020-01-16 18:09:15,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:15,346 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848159825] [2020-01-16 18:09:15,346 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:15,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:15,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:09:15,870 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848159825] [2020-01-16 18:09:15,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:15,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:15,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226248248] [2020-01-16 18:09:15,871 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:15,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:15,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:15,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:15,871 INFO L87 Difference]: Start difference. First operand 1573 states and 7032 transitions. Second operand 11 states. [2020-01-16 18:09:16,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:16,140 INFO L93 Difference]: Finished difference Result 2911 states and 11607 transitions. [2020-01-16 18:09:16,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:16,140 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:16,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:16,147 INFO L225 Difference]: With dead ends: 2911 [2020-01-16 18:09:16,148 INFO L226 Difference]: Without dead ends: 2888 [2020-01-16 18:09:16,148 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 18:09:16,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2888 states. [2020-01-16 18:09:16,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2888 to 1567. [2020-01-16 18:09:16,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:09:16,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7017 transitions. [2020-01-16 18:09:16,214 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7017 transitions. Word has length 28 [2020-01-16 18:09:16,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:16,214 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7017 transitions. [2020-01-16 18:09:16,214 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:16,214 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7017 transitions. [2020-01-16 18:09:16,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:16,216 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:16,216 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 18:09:16,217 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 18:09:16,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:16,217 INFO L82 PathProgramCache]: Analyzing trace with hash 2052522336, now seen corresponding path program 473 times [2020-01-16 18:09:16,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:16,217 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912481690] [2020-01-16 18:09:16,217 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:16,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:16,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:09:16,746 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912481690] [2020-01-16 18:09:16,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:16,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:16,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071700542] [2020-01-16 18:09:16,746 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:16,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:16,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:16,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:16,747 INFO L87 Difference]: Start difference. First operand 1567 states and 7017 transitions. Second operand 11 states. [2020-01-16 18:09:16,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:16,942 INFO L93 Difference]: Finished difference Result 2904 states and 11593 transitions. [2020-01-16 18:09:16,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:16,942 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:16,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:16,949 INFO L225 Difference]: With dead ends: 2904 [2020-01-16 18:09:16,949 INFO L226 Difference]: Without dead ends: 2890 [2020-01-16 18:09:16,950 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 18:09:16,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2890 states. [2020-01-16 18:09:17,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2890 to 1571. [2020-01-16 18:09:17,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:09:17,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7024 transitions. [2020-01-16 18:09:17,016 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7024 transitions. Word has length 28 [2020-01-16 18:09:17,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:17,016 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7024 transitions. [2020-01-16 18:09:17,016 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:17,016 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7024 transitions. [2020-01-16 18:09:17,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:17,018 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:17,018 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 18:09:17,018 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 18:09:17,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:17,019 INFO L82 PathProgramCache]: Analyzing trace with hash -753039964, now seen corresponding path program 474 times [2020-01-16 18:09:17,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:17,019 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342569255] [2020-01-16 18:09:17,019 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:17,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:17,546 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 18:09:17,547 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342569255] [2020-01-16 18:09:17,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:17,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:17,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942248034] [2020-01-16 18:09:17,547 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:17,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:17,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:17,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:17,548 INFO L87 Difference]: Start difference. First operand 1571 states and 7024 transitions. Second operand 11 states. [2020-01-16 18:09:17,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:17,814 INFO L93 Difference]: Finished difference Result 2907 states and 11595 transitions. [2020-01-16 18:09:17,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:17,815 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:17,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:17,822 INFO L225 Difference]: With dead ends: 2907 [2020-01-16 18:09:17,822 INFO L226 Difference]: Without dead ends: 2882 [2020-01-16 18:09:17,822 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 18:09:17,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2882 states. [2020-01-16 18:09:17,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2882 to 1563. [2020-01-16 18:09:17,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 18:09:17,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7006 transitions. [2020-01-16 18:09:17,888 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7006 transitions. Word has length 28 [2020-01-16 18:09:17,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:17,888 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7006 transitions. [2020-01-16 18:09:17,888 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:17,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7006 transitions. [2020-01-16 18:09:17,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:17,890 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:17,891 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:09:17,891 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 18:09:17,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:17,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1447736232, now seen corresponding path program 475 times [2020-01-16 18:09:17,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:17,891 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680118010] [2020-01-16 18:09:17,891 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:17,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:18,413 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 18:09:18,413 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680118010] [2020-01-16 18:09:18,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:18,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:18,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148589787] [2020-01-16 18:09:18,413 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:18,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:18,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:18,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:18,414 INFO L87 Difference]: Start difference. First operand 1563 states and 7006 transitions. Second operand 11 states. [2020-01-16 18:09:18,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:18,586 INFO L93 Difference]: Finished difference Result 2912 states and 11614 transitions. [2020-01-16 18:09:18,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:18,586 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:18,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:18,593 INFO L225 Difference]: With dead ends: 2912 [2020-01-16 18:09:18,593 INFO L226 Difference]: Without dead ends: 2894 [2020-01-16 18:09:18,593 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:09:18,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2020-01-16 18:09:18,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 1571. [2020-01-16 18:09:18,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:09:18,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7028 transitions. [2020-01-16 18:09:18,664 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7028 transitions. Word has length 28 [2020-01-16 18:09:18,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:18,665 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7028 transitions. [2020-01-16 18:09:18,665 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:18,665 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7028 transitions. [2020-01-16 18:09:18,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:18,667 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:18,667 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 18:09:18,667 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 18:09:18,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:18,668 INFO L82 PathProgramCache]: Analyzing trace with hash -613123570, now seen corresponding path program 476 times [2020-01-16 18:09:18,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:18,668 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043924459] [2020-01-16 18:09:18,668 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:18,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:19,186 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 18:09:19,192 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 18:09:19,193 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043924459] [2020-01-16 18:09:19,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:19,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:19,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295561214] [2020-01-16 18:09:19,193 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:19,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:19,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:19,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:19,194 INFO L87 Difference]: Start difference. First operand 1571 states and 7028 transitions. Second operand 11 states. [2020-01-16 18:09:19,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:19,363 INFO L93 Difference]: Finished difference Result 2908 states and 11602 transitions. [2020-01-16 18:09:19,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:19,364 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:19,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:19,371 INFO L225 Difference]: With dead ends: 2908 [2020-01-16 18:09:19,371 INFO L226 Difference]: Without dead ends: 2890 [2020-01-16 18:09:19,371 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:09:19,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2890 states. [2020-01-16 18:09:19,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2890 to 1567. [2020-01-16 18:09:19,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:09:19,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7017 transitions. [2020-01-16 18:09:19,437 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7017 transitions. Word has length 28 [2020-01-16 18:09:19,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:19,437 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7017 transitions. [2020-01-16 18:09:19,437 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:19,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7017 transitions. [2020-01-16 18:09:19,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:19,440 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:19,440 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 18:09:19,440 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 18:09:19,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:19,440 INFO L82 PathProgramCache]: Analyzing trace with hash 374650852, now seen corresponding path program 477 times [2020-01-16 18:09:19,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:19,440 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550345673] [2020-01-16 18:09:19,440 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:19,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:19,966 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 18:09:19,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:09:19,972 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550345673] [2020-01-16 18:09:19,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:19,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:19,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027587615] [2020-01-16 18:09:19,973 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:19,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:19,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:19,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:19,973 INFO L87 Difference]: Start difference. First operand 1567 states and 7017 transitions. Second operand 11 states. [2020-01-16 18:09:20,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:20,146 INFO L93 Difference]: Finished difference Result 2918 states and 11625 transitions. [2020-01-16 18:09:20,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:20,146 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:20,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:20,153 INFO L225 Difference]: With dead ends: 2918 [2020-01-16 18:09:20,154 INFO L226 Difference]: Without dead ends: 2900 [2020-01-16 18:09:20,154 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:09:20,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2900 states. [2020-01-16 18:09:20,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2900 to 1574. [2020-01-16 18:09:20,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:09:20,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7030 transitions. [2020-01-16 18:09:20,249 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7030 transitions. Word has length 28 [2020-01-16 18:09:20,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:20,249 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7030 transitions. [2020-01-16 18:09:20,249 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:20,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7030 transitions. [2020-01-16 18:09:20,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:20,251 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:20,252 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 18:09:20,252 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 18:09:20,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:20,252 INFO L82 PathProgramCache]: Analyzing trace with hash -196803954, now seen corresponding path program 478 times [2020-01-16 18:09:20,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:20,252 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098462763] [2020-01-16 18:09:20,252 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:20,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:20,778 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 18:09:20,778 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098462763] [2020-01-16 18:09:20,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:20,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:20,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080294492] [2020-01-16 18:09:20,779 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:20,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:20,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:20,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:20,779 INFO L87 Difference]: Start difference. First operand 1574 states and 7030 transitions. Second operand 11 states. [2020-01-16 18:09:20,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:20,952 INFO L93 Difference]: Finished difference Result 2917 states and 11616 transitions. [2020-01-16 18:09:20,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:20,953 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:20,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:20,960 INFO L225 Difference]: With dead ends: 2917 [2020-01-16 18:09:20,960 INFO L226 Difference]: Without dead ends: 2893 [2020-01-16 18:09:20,961 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:09:21,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2893 states. [2020-01-16 18:09:21,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2893 to 1567. [2020-01-16 18:09:21,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:09:21,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7013 transitions. [2020-01-16 18:09:21,029 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7013 transitions. Word has length 28 [2020-01-16 18:09:21,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:21,029 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7013 transitions. [2020-01-16 18:09:21,029 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:21,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7013 transitions. [2020-01-16 18:09:21,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:21,031 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:21,031 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:09:21,031 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 18:09:21,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:21,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1148353372, now seen corresponding path program 479 times [2020-01-16 18:09:21,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:21,032 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197568178] [2020-01-16 18:09:21,032 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:21,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:21,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:09:21,550 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197568178] [2020-01-16 18:09:21,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:21,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:21,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48374219] [2020-01-16 18:09:21,550 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:21,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:21,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:21,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:21,551 INFO L87 Difference]: Start difference. First operand 1567 states and 7013 transitions. Second operand 11 states. [2020-01-16 18:09:21,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:21,724 INFO L93 Difference]: Finished difference Result 2907 states and 11596 transitions. [2020-01-16 18:09:21,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:21,724 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:21,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:21,731 INFO L225 Difference]: With dead ends: 2907 [2020-01-16 18:09:21,731 INFO L226 Difference]: Without dead ends: 2893 [2020-01-16 18:09:21,731 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:09:21,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2893 states. [2020-01-16 18:09:21,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2893 to 1571. [2020-01-16 18:09:21,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:09:21,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7020 transitions. [2020-01-16 18:09:21,797 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7020 transitions. Word has length 28 [2020-01-16 18:09:21,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:21,798 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7020 transitions. [2020-01-16 18:09:21,798 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:21,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7020 transitions. [2020-01-16 18:09:21,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:21,800 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:21,800 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 18:09:21,800 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 18:09:21,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:21,800 INFO L82 PathProgramCache]: Analyzing trace with hash 341051624, now seen corresponding path program 480 times [2020-01-16 18:09:21,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:21,800 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156686003] [2020-01-16 18:09:21,801 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:21,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:22,323 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 18:09:22,323 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156686003] [2020-01-16 18:09:22,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:22,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:22,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855072419] [2020-01-16 18:09:22,324 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:22,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:22,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:22,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:22,324 INFO L87 Difference]: Start difference. First operand 1571 states and 7020 transitions. Second operand 11 states. [2020-01-16 18:09:22,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:22,518 INFO L93 Difference]: Finished difference Result 2910 states and 11598 transitions. [2020-01-16 18:09:22,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:22,518 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:22,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:22,526 INFO L225 Difference]: With dead ends: 2910 [2020-01-16 18:09:22,526 INFO L226 Difference]: Without dead ends: 2877 [2020-01-16 18:09:22,526 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 18:09:22,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2877 states. [2020-01-16 18:09:22,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2877 to 1555. [2020-01-16 18:09:22,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1555 states. [2020-01-16 18:09:22,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 6988 transitions. [2020-01-16 18:09:22,592 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 6988 transitions. Word has length 28 [2020-01-16 18:09:22,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:22,593 INFO L478 AbstractCegarLoop]: Abstraction has 1555 states and 6988 transitions. [2020-01-16 18:09:22,593 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:22,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 6988 transitions. [2020-01-16 18:09:22,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:22,596 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:22,596 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 18:09:22,596 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 18:09:22,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:22,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1827506600, now seen corresponding path program 481 times [2020-01-16 18:09:22,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:22,597 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417492079] [2020-01-16 18:09:22,597 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:22,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:23,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:09:23,121 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417492079] [2020-01-16 18:09:23,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:23,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:23,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135501255] [2020-01-16 18:09:23,121 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:23,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:23,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:23,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:23,122 INFO L87 Difference]: Start difference. First operand 1555 states and 6988 transitions. Second operand 11 states. [2020-01-16 18:09:23,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:23,302 INFO L93 Difference]: Finished difference Result 2973 states and 11790 transitions. [2020-01-16 18:09:23,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:23,303 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:23,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:23,310 INFO L225 Difference]: With dead ends: 2973 [2020-01-16 18:09:23,310 INFO L226 Difference]: Without dead ends: 2958 [2020-01-16 18:09:23,310 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 18:09:23,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2958 states. [2020-01-16 18:09:23,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2958 to 1581. [2020-01-16 18:09:23,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:09:23,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7084 transitions. [2020-01-16 18:09:23,377 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7084 transitions. Word has length 28 [2020-01-16 18:09:23,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:23,377 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7084 transitions. [2020-01-16 18:09:23,377 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:23,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7084 transitions. [2020-01-16 18:09:23,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:23,379 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:23,379 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 18:09:23,379 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 18:09:23,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:23,379 INFO L82 PathProgramCache]: Analyzing trace with hash -978055700, now seen corresponding path program 482 times [2020-01-16 18:09:23,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:23,380 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403548806] [2020-01-16 18:09:23,380 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:23,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:23,908 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:09:23,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:09:23,914 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403548806] [2020-01-16 18:09:23,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:23,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:23,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935955860] [2020-01-16 18:09:23,915 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:23,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:23,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:23,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:23,915 INFO L87 Difference]: Start difference. First operand 1581 states and 7084 transitions. Second operand 11 states. [2020-01-16 18:09:24,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:24,056 INFO L93 Difference]: Finished difference Result 2978 states and 11794 transitions. [2020-01-16 18:09:24,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:24,057 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:24,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:24,064 INFO L225 Difference]: With dead ends: 2978 [2020-01-16 18:09:24,064 INFO L226 Difference]: Without dead ends: 2952 [2020-01-16 18:09:24,065 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 18:09:24,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2020-01-16 18:09:24,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 1575. [2020-01-16 18:09:24,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:09:24,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7067 transitions. [2020-01-16 18:09:24,131 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7067 transitions. Word has length 28 [2020-01-16 18:09:24,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:24,132 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7067 transitions. [2020-01-16 18:09:24,132 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:24,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7067 transitions. [2020-01-16 18:09:24,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:24,134 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:24,134 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 18:09:24,134 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 18:09:24,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:24,134 INFO L82 PathProgramCache]: Analyzing trace with hash -856519738, now seen corresponding path program 483 times [2020-01-16 18:09:24,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:24,135 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677461183] [2020-01-16 18:09:24,135 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:24,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:24,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:09:24,664 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677461183] [2020-01-16 18:09:24,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:24,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:24,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510315334] [2020-01-16 18:09:24,665 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:24,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:24,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:24,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:24,665 INFO L87 Difference]: Start difference. First operand 1575 states and 7067 transitions. Second operand 11 states. [2020-01-16 18:09:24,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:24,844 INFO L93 Difference]: Finished difference Result 2970 states and 11779 transitions. [2020-01-16 18:09:24,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:24,844 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:24,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:24,851 INFO L225 Difference]: With dead ends: 2970 [2020-01-16 18:09:24,851 INFO L226 Difference]: Without dead ends: 2955 [2020-01-16 18:09:24,852 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 18:09:24,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2955 states. [2020-01-16 18:09:24,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2955 to 1580. [2020-01-16 18:09:24,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:09:24,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7076 transitions. [2020-01-16 18:09:24,919 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7076 transitions. Word has length 28 [2020-01-16 18:09:24,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:24,919 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7076 transitions. [2020-01-16 18:09:24,919 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:24,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7076 transitions. [2020-01-16 18:09:24,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:24,922 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:24,922 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 18:09:24,922 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 18:09:24,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:24,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1377587756, now seen corresponding path program 484 times [2020-01-16 18:09:24,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:24,922 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759862215] [2020-01-16 18:09:24,922 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:24,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:25,451 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 18:09:25,451 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759862215] [2020-01-16 18:09:25,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:25,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:25,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638554500] [2020-01-16 18:09:25,452 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:25,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:25,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:25,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:25,452 INFO L87 Difference]: Start difference. First operand 1580 states and 7076 transitions. Second operand 11 states. [2020-01-16 18:09:25,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:25,636 INFO L93 Difference]: Finished difference Result 2973 states and 11780 transitions. [2020-01-16 18:09:25,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:25,637 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:25,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:25,644 INFO L225 Difference]: With dead ends: 2973 [2020-01-16 18:09:25,644 INFO L226 Difference]: Without dead ends: 2950 [2020-01-16 18:09:25,644 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:09:25,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2020-01-16 18:09:25,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 1575. [2020-01-16 18:09:25,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:09:25,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7062 transitions. [2020-01-16 18:09:25,711 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7062 transitions. Word has length 28 [2020-01-16 18:09:25,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:25,711 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7062 transitions. [2020-01-16 18:09:25,711 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:25,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7062 transitions. [2020-01-16 18:09:25,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:25,713 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:25,713 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 18:09:25,713 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 18:09:25,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:25,714 INFO L82 PathProgramCache]: Analyzing trace with hash -440200122, now seen corresponding path program 485 times [2020-01-16 18:09:25,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:25,714 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799125057] [2020-01-16 18:09:25,714 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:25,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:26,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:09:26,327 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799125057] [2020-01-16 18:09:26,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:26,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:26,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880884095] [2020-01-16 18:09:26,327 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:26,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:26,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:26,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:26,328 INFO L87 Difference]: Start difference. First operand 1575 states and 7062 transitions. Second operand 11 states. [2020-01-16 18:09:26,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:26,454 INFO L93 Difference]: Finished difference Result 2985 states and 11804 transitions. [2020-01-16 18:09:26,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:26,455 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:26,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:26,462 INFO L225 Difference]: With dead ends: 2985 [2020-01-16 18:09:26,462 INFO L226 Difference]: Without dead ends: 2965 [2020-01-16 18:09:26,462 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 18:09:26,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2965 states. [2020-01-16 18:09:26,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2965 to 1585. [2020-01-16 18:09:26,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 18:09:26,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7079 transitions. [2020-01-16 18:09:26,528 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7079 transitions. Word has length 28 [2020-01-16 18:09:26,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:26,529 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7079 transitions. [2020-01-16 18:09:26,529 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:26,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7079 transitions. [2020-01-16 18:09:26,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:26,531 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:26,531 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 18:09:26,531 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 18:09:26,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:26,531 INFO L82 PathProgramCache]: Analyzing trace with hash 304502376, now seen corresponding path program 486 times [2020-01-16 18:09:26,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:26,531 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387788586] [2020-01-16 18:09:26,532 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:26,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:27,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:09:27,078 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387788586] [2020-01-16 18:09:27,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:27,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:27,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895081726] [2020-01-16 18:09:27,078 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:27,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:27,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:27,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:27,078 INFO L87 Difference]: Start difference. First operand 1585 states and 7079 transitions. Second operand 11 states. [2020-01-16 18:09:27,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:27,281 INFO L93 Difference]: Finished difference Result 2983 states and 11792 transitions. [2020-01-16 18:09:27,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:27,281 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:27,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:27,289 INFO L225 Difference]: With dead ends: 2983 [2020-01-16 18:09:27,289 INFO L226 Difference]: Without dead ends: 2948 [2020-01-16 18:09:27,290 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 18:09:27,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2948 states. [2020-01-16 18:09:27,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2948 to 1568. [2020-01-16 18:09:27,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 18:09:27,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7043 transitions. [2020-01-16 18:09:27,357 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7043 transitions. Word has length 28 [2020-01-16 18:09:27,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:27,357 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7043 transitions. [2020-01-16 18:09:27,357 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:27,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7043 transitions. [2020-01-16 18:09:27,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:27,359 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:27,359 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:09:27,359 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 18:09:27,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:27,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1321160334, now seen corresponding path program 487 times [2020-01-16 18:09:27,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:27,360 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8557032] [2020-01-16 18:09:27,360 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:27,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:27,910 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 18:09:27,910 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8557032] [2020-01-16 18:09:27,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:27,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:27,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186103250] [2020-01-16 18:09:27,910 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:27,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:27,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:27,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:27,911 INFO L87 Difference]: Start difference. First operand 1568 states and 7043 transitions. Second operand 11 states. [2020-01-16 18:09:28,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:28,082 INFO L93 Difference]: Finished difference Result 2961 states and 11754 transitions. [2020-01-16 18:09:28,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:28,083 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:28,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:28,090 INFO L225 Difference]: With dead ends: 2961 [2020-01-16 18:09:28,090 INFO L226 Difference]: Without dead ends: 2946 [2020-01-16 18:09:28,091 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 18:09:28,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2946 states. [2020-01-16 18:09:28,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2946 to 1579. [2020-01-16 18:09:28,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:09:28,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7072 transitions. [2020-01-16 18:09:28,157 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7072 transitions. Word has length 28 [2020-01-16 18:09:28,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:28,157 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7072 transitions. [2020-01-16 18:09:28,157 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:28,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7072 transitions. [2020-01-16 18:09:28,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:28,160 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:28,160 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 18:09:28,160 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 18:09:28,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:28,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1484401966, now seen corresponding path program 488 times [2020-01-16 18:09:28,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:28,160 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686755686] [2020-01-16 18:09:28,160 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:28,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:28,689 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 18:09:28,689 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686755686] [2020-01-16 18:09:28,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:28,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:28,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273765795] [2020-01-16 18:09:28,690 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:28,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:28,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:28,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:28,690 INFO L87 Difference]: Start difference. First operand 1579 states and 7072 transitions. Second operand 11 states. [2020-01-16 18:09:28,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:28,836 INFO L93 Difference]: Finished difference Result 2966 states and 11758 transitions. [2020-01-16 18:09:28,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:28,837 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:28,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:28,844 INFO L225 Difference]: With dead ends: 2966 [2020-01-16 18:09:28,845 INFO L226 Difference]: Without dead ends: 2940 [2020-01-16 18:09:28,845 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:09:28,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2940 states. [2020-01-16 18:09:28,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2940 to 1573. [2020-01-16 18:09:28,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:09:28,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7056 transitions. [2020-01-16 18:09:28,916 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7056 transitions. Word has length 28 [2020-01-16 18:09:28,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:28,916 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7056 transitions. [2020-01-16 18:09:28,916 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:28,916 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7056 transitions. [2020-01-16 18:09:28,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:28,919 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:28,919 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:09:28,919 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 18:09:28,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:28,919 INFO L82 PathProgramCache]: Analyzing trace with hash -825010426, now seen corresponding path program 489 times [2020-01-16 18:09:28,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:28,919 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861851047] [2020-01-16 18:09:28,920 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:28,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:29,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:09:29,453 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861851047] [2020-01-16 18:09:29,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:29,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:29,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938248436] [2020-01-16 18:09:29,454 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:29,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:29,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:29,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:29,454 INFO L87 Difference]: Start difference. First operand 1573 states and 7056 transitions. Second operand 11 states. [2020-01-16 18:09:29,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:29,630 INFO L93 Difference]: Finished difference Result 2953 states and 11733 transitions. [2020-01-16 18:09:29,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:29,631 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:29,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:29,638 INFO L225 Difference]: With dead ends: 2953 [2020-01-16 18:09:29,638 INFO L226 Difference]: Without dead ends: 2938 [2020-01-16 18:09:29,639 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 18:09:29,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2020-01-16 18:09:29,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 1577. [2020-01-16 18:09:29,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:09:29,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7063 transitions. [2020-01-16 18:09:29,705 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7063 transitions. Word has length 28 [2020-01-16 18:09:29,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:29,705 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7063 transitions. [2020-01-16 18:09:29,705 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:29,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7063 transitions. [2020-01-16 18:09:29,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:29,708 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:29,708 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 18:09:29,708 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 18:09:29,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:29,708 INFO L82 PathProgramCache]: Analyzing trace with hash -651762734, now seen corresponding path program 490 times [2020-01-16 18:09:29,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:29,708 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138452022] [2020-01-16 18:09:29,708 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:29,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:30,234 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:09:30,240 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 18:09:30,241 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138452022] [2020-01-16 18:09:30,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:30,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:30,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343864000] [2020-01-16 18:09:30,241 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:30,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:30,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:30,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:30,241 INFO L87 Difference]: Start difference. First operand 1577 states and 7063 transitions. Second operand 11 states. [2020-01-16 18:09:30,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:30,451 INFO L93 Difference]: Finished difference Result 2952 states and 11727 transitions. [2020-01-16 18:09:30,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:30,452 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:30,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:30,459 INFO L225 Difference]: With dead ends: 2952 [2020-01-16 18:09:30,459 INFO L226 Difference]: Without dead ends: 2934 [2020-01-16 18:09:30,459 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:09:30,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2934 states. [2020-01-16 18:09:30,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2934 to 1573. [2020-01-16 18:09:30,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:09:30,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7052 transitions. [2020-01-16 18:09:30,526 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7052 transitions. Word has length 28 [2020-01-16 18:09:30,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:30,526 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7052 transitions. [2020-01-16 18:09:30,526 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:30,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7052 transitions. [2020-01-16 18:09:30,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:30,528 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:30,528 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:09:30,528 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 18:09:30,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:30,528 INFO L82 PathProgramCache]: Analyzing trace with hash -408690810, now seen corresponding path program 491 times [2020-01-16 18:09:30,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:30,529 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418398402] [2020-01-16 18:09:30,529 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:30,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:31,053 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 18:09:31,053 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418398402] [2020-01-16 18:09:31,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:31,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:31,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245246781] [2020-01-16 18:09:31,054 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:31,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:31,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:31,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:31,054 INFO L87 Difference]: Start difference. First operand 1573 states and 7052 transitions. Second operand 11 states. [2020-01-16 18:09:31,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:31,193 INFO L93 Difference]: Finished difference Result 2964 states and 11749 transitions. [2020-01-16 18:09:31,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:31,193 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:31,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:31,200 INFO L225 Difference]: With dead ends: 2964 [2020-01-16 18:09:31,200 INFO L226 Difference]: Without dead ends: 2944 [2020-01-16 18:09:31,200 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:09:31,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2944 states. [2020-01-16 18:09:31,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2944 to 1578. [2020-01-16 18:09:31,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:09:31,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7060 transitions. [2020-01-16 18:09:31,267 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7060 transitions. Word has length 28 [2020-01-16 18:09:31,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:31,267 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7060 transitions. [2020-01-16 18:09:31,267 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:31,267 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7060 transitions. [2020-01-16 18:09:31,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:31,269 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:31,270 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:09:31,270 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 18:09:31,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:31,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1724848114, now seen corresponding path program 492 times [2020-01-16 18:09:31,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:31,270 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145891237] [2020-01-16 18:09:31,270 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:31,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:31,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:09:31,792 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145891237] [2020-01-16 18:09:31,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:31,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:31,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598537106] [2020-01-16 18:09:31,793 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:31,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:31,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:31,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:31,793 INFO L87 Difference]: Start difference. First operand 1578 states and 7060 transitions. Second operand 11 states. [2020-01-16 18:09:31,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:31,979 INFO L93 Difference]: Finished difference Result 2958 states and 11733 transitions. [2020-01-16 18:09:31,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:31,980 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:31,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:31,987 INFO L225 Difference]: With dead ends: 2958 [2020-01-16 18:09:31,988 INFO L226 Difference]: Without dead ends: 2934 [2020-01-16 18:09:31,988 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 18:09:32,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2934 states. [2020-01-16 18:09:32,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2934 to 1568. [2020-01-16 18:09:32,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 18:09:32,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7038 transitions. [2020-01-16 18:09:32,073 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7038 transitions. Word has length 28 [2020-01-16 18:09:32,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:32,073 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7038 transitions. [2020-01-16 18:09:32,073 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:32,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7038 transitions. [2020-01-16 18:09:32,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:32,076 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:32,076 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:09:32,076 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 18:09:32,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:32,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1331663438, now seen corresponding path program 493 times [2020-01-16 18:09:32,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:32,076 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797463980] [2020-01-16 18:09:32,076 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:32,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:32,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:09:32,591 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797463980] [2020-01-16 18:09:32,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:32,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:32,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711462170] [2020-01-16 18:09:32,591 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:32,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:32,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:32,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:32,592 INFO L87 Difference]: Start difference. First operand 1568 states and 7038 transitions. Second operand 11 states. [2020-01-16 18:09:32,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:32,769 INFO L93 Difference]: Finished difference Result 2953 states and 11734 transitions. [2020-01-16 18:09:32,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:32,770 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:32,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:32,777 INFO L225 Difference]: With dead ends: 2953 [2020-01-16 18:09:32,777 INFO L226 Difference]: Without dead ends: 2938 [2020-01-16 18:09:32,777 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 18:09:32,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2020-01-16 18:09:32,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 1577. [2020-01-16 18:09:32,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:09:32,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7062 transitions. [2020-01-16 18:09:32,846 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7062 transitions. Word has length 28 [2020-01-16 18:09:32,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:32,846 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7062 transitions. [2020-01-16 18:09:32,846 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:32,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7062 transitions. [2020-01-16 18:09:32,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:32,848 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:32,848 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 18:09:32,849 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 18:09:32,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:32,849 INFO L82 PathProgramCache]: Analyzing trace with hash -729196364, now seen corresponding path program 494 times [2020-01-16 18:09:32,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:32,849 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711692639] [2020-01-16 18:09:32,849 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:32,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:33,369 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 18:09:33,369 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711692639] [2020-01-16 18:09:33,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:33,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:33,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084825366] [2020-01-16 18:09:33,370 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:33,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:33,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:33,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:33,370 INFO L87 Difference]: Start difference. First operand 1577 states and 7062 transitions. Second operand 11 states. [2020-01-16 18:09:33,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:33,545 INFO L93 Difference]: Finished difference Result 2956 states and 11735 transitions. [2020-01-16 18:09:33,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:33,546 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:33,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:33,553 INFO L225 Difference]: With dead ends: 2956 [2020-01-16 18:09:33,554 INFO L226 Difference]: Without dead ends: 2933 [2020-01-16 18:09:33,554 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:09:33,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2933 states. [2020-01-16 18:09:33,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2933 to 1572. [2020-01-16 18:09:33,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:09:33,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7049 transitions. [2020-01-16 18:09:33,622 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7049 transitions. Word has length 28 [2020-01-16 18:09:33,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:33,622 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7049 transitions. [2020-01-16 18:09:33,622 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:33,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7049 transitions. [2020-01-16 18:09:33,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:33,624 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:33,624 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:09:33,625 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 18:09:33,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:33,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1869519016, now seen corresponding path program 495 times [2020-01-16 18:09:33,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:33,625 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764708239] [2020-01-16 18:09:33,625 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:33,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:34,148 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:09:34,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:09:34,155 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764708239] [2020-01-16 18:09:34,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:34,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:34,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331822500] [2020-01-16 18:09:34,155 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:34,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:34,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:34,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:34,156 INFO L87 Difference]: Start difference. First operand 1572 states and 7049 transitions. Second operand 11 states. [2020-01-16 18:09:34,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:34,336 INFO L93 Difference]: Finished difference Result 2948 states and 11719 transitions. [2020-01-16 18:09:34,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:34,337 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:34,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:34,344 INFO L225 Difference]: With dead ends: 2948 [2020-01-16 18:09:34,344 INFO L226 Difference]: Without dead ends: 2933 [2020-01-16 18:09:34,344 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:09:34,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2933 states. [2020-01-16 18:09:34,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2933 to 1576. [2020-01-16 18:09:34,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:09:34,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7056 transitions. [2020-01-16 18:09:34,410 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7056 transitions. Word has length 28 [2020-01-16 18:09:34,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:34,410 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7056 transitions. [2020-01-16 18:09:34,410 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:34,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7056 transitions. [2020-01-16 18:09:34,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:34,413 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:34,413 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 18:09:34,413 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 18:09:34,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:34,413 INFO L82 PathProgramCache]: Analyzing trace with hash 2042766708, now seen corresponding path program 496 times [2020-01-16 18:09:34,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:34,413 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397618183] [2020-01-16 18:09:34,413 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:34,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:34,943 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 18:09:34,950 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 18:09:34,950 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397618183] [2020-01-16 18:09:34,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:34,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:34,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658798220] [2020-01-16 18:09:34,951 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:34,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:34,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:34,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:34,951 INFO L87 Difference]: Start difference. First operand 1576 states and 7056 transitions. Second operand 11 states. [2020-01-16 18:09:35,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:35,127 INFO L93 Difference]: Finished difference Result 2947 states and 11713 transitions. [2020-01-16 18:09:35,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:35,127 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:35,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:35,134 INFO L225 Difference]: With dead ends: 2947 [2020-01-16 18:09:35,134 INFO L226 Difference]: Without dead ends: 2929 [2020-01-16 18:09:35,135 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 18:09:35,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2929 states. [2020-01-16 18:09:35,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2929 to 1572. [2020-01-16 18:09:35,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:09:35,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7045 transitions. [2020-01-16 18:09:35,203 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7045 transitions. Word has length 28 [2020-01-16 18:09:35,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:35,203 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7045 transitions. [2020-01-16 18:09:35,203 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:35,203 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7045 transitions. [2020-01-16 18:09:35,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:35,205 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:35,205 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 18:09:35,205 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 18:09:35,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:35,206 INFO L82 PathProgramCache]: Analyzing trace with hash 346514792, now seen corresponding path program 497 times [2020-01-16 18:09:35,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:35,206 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447377778] [2020-01-16 18:09:35,206 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:35,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:35,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:09:35,728 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447377778] [2020-01-16 18:09:35,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:35,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:35,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520628671] [2020-01-16 18:09:35,729 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:35,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:35,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:35,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:35,729 INFO L87 Difference]: Start difference. First operand 1572 states and 7045 transitions. Second operand 11 states. [2020-01-16 18:09:35,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:35,923 INFO L93 Difference]: Finished difference Result 2954 states and 11727 transitions. [2020-01-16 18:09:35,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:35,923 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:35,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:35,931 INFO L225 Difference]: With dead ends: 2954 [2020-01-16 18:09:35,931 INFO L226 Difference]: Without dead ends: 2936 [2020-01-16 18:09:35,931 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 18:09:35,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2936 states. [2020-01-16 18:09:35,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2936 to 1576. [2020-01-16 18:09:35,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:09:35,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7052 transitions. [2020-01-16 18:09:35,998 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7052 transitions. Word has length 28 [2020-01-16 18:09:35,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:35,998 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7052 transitions. [2020-01-16 18:09:35,998 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:35,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7052 transitions. [2020-01-16 18:09:36,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:36,000 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:36,000 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:09:36,000 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 18:09:36,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:36,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1714345010, now seen corresponding path program 498 times [2020-01-16 18:09:36,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:36,001 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648609157] [2020-01-16 18:09:36,001 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:36,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:36,520 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 18:09:36,521 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648609157] [2020-01-16 18:09:36,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:36,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:36,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556162818] [2020-01-16 18:09:36,521 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:36,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:36,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:36,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:36,522 INFO L87 Difference]: Start difference. First operand 1576 states and 7052 transitions. Second operand 11 states. [2020-01-16 18:09:36,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:36,698 INFO L93 Difference]: Finished difference Result 2950 states and 11715 transitions. [2020-01-16 18:09:36,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:36,698 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:36,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:36,706 INFO L225 Difference]: With dead ends: 2950 [2020-01-16 18:09:36,706 INFO L226 Difference]: Without dead ends: 2928 [2020-01-16 18:09:36,706 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:09:36,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2020-01-16 18:09:36,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 1568. [2020-01-16 18:09:36,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 18:09:36,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7034 transitions. [2020-01-16 18:09:36,772 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7034 transitions. Word has length 28 [2020-01-16 18:09:36,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:36,772 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7034 transitions. [2020-01-16 18:09:36,773 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:36,773 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7034 transitions. [2020-01-16 18:09:36,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:36,775 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:36,775 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 18:09:36,775 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 18:09:36,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:36,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1452892654, now seen corresponding path program 499 times [2020-01-16 18:09:36,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:36,775 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089302961] [2020-01-16 18:09:36,775 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:36,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:37,321 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 18:09:37,321 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089302961] [2020-01-16 18:09:37,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:37,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:37,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542955212] [2020-01-16 18:09:37,321 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:37,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:37,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:37,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:37,322 INFO L87 Difference]: Start difference. First operand 1568 states and 7034 transitions. Second operand 11 states. [2020-01-16 18:09:37,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:37,460 INFO L93 Difference]: Finished difference Result 2981 states and 11788 transitions. [2020-01-16 18:09:37,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:37,461 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:37,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:37,468 INFO L225 Difference]: With dead ends: 2981 [2020-01-16 18:09:37,469 INFO L226 Difference]: Without dead ends: 2961 [2020-01-16 18:09:37,469 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:09:37,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2020-01-16 18:09:37,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 1584. [2020-01-16 18:09:37,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1584 states. [2020-01-16 18:09:37,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 7071 transitions. [2020-01-16 18:09:37,535 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 7071 transitions. Word has length 28 [2020-01-16 18:09:37,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:37,536 INFO L478 AbstractCegarLoop]: Abstraction has 1584 states and 7071 transitions. [2020-01-16 18:09:37,536 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:37,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 7071 transitions. [2020-01-16 18:09:37,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:37,538 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:37,538 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:09:37,538 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 18:09:37,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:37,538 INFO L82 PathProgramCache]: Analyzing trace with hash -708190156, now seen corresponding path program 500 times [2020-01-16 18:09:37,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:37,539 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764230004] [2020-01-16 18:09:37,539 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:37,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:38,099 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 18:09:38,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:09:38,106 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764230004] [2020-01-16 18:09:38,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:38,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:38,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5310093] [2020-01-16 18:09:38,107 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:38,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:38,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:38,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:38,107 INFO L87 Difference]: Start difference. First operand 1584 states and 7071 transitions. Second operand 11 states. [2020-01-16 18:09:38,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:38,280 INFO L93 Difference]: Finished difference Result 2979 states and 11776 transitions. [2020-01-16 18:09:38,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:38,280 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:38,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:38,288 INFO L225 Difference]: With dead ends: 2979 [2020-01-16 18:09:38,288 INFO L226 Difference]: Without dead ends: 2951 [2020-01-16 18:09:38,288 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 18:09:38,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2020-01-16 18:09:38,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 1574. [2020-01-16 18:09:38,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:09:38,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7048 transitions. [2020-01-16 18:09:38,357 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7048 transitions. Word has length 28 [2020-01-16 18:09:38,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:38,357 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7048 transitions. [2020-01-16 18:09:38,357 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:38,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7048 transitions. [2020-01-16 18:09:38,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:38,360 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:38,360 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 18:09:38,360 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 18:09:38,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:38,360 INFO L82 PathProgramCache]: Analyzing trace with hash -915037076, now seen corresponding path program 501 times [2020-01-16 18:09:38,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:38,360 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637093223] [2020-01-16 18:09:38,360 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:38,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:38,880 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 18:09:38,881 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637093223] [2020-01-16 18:09:38,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:38,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:38,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705071358] [2020-01-16 18:09:38,881 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:38,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:38,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:38,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:38,881 INFO L87 Difference]: Start difference. First operand 1574 states and 7048 transitions. Second operand 11 states. [2020-01-16 18:09:39,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:39,018 INFO L93 Difference]: Finished difference Result 2972 states and 11761 transitions. [2020-01-16 18:09:39,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:39,018 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:39,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:39,026 INFO L225 Difference]: With dead ends: 2972 [2020-01-16 18:09:39,026 INFO L226 Difference]: Without dead ends: 2952 [2020-01-16 18:09:39,027 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:09:39,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2020-01-16 18:09:39,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 1579. [2020-01-16 18:09:39,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:09:39,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7056 transitions. [2020-01-16 18:09:39,095 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7056 transitions. Word has length 28 [2020-01-16 18:09:39,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:39,095 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7056 transitions. [2020-01-16 18:09:39,095 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:39,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7056 transitions. [2020-01-16 18:09:39,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:39,098 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:39,098 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 18:09:39,098 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 18:09:39,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:39,098 INFO L82 PathProgramCache]: Analyzing trace with hash 2063772916, now seen corresponding path program 502 times [2020-01-16 18:09:39,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:39,099 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516178149] [2020-01-16 18:09:39,099 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:39,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:39,603 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 18:09:39,603 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516178149] [2020-01-16 18:09:39,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:39,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:39,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563502645] [2020-01-16 18:09:39,604 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:39,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:39,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:39,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:39,604 INFO L87 Difference]: Start difference. First operand 1579 states and 7056 transitions. Second operand 11 states. [2020-01-16 18:09:39,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:39,781 INFO L93 Difference]: Finished difference Result 2966 states and 11745 transitions. [2020-01-16 18:09:39,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:39,781 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:39,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:39,788 INFO L225 Difference]: With dead ends: 2966 [2020-01-16 18:09:39,788 INFO L226 Difference]: Without dead ends: 2947 [2020-01-16 18:09:39,789 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 18:09:39,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2947 states. [2020-01-16 18:09:39,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2947 to 1574. [2020-01-16 18:09:39,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:09:39,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7043 transitions. [2020-01-16 18:09:39,857 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7043 transitions. Word has length 28 [2020-01-16 18:09:39,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:39,857 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7043 transitions. [2020-01-16 18:09:39,857 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:39,857 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7043 transitions. [2020-01-16 18:09:39,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:39,860 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:39,860 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 18:09:39,860 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 18:09:39,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:39,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1440606380, now seen corresponding path program 503 times [2020-01-16 18:09:39,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:39,860 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994241861] [2020-01-16 18:09:39,860 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:39,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:40,380 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 18:09:40,381 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994241861] [2020-01-16 18:09:40,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:40,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:40,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875288527] [2020-01-16 18:09:40,381 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:40,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:40,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:40,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:40,382 INFO L87 Difference]: Start difference. First operand 1574 states and 7043 transitions. Second operand 11 states. [2020-01-16 18:09:40,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:40,561 INFO L93 Difference]: Finished difference Result 2967 states and 11748 transitions. [2020-01-16 18:09:40,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:40,562 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:40,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:40,569 INFO L225 Difference]: With dead ends: 2967 [2020-01-16 18:09:40,570 INFO L226 Difference]: Without dead ends: 2949 [2020-01-16 18:09:40,570 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:09:40,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2949 states. [2020-01-16 18:09:40,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2949 to 1578. [2020-01-16 18:09:40,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:09:40,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7050 transitions. [2020-01-16 18:09:40,640 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7050 transitions. Word has length 28 [2020-01-16 18:09:40,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:40,640 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7050 transitions. [2020-01-16 18:09:40,640 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:40,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7050 transitions. [2020-01-16 18:09:40,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:40,642 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:40,642 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 18:09:40,642 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 18:09:40,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:40,643 INFO L82 PathProgramCache]: Analyzing trace with hash -620253422, now seen corresponding path program 504 times [2020-01-16 18:09:40,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:40,643 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701291284] [2020-01-16 18:09:40,643 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:40,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:41,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:09:41,170 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701291284] [2020-01-16 18:09:41,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:41,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:41,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499155927] [2020-01-16 18:09:41,171 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:41,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:41,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:41,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:41,172 INFO L87 Difference]: Start difference. First operand 1578 states and 7050 transitions. Second operand 11 states. [2020-01-16 18:09:41,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:41,356 INFO L93 Difference]: Finished difference Result 2963 states and 11736 transitions. [2020-01-16 18:09:41,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:41,356 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:41,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:41,363 INFO L225 Difference]: With dead ends: 2963 [2020-01-16 18:09:41,363 INFO L226 Difference]: Without dead ends: 2933 [2020-01-16 18:09:41,364 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:09:41,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2933 states. [2020-01-16 18:09:41,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2933 to 1562. [2020-01-16 18:09:41,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1562 states. [2020-01-16 18:09:41,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1562 states to 1562 states and 7017 transitions. [2020-01-16 18:09:41,434 INFO L78 Accepts]: Start accepts. Automaton has 1562 states and 7017 transitions. Word has length 28 [2020-01-16 18:09:41,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:41,434 INFO L478 AbstractCegarLoop]: Abstraction has 1562 states and 7017 transitions. [2020-01-16 18:09:41,434 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:41,434 INFO L276 IsEmpty]: Start isEmpty. Operand 1562 states and 7017 transitions. [2020-01-16 18:09:41,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:41,436 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:41,437 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 18:09:41,437 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 18:09:41,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:41,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1384607460, now seen corresponding path program 505 times [2020-01-16 18:09:41,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:41,437 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553611894] [2020-01-16 18:09:41,437 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:41,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:41,973 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 18:09:41,973 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553611894] [2020-01-16 18:09:41,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:41,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:41,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116820564] [2020-01-16 18:09:41,974 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:41,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:41,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:41,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:41,974 INFO L87 Difference]: Start difference. First operand 1562 states and 7017 transitions. Second operand 11 states. [2020-01-16 18:09:42,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:42,179 INFO L93 Difference]: Finished difference Result 2991 states and 11839 transitions. [2020-01-16 18:09:42,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:42,180 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:42,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:42,188 INFO L225 Difference]: With dead ends: 2991 [2020-01-16 18:09:42,188 INFO L226 Difference]: Without dead ends: 2976 [2020-01-16 18:09:42,188 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:09:42,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2976 states. [2020-01-16 18:09:42,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2976 to 1583. [2020-01-16 18:09:42,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:09:42,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7085 transitions. [2020-01-16 18:09:42,255 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7085 transitions. Word has length 28 [2020-01-16 18:09:42,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:42,255 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7085 transitions. [2020-01-16 18:09:42,255 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:42,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7085 transitions. [2020-01-16 18:09:42,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:42,257 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:42,258 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 18:09:42,258 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 18:09:42,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:42,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1420954840, now seen corresponding path program 506 times [2020-01-16 18:09:42,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:42,258 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250414277] [2020-01-16 18:09:42,258 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:42,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:42,804 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 18:09:42,805 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250414277] [2020-01-16 18:09:42,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:42,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:42,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590406464] [2020-01-16 18:09:42,805 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:42,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:42,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:42,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:42,806 INFO L87 Difference]: Start difference. First operand 1583 states and 7085 transitions. Second operand 11 states. [2020-01-16 18:09:42,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:42,949 INFO L93 Difference]: Finished difference Result 2996 states and 11843 transitions. [2020-01-16 18:09:42,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:42,949 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:42,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:42,956 INFO L225 Difference]: With dead ends: 2996 [2020-01-16 18:09:42,956 INFO L226 Difference]: Without dead ends: 2970 [2020-01-16 18:09:42,956 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:09:42,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2970 states. [2020-01-16 18:09:43,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2970 to 1577. [2020-01-16 18:09:43,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:09:43,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7068 transitions. [2020-01-16 18:09:43,023 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7068 transitions. Word has length 28 [2020-01-16 18:09:43,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:43,023 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7068 transitions. [2020-01-16 18:09:43,023 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:43,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7068 transitions. [2020-01-16 18:09:43,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:43,025 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:43,025 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:09:43,025 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 18:09:43,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:43,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1299418878, now seen corresponding path program 507 times [2020-01-16 18:09:43,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:43,026 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157309190] [2020-01-16 18:09:43,026 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:43,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:43,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:09:43,567 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157309190] [2020-01-16 18:09:43,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:43,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:43,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030214385] [2020-01-16 18:09:43,568 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:43,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:43,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:43,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:43,568 INFO L87 Difference]: Start difference. First operand 1577 states and 7068 transitions. Second operand 11 states. [2020-01-16 18:09:43,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:43,777 INFO L93 Difference]: Finished difference Result 2988 states and 11828 transitions. [2020-01-16 18:09:43,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:43,778 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:43,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:43,785 INFO L225 Difference]: With dead ends: 2988 [2020-01-16 18:09:43,786 INFO L226 Difference]: Without dead ends: 2973 [2020-01-16 18:09:43,786 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 18:09:43,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2973 states. [2020-01-16 18:09:43,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2973 to 1582. [2020-01-16 18:09:43,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 18:09:43,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7077 transitions. [2020-01-16 18:09:43,873 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7077 transitions. Word has length 28 [2020-01-16 18:09:43,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:43,873 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7077 transitions. [2020-01-16 18:09:43,873 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:43,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7077 transitions. [2020-01-16 18:09:43,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:43,875 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:43,875 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 18:09:43,875 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 18:09:43,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:43,876 INFO L82 PathProgramCache]: Analyzing trace with hash 934688616, now seen corresponding path program 508 times [2020-01-16 18:09:43,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:43,876 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147923609] [2020-01-16 18:09:43,876 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:43,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:44,404 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 18:09:44,405 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147923609] [2020-01-16 18:09:44,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:44,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:44,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833349069] [2020-01-16 18:09:44,405 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:44,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:44,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:44,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:44,405 INFO L87 Difference]: Start difference. First operand 1582 states and 7077 transitions. Second operand 11 states. [2020-01-16 18:09:44,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:44,619 INFO L93 Difference]: Finished difference Result 2991 states and 11829 transitions. [2020-01-16 18:09:44,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:44,620 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:44,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:44,627 INFO L225 Difference]: With dead ends: 2991 [2020-01-16 18:09:44,628 INFO L226 Difference]: Without dead ends: 2968 [2020-01-16 18:09:44,628 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:09:44,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2968 states. [2020-01-16 18:09:44,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2968 to 1577. [2020-01-16 18:09:44,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:09:44,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7063 transitions. [2020-01-16 18:09:44,697 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7063 transitions. Word has length 28 [2020-01-16 18:09:44,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:44,697 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7063 transitions. [2020-01-16 18:09:44,697 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:44,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7063 transitions. [2020-01-16 18:09:44,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:44,699 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:44,699 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:09:44,700 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 18:09:44,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:44,700 INFO L82 PathProgramCache]: Analyzing trace with hash -883099262, now seen corresponding path program 509 times [2020-01-16 18:09:44,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:44,700 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780796175] [2020-01-16 18:09:44,700 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:44,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:45,244 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 18:09:45,244 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780796175] [2020-01-16 18:09:45,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:45,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:45,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313530147] [2020-01-16 18:09:45,245 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:45,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:45,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:45,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:45,245 INFO L87 Difference]: Start difference. First operand 1577 states and 7063 transitions. Second operand 11 states. [2020-01-16 18:09:45,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:45,471 INFO L93 Difference]: Finished difference Result 3003 states and 11853 transitions. [2020-01-16 18:09:45,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:45,471 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:45,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:45,478 INFO L225 Difference]: With dead ends: 3003 [2020-01-16 18:09:45,479 INFO L226 Difference]: Without dead ends: 2983 [2020-01-16 18:09:45,479 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 18:09:45,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2983 states. [2020-01-16 18:09:45,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2983 to 1587. [2020-01-16 18:09:45,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1587 states. [2020-01-16 18:09:45,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 7080 transitions. [2020-01-16 18:09:45,546 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 7080 transitions. Word has length 28 [2020-01-16 18:09:45,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:45,546 INFO L478 AbstractCegarLoop]: Abstraction has 1587 states and 7080 transitions. [2020-01-16 18:09:45,546 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:45,546 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 7080 transitions. [2020-01-16 18:09:45,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:45,548 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:45,548 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:09:45,549 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 18:09:45,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:45,549 INFO L82 PathProgramCache]: Analyzing trace with hash -138396764, now seen corresponding path program 510 times [2020-01-16 18:09:45,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:45,549 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971073522] [2020-01-16 18:09:45,549 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:45,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:46,093 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:09:46,099 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 18:09:46,100 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971073522] [2020-01-16 18:09:46,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:46,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:46,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003995978] [2020-01-16 18:09:46,100 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:46,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:46,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:46,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:46,100 INFO L87 Difference]: Start difference. First operand 1587 states and 7080 transitions. Second operand 11 states. [2020-01-16 18:09:46,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:46,346 INFO L93 Difference]: Finished difference Result 3001 states and 11841 transitions. [2020-01-16 18:09:46,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:46,346 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:46,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:46,354 INFO L225 Difference]: With dead ends: 3001 [2020-01-16 18:09:46,354 INFO L226 Difference]: Without dead ends: 2966 [2020-01-16 18:09:46,354 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 18:09:46,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2966 states. [2020-01-16 18:09:46,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2966 to 1570. [2020-01-16 18:09:46,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:09:46,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7043 transitions. [2020-01-16 18:09:46,422 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7043 transitions. Word has length 28 [2020-01-16 18:09:46,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:46,423 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7043 transitions. [2020-01-16 18:09:46,423 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:46,423 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7043 transitions. [2020-01-16 18:09:46,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:46,425 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:46,425 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:09:46,425 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 18:09:46,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:46,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1972352782, now seen corresponding path program 511 times [2020-01-16 18:09:46,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:46,426 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40555305] [2020-01-16 18:09:46,426 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:46,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:46,945 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 18:09:46,946 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40555305] [2020-01-16 18:09:46,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:46,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:46,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959513679] [2020-01-16 18:09:46,946 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:46,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:46,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:46,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:46,946 INFO L87 Difference]: Start difference. First operand 1570 states and 7043 transitions. Second operand 11 states. [2020-01-16 18:09:47,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:47,142 INFO L93 Difference]: Finished difference Result 2987 states and 11824 transitions. [2020-01-16 18:09:47,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:47,142 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:47,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:47,149 INFO L225 Difference]: With dead ends: 2987 [2020-01-16 18:09:47,150 INFO L226 Difference]: Without dead ends: 2972 [2020-01-16 18:09:47,150 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:09:47,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2972 states. [2020-01-16 18:09:47,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2972 to 1582. [2020-01-16 18:09:47,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 18:09:47,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7076 transitions. [2020-01-16 18:09:47,217 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7076 transitions. Word has length 28 [2020-01-16 18:09:47,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:47,218 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7076 transitions. [2020-01-16 18:09:47,218 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:47,218 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7076 transitions. [2020-01-16 18:09:47,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:47,220 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:47,220 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:09:47,220 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 18:09:47,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:47,220 INFO L82 PathProgramCache]: Analyzing trace with hash -833209518, now seen corresponding path program 512 times [2020-01-16 18:09:47,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:47,221 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129899594] [2020-01-16 18:09:47,221 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:47,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:47,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:09:47,777 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129899594] [2020-01-16 18:09:47,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:47,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:47,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808144688] [2020-01-16 18:09:47,778 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:47,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:47,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:47,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:47,778 INFO L87 Difference]: Start difference. First operand 1582 states and 7076 transitions. Second operand 11 states. [2020-01-16 18:09:47,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:47,970 INFO L93 Difference]: Finished difference Result 2992 states and 11828 transitions. [2020-01-16 18:09:47,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:47,970 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:47,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:47,976 INFO L225 Difference]: With dead ends: 2992 [2020-01-16 18:09:47,976 INFO L226 Difference]: Without dead ends: 2966 [2020-01-16 18:09:47,976 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 18:09:48,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2966 states. [2020-01-16 18:09:48,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2966 to 1576. [2020-01-16 18:09:48,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:09:48,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7059 transitions. [2020-01-16 18:09:48,042 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7059 transitions. Word has length 28 [2020-01-16 18:09:48,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:48,043 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7059 transitions. [2020-01-16 18:09:48,043 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:48,043 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7059 transitions. [2020-01-16 18:09:48,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:48,045 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:48,045 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 18:09:48,045 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 18:09:48,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:48,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1246903358, now seen corresponding path program 513 times [2020-01-16 18:09:48,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:48,045 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657033752] [2020-01-16 18:09:48,045 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:48,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:48,569 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 18:09:48,570 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657033752] [2020-01-16 18:09:48,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:48,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:48,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686261015] [2020-01-16 18:09:48,570 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:48,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:48,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:48,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:48,570 INFO L87 Difference]: Start difference. First operand 1576 states and 7059 transitions. Second operand 11 states. [2020-01-16 18:09:48,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:48,756 INFO L93 Difference]: Finished difference Result 2983 states and 11811 transitions. [2020-01-16 18:09:48,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:48,757 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:48,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:48,764 INFO L225 Difference]: With dead ends: 2983 [2020-01-16 18:09:48,764 INFO L226 Difference]: Without dead ends: 2968 [2020-01-16 18:09:48,765 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 18:09:48,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2968 states. [2020-01-16 18:09:48,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2968 to 1581. [2020-01-16 18:09:48,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:09:48,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7068 transitions. [2020-01-16 18:09:48,833 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7068 transitions. Word has length 28 [2020-01-16 18:09:48,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:48,833 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7068 transitions. [2020-01-16 18:09:48,833 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:48,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7068 transitions. [2020-01-16 18:09:48,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:48,835 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:48,835 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:09:48,835 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 18:09:48,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:48,836 INFO L82 PathProgramCache]: Analyzing trace with hash 415749330, now seen corresponding path program 514 times [2020-01-16 18:09:48,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:48,836 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813564160] [2020-01-16 18:09:48,836 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:48,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:49,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:09:49,356 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813564160] [2020-01-16 18:09:49,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:49,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:49,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910691959] [2020-01-16 18:09:49,356 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:49,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:49,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:49,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:49,357 INFO L87 Difference]: Start difference. First operand 1581 states and 7068 transitions. Second operand 11 states. [2020-01-16 18:09:49,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:49,546 INFO L93 Difference]: Finished difference Result 2985 states and 11810 transitions. [2020-01-16 18:09:49,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:49,546 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:49,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:49,553 INFO L225 Difference]: With dead ends: 2985 [2020-01-16 18:09:49,553 INFO L226 Difference]: Without dead ends: 2963 [2020-01-16 18:09:49,554 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:09:49,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2963 states. [2020-01-16 18:09:49,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2963 to 1576. [2020-01-16 18:09:49,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:09:49,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7054 transitions. [2020-01-16 18:09:49,622 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7054 transitions. Word has length 28 [2020-01-16 18:09:49,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:49,622 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7054 transitions. [2020-01-16 18:09:49,622 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:49,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7054 transitions. [2020-01-16 18:09:49,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:49,625 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:49,625 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 18:09:49,625 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 18:09:49,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:49,625 INFO L82 PathProgramCache]: Analyzing trace with hash -830583742, now seen corresponding path program 515 times [2020-01-16 18:09:49,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:49,625 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904032314] [2020-01-16 18:09:49,625 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:49,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:50,172 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 18:09:50,172 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904032314] [2020-01-16 18:09:50,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:50,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:50,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390455992] [2020-01-16 18:09:50,172 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:50,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:50,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:50,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:50,173 INFO L87 Difference]: Start difference. First operand 1576 states and 7054 transitions. Second operand 11 states. [2020-01-16 18:09:50,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:50,350 INFO L93 Difference]: Finished difference Result 2996 states and 11832 transitions. [2020-01-16 18:09:50,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:50,350 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:50,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:50,357 INFO L225 Difference]: With dead ends: 2996 [2020-01-16 18:09:50,357 INFO L226 Difference]: Without dead ends: 2976 [2020-01-16 18:09:50,357 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:09:50,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2976 states. [2020-01-16 18:09:50,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2976 to 1584. [2020-01-16 18:09:50,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1584 states. [2020-01-16 18:09:50,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 7068 transitions. [2020-01-16 18:09:50,424 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 7068 transitions. Word has length 28 [2020-01-16 18:09:50,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:50,424 INFO L478 AbstractCegarLoop]: Abstraction has 1584 states and 7068 transitions. [2020-01-16 18:09:50,425 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:50,425 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 7068 transitions. [2020-01-16 18:09:50,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:50,427 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:50,427 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 18:09:50,427 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 18:09:50,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:50,427 INFO L82 PathProgramCache]: Analyzing trace with hash -657336050, now seen corresponding path program 516 times [2020-01-16 18:09:50,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:50,427 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321007895] [2020-01-16 18:09:50,427 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:50,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:50,950 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 18:09:50,951 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321007895] [2020-01-16 18:09:50,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:50,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:50,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294013875] [2020-01-16 18:09:50,951 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:50,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:50,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:50,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:50,952 INFO L87 Difference]: Start difference. First operand 1584 states and 7068 transitions. Second operand 11 states. [2020-01-16 18:09:51,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:51,191 INFO L93 Difference]: Finished difference Result 2993 states and 11819 transitions. [2020-01-16 18:09:51,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:51,192 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:51,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:51,199 INFO L225 Difference]: With dead ends: 2993 [2020-01-16 18:09:51,199 INFO L226 Difference]: Without dead ends: 2962 [2020-01-16 18:09:51,199 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:09:51,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2962 states. [2020-01-16 18:09:51,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2962 to 1570. [2020-01-16 18:09:51,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:09:51,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7037 transitions. [2020-01-16 18:09:51,268 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7037 transitions. Word has length 28 [2020-01-16 18:09:51,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:51,268 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7037 transitions. [2020-01-16 18:09:51,268 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:51,268 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7037 transitions. [2020-01-16 18:09:51,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:51,270 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:51,271 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 18:09:51,271 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 18:09:51,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:51,271 INFO L82 PathProgramCache]: Analyzing trace with hash 1982855886, now seen corresponding path program 517 times [2020-01-16 18:09:51,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:51,271 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311530677] [2020-01-16 18:09:51,271 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:51,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:51,793 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 18:09:51,794 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311530677] [2020-01-16 18:09:51,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:51,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:51,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140107477] [2020-01-16 18:09:51,794 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:51,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:51,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:51,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:51,795 INFO L87 Difference]: Start difference. First operand 1570 states and 7037 transitions. Second operand 11 states. [2020-01-16 18:09:52,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:52,059 INFO L93 Difference]: Finished difference Result 2979 states and 11803 transitions. [2020-01-16 18:09:52,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:52,059 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:52,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:52,066 INFO L225 Difference]: With dead ends: 2979 [2020-01-16 18:09:52,066 INFO L226 Difference]: Without dead ends: 2964 [2020-01-16 18:09:52,066 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:09:52,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2964 states. [2020-01-16 18:09:52,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2964 to 1580. [2020-01-16 18:09:52,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:09:52,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7065 transitions. [2020-01-16 18:09:52,133 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7065 transitions. Word has length 28 [2020-01-16 18:09:52,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:52,133 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7065 transitions. [2020-01-16 18:09:52,133 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:52,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7065 transitions. [2020-01-16 18:09:52,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:52,135 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:52,135 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:09:52,136 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 18:09:52,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:52,136 INFO L82 PathProgramCache]: Analyzing trace with hash -78003916, now seen corresponding path program 518 times [2020-01-16 18:09:52,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:52,136 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170294934] [2020-01-16 18:09:52,136 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:52,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:52,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:09:52,657 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170294934] [2020-01-16 18:09:52,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:52,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:52,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301775163] [2020-01-16 18:09:52,658 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:52,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:52,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:52,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:52,658 INFO L87 Difference]: Start difference. First operand 1580 states and 7065 transitions. Second operand 11 states. [2020-01-16 18:09:52,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:52,833 INFO L93 Difference]: Finished difference Result 2982 states and 11804 transitions. [2020-01-16 18:09:52,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:52,833 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:52,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:52,840 INFO L225 Difference]: With dead ends: 2982 [2020-01-16 18:09:52,840 INFO L226 Difference]: Without dead ends: 2959 [2020-01-16 18:09:52,840 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:09:52,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2959 states. [2020-01-16 18:09:52,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2959 to 1575. [2020-01-16 18:09:52,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:09:52,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7051 transitions. [2020-01-16 18:09:52,907 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7051 transitions. Word has length 28 [2020-01-16 18:09:52,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:52,907 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7051 transitions. [2020-01-16 18:09:52,907 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:52,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7051 transitions. [2020-01-16 18:09:52,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:52,909 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:52,909 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:09:52,909 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 18:09:52,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:52,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1447626084, now seen corresponding path program 519 times [2020-01-16 18:09:52,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:52,910 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885999032] [2020-01-16 18:09:52,910 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:52,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:53,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:09:53,423 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885999032] [2020-01-16 18:09:53,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:53,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:53,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757132385] [2020-01-16 18:09:53,424 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:53,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:53,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:53,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:53,424 INFO L87 Difference]: Start difference. First operand 1575 states and 7051 transitions. Second operand 11 states. [2020-01-16 18:09:53,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:53,600 INFO L93 Difference]: Finished difference Result 2978 states and 11796 transitions. [2020-01-16 18:09:53,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:53,600 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:53,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:53,608 INFO L225 Difference]: With dead ends: 2978 [2020-01-16 18:09:53,608 INFO L226 Difference]: Without dead ends: 2963 [2020-01-16 18:09:53,608 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:09:53,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2963 states. [2020-01-16 18:09:53,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2963 to 1580. [2020-01-16 18:09:53,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:09:53,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7060 transitions. [2020-01-16 18:09:53,674 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7060 transitions. Word has length 28 [2020-01-16 18:09:53,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:53,674 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7060 transitions. [2020-01-16 18:09:53,674 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:53,674 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7060 transitions. [2020-01-16 18:09:53,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:53,677 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:53,677 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:09:53,677 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 18:09:53,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:53,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1184688524, now seen corresponding path program 520 times [2020-01-16 18:09:53,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:53,677 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206393370] [2020-01-16 18:09:53,677 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:54,201 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 18:09:54,201 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206393370] [2020-01-16 18:09:54,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:54,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:54,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159552361] [2020-01-16 18:09:54,202 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:54,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:54,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:54,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:54,202 INFO L87 Difference]: Start difference. First operand 1580 states and 7060 transitions. Second operand 11 states. [2020-01-16 18:09:54,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:54,389 INFO L93 Difference]: Finished difference Result 2980 states and 11795 transitions. [2020-01-16 18:09:54,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:54,390 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:54,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:54,397 INFO L225 Difference]: With dead ends: 2980 [2020-01-16 18:09:54,398 INFO L226 Difference]: Without dead ends: 2958 [2020-01-16 18:09:54,398 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:09:54,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2958 states. [2020-01-16 18:09:54,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2958 to 1575. [2020-01-16 18:09:54,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:09:54,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7046 transitions. [2020-01-16 18:09:54,464 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7046 transitions. Word has length 28 [2020-01-16 18:09:54,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:54,465 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7046 transitions. [2020-01-16 18:09:54,465 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:54,465 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7046 transitions. [2020-01-16 18:09:54,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:54,467 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:54,467 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:09:54,467 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 18:09:54,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:54,467 INFO L82 PathProgramCache]: Analyzing trace with hash -75378140, now seen corresponding path program 521 times [2020-01-16 18:09:54,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:54,467 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876737248] [2020-01-16 18:09:54,467 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:54,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:54,997 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 18:09:54,997 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876737248] [2020-01-16 18:09:54,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:54,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:54,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331420199] [2020-01-16 18:09:54,998 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:54,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:54,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:54,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:54,998 INFO L87 Difference]: Start difference. First operand 1575 states and 7046 transitions. Second operand 11 states. [2020-01-16 18:09:55,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:55,180 INFO L93 Difference]: Finished difference Result 2986 states and 11809 transitions. [2020-01-16 18:09:55,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:55,181 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:55,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:55,187 INFO L225 Difference]: With dead ends: 2986 [2020-01-16 18:09:55,188 INFO L226 Difference]: Without dead ends: 2968 [2020-01-16 18:09:55,188 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:09:55,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2968 states. [2020-01-16 18:09:55,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2968 to 1582. [2020-01-16 18:09:55,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 18:09:55,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7059 transitions. [2020-01-16 18:09:55,254 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7059 transitions. Word has length 28 [2020-01-16 18:09:55,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:55,255 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7059 transitions. [2020-01-16 18:09:55,255 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:55,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7059 transitions. [2020-01-16 18:09:55,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:55,257 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:55,257 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:09:55,257 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 18:09:55,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:55,257 INFO L82 PathProgramCache]: Analyzing trace with hash -646832946, now seen corresponding path program 522 times [2020-01-16 18:09:55,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:55,257 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630849331] [2020-01-16 18:09:55,258 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:55,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:55,784 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 18:09:55,785 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630849331] [2020-01-16 18:09:55,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:55,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:55,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807413882] [2020-01-16 18:09:55,785 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:55,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:55,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:55,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:55,786 INFO L87 Difference]: Start difference. First operand 1582 states and 7059 transitions. Second operand 11 states. [2020-01-16 18:09:56,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:56,002 INFO L93 Difference]: Finished difference Result 2985 states and 11800 transitions. [2020-01-16 18:09:56,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:56,003 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:56,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:56,010 INFO L225 Difference]: With dead ends: 2985 [2020-01-16 18:09:56,011 INFO L226 Difference]: Without dead ends: 2956 [2020-01-16 18:09:56,011 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:09:56,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2020-01-16 18:09:56,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 1570. [2020-01-16 18:09:56,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:09:56,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7032 transitions. [2020-01-16 18:09:56,078 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7032 transitions. Word has length 28 [2020-01-16 18:09:56,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:56,078 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7032 transitions. [2020-01-16 18:09:56,079 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:56,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7032 transitions. [2020-01-16 18:09:56,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:56,081 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:56,081 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:09:56,081 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 18:09:56,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:56,081 INFO L82 PathProgramCache]: Analyzing trace with hash -801700206, now seen corresponding path program 523 times [2020-01-16 18:09:56,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:56,081 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501238035] [2020-01-16 18:09:56,081 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:56,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:56,622 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 18:09:56,622 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501238035] [2020-01-16 18:09:56,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:56,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:56,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19788032] [2020-01-16 18:09:56,623 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:56,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:56,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:56,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:56,623 INFO L87 Difference]: Start difference. First operand 1570 states and 7032 transitions. Second operand 11 states. [2020-01-16 18:09:56,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:56,767 INFO L93 Difference]: Finished difference Result 3012 states and 11871 transitions. [2020-01-16 18:09:56,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:56,768 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:56,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:56,775 INFO L225 Difference]: With dead ends: 3012 [2020-01-16 18:09:56,776 INFO L226 Difference]: Without dead ends: 2992 [2020-01-16 18:09:56,776 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 18:09:56,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2992 states. [2020-01-16 18:09:56,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2992 to 1590. [2020-01-16 18:09:56,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1590 states. [2020-01-16 18:09:56,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 7082 transitions. [2020-01-16 18:09:56,843 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 7082 transitions. Word has length 28 [2020-01-16 18:09:56,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:56,843 INFO L478 AbstractCegarLoop]: Abstraction has 1590 states and 7082 transitions. [2020-01-16 18:09:56,843 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:56,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 7082 transitions. [2020-01-16 18:09:56,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:56,845 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:56,845 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 18:09:56,845 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 18:09:56,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:56,846 INFO L82 PathProgramCache]: Analyzing trace with hash -56997708, now seen corresponding path program 524 times [2020-01-16 18:09:56,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:56,846 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090394794] [2020-01-16 18:09:56,846 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:56,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:57,390 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 18:09:57,390 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090394794] [2020-01-16 18:09:57,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:57,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:57,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090580162] [2020-01-16 18:09:57,390 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:57,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:57,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:57,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:57,391 INFO L87 Difference]: Start difference. First operand 1590 states and 7082 transitions. Second operand 11 states. [2020-01-16 18:09:57,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:57,567 INFO L93 Difference]: Finished difference Result 3010 states and 11859 transitions. [2020-01-16 18:09:57,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:57,567 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:57,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:57,574 INFO L225 Difference]: With dead ends: 3010 [2020-01-16 18:09:57,574 INFO L226 Difference]: Without dead ends: 2982 [2020-01-16 18:09:57,575 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 18:09:57,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2982 states. [2020-01-16 18:09:57,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2982 to 1580. [2020-01-16 18:09:57,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:09:57,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7056 transitions. [2020-01-16 18:09:57,641 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7056 transitions. Word has length 28 [2020-01-16 18:09:57,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:57,641 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7056 transitions. [2020-01-16 18:09:57,641 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:57,641 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7056 transitions. [2020-01-16 18:09:57,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:57,643 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:57,644 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:09:57,644 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 18:09:57,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:57,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1336930008, now seen corresponding path program 525 times [2020-01-16 18:09:57,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:57,644 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219307454] [2020-01-16 18:09:57,644 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:57,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:58,201 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 18:09:58,201 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219307454] [2020-01-16 18:09:58,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:58,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:58,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76309623] [2020-01-16 18:09:58,202 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:58,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:58,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:58,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:58,202 INFO L87 Difference]: Start difference. First operand 1580 states and 7056 transitions. Second operand 11 states. [2020-01-16 18:09:58,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:58,345 INFO L93 Difference]: Finished difference Result 3009 states and 11856 transitions. [2020-01-16 18:09:58,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:58,345 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:58,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:58,353 INFO L225 Difference]: With dead ends: 3009 [2020-01-16 18:09:58,353 INFO L226 Difference]: Without dead ends: 2989 [2020-01-16 18:09:58,353 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 18:09:58,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2020-01-16 18:09:58,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 1588. [2020-01-16 18:09:58,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1588 states. [2020-01-16 18:09:58,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 7070 transitions. [2020-01-16 18:09:58,420 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 7070 transitions. Word has length 28 [2020-01-16 18:09:58,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:58,420 INFO L478 AbstractCegarLoop]: Abstraction has 1588 states and 7070 transitions. [2020-01-16 18:09:58,420 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:58,420 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 7070 transitions. [2020-01-16 18:09:58,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:58,422 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:58,423 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:09:58,423 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 18:09:58,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:58,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1163682316, now seen corresponding path program 526 times [2020-01-16 18:09:58,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:58,423 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682393190] [2020-01-16 18:09:58,423 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:58,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:58,957 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 18:09:58,957 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682393190] [2020-01-16 18:09:58,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:58,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:58,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849023740] [2020-01-16 18:09:58,958 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:58,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:58,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:58,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:58,958 INFO L87 Difference]: Start difference. First operand 1588 states and 7070 transitions. Second operand 11 states. [2020-01-16 18:09:59,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:59,130 INFO L93 Difference]: Finished difference Result 3006 states and 11843 transitions. [2020-01-16 18:09:59,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:59,130 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:59,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:59,137 INFO L225 Difference]: With dead ends: 3006 [2020-01-16 18:09:59,137 INFO L226 Difference]: Without dead ends: 2981 [2020-01-16 18:09:59,138 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:09:59,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2981 states. [2020-01-16 18:09:59,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2981 to 1580. [2020-01-16 18:09:59,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:09:59,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7048 transitions. [2020-01-16 18:09:59,205 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7048 transitions. Word has length 28 [2020-01-16 18:09:59,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:09:59,205 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7048 transitions. [2020-01-16 18:09:59,205 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:09:59,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7048 transitions. [2020-01-16 18:09:59,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:09:59,207 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:09:59,207 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:09:59,207 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 18:09:59,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:09:59,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1018713448, now seen corresponding path program 527 times [2020-01-16 18:09:59,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:09:59,208 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587792037] [2020-01-16 18:09:59,208 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:09:59,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:09:59,746 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 18:09:59,747 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587792037] [2020-01-16 18:09:59,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:09:59,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:09:59,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418606745] [2020-01-16 18:09:59,747 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:09:59,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:09:59,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:09:59,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:09:59,748 INFO L87 Difference]: Start difference. First operand 1580 states and 7048 transitions. Second operand 11 states. [2020-01-16 18:09:59,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:09:59,928 INFO L93 Difference]: Finished difference Result 3004 states and 11840 transitions. [2020-01-16 18:09:59,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:09:59,928 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:09:59,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:09:59,936 INFO L225 Difference]: With dead ends: 3004 [2020-01-16 18:09:59,936 INFO L226 Difference]: Without dead ends: 2986 [2020-01-16 18:09:59,937 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:09:59,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2986 states. [2020-01-16 18:09:59,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2986 to 1587. [2020-01-16 18:09:59,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1587 states. [2020-01-16 18:10:00,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 7061 transitions. [2020-01-16 18:10:00,003 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 7061 transitions. Word has length 28 [2020-01-16 18:10:00,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:00,003 INFO L478 AbstractCegarLoop]: Abstraction has 1587 states and 7061 transitions. [2020-01-16 18:10:00,003 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:00,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 7061 transitions. [2020-01-16 18:10:00,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:00,006 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:00,006 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:10:00,006 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 18:10:00,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:00,006 INFO L82 PathProgramCache]: Analyzing trace with hash 447258642, now seen corresponding path program 528 times [2020-01-16 18:10:00,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:00,006 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556327937] [2020-01-16 18:10:00,006 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:00,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:00,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:10:00,545 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556327937] [2020-01-16 18:10:00,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:00,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:00,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863885592] [2020-01-16 18:10:00,545 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:00,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:00,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:00,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:00,545 INFO L87 Difference]: Start difference. First operand 1587 states and 7061 transitions. Second operand 11 states. [2020-01-16 18:10:00,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:00,715 INFO L93 Difference]: Finished difference Result 3003 states and 11831 transitions. [2020-01-16 18:10:00,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:00,716 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:00,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:00,722 INFO L225 Difference]: With dead ends: 3003 [2020-01-16 18:10:00,723 INFO L226 Difference]: Without dead ends: 2961 [2020-01-16 18:10:00,723 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:10:00,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2020-01-16 18:10:00,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 1562. [2020-01-16 18:10:00,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1562 states. [2020-01-16 18:10:00,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1562 states to 1562 states and 7010 transitions. [2020-01-16 18:10:00,789 INFO L78 Accepts]: Start accepts. Automaton has 1562 states and 7010 transitions. Word has length 28 [2020-01-16 18:10:00,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:00,789 INFO L478 AbstractCegarLoop]: Abstraction has 1562 states and 7010 transitions. [2020-01-16 18:10:00,789 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:00,789 INFO L276 IsEmpty]: Start isEmpty. Operand 1562 states and 7010 transitions. [2020-01-16 18:10:00,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:00,791 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:00,791 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 18:10:00,792 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 18:10:00,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:00,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1933571164, now seen corresponding path program 529 times [2020-01-16 18:10:00,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:00,792 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109676642] [2020-01-16 18:10:00,792 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:00,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:01,315 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 18:10:01,315 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109676642] [2020-01-16 18:10:01,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:01,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:01,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485626325] [2020-01-16 18:10:01,316 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:01,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:01,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:01,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:01,316 INFO L87 Difference]: Start difference. First operand 1562 states and 7010 transitions. Second operand 11 states. [2020-01-16 18:10:01,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:01,519 INFO L93 Difference]: Finished difference Result 2955 states and 11734 transitions. [2020-01-16 18:10:01,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:01,519 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:01,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:01,526 INFO L225 Difference]: With dead ends: 2955 [2020-01-16 18:10:01,526 INFO L226 Difference]: Without dead ends: 2940 [2020-01-16 18:10:01,526 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 18:10:01,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2940 states. [2020-01-16 18:10:01,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2940 to 1578. [2020-01-16 18:10:01,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:10:01,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7062 transitions. [2020-01-16 18:10:01,593 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7062 transitions. Word has length 28 [2020-01-16 18:10:01,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:01,593 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7062 transitions. [2020-01-16 18:10:01,593 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:01,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7062 transitions. [2020-01-16 18:10:01,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:01,596 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:01,596 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 18:10:01,596 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 18:10:01,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:01,596 INFO L82 PathProgramCache]: Analyzing trace with hash -444166168, now seen corresponding path program 530 times [2020-01-16 18:10:01,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:01,596 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77461017] [2020-01-16 18:10:01,596 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:01,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:02,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:10:02,132 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77461017] [2020-01-16 18:10:02,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:02,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:02,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530760240] [2020-01-16 18:10:02,133 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:02,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:02,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:02,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:02,133 INFO L87 Difference]: Start difference. First operand 1578 states and 7062 transitions. Second operand 11 states. [2020-01-16 18:10:02,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:02,297 INFO L93 Difference]: Finished difference Result 2960 states and 11738 transitions. [2020-01-16 18:10:02,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:02,297 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:02,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:02,305 INFO L225 Difference]: With dead ends: 2960 [2020-01-16 18:10:02,305 INFO L226 Difference]: Without dead ends: 2934 [2020-01-16 18:10:02,305 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:10:02,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2934 states. [2020-01-16 18:10:02,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2934 to 1572. [2020-01-16 18:10:02,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:10:02,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7046 transitions. [2020-01-16 18:10:02,372 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7046 transitions. Word has length 28 [2020-01-16 18:10:02,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:02,372 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7046 transitions. [2020-01-16 18:10:02,372 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:02,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7046 transitions. [2020-01-16 18:10:02,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:02,374 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:02,374 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:10:02,374 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 18:10:02,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:02,375 INFO L82 PathProgramCache]: Analyzing trace with hash 215225372, now seen corresponding path program 531 times [2020-01-16 18:10:02,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:02,375 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822088417] [2020-01-16 18:10:02,375 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:02,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:02,900 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 18:10:02,901 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822088417] [2020-01-16 18:10:02,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:02,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:02,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251819639] [2020-01-16 18:10:02,901 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:02,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:02,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:02,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:02,902 INFO L87 Difference]: Start difference. First operand 1572 states and 7046 transitions. Second operand 11 states. [2020-01-16 18:10:03,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:03,097 INFO L93 Difference]: Finished difference Result 2947 states and 11713 transitions. [2020-01-16 18:10:03,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:03,099 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:03,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:03,105 INFO L225 Difference]: With dead ends: 2947 [2020-01-16 18:10:03,105 INFO L226 Difference]: Without dead ends: 2932 [2020-01-16 18:10:03,106 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:10:03,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2932 states. [2020-01-16 18:10:03,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2932 to 1576. [2020-01-16 18:10:03,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:10:03,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7053 transitions. [2020-01-16 18:10:03,172 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7053 transitions. Word has length 28 [2020-01-16 18:10:03,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:03,172 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7053 transitions. [2020-01-16 18:10:03,172 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:03,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7053 transitions. [2020-01-16 18:10:03,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:03,174 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:03,174 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:10:03,174 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 18:10:03,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:03,175 INFO L82 PathProgramCache]: Analyzing trace with hash 388473064, now seen corresponding path program 532 times [2020-01-16 18:10:03,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:03,175 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320801513] [2020-01-16 18:10:03,175 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:03,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:03,699 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 18:10:03,699 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320801513] [2020-01-16 18:10:03,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:03,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:03,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614322006] [2020-01-16 18:10:03,700 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:03,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:03,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:03,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:03,700 INFO L87 Difference]: Start difference. First operand 1576 states and 7053 transitions. Second operand 11 states. [2020-01-16 18:10:03,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:03,892 INFO L93 Difference]: Finished difference Result 2946 states and 11707 transitions. [2020-01-16 18:10:03,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:03,892 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:03,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:03,900 INFO L225 Difference]: With dead ends: 2946 [2020-01-16 18:10:03,900 INFO L226 Difference]: Without dead ends: 2928 [2020-01-16 18:10:03,900 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 18:10:03,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2020-01-16 18:10:03,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 1572. [2020-01-16 18:10:03,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:10:03,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7042 transitions. [2020-01-16 18:10:03,972 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7042 transitions. Word has length 28 [2020-01-16 18:10:03,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:03,972 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7042 transitions. [2020-01-16 18:10:03,972 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:03,972 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7042 transitions. [2020-01-16 18:10:03,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:03,975 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:03,975 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 18:10:03,975 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 18:10:03,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:03,975 INFO L82 PathProgramCache]: Analyzing trace with hash 631544988, now seen corresponding path program 533 times [2020-01-16 18:10:03,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:03,976 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396156819] [2020-01-16 18:10:03,976 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:03,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:04,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:10:04,492 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396156819] [2020-01-16 18:10:04,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:04,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:04,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346946400] [2020-01-16 18:10:04,493 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:04,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:04,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:04,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:04,493 INFO L87 Difference]: Start difference. First operand 1572 states and 7042 transitions. Second operand 11 states. [2020-01-16 18:10:04,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:04,653 INFO L93 Difference]: Finished difference Result 2958 states and 11729 transitions. [2020-01-16 18:10:04,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:04,654 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:04,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:04,661 INFO L225 Difference]: With dead ends: 2958 [2020-01-16 18:10:04,661 INFO L226 Difference]: Without dead ends: 2938 [2020-01-16 18:10:04,661 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:10:04,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2020-01-16 18:10:04,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 1577. [2020-01-16 18:10:04,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:10:04,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7050 transitions. [2020-01-16 18:10:04,728 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7050 transitions. Word has length 28 [2020-01-16 18:10:04,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:04,728 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7050 transitions. [2020-01-16 18:10:04,728 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:04,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7050 transitions. [2020-01-16 18:10:04,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:04,731 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:04,732 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:10:04,732 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 18:10:04,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:04,732 INFO L82 PathProgramCache]: Analyzing trace with hash -684612316, now seen corresponding path program 534 times [2020-01-16 18:10:04,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:04,732 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109672031] [2020-01-16 18:10:04,732 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:04,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:05,244 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 18:10:05,245 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109672031] [2020-01-16 18:10:05,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:05,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:05,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064185220] [2020-01-16 18:10:05,245 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:05,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:05,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:05,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:05,245 INFO L87 Difference]: Start difference. First operand 1577 states and 7050 transitions. Second operand 11 states. [2020-01-16 18:10:05,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:05,428 INFO L93 Difference]: Finished difference Result 2952 states and 11713 transitions. [2020-01-16 18:10:05,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:05,429 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:05,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:05,436 INFO L225 Difference]: With dead ends: 2952 [2020-01-16 18:10:05,436 INFO L226 Difference]: Without dead ends: 2928 [2020-01-16 18:10:05,437 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 18:10:05,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2020-01-16 18:10:05,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 1567. [2020-01-16 18:10:05,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:10:05,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7028 transitions. [2020-01-16 18:10:05,504 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7028 transitions. Word has length 28 [2020-01-16 18:10:05,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:05,504 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7028 transitions. [2020-01-16 18:10:05,504 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:05,504 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7028 transitions. [2020-01-16 18:10:05,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:05,506 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:05,506 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 18:10:05,506 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 18:10:05,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:05,506 INFO L82 PathProgramCache]: Analyzing trace with hash -839479576, now seen corresponding path program 535 times [2020-01-16 18:10:05,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:05,507 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566111871] [2020-01-16 18:10:05,507 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:05,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:06,023 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 18:10:06,024 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566111871] [2020-01-16 18:10:06,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:06,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:06,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019124360] [2020-01-16 18:10:06,024 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:06,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:06,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:06,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:06,024 INFO L87 Difference]: Start difference. First operand 1567 states and 7028 transitions. Second operand 11 states. [2020-01-16 18:10:06,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:06,224 INFO L93 Difference]: Finished difference Result 2963 states and 11751 transitions. [2020-01-16 18:10:06,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:06,224 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:06,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:06,232 INFO L225 Difference]: With dead ends: 2963 [2020-01-16 18:10:06,232 INFO L226 Difference]: Without dead ends: 2948 [2020-01-16 18:10:06,232 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:10:06,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2948 states. [2020-01-16 18:10:06,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2948 to 1579. [2020-01-16 18:10:06,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:10:06,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7061 transitions. [2020-01-16 18:10:06,299 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7061 transitions. Word has length 28 [2020-01-16 18:10:06,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:06,299 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7061 transitions. [2020-01-16 18:10:06,299 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:06,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7061 transitions. [2020-01-16 18:10:06,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:06,302 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:06,302 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 18:10:06,302 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 18:10:06,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:06,302 INFO L82 PathProgramCache]: Analyzing trace with hash 649925420, now seen corresponding path program 536 times [2020-01-16 18:10:06,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:06,302 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820838199] [2020-01-16 18:10:06,303 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:06,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:06,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:10:06,834 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820838199] [2020-01-16 18:10:06,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:06,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:06,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711302470] [2020-01-16 18:10:06,835 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:06,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:06,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:06,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:06,835 INFO L87 Difference]: Start difference. First operand 1579 states and 7061 transitions. Second operand 11 states. [2020-01-16 18:10:07,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:07,029 INFO L93 Difference]: Finished difference Result 2968 states and 11755 transitions. [2020-01-16 18:10:07,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:07,030 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:07,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:07,037 INFO L225 Difference]: With dead ends: 2968 [2020-01-16 18:10:07,037 INFO L226 Difference]: Without dead ends: 2942 [2020-01-16 18:10:07,038 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 18:10:07,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2020-01-16 18:10:07,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 1573. [2020-01-16 18:10:07,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:10:07,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7044 transitions. [2020-01-16 18:10:07,104 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7044 transitions. Word has length 28 [2020-01-16 18:10:07,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:07,104 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7044 transitions. [2020-01-16 18:10:07,104 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:07,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7044 transitions. [2020-01-16 18:10:07,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:07,107 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:07,107 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 18:10:07,107 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 18:10:07,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:07,107 INFO L82 PathProgramCache]: Analyzing trace with hash 236231580, now seen corresponding path program 537 times [2020-01-16 18:10:07,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:07,107 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675103098] [2020-01-16 18:10:07,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:07,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:07,622 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 18:10:07,622 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675103098] [2020-01-16 18:10:07,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:07,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:07,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848590900] [2020-01-16 18:10:07,623 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:07,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:07,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:07,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:07,623 INFO L87 Difference]: Start difference. First operand 1573 states and 7044 transitions. Second operand 11 states. [2020-01-16 18:10:07,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:07,862 INFO L93 Difference]: Finished difference Result 2959 states and 11738 transitions. [2020-01-16 18:10:07,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:07,862 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:07,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:07,869 INFO L225 Difference]: With dead ends: 2959 [2020-01-16 18:10:07,869 INFO L226 Difference]: Without dead ends: 2944 [2020-01-16 18:10:07,869 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 18:10:07,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2944 states. [2020-01-16 18:10:07,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2944 to 1578. [2020-01-16 18:10:07,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:10:07,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7053 transitions. [2020-01-16 18:10:07,937 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7053 transitions. Word has length 28 [2020-01-16 18:10:07,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:07,938 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7053 transitions. [2020-01-16 18:10:07,938 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:07,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7053 transitions. [2020-01-16 18:10:07,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:07,940 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:07,940 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 18:10:07,940 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 18:10:07,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:07,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1898884268, now seen corresponding path program 538 times [2020-01-16 18:10:07,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:07,941 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188075091] [2020-01-16 18:10:07,941 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:07,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:08,450 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 18:10:08,450 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188075091] [2020-01-16 18:10:08,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:08,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:08,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105405354] [2020-01-16 18:10:08,451 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:08,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:08,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:08,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:08,451 INFO L87 Difference]: Start difference. First operand 1578 states and 7053 transitions. Second operand 11 states. [2020-01-16 18:10:08,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:08,671 INFO L93 Difference]: Finished difference Result 2961 states and 11737 transitions. [2020-01-16 18:10:08,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:08,672 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:08,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:08,679 INFO L225 Difference]: With dead ends: 2961 [2020-01-16 18:10:08,680 INFO L226 Difference]: Without dead ends: 2939 [2020-01-16 18:10:08,680 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:10:08,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2939 states. [2020-01-16 18:10:08,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2939 to 1573. [2020-01-16 18:10:08,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:10:08,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7039 transitions. [2020-01-16 18:10:08,748 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7039 transitions. Word has length 28 [2020-01-16 18:10:08,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:08,748 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7039 transitions. [2020-01-16 18:10:08,748 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:08,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7039 transitions. [2020-01-16 18:10:08,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:08,751 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:08,751 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:10:08,751 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 18:10:08,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:08,751 INFO L82 PathProgramCache]: Analyzing trace with hash 652551196, now seen corresponding path program 539 times [2020-01-16 18:10:08,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:08,751 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245059371] [2020-01-16 18:10:08,751 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:08,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:09,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:10:09,273 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245059371] [2020-01-16 18:10:09,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:09,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:09,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821073903] [2020-01-16 18:10:09,274 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:09,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:09,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:09,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:09,274 INFO L87 Difference]: Start difference. First operand 1573 states and 7039 transitions. Second operand 11 states. [2020-01-16 18:10:09,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:09,422 INFO L93 Difference]: Finished difference Result 2972 states and 11759 transitions. [2020-01-16 18:10:09,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:09,423 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:09,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:09,430 INFO L225 Difference]: With dead ends: 2972 [2020-01-16 18:10:09,430 INFO L226 Difference]: Without dead ends: 2952 [2020-01-16 18:10:09,430 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:10:09,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2020-01-16 18:10:09,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 1581. [2020-01-16 18:10:09,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:10:09,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7053 transitions. [2020-01-16 18:10:09,499 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7053 transitions. Word has length 28 [2020-01-16 18:10:09,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:09,499 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7053 transitions. [2020-01-16 18:10:09,499 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:09,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7053 transitions. [2020-01-16 18:10:09,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:09,501 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:09,501 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:10:09,502 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 18:10:09,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:09,502 INFO L82 PathProgramCache]: Analyzing trace with hash 825798888, now seen corresponding path program 540 times [2020-01-16 18:10:09,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:09,502 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022444545] [2020-01-16 18:10:09,502 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:09,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:10,024 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 18:10:10,024 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022444545] [2020-01-16 18:10:10,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:10,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:10,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596127037] [2020-01-16 18:10:10,025 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:10,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:10,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:10,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:10,025 INFO L87 Difference]: Start difference. First operand 1581 states and 7053 transitions. Second operand 11 states. [2020-01-16 18:10:10,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:10,233 INFO L93 Difference]: Finished difference Result 2969 states and 11746 transitions. [2020-01-16 18:10:10,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:10,233 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:10,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:10,241 INFO L225 Difference]: With dead ends: 2969 [2020-01-16 18:10:10,241 INFO L226 Difference]: Without dead ends: 2938 [2020-01-16 18:10:10,241 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:10:10,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2020-01-16 18:10:10,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 1567. [2020-01-16 18:10:10,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:10:10,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7023 transitions. [2020-01-16 18:10:10,310 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7023 transitions. Word has length 28 [2020-01-16 18:10:10,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:10,310 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7023 transitions. [2020-01-16 18:10:10,310 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:10,310 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7023 transitions. [2020-01-16 18:10:10,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:10,313 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:10,313 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 18:10:10,313 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 18:10:10,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:10,313 INFO L82 PathProgramCache]: Analyzing trace with hash -797467160, now seen corresponding path program 541 times [2020-01-16 18:10:10,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:10,313 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023074891] [2020-01-16 18:10:10,313 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:10,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:10,833 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 18:10:10,833 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023074891] [2020-01-16 18:10:10,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:10,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:10,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380392690] [2020-01-16 18:10:10,833 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:10,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:10,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:10,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:10,834 INFO L87 Difference]: Start difference. First operand 1567 states and 7023 transitions. Second operand 11 states. [2020-01-16 18:10:11,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:11,045 INFO L93 Difference]: Finished difference Result 2941 states and 11696 transitions. [2020-01-16 18:10:11,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:11,046 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:11,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:11,053 INFO L225 Difference]: With dead ends: 2941 [2020-01-16 18:10:11,053 INFO L226 Difference]: Without dead ends: 2926 [2020-01-16 18:10:11,054 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 18:10:11,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2020-01-16 18:10:11,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 1575. [2020-01-16 18:10:11,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:10:11,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7045 transitions. [2020-01-16 18:10:11,121 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7045 transitions. Word has length 28 [2020-01-16 18:10:11,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:11,121 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7045 transitions. [2020-01-16 18:10:11,121 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:11,121 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7045 transitions. [2020-01-16 18:10:11,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:11,123 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:11,123 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 18:10:11,123 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 18:10:11,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:11,124 INFO L82 PathProgramCache]: Analyzing trace with hash -624219468, now seen corresponding path program 542 times [2020-01-16 18:10:11,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:11,124 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55673474] [2020-01-16 18:10:11,124 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:11,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:11,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:10:11,635 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55673474] [2020-01-16 18:10:11,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:11,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:11,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158407380] [2020-01-16 18:10:11,635 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:11,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:11,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:11,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:11,636 INFO L87 Difference]: Start difference. First operand 1575 states and 7045 transitions. Second operand 11 states. [2020-01-16 18:10:11,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:11,813 INFO L93 Difference]: Finished difference Result 2940 states and 11690 transitions. [2020-01-16 18:10:11,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:11,814 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:11,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:11,821 INFO L225 Difference]: With dead ends: 2940 [2020-01-16 18:10:11,822 INFO L226 Difference]: Without dead ends: 2922 [2020-01-16 18:10:11,822 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 18:10:11,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2922 states. [2020-01-16 18:10:11,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2922 to 1571. [2020-01-16 18:10:11,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:10:11,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7034 transitions. [2020-01-16 18:10:11,890 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7034 transitions. Word has length 28 [2020-01-16 18:10:11,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:11,890 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7034 transitions. [2020-01-16 18:10:11,890 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:11,890 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7034 transitions. [2020-01-16 18:10:11,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:11,892 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:11,892 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 18:10:11,892 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 18:10:11,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:11,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1870552540, now seen corresponding path program 543 times [2020-01-16 18:10:11,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:11,893 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262333934] [2020-01-16 18:10:11,893 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:11,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:12,403 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 18:10:12,404 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262333934] [2020-01-16 18:10:12,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:12,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:12,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246269611] [2020-01-16 18:10:12,404 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:12,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:12,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:12,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:12,405 INFO L87 Difference]: Start difference. First operand 1571 states and 7034 transitions. Second operand 11 states. [2020-01-16 18:10:12,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:12,587 INFO L93 Difference]: Finished difference Result 2945 states and 11701 transitions. [2020-01-16 18:10:12,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:12,588 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:12,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:12,595 INFO L225 Difference]: With dead ends: 2945 [2020-01-16 18:10:12,595 INFO L226 Difference]: Without dead ends: 2930 [2020-01-16 18:10:12,596 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:10:12,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2020-01-16 18:10:12,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1576. [2020-01-16 18:10:12,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:10:12,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7043 transitions. [2020-01-16 18:10:12,664 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7043 transitions. Word has length 28 [2020-01-16 18:10:12,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:12,664 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7043 transitions. [2020-01-16 18:10:12,664 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:12,664 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7043 transitions. [2020-01-16 18:10:12,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:12,667 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:12,667 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 18:10:12,667 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 18:10:12,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:12,667 INFO L82 PathProgramCache]: Analyzing trace with hash -207899852, now seen corresponding path program 544 times [2020-01-16 18:10:12,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:12,667 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171627770] [2020-01-16 18:10:12,667 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:12,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:13,175 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 18:10:13,175 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171627770] [2020-01-16 18:10:13,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:13,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:13,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833436444] [2020-01-16 18:10:13,176 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:13,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:13,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:13,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:13,176 INFO L87 Difference]: Start difference. First operand 1576 states and 7043 transitions. Second operand 11 states. [2020-01-16 18:10:13,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:13,370 INFO L93 Difference]: Finished difference Result 2947 states and 11700 transitions. [2020-01-16 18:10:13,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:13,370 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:13,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:13,377 INFO L225 Difference]: With dead ends: 2947 [2020-01-16 18:10:13,377 INFO L226 Difference]: Without dead ends: 2925 [2020-01-16 18:10:13,377 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:10:13,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2925 states. [2020-01-16 18:10:13,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2925 to 1571. [2020-01-16 18:10:13,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:10:13,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7030 transitions. [2020-01-16 18:10:13,444 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7030 transitions. Word has length 28 [2020-01-16 18:10:13,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:13,445 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7030 transitions. [2020-01-16 18:10:13,445 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:13,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7030 transitions. [2020-01-16 18:10:13,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:13,447 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:13,447 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:10:13,447 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 18:10:13,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:13,447 INFO L82 PathProgramCache]: Analyzing trace with hash -621593692, now seen corresponding path program 545 times [2020-01-16 18:10:13,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:13,448 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584668850] [2020-01-16 18:10:13,448 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:13,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:13,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:10:13,995 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584668850] [2020-01-16 18:10:13,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:13,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:13,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638170495] [2020-01-16 18:10:13,995 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:13,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:13,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:13,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:13,996 INFO L87 Difference]: Start difference. First operand 1571 states and 7030 transitions. Second operand 11 states. [2020-01-16 18:10:14,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:14,199 INFO L93 Difference]: Finished difference Result 2942 states and 11690 transitions. [2020-01-16 18:10:14,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:14,200 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:14,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:14,207 INFO L225 Difference]: With dead ends: 2942 [2020-01-16 18:10:14,207 INFO L226 Difference]: Without dead ends: 2928 [2020-01-16 18:10:14,208 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 18:10:14,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2020-01-16 18:10:14,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 1575. [2020-01-16 18:10:14,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:10:14,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7037 transitions. [2020-01-16 18:10:14,275 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7037 transitions. Word has length 28 [2020-01-16 18:10:14,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:14,275 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7037 transitions. [2020-01-16 18:10:14,275 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:14,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7037 transitions. [2020-01-16 18:10:14,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:14,277 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:14,277 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:10:14,277 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 18:10:14,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:14,277 INFO L82 PathProgramCache]: Analyzing trace with hash 867811304, now seen corresponding path program 546 times [2020-01-16 18:10:14,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:14,278 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369139131] [2020-01-16 18:10:14,278 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:14,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:14,793 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 18:10:14,793 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369139131] [2020-01-16 18:10:14,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:14,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:14,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727318534] [2020-01-16 18:10:14,794 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:14,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:14,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:14,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:14,794 INFO L87 Difference]: Start difference. First operand 1575 states and 7037 transitions. Second operand 11 states. [2020-01-16 18:10:15,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:15,003 INFO L93 Difference]: Finished difference Result 2945 states and 11692 transitions. [2020-01-16 18:10:15,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:15,003 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:15,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:15,010 INFO L225 Difference]: With dead ends: 2945 [2020-01-16 18:10:15,011 INFO L226 Difference]: Without dead ends: 2920 [2020-01-16 18:10:15,011 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:10:15,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2920 states. [2020-01-16 18:10:15,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2920 to 1567. [2020-01-16 18:10:15,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:10:15,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7019 transitions. [2020-01-16 18:10:15,077 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7019 transitions. Word has length 28 [2020-01-16 18:10:15,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:15,077 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7019 transitions. [2020-01-16 18:10:15,077 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:15,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7019 transitions. [2020-01-16 18:10:15,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:15,080 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:15,080 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 18:10:15,080 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 18:10:15,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:15,080 INFO L82 PathProgramCache]: Analyzing trace with hash 712944044, now seen corresponding path program 547 times [2020-01-16 18:10:15,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:15,080 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506446833] [2020-01-16 18:10:15,080 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:15,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:15,605 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 18:10:15,606 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506446833] [2020-01-16 18:10:15,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:15,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:15,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251041983] [2020-01-16 18:10:15,606 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:15,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:15,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:15,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:15,607 INFO L87 Difference]: Start difference. First operand 1567 states and 7019 transitions. Second operand 11 states. [2020-01-16 18:10:15,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:15,768 INFO L93 Difference]: Finished difference Result 2962 states and 11734 transitions. [2020-01-16 18:10:15,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:15,769 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:15,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:15,776 INFO L225 Difference]: With dead ends: 2962 [2020-01-16 18:10:15,776 INFO L226 Difference]: Without dead ends: 2942 [2020-01-16 18:10:15,776 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 18:10:15,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2020-01-16 18:10:15,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 1577. [2020-01-16 18:10:15,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:10:15,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7045 transitions. [2020-01-16 18:10:15,842 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7045 transitions. Word has length 28 [2020-01-16 18:10:15,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:15,843 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7045 transitions. [2020-01-16 18:10:15,843 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:15,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7045 transitions. [2020-01-16 18:10:15,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:15,845 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:15,845 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 18:10:15,845 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 18:10:15,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:15,845 INFO L82 PathProgramCache]: Analyzing trace with hash -603213260, now seen corresponding path program 548 times [2020-01-16 18:10:15,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:15,845 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958041275] [2020-01-16 18:10:15,846 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:15,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:16,351 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 18:10:16,351 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958041275] [2020-01-16 18:10:16,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:16,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:16,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026950705] [2020-01-16 18:10:16,352 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:16,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:16,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:16,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:16,352 INFO L87 Difference]: Start difference. First operand 1577 states and 7045 transitions. Second operand 11 states. [2020-01-16 18:10:16,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:16,567 INFO L93 Difference]: Finished difference Result 2956 states and 11718 transitions. [2020-01-16 18:10:16,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:16,567 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:16,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:16,574 INFO L225 Difference]: With dead ends: 2956 [2020-01-16 18:10:16,574 INFO L226 Difference]: Without dead ends: 2937 [2020-01-16 18:10:16,575 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 18:10:16,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2020-01-16 18:10:16,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 1572. [2020-01-16 18:10:16,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:10:16,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7032 transitions. [2020-01-16 18:10:16,641 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7032 transitions. Word has length 28 [2020-01-16 18:10:16,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:16,641 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7032 transitions. [2020-01-16 18:10:16,641 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:16,641 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7032 transitions. [2020-01-16 18:10:16,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:16,643 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:16,643 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 18:10:16,643 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 18:10:16,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:16,644 INFO L82 PathProgramCache]: Analyzing trace with hash -360141336, now seen corresponding path program 549 times [2020-01-16 18:10:16,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:16,644 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763893222] [2020-01-16 18:10:16,644 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:16,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:17,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:10:17,166 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763893222] [2020-01-16 18:10:17,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:17,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:17,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413145780] [2020-01-16 18:10:17,166 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:17,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:17,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:17,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:17,167 INFO L87 Difference]: Start difference. First operand 1572 states and 7032 transitions. Second operand 11 states. [2020-01-16 18:10:17,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:17,334 INFO L93 Difference]: Finished difference Result 2968 states and 11744 transitions. [2020-01-16 18:10:17,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:17,335 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:17,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:17,342 INFO L225 Difference]: With dead ends: 2968 [2020-01-16 18:10:17,342 INFO L226 Difference]: Without dead ends: 2948 [2020-01-16 18:10:17,343 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:10:17,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2948 states. [2020-01-16 18:10:17,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2948 to 1580. [2020-01-16 18:10:17,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:10:17,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7046 transitions. [2020-01-16 18:10:17,409 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7046 transitions. Word has length 28 [2020-01-16 18:10:17,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:17,409 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7046 transitions. [2020-01-16 18:10:17,409 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:17,409 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7046 transitions. [2020-01-16 18:10:17,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:17,411 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:17,411 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 18:10:17,411 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 18:10:17,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:17,412 INFO L82 PathProgramCache]: Analyzing trace with hash -186893644, now seen corresponding path program 550 times [2020-01-16 18:10:17,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:17,412 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983148593] [2020-01-16 18:10:17,412 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:17,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:17,936 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 18:10:17,937 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983148593] [2020-01-16 18:10:17,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:17,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:17,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115861393] [2020-01-16 18:10:17,937 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:17,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:17,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:17,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:17,938 INFO L87 Difference]: Start difference. First operand 1580 states and 7046 transitions. Second operand 11 states. [2020-01-16 18:10:18,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:18,198 INFO L93 Difference]: Finished difference Result 2965 states and 11731 transitions. [2020-01-16 18:10:18,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:18,199 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:18,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:18,206 INFO L225 Difference]: With dead ends: 2965 [2020-01-16 18:10:18,207 INFO L226 Difference]: Without dead ends: 2940 [2020-01-16 18:10:18,207 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:10:18,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2940 states. [2020-01-16 18:10:18,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2940 to 1572. [2020-01-16 18:10:18,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:10:18,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7027 transitions. [2020-01-16 18:10:18,273 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7027 transitions. Word has length 28 [2020-01-16 18:10:18,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:18,273 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7027 transitions. [2020-01-16 18:10:18,273 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:18,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7027 transitions. [2020-01-16 18:10:18,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:18,276 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:18,276 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 18:10:18,276 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 18:10:18,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:18,276 INFO L82 PathProgramCache]: Analyzing trace with hash 472497896, now seen corresponding path program 551 times [2020-01-16 18:10:18,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:18,276 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939061263] [2020-01-16 18:10:18,276 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:18,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:18,789 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 18:10:18,790 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939061263] [2020-01-16 18:10:18,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:18,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:18,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117176089] [2020-01-16 18:10:18,790 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:18,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:18,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:18,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:18,790 INFO L87 Difference]: Start difference. First operand 1572 states and 7027 transitions. Second operand 11 states. [2020-01-16 18:10:18,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:18,987 INFO L93 Difference]: Finished difference Result 2952 states and 11706 transitions. [2020-01-16 18:10:18,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:18,987 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:18,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:18,995 INFO L225 Difference]: With dead ends: 2952 [2020-01-16 18:10:18,995 INFO L226 Difference]: Without dead ends: 2938 [2020-01-16 18:10:18,995 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 18:10:19,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2020-01-16 18:10:19,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 1576. [2020-01-16 18:10:19,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:10:19,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7034 transitions. [2020-01-16 18:10:19,062 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7034 transitions. Word has length 28 [2020-01-16 18:10:19,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:19,062 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7034 transitions. [2020-01-16 18:10:19,062 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:19,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7034 transitions. [2020-01-16 18:10:19,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:19,064 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:19,064 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 18:10:19,064 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 18:10:19,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:19,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1961902892, now seen corresponding path program 552 times [2020-01-16 18:10:19,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:19,065 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469387891] [2020-01-16 18:10:19,065 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:19,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:19,580 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 18:10:19,581 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469387891] [2020-01-16 18:10:19,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:19,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:19,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024014083] [2020-01-16 18:10:19,581 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:19,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:19,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:19,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:19,581 INFO L87 Difference]: Start difference. First operand 1576 states and 7034 transitions. Second operand 11 states. [2020-01-16 18:10:19,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:19,843 INFO L93 Difference]: Finished difference Result 2955 states and 11708 transitions. [2020-01-16 18:10:19,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:19,843 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:19,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:19,850 INFO L225 Difference]: With dead ends: 2955 [2020-01-16 18:10:19,850 INFO L226 Difference]: Without dead ends: 2924 [2020-01-16 18:10:19,850 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 18:10:19,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2924 states. [2020-01-16 18:10:19,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2924 to 1562. [2020-01-16 18:10:19,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1562 states. [2020-01-16 18:10:19,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1562 states to 1562 states and 7005 transitions. [2020-01-16 18:10:19,938 INFO L78 Accepts]: Start accepts. Automaton has 1562 states and 7005 transitions. Word has length 28 [2020-01-16 18:10:19,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:19,938 INFO L478 AbstractCegarLoop]: Abstraction has 1562 states and 7005 transitions. [2020-01-16 18:10:19,938 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:19,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1562 states and 7005 transitions. [2020-01-16 18:10:19,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:19,940 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:19,940 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 18:10:19,940 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 18:10:19,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:19,941 INFO L82 PathProgramCache]: Analyzing trace with hash 2966018, now seen corresponding path program 553 times [2020-01-16 18:10:19,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:19,941 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893338868] [2020-01-16 18:10:19,941 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:19,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:20,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:10:20,454 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893338868] [2020-01-16 18:10:20,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:20,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:20,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59266646] [2020-01-16 18:10:20,455 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:20,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:20,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:20,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:20,455 INFO L87 Difference]: Start difference. First operand 1562 states and 7005 transitions. Second operand 11 states. [2020-01-16 18:10:20,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:20,671 INFO L93 Difference]: Finished difference Result 2938 states and 11692 transitions. [2020-01-16 18:10:20,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:20,672 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:20,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:20,680 INFO L225 Difference]: With dead ends: 2938 [2020-01-16 18:10:20,680 INFO L226 Difference]: Without dead ends: 2923 [2020-01-16 18:10:20,680 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:10:20,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2923 states. [2020-01-16 18:10:20,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2923 to 1575. [2020-01-16 18:10:20,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:10:20,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7048 transitions. [2020-01-16 18:10:20,746 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7048 transitions. Word has length 28 [2020-01-16 18:10:20,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:20,746 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7048 transitions. [2020-01-16 18:10:20,746 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:20,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7048 transitions. [2020-01-16 18:10:20,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:20,748 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:20,749 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 18:10:20,749 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 18:10:20,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:20,749 INFO L82 PathProgramCache]: Analyzing trace with hash -2057893784, now seen corresponding path program 554 times [2020-01-16 18:10:20,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:20,749 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97632269] [2020-01-16 18:10:20,749 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:20,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:21,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:10:21,265 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97632269] [2020-01-16 18:10:21,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:21,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:21,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399329174] [2020-01-16 18:10:21,265 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:21,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:21,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:21,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:21,265 INFO L87 Difference]: Start difference. First operand 1575 states and 7048 transitions. Second operand 11 states. [2020-01-16 18:10:21,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:21,527 INFO L93 Difference]: Finished difference Result 2941 states and 11693 transitions. [2020-01-16 18:10:21,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:21,527 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:21,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:21,534 INFO L225 Difference]: With dead ends: 2941 [2020-01-16 18:10:21,534 INFO L226 Difference]: Without dead ends: 2918 [2020-01-16 18:10:21,534 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 18:10:21,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2918 states. [2020-01-16 18:10:21,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2918 to 1570. [2020-01-16 18:10:21,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:10:21,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7035 transitions. [2020-01-16 18:10:21,601 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7035 transitions. Word has length 28 [2020-01-16 18:10:21,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:21,601 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7035 transitions. [2020-01-16 18:10:21,601 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:21,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7035 transitions. [2020-01-16 18:10:21,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:21,603 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:21,603 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 18:10:21,603 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 18:10:21,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:21,603 INFO L82 PathProgramCache]: Analyzing trace with hash 540821596, now seen corresponding path program 555 times [2020-01-16 18:10:21,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:21,604 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873977180] [2020-01-16 18:10:21,604 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:21,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:22,128 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 18:10:22,128 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873977180] [2020-01-16 18:10:22,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:22,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:22,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192183930] [2020-01-16 18:10:22,129 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:22,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:22,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:22,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:22,129 INFO L87 Difference]: Start difference. First operand 1570 states and 7035 transitions. Second operand 11 states. [2020-01-16 18:10:22,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:22,397 INFO L93 Difference]: Finished difference Result 2933 states and 11677 transitions. [2020-01-16 18:10:22,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:22,397 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:22,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:22,405 INFO L225 Difference]: With dead ends: 2933 [2020-01-16 18:10:22,405 INFO L226 Difference]: Without dead ends: 2918 [2020-01-16 18:10:22,405 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:10:22,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2918 states. [2020-01-16 18:10:22,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2918 to 1574. [2020-01-16 18:10:22,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:10:22,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7042 transitions. [2020-01-16 18:10:22,471 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7042 transitions. Word has length 28 [2020-01-16 18:10:22,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:22,471 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7042 transitions. [2020-01-16 18:10:22,471 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:22,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7042 transitions. [2020-01-16 18:10:22,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:22,474 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:22,474 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:10:22,474 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 18:10:22,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:22,474 INFO L82 PathProgramCache]: Analyzing trace with hash 714069288, now seen corresponding path program 556 times [2020-01-16 18:10:22,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:22,474 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539949964] [2020-01-16 18:10:22,474 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:22,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:23,005 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 18:10:23,013 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 18:10:23,013 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539949964] [2020-01-16 18:10:23,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:23,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:23,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374277278] [2020-01-16 18:10:23,014 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:23,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:23,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:23,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:23,014 INFO L87 Difference]: Start difference. First operand 1574 states and 7042 transitions. Second operand 11 states. [2020-01-16 18:10:23,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:23,251 INFO L93 Difference]: Finished difference Result 2932 states and 11671 transitions. [2020-01-16 18:10:23,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:23,252 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:23,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:23,259 INFO L225 Difference]: With dead ends: 2932 [2020-01-16 18:10:23,259 INFO L226 Difference]: Without dead ends: 2914 [2020-01-16 18:10:23,259 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:10:23,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2914 states. [2020-01-16 18:10:23,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2914 to 1570. [2020-01-16 18:10:23,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:10:23,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7031 transitions. [2020-01-16 18:10:23,326 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7031 transitions. Word has length 28 [2020-01-16 18:10:23,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:23,326 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7031 transitions. [2020-01-16 18:10:23,326 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:23,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7031 transitions. [2020-01-16 18:10:23,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:23,328 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:23,328 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:10:23,328 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 18:10:23,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:23,328 INFO L82 PathProgramCache]: Analyzing trace with hash -982182628, now seen corresponding path program 557 times [2020-01-16 18:10:23,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:23,329 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30130115] [2020-01-16 18:10:23,329 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:23,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:23,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:10:23,831 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30130115] [2020-01-16 18:10:23,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:23,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:23,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909929409] [2020-01-16 18:10:23,831 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:23,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:23,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:23,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:23,832 INFO L87 Difference]: Start difference. First operand 1570 states and 7031 transitions. Second operand 11 states. [2020-01-16 18:10:24,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:24,097 INFO L93 Difference]: Finished difference Result 2939 states and 11685 transitions. [2020-01-16 18:10:24,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:24,097 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:24,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:24,104 INFO L225 Difference]: With dead ends: 2939 [2020-01-16 18:10:24,105 INFO L226 Difference]: Without dead ends: 2921 [2020-01-16 18:10:24,105 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:10:24,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2020-01-16 18:10:24,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 1574. [2020-01-16 18:10:24,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:10:24,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7038 transitions. [2020-01-16 18:10:24,173 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7038 transitions. Word has length 28 [2020-01-16 18:10:24,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:24,173 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7038 transitions. [2020-01-16 18:10:24,173 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:24,173 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7038 transitions. [2020-01-16 18:10:24,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:24,175 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:24,176 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 18:10:24,176 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 18:10:24,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:24,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1251924866, now seen corresponding path program 558 times [2020-01-16 18:10:24,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:24,176 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544448024] [2020-01-16 18:10:24,176 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:24,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:24,689 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 18:10:24,695 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 18:10:24,695 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544448024] [2020-01-16 18:10:24,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:24,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:24,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847831150] [2020-01-16 18:10:24,696 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:24,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:24,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:24,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:24,696 INFO L87 Difference]: Start difference. First operand 1574 states and 7038 transitions. Second operand 11 states. [2020-01-16 18:10:24,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:24,961 INFO L93 Difference]: Finished difference Result 2935 states and 11673 transitions. [2020-01-16 18:10:24,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:24,962 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:24,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:24,969 INFO L225 Difference]: With dead ends: 2935 [2020-01-16 18:10:24,970 INFO L226 Difference]: Without dead ends: 2913 [2020-01-16 18:10:24,970 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 18:10:25,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2913 states. [2020-01-16 18:10:25,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2913 to 1566. [2020-01-16 18:10:25,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1566 states. [2020-01-16 18:10:25,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 7020 transitions. [2020-01-16 18:10:25,036 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 7020 transitions. Word has length 28 [2020-01-16 18:10:25,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:25,036 INFO L478 AbstractCegarLoop]: Abstraction has 1566 states and 7020 transitions. [2020-01-16 18:10:25,036 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:25,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 7020 transitions. [2020-01-16 18:10:25,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:25,038 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:25,038 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:10:25,038 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 18:10:25,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:25,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1097057606, now seen corresponding path program 559 times [2020-01-16 18:10:25,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:25,039 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960949965] [2020-01-16 18:10:25,039 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:25,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:25,554 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 18:10:25,555 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960949965] [2020-01-16 18:10:25,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:25,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:25,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054652479] [2020-01-16 18:10:25,555 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:25,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:25,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:25,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:25,556 INFO L87 Difference]: Start difference. First operand 1566 states and 7020 transitions. Second operand 11 states. [2020-01-16 18:10:25,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:25,814 INFO L93 Difference]: Finished difference Result 2946 states and 11710 transitions. [2020-01-16 18:10:25,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:25,815 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:25,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:25,821 INFO L225 Difference]: With dead ends: 2946 [2020-01-16 18:10:25,822 INFO L226 Difference]: Without dead ends: 2931 [2020-01-16 18:10:25,822 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 18:10:25,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2931 states. [2020-01-16 18:10:25,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2931 to 1576. [2020-01-16 18:10:25,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:10:25,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7048 transitions. [2020-01-16 18:10:25,888 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7048 transitions. Word has length 28 [2020-01-16 18:10:25,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:25,888 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7048 transitions. [2020-01-16 18:10:25,888 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:25,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7048 transitions. [2020-01-16 18:10:25,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:25,891 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:25,891 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:10:25,891 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 18:10:25,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:25,891 INFO L82 PathProgramCache]: Analyzing trace with hash -963802196, now seen corresponding path program 560 times [2020-01-16 18:10:25,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:25,891 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282296289] [2020-01-16 18:10:25,891 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:25,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:26,426 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 18:10:26,427 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282296289] [2020-01-16 18:10:26,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:26,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:26,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353956438] [2020-01-16 18:10:26,427 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:26,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:26,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:26,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:26,427 INFO L87 Difference]: Start difference. First operand 1576 states and 7048 transitions. Second operand 11 states. [2020-01-16 18:10:26,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:26,689 INFO L93 Difference]: Finished difference Result 2949 states and 11711 transitions. [2020-01-16 18:10:26,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:26,690 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:26,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:26,697 INFO L225 Difference]: With dead ends: 2949 [2020-01-16 18:10:26,698 INFO L226 Difference]: Without dead ends: 2926 [2020-01-16 18:10:26,698 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:10:26,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2020-01-16 18:10:26,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 1571. [2020-01-16 18:10:26,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:10:26,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7034 transitions. [2020-01-16 18:10:26,764 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7034 transitions. Word has length 28 [2020-01-16 18:10:26,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:26,764 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7034 transitions. [2020-01-16 18:10:26,764 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:26,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7034 transitions. [2020-01-16 18:10:26,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:26,767 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:26,767 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:10:26,767 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 18:10:26,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:26,767 INFO L82 PathProgramCache]: Analyzing trace with hash 561827804, now seen corresponding path program 561 times [2020-01-16 18:10:26,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:26,767 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288127427] [2020-01-16 18:10:26,767 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:26,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:27,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:10:27,286 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288127427] [2020-01-16 18:10:27,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:27,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:27,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743319937] [2020-01-16 18:10:27,287 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:27,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:27,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:27,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:27,287 INFO L87 Difference]: Start difference. First operand 1571 states and 7034 transitions. Second operand 11 states. [2020-01-16 18:10:27,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:27,453 INFO L93 Difference]: Finished difference Result 2945 states and 11703 transitions. [2020-01-16 18:10:27,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:27,453 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:27,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:27,460 INFO L225 Difference]: With dead ends: 2945 [2020-01-16 18:10:27,461 INFO L226 Difference]: Without dead ends: 2930 [2020-01-16 18:10:27,461 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:10:27,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2020-01-16 18:10:27,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1576. [2020-01-16 18:10:27,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:10:27,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7043 transitions. [2020-01-16 18:10:27,527 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7043 transitions. Word has length 28 [2020-01-16 18:10:27,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:27,527 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7043 transitions. [2020-01-16 18:10:27,527 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:27,527 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7043 transitions. [2020-01-16 18:10:27,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:27,530 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:27,530 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 18:10:27,530 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 18:10:27,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:27,530 INFO L82 PathProgramCache]: Analyzing trace with hash -2070486804, now seen corresponding path program 562 times [2020-01-16 18:10:27,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:27,530 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984864417] [2020-01-16 18:10:27,530 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:27,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:28,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:10:28,043 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984864417] [2020-01-16 18:10:28,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:28,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:28,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819414513] [2020-01-16 18:10:28,044 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:28,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:28,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:28,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:28,044 INFO L87 Difference]: Start difference. First operand 1576 states and 7043 transitions. Second operand 11 states. [2020-01-16 18:10:28,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:28,225 INFO L93 Difference]: Finished difference Result 2947 states and 11702 transitions. [2020-01-16 18:10:28,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:28,225 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:28,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:28,232 INFO L225 Difference]: With dead ends: 2947 [2020-01-16 18:10:28,232 INFO L226 Difference]: Without dead ends: 2925 [2020-01-16 18:10:28,233 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 18:10:28,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2925 states. [2020-01-16 18:10:28,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2925 to 1571. [2020-01-16 18:10:28,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:10:28,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7029 transitions. [2020-01-16 18:10:28,300 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7029 transitions. Word has length 28 [2020-01-16 18:10:28,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:28,300 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7029 transitions. [2020-01-16 18:10:28,300 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:28,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7029 transitions. [2020-01-16 18:10:28,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:28,303 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:28,303 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:10:28,303 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 18:10:28,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:28,303 INFO L82 PathProgramCache]: Analyzing trace with hash -961176420, now seen corresponding path program 563 times [2020-01-16 18:10:28,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:28,303 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808412177] [2020-01-16 18:10:28,303 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:28,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:28,825 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 18:10:28,826 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808412177] [2020-01-16 18:10:28,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:28,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:28,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509562698] [2020-01-16 18:10:28,826 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:28,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:28,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:28,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:28,827 INFO L87 Difference]: Start difference. First operand 1571 states and 7029 transitions. Second operand 11 states. [2020-01-16 18:10:28,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:28,995 INFO L93 Difference]: Finished difference Result 2953 states and 11716 transitions. [2020-01-16 18:10:28,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:28,996 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:28,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:29,003 INFO L225 Difference]: With dead ends: 2953 [2020-01-16 18:10:29,003 INFO L226 Difference]: Without dead ends: 2935 [2020-01-16 18:10:29,004 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:10:29,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2935 states. [2020-01-16 18:10:29,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2935 to 1578. [2020-01-16 18:10:29,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:10:29,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7042 transitions. [2020-01-16 18:10:29,070 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7042 transitions. Word has length 28 [2020-01-16 18:10:29,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:29,070 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7042 transitions. [2020-01-16 18:10:29,070 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:29,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7042 transitions. [2020-01-16 18:10:29,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:29,072 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:29,072 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:10:29,072 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 18:10:29,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:29,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1532631226, now seen corresponding path program 564 times [2020-01-16 18:10:29,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:29,073 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610284668] [2020-01-16 18:10:29,073 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:29,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:29,593 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 18:10:29,593 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610284668] [2020-01-16 18:10:29,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:29,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:29,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191458116] [2020-01-16 18:10:29,593 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:29,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:29,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:29,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:29,594 INFO L87 Difference]: Start difference. First operand 1578 states and 7042 transitions. Second operand 11 states. [2020-01-16 18:10:29,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:29,767 INFO L93 Difference]: Finished difference Result 2952 states and 11707 transitions. [2020-01-16 18:10:29,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:29,768 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:29,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:29,775 INFO L225 Difference]: With dead ends: 2952 [2020-01-16 18:10:29,775 INFO L226 Difference]: Without dead ends: 2923 [2020-01-16 18:10:29,776 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 18:10:29,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2923 states. [2020-01-16 18:10:29,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2923 to 1566. [2020-01-16 18:10:29,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1566 states. [2020-01-16 18:10:29,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 7016 transitions. [2020-01-16 18:10:29,843 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 7016 transitions. Word has length 28 [2020-01-16 18:10:29,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:29,843 INFO L478 AbstractCegarLoop]: Abstraction has 1566 states and 7016 transitions. [2020-01-16 18:10:29,843 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:29,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 7016 transitions. [2020-01-16 18:10:29,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:29,845 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:29,845 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 18:10:29,845 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 18:10:29,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:29,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1128566918, now seen corresponding path program 565 times [2020-01-16 18:10:29,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:29,846 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066716353] [2020-01-16 18:10:29,846 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:29,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:30,365 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 18:10:30,365 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066716353] [2020-01-16 18:10:30,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:30,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:30,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36980775] [2020-01-16 18:10:30,366 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:30,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:30,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:30,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:30,366 INFO L87 Difference]: Start difference. First operand 1566 states and 7016 transitions. Second operand 11 states. [2020-01-16 18:10:30,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:30,537 INFO L93 Difference]: Finished difference Result 2932 states and 11671 transitions. [2020-01-16 18:10:30,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:30,537 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:30,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:30,544 INFO L225 Difference]: With dead ends: 2932 [2020-01-16 18:10:30,544 INFO L226 Difference]: Without dead ends: 2917 [2020-01-16 18:10:30,544 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:10:30,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2917 states. [2020-01-16 18:10:30,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2917 to 1574. [2020-01-16 18:10:30,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:10:30,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7038 transitions. [2020-01-16 18:10:30,611 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7038 transitions. Word has length 28 [2020-01-16 18:10:30,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:30,612 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7038 transitions. [2020-01-16 18:10:30,612 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:30,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7038 transitions. [2020-01-16 18:10:30,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:30,614 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:30,614 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 18:10:30,614 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 18:10:30,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:30,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1301814610, now seen corresponding path program 566 times [2020-01-16 18:10:30,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:30,614 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017135598] [2020-01-16 18:10:30,614 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:30,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:31,133 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 18:10:31,133 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017135598] [2020-01-16 18:10:31,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:31,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:31,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489905943] [2020-01-16 18:10:31,134 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:31,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:31,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:31,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:31,134 INFO L87 Difference]: Start difference. First operand 1574 states and 7038 transitions. Second operand 11 states. [2020-01-16 18:10:31,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:31,316 INFO L93 Difference]: Finished difference Result 2931 states and 11665 transitions. [2020-01-16 18:10:31,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:31,317 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:31,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:31,324 INFO L225 Difference]: With dead ends: 2931 [2020-01-16 18:10:31,324 INFO L226 Difference]: Without dead ends: 2913 [2020-01-16 18:10:31,324 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 18:10:31,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2913 states. [2020-01-16 18:10:31,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2913 to 1570. [2020-01-16 18:10:31,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:10:31,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7027 transitions. [2020-01-16 18:10:31,392 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7027 transitions. Word has length 28 [2020-01-16 18:10:31,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:31,392 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7027 transitions. [2020-01-16 18:10:31,392 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:31,392 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7027 transitions. [2020-01-16 18:10:31,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:31,394 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:31,394 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:10:31,394 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 18:10:31,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:31,395 INFO L82 PathProgramCache]: Analyzing trace with hash 55481538, now seen corresponding path program 567 times [2020-01-16 18:10:31,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:31,395 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378883999] [2020-01-16 18:10:31,395 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:31,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:31,924 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 18:10:31,924 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378883999] [2020-01-16 18:10:31,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:31,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:31,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270671291] [2020-01-16 18:10:31,924 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:31,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:31,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:31,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:31,925 INFO L87 Difference]: Start difference. First operand 1570 states and 7027 transitions. Second operand 11 states. [2020-01-16 18:10:32,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:32,091 INFO L93 Difference]: Finished difference Result 2936 states and 11676 transitions. [2020-01-16 18:10:32,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:32,091 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:32,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:32,099 INFO L225 Difference]: With dead ends: 2936 [2020-01-16 18:10:32,099 INFO L226 Difference]: Without dead ends: 2921 [2020-01-16 18:10:32,099 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 18:10:32,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2020-01-16 18:10:32,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 1575. [2020-01-16 18:10:32,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:10:32,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7036 transitions. [2020-01-16 18:10:32,188 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7036 transitions. Word has length 28 [2020-01-16 18:10:32,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:32,188 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7036 transitions. [2020-01-16 18:10:32,188 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:32,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7036 transitions. [2020-01-16 18:10:32,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:32,190 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:32,191 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:10:32,191 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 18:10:32,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:32,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1718134226, now seen corresponding path program 568 times [2020-01-16 18:10:32,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:32,191 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006965838] [2020-01-16 18:10:32,191 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:32,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:32,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:10:32,694 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006965838] [2020-01-16 18:10:32,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:32,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:32,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731202287] [2020-01-16 18:10:32,695 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:32,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:32,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:32,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:32,695 INFO L87 Difference]: Start difference. First operand 1575 states and 7036 transitions. Second operand 11 states. [2020-01-16 18:10:32,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:32,871 INFO L93 Difference]: Finished difference Result 2938 states and 11675 transitions. [2020-01-16 18:10:32,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:32,871 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:32,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:32,878 INFO L225 Difference]: With dead ends: 2938 [2020-01-16 18:10:32,878 INFO L226 Difference]: Without dead ends: 2916 [2020-01-16 18:10:32,879 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 18:10:32,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2020-01-16 18:10:32,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 1570. [2020-01-16 18:10:32,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:10:32,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7023 transitions. [2020-01-16 18:10:32,945 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7023 transitions. Word has length 28 [2020-01-16 18:10:32,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:32,945 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7023 transitions. [2020-01-16 18:10:32,945 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:32,945 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7023 transitions. [2020-01-16 18:10:32,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:32,947 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:32,947 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 18:10:32,947 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 18:10:32,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:32,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1304440386, now seen corresponding path program 569 times [2020-01-16 18:10:32,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:32,948 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915806566] [2020-01-16 18:10:32,948 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:32,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:33,461 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 18:10:33,461 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915806566] [2020-01-16 18:10:33,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:33,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:33,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683162875] [2020-01-16 18:10:33,462 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:33,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:33,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:33,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:33,462 INFO L87 Difference]: Start difference. First operand 1570 states and 7023 transitions. Second operand 11 states. [2020-01-16 18:10:33,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:33,644 INFO L93 Difference]: Finished difference Result 2933 states and 11665 transitions. [2020-01-16 18:10:33,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:33,644 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:33,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:33,652 INFO L225 Difference]: With dead ends: 2933 [2020-01-16 18:10:33,652 INFO L226 Difference]: Without dead ends: 2919 [2020-01-16 18:10:33,653 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:10:33,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2919 states. [2020-01-16 18:10:33,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2919 to 1574. [2020-01-16 18:10:33,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:10:33,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7030 transitions. [2020-01-16 18:10:33,724 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7030 transitions. Word has length 28 [2020-01-16 18:10:33,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:33,724 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7030 transitions. [2020-01-16 18:10:33,724 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:33,724 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7030 transitions. [2020-01-16 18:10:33,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:33,726 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:33,726 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 18:10:33,726 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 18:10:33,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:33,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1501121914, now seen corresponding path program 570 times [2020-01-16 18:10:33,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:33,727 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172314422] [2020-01-16 18:10:33,727 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:33,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:34,244 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 18:10:34,245 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172314422] [2020-01-16 18:10:34,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:34,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:34,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680807179] [2020-01-16 18:10:34,245 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:34,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:34,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:34,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:34,245 INFO L87 Difference]: Start difference. First operand 1574 states and 7030 transitions. Second operand 11 states. [2020-01-16 18:10:34,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:34,430 INFO L93 Difference]: Finished difference Result 2936 states and 11667 transitions. [2020-01-16 18:10:34,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:34,430 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:34,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:34,437 INFO L225 Difference]: With dead ends: 2936 [2020-01-16 18:10:34,438 INFO L226 Difference]: Without dead ends: 2911 [2020-01-16 18:10:34,438 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 18:10:34,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2020-01-16 18:10:34,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 1566. [2020-01-16 18:10:34,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1566 states. [2020-01-16 18:10:34,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 7012 transitions. [2020-01-16 18:10:34,504 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 7012 transitions. Word has length 28 [2020-01-16 18:10:34,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:34,504 INFO L478 AbstractCegarLoop]: Abstraction has 1566 states and 7012 transitions. [2020-01-16 18:10:34,504 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:34,504 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 7012 transitions. [2020-01-16 18:10:34,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:34,506 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:34,506 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 18:10:34,506 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 18:10:34,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:34,507 INFO L82 PathProgramCache]: Analyzing trace with hash -900783572, now seen corresponding path program 571 times [2020-01-16 18:10:34,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:34,507 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500479672] [2020-01-16 18:10:34,507 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:34,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:35,019 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 18:10:35,019 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500479672] [2020-01-16 18:10:35,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:35,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:35,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255891777] [2020-01-16 18:10:35,020 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:35,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:35,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:35,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:35,020 INFO L87 Difference]: Start difference. First operand 1566 states and 7012 transitions. Second operand 11 states. [2020-01-16 18:10:35,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:35,197 INFO L93 Difference]: Finished difference Result 2943 states and 11691 transitions. [2020-01-16 18:10:35,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:35,197 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:35,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:35,204 INFO L225 Difference]: With dead ends: 2943 [2020-01-16 18:10:35,204 INFO L226 Difference]: Without dead ends: 2925 [2020-01-16 18:10:35,204 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:10:35,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2925 states. [2020-01-16 18:10:35,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2925 to 1574. [2020-01-16 18:10:35,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:10:35,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7034 transitions. [2020-01-16 18:10:35,271 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7034 transitions. Word has length 28 [2020-01-16 18:10:35,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:35,271 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7034 transitions. [2020-01-16 18:10:35,271 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:35,271 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7034 transitions. [2020-01-16 18:10:35,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:35,273 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:35,273 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:10:35,273 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 18:10:35,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:35,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1333323922, now seen corresponding path program 572 times [2020-01-16 18:10:35,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:35,274 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945523058] [2020-01-16 18:10:35,274 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:35,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:35,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:10:35,781 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945523058] [2020-01-16 18:10:35,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:35,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:35,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785000372] [2020-01-16 18:10:35,782 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:35,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:35,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:35,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:35,782 INFO L87 Difference]: Start difference. First operand 1574 states and 7034 transitions. Second operand 11 states. [2020-01-16 18:10:35,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:35,953 INFO L93 Difference]: Finished difference Result 2939 states and 11679 transitions. [2020-01-16 18:10:35,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:35,954 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:35,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:35,961 INFO L225 Difference]: With dead ends: 2939 [2020-01-16 18:10:35,961 INFO L226 Difference]: Without dead ends: 2921 [2020-01-16 18:10:35,961 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:10:36,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2020-01-16 18:10:36,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 1570. [2020-01-16 18:10:36,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:10:36,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7023 transitions. [2020-01-16 18:10:36,028 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7023 transitions. Word has length 28 [2020-01-16 18:10:36,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:36,028 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7023 transitions. [2020-01-16 18:10:36,028 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:36,028 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7023 transitions. [2020-01-16 18:10:36,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:36,030 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:36,030 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:10:36,031 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 18:10:36,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:36,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1973868952, now seen corresponding path program 573 times [2020-01-16 18:10:36,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:36,031 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367791326] [2020-01-16 18:10:36,031 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:36,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:36,547 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 18:10:36,547 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367791326] [2020-01-16 18:10:36,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:36,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:36,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938974549] [2020-01-16 18:10:36,548 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:36,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:36,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:36,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:36,548 INFO L87 Difference]: Start difference. First operand 1570 states and 7023 transitions. Second operand 11 states. [2020-01-16 18:10:36,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:36,725 INFO L93 Difference]: Finished difference Result 2949 states and 11702 transitions. [2020-01-16 18:10:36,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:36,725 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:36,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:36,732 INFO L225 Difference]: With dead ends: 2949 [2020-01-16 18:10:36,732 INFO L226 Difference]: Without dead ends: 2931 [2020-01-16 18:10:36,732 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:10:36,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2931 states. [2020-01-16 18:10:36,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2931 to 1577. [2020-01-16 18:10:36,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:10:36,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7036 transitions. [2020-01-16 18:10:36,799 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7036 transitions. Word has length 28 [2020-01-16 18:10:36,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:36,800 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7036 transitions. [2020-01-16 18:10:36,800 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:36,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7036 transitions. [2020-01-16 18:10:36,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:36,802 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:36,802 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 18:10:36,802 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 18:10:36,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:36,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1749643538, now seen corresponding path program 574 times [2020-01-16 18:10:36,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:36,802 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944190815] [2020-01-16 18:10:36,803 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:36,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:37,324 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:10:37,329 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 18:10:37,330 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944190815] [2020-01-16 18:10:37,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:37,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:37,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504964413] [2020-01-16 18:10:37,330 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:37,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:37,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:37,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:37,331 INFO L87 Difference]: Start difference. First operand 1577 states and 7036 transitions. Second operand 11 states. [2020-01-16 18:10:37,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:37,504 INFO L93 Difference]: Finished difference Result 2948 states and 11693 transitions. [2020-01-16 18:10:37,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:37,504 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:37,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:37,512 INFO L225 Difference]: With dead ends: 2948 [2020-01-16 18:10:37,512 INFO L226 Difference]: Without dead ends: 2924 [2020-01-16 18:10:37,512 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 18:10:37,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2924 states. [2020-01-16 18:10:37,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2924 to 1570. [2020-01-16 18:10:37,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:10:37,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7019 transitions. [2020-01-16 18:10:37,578 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7019 transitions. Word has length 28 [2020-01-16 18:10:37,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:37,578 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7019 transitions. [2020-01-16 18:10:37,579 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:37,579 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7019 transitions. [2020-01-16 18:10:37,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:37,581 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:37,581 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 18:10:37,581 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 18:10:37,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:37,581 INFO L82 PathProgramCache]: Analyzing trace with hash 798094120, now seen corresponding path program 575 times [2020-01-16 18:10:37,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:37,581 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702985358] [2020-01-16 18:10:37,581 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:37,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:38,098 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 18:10:38,098 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702985358] [2020-01-16 18:10:38,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:38,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:38,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348913055] [2020-01-16 18:10:38,099 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:38,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:38,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:38,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:38,099 INFO L87 Difference]: Start difference. First operand 1570 states and 7019 transitions. Second operand 11 states. [2020-01-16 18:10:38,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:38,321 INFO L93 Difference]: Finished difference Result 2938 states and 11673 transitions. [2020-01-16 18:10:38,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:38,322 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:38,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:38,329 INFO L225 Difference]: With dead ends: 2938 [2020-01-16 18:10:38,330 INFO L226 Difference]: Without dead ends: 2924 [2020-01-16 18:10:38,330 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:10:38,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2924 states. [2020-01-16 18:10:38,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2924 to 1574. [2020-01-16 18:10:38,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:10:38,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7026 transitions. [2020-01-16 18:10:38,396 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7026 transitions. Word has length 28 [2020-01-16 18:10:38,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:38,396 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7026 transitions. [2020-01-16 18:10:38,396 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:38,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7026 transitions. [2020-01-16 18:10:38,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:38,399 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:38,399 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 18:10:38,399 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 18:10:38,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:38,399 INFO L82 PathProgramCache]: Analyzing trace with hash -2007468180, now seen corresponding path program 576 times [2020-01-16 18:10:38,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:38,399 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158318486] [2020-01-16 18:10:38,399 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:38,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:38,915 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 18:10:38,916 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158318486] [2020-01-16 18:10:38,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:38,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:38,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852257301] [2020-01-16 18:10:38,916 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:38,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:38,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:38,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:38,917 INFO L87 Difference]: Start difference. First operand 1574 states and 7026 transitions. Second operand 11 states. [2020-01-16 18:10:39,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:39,121 INFO L93 Difference]: Finished difference Result 2941 states and 11675 transitions. [2020-01-16 18:10:39,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:39,121 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:39,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:39,128 INFO L225 Difference]: With dead ends: 2941 [2020-01-16 18:10:39,129 INFO L226 Difference]: Without dead ends: 2912 [2020-01-16 18:10:39,129 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:10:39,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2912 states. [2020-01-16 18:10:39,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2912 to 1562. [2020-01-16 18:10:39,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1562 states. [2020-01-16 18:10:39,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1562 states to 1562 states and 7001 transitions. [2020-01-16 18:10:39,195 INFO L78 Accepts]: Start accepts. Automaton has 1562 states and 7001 transitions. Word has length 28 [2020-01-16 18:10:39,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:39,195 INFO L478 AbstractCegarLoop]: Abstraction has 1562 states and 7001 transitions. [2020-01-16 18:10:39,195 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:39,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1562 states and 7001 transitions. [2020-01-16 18:10:39,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:39,197 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:39,197 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:10:39,198 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 18:10:39,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:39,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1070478082, now seen corresponding path program 577 times [2020-01-16 18:10:39,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:39,198 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779718023] [2020-01-16 18:10:39,198 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:39,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:39,744 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 18:10:39,744 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779718023] [2020-01-16 18:10:39,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:39,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:39,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348250267] [2020-01-16 18:10:39,745 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:39,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:39,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:39,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:39,745 INFO L87 Difference]: Start difference. First operand 1562 states and 7001 transitions. Second operand 11 states. [2020-01-16 18:10:39,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:39,943 INFO L93 Difference]: Finished difference Result 2991 states and 11808 transitions. [2020-01-16 18:10:39,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:39,943 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:39,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:39,950 INFO L225 Difference]: With dead ends: 2991 [2020-01-16 18:10:39,950 INFO L226 Difference]: Without dead ends: 2971 [2020-01-16 18:10:39,950 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 18:10:39,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2971 states. [2020-01-16 18:10:40,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2971 to 1585. [2020-01-16 18:10:40,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 18:10:40,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7066 transitions. [2020-01-16 18:10:40,017 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7066 transitions. Word has length 28 [2020-01-16 18:10:40,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:40,017 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7066 transitions. [2020-01-16 18:10:40,017 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:40,017 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7066 transitions. [2020-01-16 18:10:40,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:40,019 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:40,019 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:10:40,020 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 18:10:40,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:40,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1815180580, now seen corresponding path program 578 times [2020-01-16 18:10:40,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:40,020 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148182546] [2020-01-16 18:10:40,020 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:40,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:40,568 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 18:10:40,568 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148182546] [2020-01-16 18:10:40,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:40,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:40,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993288184] [2020-01-16 18:10:40,569 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:40,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:40,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:40,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:40,569 INFO L87 Difference]: Start difference. First operand 1585 states and 7066 transitions. Second operand 11 states. [2020-01-16 18:10:40,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:40,752 INFO L93 Difference]: Finished difference Result 2989 states and 11796 transitions. [2020-01-16 18:10:40,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:40,752 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:40,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:40,760 INFO L225 Difference]: With dead ends: 2989 [2020-01-16 18:10:40,760 INFO L226 Difference]: Without dead ends: 2961 [2020-01-16 18:10:40,760 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 18:10:40,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2020-01-16 18:10:40,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 1575. [2020-01-16 18:10:40,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:10:40,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7043 transitions. [2020-01-16 18:10:40,828 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7043 transitions. Word has length 28 [2020-01-16 18:10:40,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:40,828 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7043 transitions. [2020-01-16 18:10:40,828 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:40,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7043 transitions. [2020-01-16 18:10:40,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:40,830 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:40,830 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:10:40,830 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 18:10:40,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:40,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1608333660, now seen corresponding path program 579 times [2020-01-16 18:10:40,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:40,831 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874957189] [2020-01-16 18:10:40,831 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:40,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:41,349 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 18:10:41,350 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874957189] [2020-01-16 18:10:41,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:41,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:41,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994885907] [2020-01-16 18:10:41,350 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:41,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:41,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:41,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:41,351 INFO L87 Difference]: Start difference. First operand 1575 states and 7043 transitions. Second operand 11 states. [2020-01-16 18:10:41,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:41,481 INFO L93 Difference]: Finished difference Result 2982 states and 11781 transitions. [2020-01-16 18:10:41,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:41,481 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:41,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:41,488 INFO L225 Difference]: With dead ends: 2982 [2020-01-16 18:10:41,489 INFO L226 Difference]: Without dead ends: 2962 [2020-01-16 18:10:41,489 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:10:41,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2962 states. [2020-01-16 18:10:41,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2962 to 1580. [2020-01-16 18:10:41,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:10:41,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7051 transitions. [2020-01-16 18:10:41,556 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7051 transitions. Word has length 28 [2020-01-16 18:10:41,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:41,556 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7051 transitions. [2020-01-16 18:10:41,556 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:41,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7051 transitions. [2020-01-16 18:10:41,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:41,558 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:41,558 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:10:41,558 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 18:10:41,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:41,559 INFO L82 PathProgramCache]: Analyzing trace with hash 292176356, now seen corresponding path program 580 times [2020-01-16 18:10:41,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:41,559 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117291818] [2020-01-16 18:10:41,559 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:41,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:42,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:10:42,072 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117291818] [2020-01-16 18:10:42,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:42,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:42,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605765413] [2020-01-16 18:10:42,073 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:42,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:42,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:42,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:42,073 INFO L87 Difference]: Start difference. First operand 1580 states and 7051 transitions. Second operand 11 states. [2020-01-16 18:10:42,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:42,280 INFO L93 Difference]: Finished difference Result 2976 states and 11765 transitions. [2020-01-16 18:10:42,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:42,281 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:42,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:42,288 INFO L225 Difference]: With dead ends: 2976 [2020-01-16 18:10:42,288 INFO L226 Difference]: Without dead ends: 2957 [2020-01-16 18:10:42,289 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 18:10:42,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2957 states. [2020-01-16 18:10:42,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2957 to 1575. [2020-01-16 18:10:42,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:10:42,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7038 transitions. [2020-01-16 18:10:42,355 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7038 transitions. Word has length 28 [2020-01-16 18:10:42,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:42,355 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7038 transitions. [2020-01-16 18:10:42,355 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:42,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7038 transitions. [2020-01-16 18:10:42,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:42,357 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:42,357 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:10:42,358 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 18:10:42,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:42,358 INFO L82 PathProgramCache]: Analyzing trace with hash -330990180, now seen corresponding path program 581 times [2020-01-16 18:10:42,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:42,358 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622737317] [2020-01-16 18:10:42,358 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:42,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:42,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:10:42,877 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622737317] [2020-01-16 18:10:42,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:42,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:42,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966609828] [2020-01-16 18:10:42,877 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:42,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:42,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:42,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:42,878 INFO L87 Difference]: Start difference. First operand 1575 states and 7038 transitions. Second operand 11 states. [2020-01-16 18:10:43,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:43,058 INFO L93 Difference]: Finished difference Result 2977 states and 11768 transitions. [2020-01-16 18:10:43,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:43,059 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:43,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:43,066 INFO L225 Difference]: With dead ends: 2977 [2020-01-16 18:10:43,066 INFO L226 Difference]: Without dead ends: 2959 [2020-01-16 18:10:43,067 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 18:10:43,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2959 states. [2020-01-16 18:10:43,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2959 to 1579. [2020-01-16 18:10:43,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:10:43,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7045 transitions. [2020-01-16 18:10:43,133 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7045 transitions. Word has length 28 [2020-01-16 18:10:43,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:43,134 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7045 transitions. [2020-01-16 18:10:43,134 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:43,134 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7045 transitions. [2020-01-16 18:10:43,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:43,136 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:43,136 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 18:10:43,136 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 18:10:43,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:43,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1903117314, now seen corresponding path program 582 times [2020-01-16 18:10:43,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:43,136 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269353419] [2020-01-16 18:10:43,137 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:43,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:43,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:10:43,657 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269353419] [2020-01-16 18:10:43,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:43,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:43,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166406670] [2020-01-16 18:10:43,657 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:43,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:43,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:43,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:43,658 INFO L87 Difference]: Start difference. First operand 1579 states and 7045 transitions. Second operand 11 states. [2020-01-16 18:10:43,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:43,854 INFO L93 Difference]: Finished difference Result 2973 states and 11756 transitions. [2020-01-16 18:10:43,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:43,854 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:43,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:43,861 INFO L225 Difference]: With dead ends: 2973 [2020-01-16 18:10:43,861 INFO L226 Difference]: Without dead ends: 2949 [2020-01-16 18:10:43,861 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 18:10:43,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2949 states. [2020-01-16 18:10:43,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2949 to 1569. [2020-01-16 18:10:43,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:10:43,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7023 transitions. [2020-01-16 18:10:43,927 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7023 transitions. Word has length 28 [2020-01-16 18:10:43,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:43,928 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7023 transitions. [2020-01-16 18:10:43,928 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:43,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7023 transitions. [2020-01-16 18:10:43,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:43,930 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:43,930 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:10:43,930 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 18:10:43,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:43,930 INFO L82 PathProgramCache]: Analyzing trace with hash -2130397626, now seen corresponding path program 583 times [2020-01-16 18:10:43,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:43,930 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845011026] [2020-01-16 18:10:43,930 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:43,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:44,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:10:44,508 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845011026] [2020-01-16 18:10:44,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:44,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:44,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077772640] [2020-01-16 18:10:44,508 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:44,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:44,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:44,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:44,509 INFO L87 Difference]: Start difference. First operand 1569 states and 7023 transitions. Second operand 11 states. [2020-01-16 18:10:44,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:44,641 INFO L93 Difference]: Finished difference Result 3004 states and 11839 transitions. [2020-01-16 18:10:44,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:44,642 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:44,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:44,649 INFO L225 Difference]: With dead ends: 3004 [2020-01-16 18:10:44,650 INFO L226 Difference]: Without dead ends: 2984 [2020-01-16 18:10:44,650 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 18:10:44,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2984 states. [2020-01-16 18:10:44,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2984 to 1589. [2020-01-16 18:10:44,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1589 states. [2020-01-16 18:10:44,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 7073 transitions. [2020-01-16 18:10:44,717 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 7073 transitions. Word has length 28 [2020-01-16 18:10:44,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:44,717 INFO L478 AbstractCegarLoop]: Abstraction has 1589 states and 7073 transitions. [2020-01-16 18:10:44,717 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:44,717 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 7073 transitions. [2020-01-16 18:10:44,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:44,719 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:44,719 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 18:10:44,719 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 18:10:44,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:44,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1385695128, now seen corresponding path program 584 times [2020-01-16 18:10:44,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:44,720 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210641065] [2020-01-16 18:10:44,720 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:44,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:45,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:10:45,264 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210641065] [2020-01-16 18:10:45,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:45,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:45,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564355969] [2020-01-16 18:10:45,265 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:45,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:45,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:45,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:45,265 INFO L87 Difference]: Start difference. First operand 1589 states and 7073 transitions. Second operand 11 states. [2020-01-16 18:10:45,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:45,468 INFO L93 Difference]: Finished difference Result 3002 states and 11827 transitions. [2020-01-16 18:10:45,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:45,469 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:45,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:45,476 INFO L225 Difference]: With dead ends: 3002 [2020-01-16 18:10:45,476 INFO L226 Difference]: Without dead ends: 2974 [2020-01-16 18:10:45,477 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 18:10:45,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2974 states. [2020-01-16 18:10:45,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2974 to 1579. [2020-01-16 18:10:45,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:10:45,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7047 transitions. [2020-01-16 18:10:45,543 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7047 transitions. Word has length 28 [2020-01-16 18:10:45,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:45,543 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7047 transitions. [2020-01-16 18:10:45,543 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:45,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7047 transitions. [2020-01-16 18:10:45,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:45,545 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:45,545 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 18:10:45,545 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 18:10:45,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:45,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1629339868, now seen corresponding path program 585 times [2020-01-16 18:10:45,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:45,546 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374432549] [2020-01-16 18:10:45,546 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:45,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:46,086 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 18:10:46,086 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374432549] [2020-01-16 18:10:46,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:46,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:46,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97827286] [2020-01-16 18:10:46,086 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:46,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:46,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:46,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:46,087 INFO L87 Difference]: Start difference. First operand 1579 states and 7047 transitions. Second operand 11 states. [2020-01-16 18:10:46,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:46,223 INFO L93 Difference]: Finished difference Result 3001 states and 11824 transitions. [2020-01-16 18:10:46,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:46,224 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:46,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:46,231 INFO L225 Difference]: With dead ends: 3001 [2020-01-16 18:10:46,232 INFO L226 Difference]: Without dead ends: 2981 [2020-01-16 18:10:46,232 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:10:46,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2981 states. [2020-01-16 18:10:46,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2981 to 1587. [2020-01-16 18:10:46,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1587 states. [2020-01-16 18:10:46,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 7061 transitions. [2020-01-16 18:10:46,301 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 7061 transitions. Word has length 28 [2020-01-16 18:10:46,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:46,301 INFO L478 AbstractCegarLoop]: Abstraction has 1587 states and 7061 transitions. [2020-01-16 18:10:46,301 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:46,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 7061 transitions. [2020-01-16 18:10:46,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:46,304 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:46,304 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:10:46,304 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 18:10:46,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:46,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1802587560, now seen corresponding path program 586 times [2020-01-16 18:10:46,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:46,304 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652104076] [2020-01-16 18:10:46,304 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:46,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:46,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:10:46,837 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652104076] [2020-01-16 18:10:46,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:46,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:46,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55315001] [2020-01-16 18:10:46,838 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:46,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:46,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:46,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:46,838 INFO L87 Difference]: Start difference. First operand 1587 states and 7061 transitions. Second operand 11 states. [2020-01-16 18:10:47,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:47,008 INFO L93 Difference]: Finished difference Result 2998 states and 11811 transitions. [2020-01-16 18:10:47,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:47,009 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:47,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:47,016 INFO L225 Difference]: With dead ends: 2998 [2020-01-16 18:10:47,016 INFO L226 Difference]: Without dead ends: 2973 [2020-01-16 18:10:47,016 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 18:10:47,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2973 states. [2020-01-16 18:10:47,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2973 to 1579. [2020-01-16 18:10:47,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:10:47,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7039 transitions. [2020-01-16 18:10:47,083 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7039 transitions. Word has length 28 [2020-01-16 18:10:47,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:47,083 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7039 transitions. [2020-01-16 18:10:47,083 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:47,083 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7039 transitions. [2020-01-16 18:10:47,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:47,085 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:47,085 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 18:10:47,086 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 18:10:47,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:47,086 INFO L82 PathProgramCache]: Analyzing trace with hash -309983972, now seen corresponding path program 587 times [2020-01-16 18:10:47,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:47,086 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510968413] [2020-01-16 18:10:47,086 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:47,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:47,621 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 18:10:47,622 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510968413] [2020-01-16 18:10:47,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:47,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:47,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66763105] [2020-01-16 18:10:47,622 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:47,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:47,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:47,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:47,623 INFO L87 Difference]: Start difference. First operand 1579 states and 7039 transitions. Second operand 11 states. [2020-01-16 18:10:47,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:47,846 INFO L93 Difference]: Finished difference Result 2996 states and 11808 transitions. [2020-01-16 18:10:47,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:47,846 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:47,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:47,854 INFO L225 Difference]: With dead ends: 2996 [2020-01-16 18:10:47,854 INFO L226 Difference]: Without dead ends: 2978 [2020-01-16 18:10:47,854 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 18:10:47,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2978 states. [2020-01-16 18:10:47,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2978 to 1586. [2020-01-16 18:10:47,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1586 states. [2020-01-16 18:10:47,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 7052 transitions. [2020-01-16 18:10:47,921 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 7052 transitions. Word has length 28 [2020-01-16 18:10:47,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:47,921 INFO L478 AbstractCegarLoop]: Abstraction has 1586 states and 7052 transitions. [2020-01-16 18:10:47,921 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:47,921 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 7052 transitions. [2020-01-16 18:10:47,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:47,923 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:47,923 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 18:10:47,923 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 18:10:47,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:47,923 INFO L82 PathProgramCache]: Analyzing trace with hash -881438778, now seen corresponding path program 588 times [2020-01-16 18:10:47,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:47,924 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880359079] [2020-01-16 18:10:47,924 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:47,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:48,452 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 18:10:48,452 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880359079] [2020-01-16 18:10:48,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:48,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:48,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068573492] [2020-01-16 18:10:48,453 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:48,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:48,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:48,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:48,453 INFO L87 Difference]: Start difference. First operand 1586 states and 7052 transitions. Second operand 11 states. [2020-01-16 18:10:48,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:48,639 INFO L93 Difference]: Finished difference Result 2995 states and 11799 transitions. [2020-01-16 18:10:48,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:48,639 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:48,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:48,647 INFO L225 Difference]: With dead ends: 2995 [2020-01-16 18:10:48,647 INFO L226 Difference]: Without dead ends: 2961 [2020-01-16 18:10:48,647 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:10:48,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2020-01-16 18:10:48,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 1569. [2020-01-16 18:10:48,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:10:48,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7016 transitions. [2020-01-16 18:10:48,716 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7016 transitions. Word has length 28 [2020-01-16 18:10:48,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:48,716 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7016 transitions. [2020-01-16 18:10:48,716 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:48,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7016 transitions. [2020-01-16 18:10:48,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:48,718 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:48,718 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 18:10:48,718 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 18:10:48,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:48,718 INFO L82 PathProgramCache]: Analyzing trace with hash -2098888314, now seen corresponding path program 589 times [2020-01-16 18:10:48,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:48,719 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607534985] [2020-01-16 18:10:48,719 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:48,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:49,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:10:49,249 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607534985] [2020-01-16 18:10:49,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:49,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:49,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616504946] [2020-01-16 18:10:49,249 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:49,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:49,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:49,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:49,250 INFO L87 Difference]: Start difference. First operand 1569 states and 7016 transitions. Second operand 11 states. [2020-01-16 18:10:49,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:49,394 INFO L93 Difference]: Finished difference Result 2978 states and 11766 transitions. [2020-01-16 18:10:49,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:49,394 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:49,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:49,401 INFO L225 Difference]: With dead ends: 2978 [2020-01-16 18:10:49,401 INFO L226 Difference]: Without dead ends: 2958 [2020-01-16 18:10:49,401 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:10:49,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2958 states. [2020-01-16 18:10:49,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2958 to 1579. [2020-01-16 18:10:49,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:10:49,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7042 transitions. [2020-01-16 18:10:49,470 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7042 transitions. Word has length 28 [2020-01-16 18:10:49,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:49,470 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7042 transitions. [2020-01-16 18:10:49,470 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:49,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7042 transitions. [2020-01-16 18:10:49,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:49,473 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:49,473 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 18:10:49,473 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 18:10:49,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:49,473 INFO L82 PathProgramCache]: Analyzing trace with hash 879921678, now seen corresponding path program 590 times [2020-01-16 18:10:49,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:49,473 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220684153] [2020-01-16 18:10:49,473 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:49,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:50,001 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 18:10:50,001 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220684153] [2020-01-16 18:10:50,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:50,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:50,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680430168] [2020-01-16 18:10:50,002 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:50,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:50,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:50,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:50,002 INFO L87 Difference]: Start difference. First operand 1579 states and 7042 transitions. Second operand 11 states. [2020-01-16 18:10:50,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:50,183 INFO L93 Difference]: Finished difference Result 2972 states and 11750 transitions. [2020-01-16 18:10:50,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:50,184 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:50,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:50,191 INFO L225 Difference]: With dead ends: 2972 [2020-01-16 18:10:50,191 INFO L226 Difference]: Without dead ends: 2953 [2020-01-16 18:10:50,192 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:10:50,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2953 states. [2020-01-16 18:10:50,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2953 to 1574. [2020-01-16 18:10:50,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:10:50,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7029 transitions. [2020-01-16 18:10:50,274 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7029 transitions. Word has length 28 [2020-01-16 18:10:50,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:50,274 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7029 transitions. [2020-01-16 18:10:50,274 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:50,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7029 transitions. [2020-01-16 18:10:50,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:50,276 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:50,277 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:10:50,277 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 18:10:50,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:50,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1122993602, now seen corresponding path program 591 times [2020-01-16 18:10:50,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:50,277 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892595288] [2020-01-16 18:10:50,277 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:50,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:50,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:10:50,829 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892595288] [2020-01-16 18:10:50,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:50,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:50,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112003883] [2020-01-16 18:10:50,829 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:50,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:50,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:50,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:50,830 INFO L87 Difference]: Start difference. First operand 1574 states and 7029 transitions. Second operand 11 states. [2020-01-16 18:10:50,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:50,988 INFO L93 Difference]: Finished difference Result 2984 states and 11776 transitions. [2020-01-16 18:10:50,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:50,988 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:50,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:50,996 INFO L225 Difference]: With dead ends: 2984 [2020-01-16 18:10:50,996 INFO L226 Difference]: Without dead ends: 2964 [2020-01-16 18:10:50,998 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 18:10:51,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2964 states. [2020-01-16 18:10:51,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2964 to 1582. [2020-01-16 18:10:51,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 18:10:51,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7043 transitions. [2020-01-16 18:10:51,068 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7043 transitions. Word has length 28 [2020-01-16 18:10:51,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:51,068 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7043 transitions. [2020-01-16 18:10:51,068 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:51,068 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7043 transitions. [2020-01-16 18:10:51,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:51,070 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:51,070 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 18:10:51,070 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 18:10:51,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:51,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1296241294, now seen corresponding path program 592 times [2020-01-16 18:10:51,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:51,071 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961778889] [2020-01-16 18:10:51,071 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:51,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:51,597 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 18:10:51,597 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961778889] [2020-01-16 18:10:51,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:51,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:51,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012465271] [2020-01-16 18:10:51,598 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:51,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:51,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:51,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:51,598 INFO L87 Difference]: Start difference. First operand 1582 states and 7043 transitions. Second operand 11 states. [2020-01-16 18:10:51,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:51,794 INFO L93 Difference]: Finished difference Result 2981 states and 11763 transitions. [2020-01-16 18:10:51,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:51,794 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:51,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:51,801 INFO L225 Difference]: With dead ends: 2981 [2020-01-16 18:10:51,801 INFO L226 Difference]: Without dead ends: 2956 [2020-01-16 18:10:51,801 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 18:10:51,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2020-01-16 18:10:51,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 1574. [2020-01-16 18:10:51,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:10:51,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7024 transitions. [2020-01-16 18:10:51,868 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7024 transitions. Word has length 28 [2020-01-16 18:10:51,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:51,868 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7024 transitions. [2020-01-16 18:10:51,868 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:51,868 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7024 transitions. [2020-01-16 18:10:51,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:51,871 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:51,871 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:10:51,871 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 18:10:51,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:51,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1955632834, now seen corresponding path program 593 times [2020-01-16 18:10:51,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:51,871 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991348071] [2020-01-16 18:10:51,871 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:51,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:52,403 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 18:10:52,403 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991348071] [2020-01-16 18:10:52,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:52,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:52,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765193865] [2020-01-16 18:10:52,404 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:52,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:52,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:52,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:52,404 INFO L87 Difference]: Start difference. First operand 1574 states and 7024 transitions. Second operand 11 states. [2020-01-16 18:10:52,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:52,654 INFO L93 Difference]: Finished difference Result 2968 states and 11738 transitions. [2020-01-16 18:10:52,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:52,655 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:52,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:52,662 INFO L225 Difference]: With dead ends: 2968 [2020-01-16 18:10:52,662 INFO L226 Difference]: Without dead ends: 2954 [2020-01-16 18:10:52,662 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:10:52,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2020-01-16 18:10:52,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 1578. [2020-01-16 18:10:52,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:10:52,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7031 transitions. [2020-01-16 18:10:52,729 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7031 transitions. Word has length 28 [2020-01-16 18:10:52,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:52,729 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7031 transitions. [2020-01-16 18:10:52,729 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:52,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7031 transitions. [2020-01-16 18:10:52,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:52,731 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:52,731 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:10:52,731 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 18:10:52,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:52,732 INFO L82 PathProgramCache]: Analyzing trace with hash -849929466, now seen corresponding path program 594 times [2020-01-16 18:10:52,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:52,732 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973509366] [2020-01-16 18:10:52,732 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:52,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:53,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:10:53,249 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973509366] [2020-01-16 18:10:53,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:53,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:53,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586329399] [2020-01-16 18:10:53,249 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:53,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:53,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:53,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:53,249 INFO L87 Difference]: Start difference. First operand 1578 states and 7031 transitions. Second operand 11 states. [2020-01-16 18:10:53,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:53,448 INFO L93 Difference]: Finished difference Result 2971 states and 11740 transitions. [2020-01-16 18:10:53,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:53,448 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:53,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:53,455 INFO L225 Difference]: With dead ends: 2971 [2020-01-16 18:10:53,456 INFO L226 Difference]: Without dead ends: 2945 [2020-01-16 18:10:53,456 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 18:10:53,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2945 states. [2020-01-16 18:10:53,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2945 to 1569. [2020-01-16 18:10:53,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:10:53,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7011 transitions. [2020-01-16 18:10:53,522 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7011 transitions. Word has length 28 [2020-01-16 18:10:53,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:53,522 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7011 transitions. [2020-01-16 18:10:53,523 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:53,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7011 transitions. [2020-01-16 18:10:53,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:53,525 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:53,525 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:10:53,525 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 18:10:53,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:53,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1343682712, now seen corresponding path program 595 times [2020-01-16 18:10:53,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:53,525 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911602729] [2020-01-16 18:10:53,525 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:53,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:54,036 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 18:10:54,036 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911602729] [2020-01-16 18:10:54,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:54,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:54,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273740690] [2020-01-16 18:10:54,037 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:54,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:54,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:54,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:54,037 INFO L87 Difference]: Start difference. First operand 1569 states and 7011 transitions. Second operand 11 states. [2020-01-16 18:10:54,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:54,246 INFO L93 Difference]: Finished difference Result 2968 states and 11743 transitions. [2020-01-16 18:10:54,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:54,246 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:54,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:54,254 INFO L225 Difference]: With dead ends: 2968 [2020-01-16 18:10:54,254 INFO L226 Difference]: Without dead ends: 2950 [2020-01-16 18:10:54,254 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 18:10:54,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2020-01-16 18:10:54,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 1577. [2020-01-16 18:10:54,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:10:54,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7033 transitions. [2020-01-16 18:10:54,320 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7033 transitions. Word has length 28 [2020-01-16 18:10:54,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:54,320 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7033 transitions. [2020-01-16 18:10:54,320 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:54,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7033 transitions. [2020-01-16 18:10:54,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:54,323 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:54,323 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 18:10:54,323 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 18:10:54,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:54,323 INFO L82 PathProgramCache]: Analyzing trace with hash 890424782, now seen corresponding path program 596 times [2020-01-16 18:10:54,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:54,323 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151776942] [2020-01-16 18:10:54,323 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:54,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:54,831 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 18:10:54,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:10:54,838 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151776942] [2020-01-16 18:10:54,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:54,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:54,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144627262] [2020-01-16 18:10:54,838 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:54,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:54,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:54,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:54,838 INFO L87 Difference]: Start difference. First operand 1577 states and 7033 transitions. Second operand 11 states. [2020-01-16 18:10:55,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:55,028 INFO L93 Difference]: Finished difference Result 2964 states and 11731 transitions. [2020-01-16 18:10:55,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:55,028 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:55,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:55,036 INFO L225 Difference]: With dead ends: 2964 [2020-01-16 18:10:55,036 INFO L226 Difference]: Without dead ends: 2946 [2020-01-16 18:10:55,036 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 18:10:55,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2946 states. [2020-01-16 18:10:55,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2946 to 1573. [2020-01-16 18:10:55,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:10:55,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7022 transitions. [2020-01-16 18:10:55,103 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7022 transitions. Word has length 28 [2020-01-16 18:10:55,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:55,103 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7022 transitions. [2020-01-16 18:10:55,103 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:55,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7022 transitions. [2020-01-16 18:10:55,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:55,105 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:55,105 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 18:10:55,105 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 18:10:55,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:55,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1878199204, now seen corresponding path program 597 times [2020-01-16 18:10:55,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:55,106 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766549613] [2020-01-16 18:10:55,106 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:55,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:55,643 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 18:10:55,643 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766549613] [2020-01-16 18:10:55,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:55,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:55,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584265094] [2020-01-16 18:10:55,644 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:55,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:55,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:55,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:55,644 INFO L87 Difference]: Start difference. First operand 1573 states and 7022 transitions. Second operand 11 states. [2020-01-16 18:10:55,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:55,848 INFO L93 Difference]: Finished difference Result 2974 states and 11754 transitions. [2020-01-16 18:10:55,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:55,849 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:55,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:55,856 INFO L225 Difference]: With dead ends: 2974 [2020-01-16 18:10:55,856 INFO L226 Difference]: Without dead ends: 2956 [2020-01-16 18:10:55,857 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:10:55,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2020-01-16 18:10:55,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 1580. [2020-01-16 18:10:55,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:10:55,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7035 transitions. [2020-01-16 18:10:55,923 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7035 transitions. Word has length 28 [2020-01-16 18:10:55,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:55,923 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7035 transitions. [2020-01-16 18:10:55,923 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:55,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7035 transitions. [2020-01-16 18:10:55,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:55,925 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:55,925 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 18:10:55,925 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 18:10:55,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:55,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1306744398, now seen corresponding path program 598 times [2020-01-16 18:10:55,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:55,926 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730513401] [2020-01-16 18:10:55,926 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:55,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:56,448 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 18:10:56,448 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730513401] [2020-01-16 18:10:56,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:56,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:56,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143432263] [2020-01-16 18:10:56,448 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:56,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:56,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:56,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:56,449 INFO L87 Difference]: Start difference. First operand 1580 states and 7035 transitions. Second operand 11 states. [2020-01-16 18:10:56,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:56,659 INFO L93 Difference]: Finished difference Result 2973 states and 11745 transitions. [2020-01-16 18:10:56,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:56,660 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:56,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:56,667 INFO L225 Difference]: With dead ends: 2973 [2020-01-16 18:10:56,667 INFO L226 Difference]: Without dead ends: 2949 [2020-01-16 18:10:56,667 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 18:10:56,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2949 states. [2020-01-16 18:10:56,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2949 to 1573. [2020-01-16 18:10:56,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:10:56,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7018 transitions. [2020-01-16 18:10:56,734 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7018 transitions. Word has length 28 [2020-01-16 18:10:56,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:56,734 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7018 transitions. [2020-01-16 18:10:56,734 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:56,734 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7018 transitions. [2020-01-16 18:10:56,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:56,736 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:56,737 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:10:56,737 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 18:10:56,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:56,737 INFO L82 PathProgramCache]: Analyzing trace with hash 355194980, now seen corresponding path program 599 times [2020-01-16 18:10:56,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:56,737 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218319526] [2020-01-16 18:10:56,737 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:56,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:57,259 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 18:10:57,259 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218319526] [2020-01-16 18:10:57,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:57,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:57,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021169466] [2020-01-16 18:10:57,259 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:57,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:57,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:57,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:57,260 INFO L87 Difference]: Start difference. First operand 1573 states and 7018 transitions. Second operand 11 states. [2020-01-16 18:10:57,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:57,453 INFO L93 Difference]: Finished difference Result 2963 states and 11725 transitions. [2020-01-16 18:10:57,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:57,453 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:57,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:57,460 INFO L225 Difference]: With dead ends: 2963 [2020-01-16 18:10:57,461 INFO L226 Difference]: Without dead ends: 2949 [2020-01-16 18:10:57,461 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:10:57,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2949 states. [2020-01-16 18:10:57,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2949 to 1577. [2020-01-16 18:10:57,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:10:57,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7025 transitions. [2020-01-16 18:10:57,528 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7025 transitions. Word has length 28 [2020-01-16 18:10:57,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:57,528 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7025 transitions. [2020-01-16 18:10:57,528 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:57,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7025 transitions. [2020-01-16 18:10:57,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:57,530 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:57,530 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 18:10:57,530 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 18:10:57,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:57,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1844599976, now seen corresponding path program 600 times [2020-01-16 18:10:57,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:57,531 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600385716] [2020-01-16 18:10:57,531 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:57,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:58,044 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 18:10:58,044 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600385716] [2020-01-16 18:10:58,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:58,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:58,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48989485] [2020-01-16 18:10:58,045 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:58,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:58,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:58,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:58,045 INFO L87 Difference]: Start difference. First operand 1577 states and 7025 transitions. Second operand 11 states. [2020-01-16 18:10:58,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:58,280 INFO L93 Difference]: Finished difference Result 2966 states and 11727 transitions. [2020-01-16 18:10:58,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:58,281 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:58,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:58,288 INFO L225 Difference]: With dead ends: 2966 [2020-01-16 18:10:58,288 INFO L226 Difference]: Without dead ends: 2927 [2020-01-16 18:10:58,288 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:10:58,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2927 states. [2020-01-16 18:10:58,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2927 to 1555. [2020-01-16 18:10:58,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1555 states. [2020-01-16 18:10:58,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 6981 transitions. [2020-01-16 18:10:58,355 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 6981 transitions. Word has length 28 [2020-01-16 18:10:58,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:58,355 INFO L478 AbstractCegarLoop]: Abstraction has 1555 states and 6981 transitions. [2020-01-16 18:10:58,355 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:58,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 6981 transitions. [2020-01-16 18:10:58,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:58,357 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:58,357 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:10:58,357 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 18:10:58,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:58,358 INFO L82 PathProgramCache]: Analyzing trace with hash -208706742, now seen corresponding path program 601 times [2020-01-16 18:10:58,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:58,358 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794058107] [2020-01-16 18:10:58,358 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:58,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:58,880 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 18:10:58,881 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794058107] [2020-01-16 18:10:58,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:58,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:58,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552522739] [2020-01-16 18:10:58,881 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:58,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:58,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:58,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:58,882 INFO L87 Difference]: Start difference. First operand 1555 states and 6981 transitions. Second operand 11 states. [2020-01-16 18:10:59,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:59,055 INFO L93 Difference]: Finished difference Result 2994 states and 11845 transitions. [2020-01-16 18:10:59,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:59,056 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:59,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:59,062 INFO L225 Difference]: With dead ends: 2994 [2020-01-16 18:10:59,063 INFO L226 Difference]: Without dead ends: 2978 [2020-01-16 18:10:59,063 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 18:10:59,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2978 states. [2020-01-16 18:10:59,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2978 to 1584. [2020-01-16 18:10:59,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1584 states. [2020-01-16 18:10:59,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 7085 transitions. [2020-01-16 18:10:59,130 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 7085 transitions. Word has length 28 [2020-01-16 18:10:59,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:59,130 INFO L478 AbstractCegarLoop]: Abstraction has 1584 states and 7085 transitions. [2020-01-16 18:10:59,130 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:59,130 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 7085 transitions. [2020-01-16 18:10:59,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:59,132 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:59,132 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:10:59,132 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 18:10:59,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:59,132 INFO L82 PathProgramCache]: Analyzing trace with hash 535995756, now seen corresponding path program 602 times [2020-01-16 18:10:59,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:59,133 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570654589] [2020-01-16 18:10:59,133 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:59,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:10:59,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:10:59,662 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570654589] [2020-01-16 18:10:59,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:10:59,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:10:59,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155713661] [2020-01-16 18:10:59,663 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:10:59,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:10:59,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:10:59,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:10:59,663 INFO L87 Difference]: Start difference. First operand 1584 states and 7085 transitions. Second operand 11 states. [2020-01-16 18:10:59,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:10:59,806 INFO L93 Difference]: Finished difference Result 2998 states and 11846 transitions. [2020-01-16 18:10:59,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:10:59,807 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:10:59,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:10:59,814 INFO L225 Difference]: With dead ends: 2998 [2020-01-16 18:10:59,814 INFO L226 Difference]: Without dead ends: 2971 [2020-01-16 18:10:59,815 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 18:10:59,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2971 states. [2020-01-16 18:10:59,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2971 to 1577. [2020-01-16 18:10:59,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:10:59,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7065 transitions. [2020-01-16 18:10:59,881 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7065 transitions. Word has length 28 [2020-01-16 18:10:59,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:10:59,881 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7065 transitions. [2020-01-16 18:10:59,881 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:10:59,881 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7065 transitions. [2020-01-16 18:10:59,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:10:59,884 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:10:59,884 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 18:10:59,884 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 18:10:59,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:10:59,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1402234216, now seen corresponding path program 603 times [2020-01-16 18:10:59,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:10:59,884 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465348345] [2020-01-16 18:10:59,885 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:10:59,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:00,427 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:11:00,434 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 18:11:00,434 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465348345] [2020-01-16 18:11:00,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:00,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:00,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500285856] [2020-01-16 18:11:00,435 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:00,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:00,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:00,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:00,435 INFO L87 Difference]: Start difference. First operand 1577 states and 7065 transitions. Second operand 11 states. [2020-01-16 18:11:00,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:00,621 INFO L93 Difference]: Finished difference Result 2991 states and 11833 transitions. [2020-01-16 18:11:00,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:00,622 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:00,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:00,629 INFO L225 Difference]: With dead ends: 2991 [2020-01-16 18:11:00,629 INFO L226 Difference]: Without dead ends: 2975 [2020-01-16 18:11:00,629 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 18:11:00,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2975 states. [2020-01-16 18:11:00,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2975 to 1583. [2020-01-16 18:11:00,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:11:00,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7076 transitions. [2020-01-16 18:11:00,697 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7076 transitions. Word has length 28 [2020-01-16 18:11:00,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:00,697 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7076 transitions. [2020-01-16 18:11:00,697 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:00,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7076 transitions. [2020-01-16 18:11:00,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:00,699 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:00,700 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:11:00,700 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 18:11:00,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:00,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1403328084, now seen corresponding path program 604 times [2020-01-16 18:11:00,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:00,700 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368406015] [2020-01-16 18:11:00,700 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:00,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:01,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:11:01,226 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368406015] [2020-01-16 18:11:01,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:01,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:01,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757075342] [2020-01-16 18:11:01,227 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:01,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:01,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:01,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:01,227 INFO L87 Difference]: Start difference. First operand 1583 states and 7076 transitions. Second operand 11 states. [2020-01-16 18:11:01,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:01,412 INFO L93 Difference]: Finished difference Result 2993 states and 11831 transitions. [2020-01-16 18:11:01,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:01,412 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:01,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:01,419 INFO L225 Difference]: With dead ends: 2993 [2020-01-16 18:11:01,419 INFO L226 Difference]: Without dead ends: 2969 [2020-01-16 18:11:01,419 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:11:01,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2969 states. [2020-01-16 18:11:01,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2969 to 1577. [2020-01-16 18:11:01,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:11:01,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7059 transitions. [2020-01-16 18:11:01,486 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7059 transitions. Word has length 28 [2020-01-16 18:11:01,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:01,486 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7059 transitions. [2020-01-16 18:11:01,486 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:01,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7059 transitions. [2020-01-16 18:11:01,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:01,488 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:01,488 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 18:11:01,489 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 18:11:01,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:01,489 INFO L82 PathProgramCache]: Analyzing trace with hash -537089624, now seen corresponding path program 605 times [2020-01-16 18:11:01,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:01,489 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776501221] [2020-01-16 18:11:01,489 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:01,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:02,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:11:02,030 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776501221] [2020-01-16 18:11:02,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:02,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:02,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599728975] [2020-01-16 18:11:02,031 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:02,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:02,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:02,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:02,031 INFO L87 Difference]: Start difference. First operand 1577 states and 7059 transitions. Second operand 11 states. [2020-01-16 18:11:02,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:02,173 INFO L93 Difference]: Finished difference Result 3003 states and 11850 transitions. [2020-01-16 18:11:02,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:02,174 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:02,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:02,181 INFO L225 Difference]: With dead ends: 3003 [2020-01-16 18:11:02,181 INFO L226 Difference]: Without dead ends: 2983 [2020-01-16 18:11:02,181 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 18:11:02,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2983 states. [2020-01-16 18:11:02,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2983 to 1587. [2020-01-16 18:11:02,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1587 states. [2020-01-16 18:11:02,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 7076 transitions. [2020-01-16 18:11:02,248 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 7076 transitions. Word has length 28 [2020-01-16 18:11:02,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:02,248 INFO L478 AbstractCegarLoop]: Abstraction has 1587 states and 7076 transitions. [2020-01-16 18:11:02,249 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:02,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 7076 transitions. [2020-01-16 18:11:02,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:02,251 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:02,251 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 18:11:02,251 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 18:11:02,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:02,251 INFO L82 PathProgramCache]: Analyzing trace with hash 207612874, now seen corresponding path program 606 times [2020-01-16 18:11:02,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:02,251 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438042108] [2020-01-16 18:11:02,251 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:02,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:02,809 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:11:02,815 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 18:11:02,816 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438042108] [2020-01-16 18:11:02,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:02,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:02,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52161960] [2020-01-16 18:11:02,816 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:02,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:02,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:02,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:02,817 INFO L87 Difference]: Start difference. First operand 1587 states and 7076 transitions. Second operand 11 states. [2020-01-16 18:11:03,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:03,014 INFO L93 Difference]: Finished difference Result 3001 states and 11838 transitions. [2020-01-16 18:11:03,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:03,015 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:03,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:03,022 INFO L225 Difference]: With dead ends: 3001 [2020-01-16 18:11:03,022 INFO L226 Difference]: Without dead ends: 2965 [2020-01-16 18:11:03,022 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 18:11:03,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2965 states. [2020-01-16 18:11:03,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2965 to 1569. [2020-01-16 18:11:03,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:11:03,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7038 transitions. [2020-01-16 18:11:03,089 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7038 transitions. Word has length 28 [2020-01-16 18:11:03,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:03,089 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7038 transitions. [2020-01-16 18:11:03,089 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:03,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7038 transitions. [2020-01-16 18:11:03,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:03,091 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:03,091 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 18:11:03,092 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 18:11:03,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:03,092 INFO L82 PathProgramCache]: Analyzing trace with hash -715053008, now seen corresponding path program 607 times [2020-01-16 18:11:03,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:03,092 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225198735] [2020-01-16 18:11:03,092 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:03,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:03,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:11:03,614 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225198735] [2020-01-16 18:11:03,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:03,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:03,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766607326] [2020-01-16 18:11:03,614 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:03,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:03,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:03,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:03,615 INFO L87 Difference]: Start difference. First operand 1569 states and 7038 transitions. Second operand 11 states. [2020-01-16 18:11:03,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:03,794 INFO L93 Difference]: Finished difference Result 2980 states and 11802 transitions. [2020-01-16 18:11:03,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:03,795 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:03,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:03,802 INFO L225 Difference]: With dead ends: 2980 [2020-01-16 18:11:03,802 INFO L226 Difference]: Without dead ends: 2964 [2020-01-16 18:11:03,802 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 18:11:03,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2964 states. [2020-01-16 18:11:03,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2964 to 1581. [2020-01-16 18:11:03,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:11:03,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7069 transitions. [2020-01-16 18:11:03,869 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7069 transitions. Word has length 28 [2020-01-16 18:11:03,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:03,869 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7069 transitions. [2020-01-16 18:11:03,869 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:03,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7069 transitions. [2020-01-16 18:11:03,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:03,871 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:03,871 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:11:03,871 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 18:11:03,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:03,872 INFO L82 PathProgramCache]: Analyzing trace with hash 29649490, now seen corresponding path program 608 times [2020-01-16 18:11:03,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:03,872 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829930682] [2020-01-16 18:11:03,872 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:03,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:04,410 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 18:11:04,410 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829930682] [2020-01-16 18:11:04,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:04,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:04,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396926760] [2020-01-16 18:11:04,411 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:04,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:04,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:04,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:04,411 INFO L87 Difference]: Start difference. First operand 1581 states and 7069 transitions. Second operand 11 states. [2020-01-16 18:11:04,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:04,549 INFO L93 Difference]: Finished difference Result 2984 states and 11803 transitions. [2020-01-16 18:11:04,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:04,550 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:04,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:04,557 INFO L225 Difference]: With dead ends: 2984 [2020-01-16 18:11:04,557 INFO L226 Difference]: Without dead ends: 2957 [2020-01-16 18:11:04,557 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:11:04,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2957 states. [2020-01-16 18:11:04,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2957 to 1574. [2020-01-16 18:11:04,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:11:04,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7051 transitions. [2020-01-16 18:11:04,624 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7051 transitions. Word has length 28 [2020-01-16 18:11:04,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:04,624 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7051 transitions. [2020-01-16 18:11:04,625 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:04,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7051 transitions. [2020-01-16 18:11:04,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:04,627 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:04,627 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:11:04,627 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 18:11:04,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:04,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1433743528, now seen corresponding path program 609 times [2020-01-16 18:11:04,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:04,627 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310080192] [2020-01-16 18:11:04,627 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:04,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:05,139 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 18:11:05,139 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310080192] [2020-01-16 18:11:05,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:05,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:05,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626733666] [2020-01-16 18:11:05,140 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:05,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:05,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:05,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:05,140 INFO L87 Difference]: Start difference. First operand 1574 states and 7051 transitions. Second operand 11 states. [2020-01-16 18:11:05,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:05,313 INFO L93 Difference]: Finished difference Result 2971 states and 11778 transitions. [2020-01-16 18:11:05,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:05,313 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:05,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:05,321 INFO L225 Difference]: With dead ends: 2971 [2020-01-16 18:11:05,321 INFO L226 Difference]: Without dead ends: 2955 [2020-01-16 18:11:05,321 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 18:11:05,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2955 states. [2020-01-16 18:11:05,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2955 to 1578. [2020-01-16 18:11:05,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:11:05,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7058 transitions. [2020-01-16 18:11:05,388 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7058 transitions. Word has length 28 [2020-01-16 18:11:05,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:05,388 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7058 transitions. [2020-01-16 18:11:05,388 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:05,388 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7058 transitions. [2020-01-16 18:11:05,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:05,390 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:05,390 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 18:11:05,390 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 18:11:05,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:05,391 INFO L82 PathProgramCache]: Analyzing trace with hash 862288722, now seen corresponding path program 610 times [2020-01-16 18:11:05,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:05,391 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132471966] [2020-01-16 18:11:05,391 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:05,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:05,908 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 18:11:05,909 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132471966] [2020-01-16 18:11:05,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:05,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:05,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497396739] [2020-01-16 18:11:05,909 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:05,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:05,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:05,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:05,910 INFO L87 Difference]: Start difference. First operand 1578 states and 7058 transitions. Second operand 11 states. [2020-01-16 18:11:06,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:06,099 INFO L93 Difference]: Finished difference Result 2969 states and 11770 transitions. [2020-01-16 18:11:06,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:06,100 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:06,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:06,107 INFO L225 Difference]: With dead ends: 2969 [2020-01-16 18:11:06,107 INFO L226 Difference]: Without dead ends: 2951 [2020-01-16 18:11:06,108 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 18:11:06,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2020-01-16 18:11:06,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 1574. [2020-01-16 18:11:06,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:11:06,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7047 transitions. [2020-01-16 18:11:06,176 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7047 transitions. Word has length 28 [2020-01-16 18:11:06,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:06,176 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7047 transitions. [2020-01-16 18:11:06,176 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:06,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7047 transitions. [2020-01-16 18:11:06,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:06,179 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:06,179 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 18:11:06,179 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 18:11:06,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:06,179 INFO L82 PathProgramCache]: Analyzing trace with hash -505580312, now seen corresponding path program 611 times [2020-01-16 18:11:06,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:06,179 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136432735] [2020-01-16 18:11:06,180 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:06,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:06,718 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 18:11:06,719 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136432735] [2020-01-16 18:11:06,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:06,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:06,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451170960] [2020-01-16 18:11:06,719 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:06,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:06,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:06,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:06,719 INFO L87 Difference]: Start difference. First operand 1574 states and 7047 transitions. Second operand 11 states. [2020-01-16 18:11:06,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:06,866 INFO L93 Difference]: Finished difference Result 2980 states and 11790 transitions. [2020-01-16 18:11:06,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:06,867 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:06,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:06,874 INFO L225 Difference]: With dead ends: 2980 [2020-01-16 18:11:06,874 INFO L226 Difference]: Without dead ends: 2960 [2020-01-16 18:11:06,874 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 18:11:06,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2960 states. [2020-01-16 18:11:06,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2960 to 1579. [2020-01-16 18:11:06,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:11:06,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7055 transitions. [2020-01-16 18:11:06,940 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7055 transitions. Word has length 28 [2020-01-16 18:11:06,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:06,941 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7055 transitions. [2020-01-16 18:11:06,941 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:06,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7055 transitions. [2020-01-16 18:11:06,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:06,943 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:06,943 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 18:11:06,943 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 18:11:06,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:06,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1821737616, now seen corresponding path program 612 times [2020-01-16 18:11:06,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:06,944 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108347809] [2020-01-16 18:11:06,944 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:06,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:07,457 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 18:11:07,457 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108347809] [2020-01-16 18:11:07,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:07,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:07,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518988469] [2020-01-16 18:11:07,458 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:07,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:07,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:07,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:07,458 INFO L87 Difference]: Start difference. First operand 1579 states and 7055 transitions. Second operand 11 states. [2020-01-16 18:11:07,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:07,632 INFO L93 Difference]: Finished difference Result 2974 states and 11774 transitions. [2020-01-16 18:11:07,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:07,633 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:07,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:07,640 INFO L225 Difference]: With dead ends: 2974 [2020-01-16 18:11:07,640 INFO L226 Difference]: Without dead ends: 2950 [2020-01-16 18:11:07,640 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 18:11:07,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2020-01-16 18:11:07,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 1569. [2020-01-16 18:11:07,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:11:07,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7033 transitions. [2020-01-16 18:11:07,706 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7033 transitions. Word has length 28 [2020-01-16 18:11:07,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:07,706 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7033 transitions. [2020-01-16 18:11:07,706 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:07,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7033 transitions. [2020-01-16 18:11:07,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:07,709 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:07,709 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:11:07,709 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 18:11:07,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:07,709 INFO L82 PathProgramCache]: Analyzing trace with hash -704549904, now seen corresponding path program 613 times [2020-01-16 18:11:07,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:07,709 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091558048] [2020-01-16 18:11:07,709 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:07,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:08,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:11:08,216 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091558048] [2020-01-16 18:11:08,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:08,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:08,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761692423] [2020-01-16 18:11:08,217 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:08,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:08,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:08,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:08,217 INFO L87 Difference]: Start difference. First operand 1569 states and 7033 transitions. Second operand 11 states. [2020-01-16 18:11:08,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:08,388 INFO L93 Difference]: Finished difference Result 2972 states and 11782 transitions. [2020-01-16 18:11:08,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:08,389 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:08,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:08,396 INFO L225 Difference]: With dead ends: 2972 [2020-01-16 18:11:08,396 INFO L226 Difference]: Without dead ends: 2956 [2020-01-16 18:11:08,396 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 18:11:08,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2020-01-16 18:11:08,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 1579. [2020-01-16 18:11:08,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:11:08,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7059 transitions. [2020-01-16 18:11:08,463 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7059 transitions. Word has length 28 [2020-01-16 18:11:08,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:08,463 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7059 transitions. [2020-01-16 18:11:08,463 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:08,463 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7059 transitions. [2020-01-16 18:11:08,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:08,465 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:08,465 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 18:11:08,465 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 18:11:08,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:08,466 INFO L82 PathProgramCache]: Analyzing trace with hash 784855092, now seen corresponding path program 614 times [2020-01-16 18:11:08,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:08,466 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584706582] [2020-01-16 18:11:08,466 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:08,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:08,998 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:11:09,004 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 18:11:09,004 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584706582] [2020-01-16 18:11:09,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:09,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:09,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042618380] [2020-01-16 18:11:09,005 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:09,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:09,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:09,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:09,005 INFO L87 Difference]: Start difference. First operand 1579 states and 7059 transitions. Second operand 11 states. [2020-01-16 18:11:09,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:09,183 INFO L93 Difference]: Finished difference Result 2974 states and 11780 transitions. [2020-01-16 18:11:09,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:09,183 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:09,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:09,191 INFO L225 Difference]: With dead ends: 2974 [2020-01-16 18:11:09,191 INFO L226 Difference]: Without dead ends: 2950 [2020-01-16 18:11:09,191 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 18:11:09,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2020-01-16 18:11:09,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 1573. [2020-01-16 18:11:09,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:11:09,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7044 transitions. [2020-01-16 18:11:09,258 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7044 transitions. Word has length 28 [2020-01-16 18:11:09,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:09,258 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7044 transitions. [2020-01-16 18:11:09,258 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:09,258 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7044 transitions. [2020-01-16 18:11:09,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:09,260 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:09,260 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:11:09,260 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 18:11:09,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:09,260 INFO L82 PathProgramCache]: Analyzing trace with hash -166694326, now seen corresponding path program 615 times [2020-01-16 18:11:09,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:09,261 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142428062] [2020-01-16 18:11:09,261 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:09,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:09,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:11:09,802 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142428062] [2020-01-16 18:11:09,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:09,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:09,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857539054] [2020-01-16 18:11:09,803 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:09,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:09,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:09,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:09,803 INFO L87 Difference]: Start difference. First operand 1573 states and 7044 transitions. Second operand 11 states. [2020-01-16 18:11:10,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:10,001 INFO L93 Difference]: Finished difference Result 2966 states and 11764 transitions. [2020-01-16 18:11:10,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:10,002 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:10,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:10,009 INFO L225 Difference]: With dead ends: 2966 [2020-01-16 18:11:10,009 INFO L226 Difference]: Without dead ends: 2950 [2020-01-16 18:11:10,009 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 18:11:10,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2020-01-16 18:11:10,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 1577. [2020-01-16 18:11:10,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:11:10,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7051 transitions. [2020-01-16 18:11:10,076 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7051 transitions. Word has length 28 [2020-01-16 18:11:10,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:10,076 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7051 transitions. [2020-01-16 18:11:10,076 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:10,076 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7051 transitions. [2020-01-16 18:11:10,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:10,078 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:10,078 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:11:10,078 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 18:11:10,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:10,079 INFO L82 PathProgramCache]: Analyzing trace with hash -738149132, now seen corresponding path program 616 times [2020-01-16 18:11:10,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:10,079 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772171379] [2020-01-16 18:11:10,079 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:10,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:10,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:11:10,595 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772171379] [2020-01-16 18:11:10,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:10,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:10,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765043717] [2020-01-16 18:11:10,596 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:10,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:10,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:10,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:10,596 INFO L87 Difference]: Start difference. First operand 1577 states and 7051 transitions. Second operand 11 states. [2020-01-16 18:11:10,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:10,817 INFO L93 Difference]: Finished difference Result 2964 states and 11756 transitions. [2020-01-16 18:11:10,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:10,817 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:10,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:10,824 INFO L225 Difference]: With dead ends: 2964 [2020-01-16 18:11:10,824 INFO L226 Difference]: Without dead ends: 2946 [2020-01-16 18:11:10,825 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 18:11:10,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2946 states. [2020-01-16 18:11:10,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2946 to 1573. [2020-01-16 18:11:10,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:11:10,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7040 transitions. [2020-01-16 18:11:10,891 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7040 transitions. Word has length 28 [2020-01-16 18:11:10,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:10,891 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7040 transitions. [2020-01-16 18:11:10,891 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:10,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7040 transitions. [2020-01-16 18:11:10,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:10,894 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:10,894 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:11:10,894 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 18:11:10,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:10,894 INFO L82 PathProgramCache]: Analyzing trace with hash 249625290, now seen corresponding path program 617 times [2020-01-16 18:11:10,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:10,894 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773494884] [2020-01-16 18:11:10,894 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:10,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:11,418 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:11:11,424 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 18:11:11,425 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773494884] [2020-01-16 18:11:11,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:11,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:11,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085360734] [2020-01-16 18:11:11,425 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:11,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:11,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:11,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:11,425 INFO L87 Difference]: Start difference. First operand 1573 states and 7040 transitions. Second operand 11 states. [2020-01-16 18:11:11,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:11,628 INFO L93 Difference]: Finished difference Result 2970 states and 11768 transitions. [2020-01-16 18:11:11,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:11,629 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:11,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:11,636 INFO L225 Difference]: With dead ends: 2970 [2020-01-16 18:11:11,637 INFO L226 Difference]: Without dead ends: 2952 [2020-01-16 18:11:11,637 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 18:11:11,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2020-01-16 18:11:11,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 1577. [2020-01-16 18:11:11,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:11:11,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7047 transitions. [2020-01-16 18:11:11,704 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7047 transitions. Word has length 28 [2020-01-16 18:11:11,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:11,704 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7047 transitions. [2020-01-16 18:11:11,704 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:11,704 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7047 transitions. [2020-01-16 18:11:11,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:11,706 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:11,707 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:11:11,707 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 18:11:11,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:11,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1811234512, now seen corresponding path program 618 times [2020-01-16 18:11:11,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:11,707 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554108074] [2020-01-16 18:11:11,707 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:11,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:12,219 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 18:11:12,219 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554108074] [2020-01-16 18:11:12,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:12,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:12,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746328470] [2020-01-16 18:11:12,220 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:12,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:12,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:12,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:12,220 INFO L87 Difference]: Start difference. First operand 1577 states and 7047 transitions. Second operand 11 states. [2020-01-16 18:11:12,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:12,409 INFO L93 Difference]: Finished difference Result 2966 states and 11756 transitions. [2020-01-16 18:11:12,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:12,409 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:12,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:12,417 INFO L225 Difference]: With dead ends: 2966 [2020-01-16 18:11:12,417 INFO L226 Difference]: Without dead ends: 2944 [2020-01-16 18:11:12,417 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:11:12,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2944 states. [2020-01-16 18:11:12,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2944 to 1569. [2020-01-16 18:11:12,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:11:12,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7029 transitions. [2020-01-16 18:11:12,484 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7029 transitions. Word has length 28 [2020-01-16 18:11:12,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:12,484 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7029 transitions. [2020-01-16 18:11:12,484 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:12,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7029 transitions. [2020-01-16 18:11:12,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:12,486 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:12,486 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:11:12,486 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 18:11:12,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:12,486 INFO L82 PathProgramCache]: Analyzing trace with hash 50655698, now seen corresponding path program 619 times [2020-01-16 18:11:12,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:12,487 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357792368] [2020-01-16 18:11:12,487 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:12,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:13,040 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:11:13,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:11:13,046 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357792368] [2020-01-16 18:11:13,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:13,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:13,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075153555] [2020-01-16 18:11:13,046 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:13,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:13,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:13,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:13,047 INFO L87 Difference]: Start difference. First operand 1569 states and 7029 transitions. Second operand 11 states. [2020-01-16 18:11:13,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:13,207 INFO L93 Difference]: Finished difference Result 2995 states and 11824 transitions. [2020-01-16 18:11:13,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:13,208 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:13,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:13,215 INFO L225 Difference]: With dead ends: 2995 [2020-01-16 18:11:13,215 INFO L226 Difference]: Without dead ends: 2975 [2020-01-16 18:11:13,215 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:11:13,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2975 states. [2020-01-16 18:11:13,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2975 to 1585. [2020-01-16 18:11:13,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 18:11:13,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7066 transitions. [2020-01-16 18:11:13,282 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7066 transitions. Word has length 28 [2020-01-16 18:11:13,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:13,282 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7066 transitions. [2020-01-16 18:11:13,282 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:13,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7066 transitions. [2020-01-16 18:11:13,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:13,284 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:13,284 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 18:11:13,284 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 18:11:13,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:13,284 INFO L82 PathProgramCache]: Analyzing trace with hash 795358196, now seen corresponding path program 620 times [2020-01-16 18:11:13,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:13,285 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961638959] [2020-01-16 18:11:13,285 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:13,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:13,822 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:11:13,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:11:13,828 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961638959] [2020-01-16 18:11:13,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:13,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:13,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800354654] [2020-01-16 18:11:13,829 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:13,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:13,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:13,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:13,829 INFO L87 Difference]: Start difference. First operand 1585 states and 7066 transitions. Second operand 11 states. [2020-01-16 18:11:14,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:14,025 INFO L93 Difference]: Finished difference Result 2993 states and 11812 transitions. [2020-01-16 18:11:14,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:14,025 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:14,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:14,032 INFO L225 Difference]: With dead ends: 2993 [2020-01-16 18:11:14,032 INFO L226 Difference]: Without dead ends: 2965 [2020-01-16 18:11:14,032 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 18:11:14,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2965 states. [2020-01-16 18:11:14,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2965 to 1575. [2020-01-16 18:11:14,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:11:14,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7043 transitions. [2020-01-16 18:11:14,099 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7043 transitions. Word has length 28 [2020-01-16 18:11:14,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:14,099 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7043 transitions. [2020-01-16 18:11:14,099 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:14,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7043 transitions. [2020-01-16 18:11:14,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:14,101 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:14,101 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 18:11:14,101 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 18:11:14,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:14,102 INFO L82 PathProgramCache]: Analyzing trace with hash 588511276, now seen corresponding path program 621 times [2020-01-16 18:11:14,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:14,102 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672109628] [2020-01-16 18:11:14,102 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:14,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:14,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:11:14,629 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672109628] [2020-01-16 18:11:14,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:14,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:14,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105735733] [2020-01-16 18:11:14,630 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:14,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:14,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:14,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:14,630 INFO L87 Difference]: Start difference. First operand 1575 states and 7043 transitions. Second operand 11 states. [2020-01-16 18:11:14,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:14,766 INFO L93 Difference]: Finished difference Result 2986 states and 11797 transitions. [2020-01-16 18:11:14,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:14,766 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:14,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:14,774 INFO L225 Difference]: With dead ends: 2986 [2020-01-16 18:11:14,774 INFO L226 Difference]: Without dead ends: 2966 [2020-01-16 18:11:14,774 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 18:11:14,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2966 states. [2020-01-16 18:11:14,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2966 to 1580. [2020-01-16 18:11:14,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:11:14,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7051 transitions. [2020-01-16 18:11:14,840 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7051 transitions. Word has length 28 [2020-01-16 18:11:14,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:14,841 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7051 transitions. [2020-01-16 18:11:14,841 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:14,841 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7051 transitions. [2020-01-16 18:11:14,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:14,843 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:14,843 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:11:14,843 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 18:11:14,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:14,843 INFO L82 PathProgramCache]: Analyzing trace with hash -727646028, now seen corresponding path program 622 times [2020-01-16 18:11:14,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:14,844 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482756929] [2020-01-16 18:11:14,844 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:14,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:15,385 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 18:11:15,386 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482756929] [2020-01-16 18:11:15,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:15,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:15,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066500195] [2020-01-16 18:11:15,386 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:15,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:15,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:15,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:15,387 INFO L87 Difference]: Start difference. First operand 1580 states and 7051 transitions. Second operand 11 states. [2020-01-16 18:11:15,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:15,555 INFO L93 Difference]: Finished difference Result 2980 states and 11781 transitions. [2020-01-16 18:11:15,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:15,556 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:15,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:15,563 INFO L225 Difference]: With dead ends: 2980 [2020-01-16 18:11:15,563 INFO L226 Difference]: Without dead ends: 2961 [2020-01-16 18:11:15,564 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:11:15,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2020-01-16 18:11:15,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 1575. [2020-01-16 18:11:15,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:11:15,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7038 transitions. [2020-01-16 18:11:15,630 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7038 transitions. Word has length 28 [2020-01-16 18:11:15,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:15,630 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7038 transitions. [2020-01-16 18:11:15,631 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:15,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7038 transitions. [2020-01-16 18:11:15,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:15,633 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:15,633 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 18:11:15,633 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 18:11:15,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:15,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1350812564, now seen corresponding path program 623 times [2020-01-16 18:11:15,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:15,633 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726196664] [2020-01-16 18:11:15,634 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:15,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:16,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:11:16,172 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726196664] [2020-01-16 18:11:16,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:16,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:16,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425293198] [2020-01-16 18:11:16,172 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:16,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:16,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:16,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:16,173 INFO L87 Difference]: Start difference. First operand 1575 states and 7038 transitions. Second operand 11 states. [2020-01-16 18:11:16,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:16,358 INFO L93 Difference]: Finished difference Result 2981 states and 11784 transitions. [2020-01-16 18:11:16,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:16,358 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:16,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:16,366 INFO L225 Difference]: With dead ends: 2981 [2020-01-16 18:11:16,366 INFO L226 Difference]: Without dead ends: 2963 [2020-01-16 18:11:16,367 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 18:11:16,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2963 states. [2020-01-16 18:11:16,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2963 to 1579. [2020-01-16 18:11:16,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:11:16,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7045 transitions. [2020-01-16 18:11:16,439 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7045 transitions. Word has length 28 [2020-01-16 18:11:16,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:16,440 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7045 transitions. [2020-01-16 18:11:16,440 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:16,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7045 transitions. [2020-01-16 18:11:16,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:16,442 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:16,442 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 18:11:16,442 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 18:11:16,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:16,442 INFO L82 PathProgramCache]: Analyzing trace with hash 883294930, now seen corresponding path program 624 times [2020-01-16 18:11:16,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:16,442 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937140161] [2020-01-16 18:11:16,443 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:16,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:16,984 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 18:11:16,984 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937140161] [2020-01-16 18:11:16,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:16,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:16,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206633864] [2020-01-16 18:11:16,985 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:16,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:16,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:16,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:16,985 INFO L87 Difference]: Start difference. First operand 1579 states and 7045 transitions. Second operand 11 states. [2020-01-16 18:11:17,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:17,224 INFO L93 Difference]: Finished difference Result 2977 states and 11772 transitions. [2020-01-16 18:11:17,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:17,225 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:17,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:17,232 INFO L225 Difference]: With dead ends: 2977 [2020-01-16 18:11:17,232 INFO L226 Difference]: Without dead ends: 2947 [2020-01-16 18:11:17,232 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:11:17,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2947 states. [2020-01-16 18:11:17,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2947 to 1563. [2020-01-16 18:11:17,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 18:11:17,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7012 transitions. [2020-01-16 18:11:17,299 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7012 transitions. Word has length 28 [2020-01-16 18:11:17,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:17,299 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7012 transitions. [2020-01-16 18:11:17,299 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:17,299 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7012 transitions. [2020-01-16 18:11:17,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:17,302 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:17,302 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 18:11:17,302 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 18:11:17,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:17,302 INFO L82 PathProgramCache]: Analyzing trace with hash -651605882, now seen corresponding path program 625 times [2020-01-16 18:11:17,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:17,302 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658025568] [2020-01-16 18:11:17,302 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:17,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:17,838 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 18:11:17,838 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658025568] [2020-01-16 18:11:17,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:17,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:17,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075441732] [2020-01-16 18:11:17,839 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:17,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:17,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:17,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:17,839 INFO L87 Difference]: Start difference. First operand 1563 states and 7012 transitions. Second operand 11 states. [2020-01-16 18:11:18,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:18,045 INFO L93 Difference]: Finished difference Result 3017 states and 11911 transitions. [2020-01-16 18:11:18,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:18,045 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:18,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:18,053 INFO L225 Difference]: With dead ends: 3017 [2020-01-16 18:11:18,053 INFO L226 Difference]: Without dead ends: 3001 [2020-01-16 18:11:18,053 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 18:11:18,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3001 states. [2020-01-16 18:11:18,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3001 to 1588. [2020-01-16 18:11:18,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1588 states. [2020-01-16 18:11:18,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 7092 transitions. [2020-01-16 18:11:18,121 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 7092 transitions. Word has length 28 [2020-01-16 18:11:18,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:18,121 INFO L478 AbstractCegarLoop]: Abstraction has 1588 states and 7092 transitions. [2020-01-16 18:11:18,121 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:18,121 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 7092 transitions. [2020-01-16 18:11:18,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:18,123 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:18,123 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 18:11:18,124 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 18:11:18,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:18,124 INFO L82 PathProgramCache]: Analyzing trace with hash 93096616, now seen corresponding path program 626 times [2020-01-16 18:11:18,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:18,124 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938772076] [2020-01-16 18:11:18,124 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:18,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:18,666 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:11:18,673 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 18:11:18,673 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938772076] [2020-01-16 18:11:18,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:18,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:18,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506379161] [2020-01-16 18:11:18,673 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:18,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:18,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:18,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:18,674 INFO L87 Difference]: Start difference. First operand 1588 states and 7092 transitions. Second operand 11 states. [2020-01-16 18:11:18,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:18,844 INFO L93 Difference]: Finished difference Result 3021 states and 11912 transitions. [2020-01-16 18:11:18,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:18,845 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:18,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:18,852 INFO L225 Difference]: With dead ends: 3021 [2020-01-16 18:11:18,852 INFO L226 Difference]: Without dead ends: 2994 [2020-01-16 18:11:18,853 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 18:11:18,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2020-01-16 18:11:18,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 1581. [2020-01-16 18:11:18,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:11:18,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7072 transitions. [2020-01-16 18:11:18,921 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7072 transitions. Word has length 28 [2020-01-16 18:11:18,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:18,921 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7072 transitions. [2020-01-16 18:11:18,921 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:18,921 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7072 transitions. [2020-01-16 18:11:18,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:18,924 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:18,924 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:11:18,924 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 18:11:18,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:18,924 INFO L82 PathProgramCache]: Analyzing trace with hash 959335076, now seen corresponding path program 627 times [2020-01-16 18:11:18,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:18,924 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70501210] [2020-01-16 18:11:18,924 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:18,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:19,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:11:19,454 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70501210] [2020-01-16 18:11:19,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:19,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:19,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060929815] [2020-01-16 18:11:19,455 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:19,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:19,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:19,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:19,455 INFO L87 Difference]: Start difference. First operand 1581 states and 7072 transitions. Second operand 11 states. [2020-01-16 18:11:19,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:19,661 INFO L93 Difference]: Finished difference Result 3014 states and 11899 transitions. [2020-01-16 18:11:19,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:19,661 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:19,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:19,668 INFO L225 Difference]: With dead ends: 3014 [2020-01-16 18:11:19,669 INFO L226 Difference]: Without dead ends: 2998 [2020-01-16 18:11:19,669 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 18:11:19,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2998 states. [2020-01-16 18:11:19,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2998 to 1587. [2020-01-16 18:11:19,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1587 states. [2020-01-16 18:11:19,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 7083 transitions. [2020-01-16 18:11:19,738 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 7083 transitions. Word has length 28 [2020-01-16 18:11:19,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:19,738 INFO L478 AbstractCegarLoop]: Abstraction has 1587 states and 7083 transitions. [2020-01-16 18:11:19,738 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:19,738 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 7083 transitions. [2020-01-16 18:11:19,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:19,741 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:19,741 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 18:11:19,741 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 18:11:19,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:19,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1846227224, now seen corresponding path program 628 times [2020-01-16 18:11:19,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:19,741 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170593471] [2020-01-16 18:11:19,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:19,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:20,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:11:20,281 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170593471] [2020-01-16 18:11:20,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:20,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:20,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689649750] [2020-01-16 18:11:20,281 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:20,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:20,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:20,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:20,281 INFO L87 Difference]: Start difference. First operand 1587 states and 7083 transitions. Second operand 11 states. [2020-01-16 18:11:20,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:20,507 INFO L93 Difference]: Finished difference Result 3016 states and 11897 transitions. [2020-01-16 18:11:20,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:20,508 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:20,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:20,515 INFO L225 Difference]: With dead ends: 3016 [2020-01-16 18:11:20,516 INFO L226 Difference]: Without dead ends: 2992 [2020-01-16 18:11:20,516 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 18:11:20,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2992 states. [2020-01-16 18:11:20,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2992 to 1581. [2020-01-16 18:11:20,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:11:20,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7066 transitions. [2020-01-16 18:11:20,582 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7066 transitions. Word has length 28 [2020-01-16 18:11:20,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:20,582 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7066 transitions. [2020-01-16 18:11:20,582 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:20,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7066 transitions. [2020-01-16 18:11:20,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:20,585 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:20,585 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 18:11:20,585 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 18:11:20,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:20,585 INFO L82 PathProgramCache]: Analyzing trace with hash -979988764, now seen corresponding path program 629 times [2020-01-16 18:11:20,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:20,585 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653553883] [2020-01-16 18:11:20,585 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:20,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:21,149 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 18:11:21,149 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653553883] [2020-01-16 18:11:21,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:21,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:21,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465654256] [2020-01-16 18:11:21,150 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:21,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:21,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:21,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:21,150 INFO L87 Difference]: Start difference. First operand 1581 states and 7066 transitions. Second operand 11 states. [2020-01-16 18:11:21,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:21,322 INFO L93 Difference]: Finished difference Result 3026 states and 11916 transitions. [2020-01-16 18:11:21,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:21,322 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:21,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:21,330 INFO L225 Difference]: With dead ends: 3026 [2020-01-16 18:11:21,330 INFO L226 Difference]: Without dead ends: 3006 [2020-01-16 18:11:21,331 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:11:21,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3006 states. [2020-01-16 18:11:21,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3006 to 1591. [2020-01-16 18:11:21,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1591 states. [2020-01-16 18:11:21,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1591 states to 1591 states and 7083 transitions. [2020-01-16 18:11:21,420 INFO L78 Accepts]: Start accepts. Automaton has 1591 states and 7083 transitions. Word has length 28 [2020-01-16 18:11:21,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:21,420 INFO L478 AbstractCegarLoop]: Abstraction has 1591 states and 7083 transitions. [2020-01-16 18:11:21,420 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:21,420 INFO L276 IsEmpty]: Start isEmpty. Operand 1591 states and 7083 transitions. [2020-01-16 18:11:21,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:21,422 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:21,423 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:11:21,423 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 18:11:21,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:21,423 INFO L82 PathProgramCache]: Analyzing trace with hash -235286266, now seen corresponding path program 630 times [2020-01-16 18:11:21,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:21,423 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337971450] [2020-01-16 18:11:21,423 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:21,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:21,973 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 18:11:21,974 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337971450] [2020-01-16 18:11:21,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:21,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:21,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743183918] [2020-01-16 18:11:21,974 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:21,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:21,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:21,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:21,974 INFO L87 Difference]: Start difference. First operand 1591 states and 7083 transitions. Second operand 11 states. [2020-01-16 18:11:22,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:22,159 INFO L93 Difference]: Finished difference Result 3024 states and 11904 transitions. [2020-01-16 18:11:22,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:22,160 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:22,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:22,167 INFO L225 Difference]: With dead ends: 3024 [2020-01-16 18:11:22,167 INFO L226 Difference]: Without dead ends: 2988 [2020-01-16 18:11:22,167 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 18:11:22,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2988 states. [2020-01-16 18:11:22,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2988 to 1573. [2020-01-16 18:11:22,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:11:22,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7043 transitions. [2020-01-16 18:11:22,236 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7043 transitions. Word has length 28 [2020-01-16 18:11:22,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:22,236 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7043 transitions. [2020-01-16 18:11:22,236 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:22,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7043 transitions. [2020-01-16 18:11:22,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:22,238 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:22,238 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 18:11:22,238 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 18:11:22,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:22,239 INFO L82 PathProgramCache]: Analyzing trace with hash -63860560, now seen corresponding path program 631 times [2020-01-16 18:11:22,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:22,239 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080404590] [2020-01-16 18:11:22,239 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:22,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:22,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:11:22,778 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080404590] [2020-01-16 18:11:22,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:22,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:22,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746922560] [2020-01-16 18:11:22,778 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:22,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:22,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:22,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:22,779 INFO L87 Difference]: Start difference. First operand 1573 states and 7043 transitions. Second operand 11 states. [2020-01-16 18:11:22,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:22,981 INFO L93 Difference]: Finished difference Result 3013 states and 11895 transitions. [2020-01-16 18:11:22,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:22,982 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:22,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:22,989 INFO L225 Difference]: With dead ends: 3013 [2020-01-16 18:11:22,990 INFO L226 Difference]: Without dead ends: 2997 [2020-01-16 18:11:22,990 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:11:23,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2997 states. [2020-01-16 18:11:23,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2997 to 1587. [2020-01-16 18:11:23,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1587 states. [2020-01-16 18:11:23,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 7082 transitions. [2020-01-16 18:11:23,057 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 7082 transitions. Word has length 28 [2020-01-16 18:11:23,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:23,057 INFO L478 AbstractCegarLoop]: Abstraction has 1587 states and 7082 transitions. [2020-01-16 18:11:23,058 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:23,058 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 7082 transitions. [2020-01-16 18:11:23,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:23,060 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:23,060 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:11:23,060 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 18:11:23,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:23,060 INFO L82 PathProgramCache]: Analyzing trace with hash 680841938, now seen corresponding path program 632 times [2020-01-16 18:11:23,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:23,061 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555825113] [2020-01-16 18:11:23,061 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:23,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:23,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:11:23,601 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555825113] [2020-01-16 18:11:23,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:23,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:23,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524453370] [2020-01-16 18:11:23,601 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:23,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:23,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:23,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:23,602 INFO L87 Difference]: Start difference. First operand 1587 states and 7082 transitions. Second operand 11 states. [2020-01-16 18:11:23,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:23,752 INFO L93 Difference]: Finished difference Result 3017 states and 11896 transitions. [2020-01-16 18:11:23,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:23,753 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:23,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:23,760 INFO L225 Difference]: With dead ends: 3017 [2020-01-16 18:11:23,761 INFO L226 Difference]: Without dead ends: 2990 [2020-01-16 18:11:23,761 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:11:23,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2990 states. [2020-01-16 18:11:23,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2990 to 1580. [2020-01-16 18:11:23,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:11:23,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7062 transitions. [2020-01-16 18:11:23,828 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7062 transitions. Word has length 28 [2020-01-16 18:11:23,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:23,829 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7062 transitions. [2020-01-16 18:11:23,829 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:23,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7062 transitions. [2020-01-16 18:11:23,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:23,831 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:23,831 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:11:23,831 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 18:11:23,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:23,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1011850596, now seen corresponding path program 633 times [2020-01-16 18:11:23,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:23,832 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189800851] [2020-01-16 18:11:23,832 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:23,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:24,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:11:24,364 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189800851] [2020-01-16 18:11:24,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:24,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:24,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896045432] [2020-01-16 18:11:24,364 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:24,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:24,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:24,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:24,365 INFO L87 Difference]: Start difference. First operand 1580 states and 7062 transitions. Second operand 11 states. [2020-01-16 18:11:24,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:24,553 INFO L93 Difference]: Finished difference Result 3009 states and 11881 transitions. [2020-01-16 18:11:24,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:24,553 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:24,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:24,560 INFO L225 Difference]: With dead ends: 3009 [2020-01-16 18:11:24,560 INFO L226 Difference]: Without dead ends: 2993 [2020-01-16 18:11:24,560 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 18:11:24,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2993 states. [2020-01-16 18:11:24,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2993 to 1586. [2020-01-16 18:11:24,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1586 states. [2020-01-16 18:11:24,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 7073 transitions. [2020-01-16 18:11:24,629 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 7073 transitions. Word has length 28 [2020-01-16 18:11:24,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:24,629 INFO L478 AbstractCegarLoop]: Abstraction has 1586 states and 7073 transitions. [2020-01-16 18:11:24,629 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:24,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 7073 transitions. [2020-01-16 18:11:24,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:24,631 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:24,631 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:11:24,631 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 18:11:24,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:24,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1929800786, now seen corresponding path program 634 times [2020-01-16 18:11:24,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:24,632 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675854492] [2020-01-16 18:11:24,632 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:24,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:25,166 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 18:11:25,167 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675854492] [2020-01-16 18:11:25,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:25,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:25,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677384814] [2020-01-16 18:11:25,167 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:25,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:25,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:25,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:25,168 INFO L87 Difference]: Start difference. First operand 1586 states and 7073 transitions. Second operand 11 states. [2020-01-16 18:11:25,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:25,349 INFO L93 Difference]: Finished difference Result 3010 states and 11877 transitions. [2020-01-16 18:11:25,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:25,349 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:25,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:25,356 INFO L225 Difference]: With dead ends: 3010 [2020-01-16 18:11:25,356 INFO L226 Difference]: Without dead ends: 2987 [2020-01-16 18:11:25,356 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:11:25,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2987 states. [2020-01-16 18:11:25,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2987 to 1580. [2020-01-16 18:11:25,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:11:25,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7056 transitions. [2020-01-16 18:11:25,425 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7056 transitions. Word has length 28 [2020-01-16 18:11:25,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:25,425 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7056 transitions. [2020-01-16 18:11:25,425 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:25,425 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7056 transitions. [2020-01-16 18:11:25,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:25,427 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:25,427 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 18:11:25,428 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 18:11:25,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:25,428 INFO L82 PathProgramCache]: Analyzing trace with hash -927473244, now seen corresponding path program 635 times [2020-01-16 18:11:25,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:25,428 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824038408] [2020-01-16 18:11:25,428 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:25,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:25,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:11:25,979 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824038408] [2020-01-16 18:11:25,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:25,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:25,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091740025] [2020-01-16 18:11:25,979 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:25,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:25,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:25,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:25,980 INFO L87 Difference]: Start difference. First operand 1580 states and 7056 transitions. Second operand 11 states. [2020-01-16 18:11:26,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:26,164 INFO L93 Difference]: Finished difference Result 3019 states and 11894 transitions. [2020-01-16 18:11:26,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:26,164 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:26,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:26,172 INFO L225 Difference]: With dead ends: 3019 [2020-01-16 18:11:26,172 INFO L226 Difference]: Without dead ends: 2999 [2020-01-16 18:11:26,172 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 18:11:26,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2999 states. [2020-01-16 18:11:26,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2999 to 1588. [2020-01-16 18:11:26,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1588 states. [2020-01-16 18:11:26,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 7070 transitions. [2020-01-16 18:11:26,239 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 7070 transitions. Word has length 28 [2020-01-16 18:11:26,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:26,239 INFO L478 AbstractCegarLoop]: Abstraction has 1588 states and 7070 transitions. [2020-01-16 18:11:26,239 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:26,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 7070 transitions. [2020-01-16 18:11:26,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:26,241 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:26,241 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 18:11:26,242 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 18:11:26,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:26,242 INFO L82 PathProgramCache]: Analyzing trace with hash -754225552, now seen corresponding path program 636 times [2020-01-16 18:11:26,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:26,242 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719660969] [2020-01-16 18:11:26,242 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:26,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:26,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:11:26,780 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719660969] [2020-01-16 18:11:26,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:26,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:26,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425156292] [2020-01-16 18:11:26,781 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:26,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:26,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:26,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:26,781 INFO L87 Difference]: Start difference. First operand 1588 states and 7070 transitions. Second operand 11 states. [2020-01-16 18:11:27,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:27,046 INFO L93 Difference]: Finished difference Result 3016 states and 11881 transitions. [2020-01-16 18:11:27,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:27,046 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:27,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:27,053 INFO L225 Difference]: With dead ends: 3016 [2020-01-16 18:11:27,054 INFO L226 Difference]: Without dead ends: 2984 [2020-01-16 18:11:27,054 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 18:11:27,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2984 states. [2020-01-16 18:11:27,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2984 to 1573. [2020-01-16 18:11:27,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:11:27,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7036 transitions. [2020-01-16 18:11:27,120 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7036 transitions. Word has length 28 [2020-01-16 18:11:27,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:27,121 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7036 transitions. [2020-01-16 18:11:27,121 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:27,121 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7036 transitions. [2020-01-16 18:11:27,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:27,123 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:27,123 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 18:11:27,123 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 18:11:27,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:27,123 INFO L82 PathProgramCache]: Analyzing trace with hash -53357456, now seen corresponding path program 637 times [2020-01-16 18:11:27,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:27,124 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198261526] [2020-01-16 18:11:27,124 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:27,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:27,654 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 18:11:27,654 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198261526] [2020-01-16 18:11:27,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:27,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:27,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906128780] [2020-01-16 18:11:27,655 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:27,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:27,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:27,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:27,655 INFO L87 Difference]: Start difference. First operand 1573 states and 7036 transitions. Second operand 11 states. [2020-01-16 18:11:27,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:27,933 INFO L93 Difference]: Finished difference Result 3005 states and 11873 transitions. [2020-01-16 18:11:27,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:27,933 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:27,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:27,941 INFO L225 Difference]: With dead ends: 3005 [2020-01-16 18:11:27,941 INFO L226 Difference]: Without dead ends: 2989 [2020-01-16 18:11:27,942 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:11:27,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2020-01-16 18:11:28,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 1585. [2020-01-16 18:11:28,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 18:11:28,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7070 transitions. [2020-01-16 18:11:28,008 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7070 transitions. Word has length 28 [2020-01-16 18:11:28,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:28,008 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7070 transitions. [2020-01-16 18:11:28,008 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:28,008 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7070 transitions. [2020-01-16 18:11:28,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:28,010 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:28,010 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 18:11:28,011 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 18:11:28,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:28,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1436047540, now seen corresponding path program 638 times [2020-01-16 18:11:28,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:28,011 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570350570] [2020-01-16 18:11:28,011 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:28,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:28,547 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 18:11:28,547 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570350570] [2020-01-16 18:11:28,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:28,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:28,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390564947] [2020-01-16 18:11:28,548 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:28,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:28,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:28,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:28,548 INFO L87 Difference]: Start difference. First operand 1585 states and 7070 transitions. Second operand 11 states. [2020-01-16 18:11:28,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:28,763 INFO L93 Difference]: Finished difference Result 3007 states and 11871 transitions. [2020-01-16 18:11:28,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:28,764 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:28,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:28,771 INFO L225 Difference]: With dead ends: 3007 [2020-01-16 18:11:28,771 INFO L226 Difference]: Without dead ends: 2983 [2020-01-16 18:11:28,771 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:11:28,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2983 states. [2020-01-16 18:11:28,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2983 to 1579. [2020-01-16 18:11:28,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:11:28,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7053 transitions. [2020-01-16 18:11:28,838 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7053 transitions. Word has length 28 [2020-01-16 18:11:28,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:28,838 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7053 transitions. [2020-01-16 18:11:28,838 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:28,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7053 transitions. [2020-01-16 18:11:28,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:28,840 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:28,840 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:11:28,840 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 18:11:28,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:28,841 INFO L82 PathProgramCache]: Analyzing trace with hash -588587258, now seen corresponding path program 639 times [2020-01-16 18:11:28,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:28,841 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475053355] [2020-01-16 18:11:28,841 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:28,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:29,375 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:11:29,382 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 18:11:29,382 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475053355] [2020-01-16 18:11:29,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:29,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:29,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54966353] [2020-01-16 18:11:29,382 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:29,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:29,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:29,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:29,383 INFO L87 Difference]: Start difference. First operand 1579 states and 7053 transitions. Second operand 11 states. [2020-01-16 18:11:29,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:29,644 INFO L93 Difference]: Finished difference Result 3004 states and 11865 transitions. [2020-01-16 18:11:29,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:29,644 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:29,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:29,651 INFO L225 Difference]: With dead ends: 3004 [2020-01-16 18:11:29,651 INFO L226 Difference]: Without dead ends: 2988 [2020-01-16 18:11:29,651 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:11:29,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2988 states. [2020-01-16 18:11:29,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2988 to 1585. [2020-01-16 18:11:29,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 18:11:29,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7064 transitions. [2020-01-16 18:11:29,719 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7064 transitions. Word has length 28 [2020-01-16 18:11:29,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:29,719 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7064 transitions. [2020-01-16 18:11:29,719 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:29,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7064 transitions. [2020-01-16 18:11:29,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:29,721 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:29,721 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:11:29,721 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 18:11:29,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:29,722 INFO L82 PathProgramCache]: Analyzing trace with hash 329362932, now seen corresponding path program 640 times [2020-01-16 18:11:29,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:29,722 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196254304] [2020-01-16 18:11:29,722 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:29,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:30,259 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 18:11:30,260 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196254304] [2020-01-16 18:11:30,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:30,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:30,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119127619] [2020-01-16 18:11:30,260 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:30,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:30,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:30,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:30,260 INFO L87 Difference]: Start difference. First operand 1585 states and 7064 transitions. Second operand 11 states. [2020-01-16 18:11:30,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:30,464 INFO L93 Difference]: Finished difference Result 3005 states and 11861 transitions. [2020-01-16 18:11:30,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:30,464 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:30,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:30,472 INFO L225 Difference]: With dead ends: 3005 [2020-01-16 18:11:30,472 INFO L226 Difference]: Without dead ends: 2982 [2020-01-16 18:11:30,472 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 18:11:30,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2982 states. [2020-01-16 18:11:30,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2982 to 1579. [2020-01-16 18:11:30,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:11:30,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7047 transitions. [2020-01-16 18:11:30,538 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7047 transitions. Word has length 28 [2020-01-16 18:11:30,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:30,539 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7047 transitions. [2020-01-16 18:11:30,539 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:30,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7047 transitions. [2020-01-16 18:11:30,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:30,541 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:30,541 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 18:11:30,541 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 18:11:30,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:30,541 INFO L82 PathProgramCache]: Analyzing trace with hash -172267642, now seen corresponding path program 641 times [2020-01-16 18:11:30,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:30,542 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378301435] [2020-01-16 18:11:30,542 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:30,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:31,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:11:31,090 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378301435] [2020-01-16 18:11:31,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:31,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:31,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606819535] [2020-01-16 18:11:31,091 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:31,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:31,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:31,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:31,091 INFO L87 Difference]: Start difference. First operand 1579 states and 7047 transitions. Second operand 11 states. [2020-01-16 18:11:31,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:31,295 INFO L93 Difference]: Finished difference Result 3009 states and 11870 transitions. [2020-01-16 18:11:31,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:31,295 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:31,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:31,302 INFO L225 Difference]: With dead ends: 3009 [2020-01-16 18:11:31,302 INFO L226 Difference]: Without dead ends: 2991 [2020-01-16 18:11:31,302 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 18:11:31,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2991 states. [2020-01-16 18:11:31,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2991 to 1586. [2020-01-16 18:11:31,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1586 states. [2020-01-16 18:11:31,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 7060 transitions. [2020-01-16 18:11:31,371 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 7060 transitions. Word has length 28 [2020-01-16 18:11:31,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:31,371 INFO L478 AbstractCegarLoop]: Abstraction has 1586 states and 7060 transitions. [2020-01-16 18:11:31,371 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:31,371 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 7060 transitions. [2020-01-16 18:11:31,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:31,373 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:31,373 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:11:31,373 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 18:11:31,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:31,373 INFO L82 PathProgramCache]: Analyzing trace with hash -743722448, now seen corresponding path program 642 times [2020-01-16 18:11:31,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:31,374 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213898576] [2020-01-16 18:11:31,374 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:31,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:31,906 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 18:11:31,907 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213898576] [2020-01-16 18:11:31,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:31,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:31,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453333606] [2020-01-16 18:11:31,907 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:31,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:31,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:31,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:31,908 INFO L87 Difference]: Start difference. First operand 1586 states and 7060 transitions. Second operand 11 states. [2020-01-16 18:11:32,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:32,104 INFO L93 Difference]: Finished difference Result 3008 states and 11861 transitions. [2020-01-16 18:11:32,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:32,105 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:32,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:32,111 INFO L225 Difference]: With dead ends: 3008 [2020-01-16 18:11:32,111 INFO L226 Difference]: Without dead ends: 2978 [2020-01-16 18:11:32,111 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:11:32,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2978 states. [2020-01-16 18:11:32,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2978 to 1573. [2020-01-16 18:11:32,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:11:32,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7030 transitions. [2020-01-16 18:11:32,180 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7030 transitions. Word has length 28 [2020-01-16 18:11:32,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:32,180 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7030 transitions. [2020-01-16 18:11:32,180 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:32,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7030 transitions. [2020-01-16 18:11:32,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:32,182 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:32,183 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:11:32,183 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 18:11:32,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:32,183 INFO L82 PathProgramCache]: Analyzing trace with hash 701848146, now seen corresponding path program 643 times [2020-01-16 18:11:32,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:32,183 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057058835] [2020-01-16 18:11:32,183 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:32,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:32,737 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 18:11:32,737 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057058835] [2020-01-16 18:11:32,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:32,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:32,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200454274] [2020-01-16 18:11:32,738 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:32,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:32,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:32,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:32,738 INFO L87 Difference]: Start difference. First operand 1573 states and 7030 transitions. Second operand 11 states. [2020-01-16 18:11:32,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:32,957 INFO L93 Difference]: Finished difference Result 3031 states and 11921 transitions. [2020-01-16 18:11:32,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:32,958 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:32,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:32,965 INFO L225 Difference]: With dead ends: 3031 [2020-01-16 18:11:32,965 INFO L226 Difference]: Without dead ends: 3011 [2020-01-16 18:11:32,966 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 18:11:33,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3011 states. [2020-01-16 18:11:33,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3011 to 1593. [2020-01-16 18:11:33,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1593 states. [2020-01-16 18:11:33,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1593 states to 1593 states and 7080 transitions. [2020-01-16 18:11:33,034 INFO L78 Accepts]: Start accepts. Automaton has 1593 states and 7080 transitions. Word has length 28 [2020-01-16 18:11:33,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:33,034 INFO L478 AbstractCegarLoop]: Abstraction has 1593 states and 7080 transitions. [2020-01-16 18:11:33,034 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:33,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1593 states and 7080 transitions. [2020-01-16 18:11:33,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:33,037 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:33,037 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 18:11:33,037 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 18:11:33,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:33,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1446550644, now seen corresponding path program 644 times [2020-01-16 18:11:33,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:33,037 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591279333] [2020-01-16 18:11:33,037 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:33,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:33,585 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 18:11:33,585 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591279333] [2020-01-16 18:11:33,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:33,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:33,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257590917] [2020-01-16 18:11:33,586 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:33,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:33,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:33,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:33,586 INFO L87 Difference]: Start difference. First operand 1593 states and 7080 transitions. Second operand 11 states. [2020-01-16 18:11:33,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:33,788 INFO L93 Difference]: Finished difference Result 3029 states and 11909 transitions. [2020-01-16 18:11:33,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:33,788 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:33,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:33,795 INFO L225 Difference]: With dead ends: 3029 [2020-01-16 18:11:33,796 INFO L226 Difference]: Without dead ends: 3001 [2020-01-16 18:11:33,796 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 18:11:33,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3001 states. [2020-01-16 18:11:33,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3001 to 1583. [2020-01-16 18:11:33,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:11:33,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7054 transitions. [2020-01-16 18:11:33,863 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7054 transitions. Word has length 28 [2020-01-16 18:11:33,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:33,863 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7054 transitions. [2020-01-16 18:11:33,863 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:33,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7054 transitions. [2020-01-16 18:11:33,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:33,865 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:33,865 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 18:11:33,865 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 18:11:33,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:33,865 INFO L82 PathProgramCache]: Analyzing trace with hash 166618344, now seen corresponding path program 645 times [2020-01-16 18:11:33,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:33,866 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046197383] [2020-01-16 18:11:33,866 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:33,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:34,452 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 18:11:34,452 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046197383] [2020-01-16 18:11:34,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:34,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:34,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845147239] [2020-01-16 18:11:34,453 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:34,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:34,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:34,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:34,453 INFO L87 Difference]: Start difference. First operand 1583 states and 7054 transitions. Second operand 11 states. [2020-01-16 18:11:34,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:34,624 INFO L93 Difference]: Finished difference Result 3028 states and 11906 transitions. [2020-01-16 18:11:34,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:34,625 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:34,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:34,632 INFO L225 Difference]: With dead ends: 3028 [2020-01-16 18:11:34,632 INFO L226 Difference]: Without dead ends: 3008 [2020-01-16 18:11:34,632 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 18:11:34,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2020-01-16 18:11:34,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 1591. [2020-01-16 18:11:34,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1591 states. [2020-01-16 18:11:34,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1591 states to 1591 states and 7068 transitions. [2020-01-16 18:11:34,700 INFO L78 Accepts]: Start accepts. Automaton has 1591 states and 7068 transitions. Word has length 28 [2020-01-16 18:11:34,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:34,700 INFO L478 AbstractCegarLoop]: Abstraction has 1591 states and 7068 transitions. [2020-01-16 18:11:34,700 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:34,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1591 states and 7068 transitions. [2020-01-16 18:11:34,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:34,702 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:34,702 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:11:34,702 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 18:11:34,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:34,702 INFO L82 PathProgramCache]: Analyzing trace with hash 339866036, now seen corresponding path program 646 times [2020-01-16 18:11:34,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:34,703 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232209667] [2020-01-16 18:11:34,703 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:34,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:35,249 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:11:35,256 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 18:11:35,256 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232209667] [2020-01-16 18:11:35,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:35,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:35,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021634008] [2020-01-16 18:11:35,257 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:35,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:35,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:35,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:35,257 INFO L87 Difference]: Start difference. First operand 1591 states and 7068 transitions. Second operand 11 states. [2020-01-16 18:11:35,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:35,456 INFO L93 Difference]: Finished difference Result 3025 states and 11893 transitions. [2020-01-16 18:11:35,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:35,457 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:35,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:35,464 INFO L225 Difference]: With dead ends: 3025 [2020-01-16 18:11:35,464 INFO L226 Difference]: Without dead ends: 3000 [2020-01-16 18:11:35,464 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 18:11:35,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3000 states. [2020-01-16 18:11:35,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3000 to 1583. [2020-01-16 18:11:35,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:11:35,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7046 transitions. [2020-01-16 18:11:35,533 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7046 transitions. Word has length 28 [2020-01-16 18:11:35,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:35,533 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7046 transitions. [2020-01-16 18:11:35,533 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:35,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7046 transitions. [2020-01-16 18:11:35,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:35,535 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:35,536 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 18:11:35,536 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 18:11:35,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:35,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1772705496, now seen corresponding path program 647 times [2020-01-16 18:11:35,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:35,536 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513976119] [2020-01-16 18:11:35,536 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:35,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:36,086 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 18:11:36,087 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513976119] [2020-01-16 18:11:36,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:36,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:36,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419454290] [2020-01-16 18:11:36,087 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:36,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:36,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:36,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:36,088 INFO L87 Difference]: Start difference. First operand 1583 states and 7046 transitions. Second operand 11 states. [2020-01-16 18:11:36,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:36,258 INFO L93 Difference]: Finished difference Result 3023 states and 11890 transitions. [2020-01-16 18:11:36,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:36,259 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:36,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:36,266 INFO L225 Difference]: With dead ends: 3023 [2020-01-16 18:11:36,267 INFO L226 Difference]: Without dead ends: 3005 [2020-01-16 18:11:36,267 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 18:11:36,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3005 states. [2020-01-16 18:11:36,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3005 to 1590. [2020-01-16 18:11:36,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1590 states. [2020-01-16 18:11:36,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 7059 transitions. [2020-01-16 18:11:36,336 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 7059 transitions. Word has length 28 [2020-01-16 18:11:36,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:36,336 INFO L478 AbstractCegarLoop]: Abstraction has 1590 states and 7059 transitions. [2020-01-16 18:11:36,336 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:36,336 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 7059 transitions. [2020-01-16 18:11:36,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:36,339 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:36,339 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 18:11:36,339 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 18:11:36,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:36,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1950806994, now seen corresponding path program 648 times [2020-01-16 18:11:36,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:36,339 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554655061] [2020-01-16 18:11:36,339 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:36,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:36,874 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:11:36,880 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 18:11:36,881 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554655061] [2020-01-16 18:11:36,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:36,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:36,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658618690] [2020-01-16 18:11:36,881 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:36,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:36,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:36,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:36,882 INFO L87 Difference]: Start difference. First operand 1590 states and 7059 transitions. Second operand 11 states. [2020-01-16 18:11:37,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:37,058 INFO L93 Difference]: Finished difference Result 3022 states and 11881 transitions. [2020-01-16 18:11:37,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:37,059 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:37,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:37,066 INFO L225 Difference]: With dead ends: 3022 [2020-01-16 18:11:37,067 INFO L226 Difference]: Without dead ends: 2978 [2020-01-16 18:11:37,067 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 18:11:37,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2978 states. [2020-01-16 18:11:37,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2978 to 1563. [2020-01-16 18:11:37,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 18:11:37,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7004 transitions. [2020-01-16 18:11:37,135 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7004 transitions. Word has length 28 [2020-01-16 18:11:37,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:37,136 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7004 transitions. [2020-01-16 18:11:37,136 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:37,136 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7004 transitions. [2020-01-16 18:11:37,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:37,138 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:37,138 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:11:37,138 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 18:11:37,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:37,138 INFO L82 PathProgramCache]: Analyzing trace with hash 325182790, now seen corresponding path program 649 times [2020-01-16 18:11:37,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:37,138 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697356140] [2020-01-16 18:11:37,139 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:37,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:37,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:11:37,645 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697356140] [2020-01-16 18:11:37,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:37,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:37,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176068226] [2020-01-16 18:11:37,645 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:37,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:37,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:37,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:37,646 INFO L87 Difference]: Start difference. First operand 1563 states and 7004 transitions. Second operand 11 states. [2020-01-16 18:11:37,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:37,817 INFO L93 Difference]: Finished difference Result 2974 states and 11781 transitions. [2020-01-16 18:11:37,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:37,818 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:37,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:37,825 INFO L225 Difference]: With dead ends: 2974 [2020-01-16 18:11:37,825 INFO L226 Difference]: Without dead ends: 2958 [2020-01-16 18:11:37,826 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:11:37,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2958 states. [2020-01-16 18:11:37,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2958 to 1580. [2020-01-16 18:11:37,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:11:37,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7058 transitions. [2020-01-16 18:11:37,894 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7058 transitions. Word has length 28 [2020-01-16 18:11:37,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:37,894 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7058 transitions. [2020-01-16 18:11:37,894 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:37,894 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7058 transitions. [2020-01-16 18:11:37,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:37,896 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:37,896 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:11:37,896 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 18:11:37,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:37,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1069885288, now seen corresponding path program 650 times [2020-01-16 18:11:37,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:37,897 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602132049] [2020-01-16 18:11:37,897 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:37,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:38,418 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 18:11:38,418 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602132049] [2020-01-16 18:11:38,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:38,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:38,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776771160] [2020-01-16 18:11:38,419 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:38,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:38,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:38,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:38,419 INFO L87 Difference]: Start difference. First operand 1580 states and 7058 transitions. Second operand 11 states. [2020-01-16 18:11:38,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:38,557 INFO L93 Difference]: Finished difference Result 2978 states and 11782 transitions. [2020-01-16 18:11:38,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:38,557 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:38,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:38,564 INFO L225 Difference]: With dead ends: 2978 [2020-01-16 18:11:38,564 INFO L226 Difference]: Without dead ends: 2951 [2020-01-16 18:11:38,565 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 18:11:38,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2020-01-16 18:11:38,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 1573. [2020-01-16 18:11:38,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:11:38,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7040 transitions. [2020-01-16 18:11:38,631 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7040 transitions. Word has length 28 [2020-01-16 18:11:38,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:38,631 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7040 transitions. [2020-01-16 18:11:38,631 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:38,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7040 transitions. [2020-01-16 18:11:38,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:38,633 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:38,633 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 18:11:38,633 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 18:11:38,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:38,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1820987970, now seen corresponding path program 651 times [2020-01-16 18:11:38,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:38,634 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621796075] [2020-01-16 18:11:38,634 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:38,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:39,152 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 18:11:39,153 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621796075] [2020-01-16 18:11:39,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:39,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:39,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403717853] [2020-01-16 18:11:39,153 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:39,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:39,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:39,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:39,153 INFO L87 Difference]: Start difference. First operand 1573 states and 7040 transitions. Second operand 11 states. [2020-01-16 18:11:39,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:39,343 INFO L93 Difference]: Finished difference Result 2965 states and 11757 transitions. [2020-01-16 18:11:39,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:39,343 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:39,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:39,350 INFO L225 Difference]: With dead ends: 2965 [2020-01-16 18:11:39,350 INFO L226 Difference]: Without dead ends: 2949 [2020-01-16 18:11:39,350 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 18:11:39,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2949 states. [2020-01-16 18:11:39,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2949 to 1577. [2020-01-16 18:11:39,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:11:39,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7047 transitions. [2020-01-16 18:11:39,418 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7047 transitions. Word has length 28 [2020-01-16 18:11:39,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:39,419 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7047 transitions. [2020-01-16 18:11:39,419 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:39,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7047 transitions. [2020-01-16 18:11:39,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:39,421 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:39,421 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 18:11:39,421 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 18:11:39,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:39,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1902524520, now seen corresponding path program 652 times [2020-01-16 18:11:39,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:39,422 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311844154] [2020-01-16 18:11:39,422 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:39,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:39,924 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 18:11:39,924 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311844154] [2020-01-16 18:11:39,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:39,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:39,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134195523] [2020-01-16 18:11:39,925 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:39,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:39,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:39,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:39,925 INFO L87 Difference]: Start difference. First operand 1577 states and 7047 transitions. Second operand 11 states. [2020-01-16 18:11:40,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:40,099 INFO L93 Difference]: Finished difference Result 2963 states and 11749 transitions. [2020-01-16 18:11:40,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:40,099 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:40,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:40,106 INFO L225 Difference]: With dead ends: 2963 [2020-01-16 18:11:40,106 INFO L226 Difference]: Without dead ends: 2945 [2020-01-16 18:11:40,106 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:11:40,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2945 states. [2020-01-16 18:11:40,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2945 to 1573. [2020-01-16 18:11:40,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:11:40,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7036 transitions. [2020-01-16 18:11:40,175 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7036 transitions. Word has length 28 [2020-01-16 18:11:40,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:40,175 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7036 transitions. [2020-01-16 18:11:40,175 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:40,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7036 transitions. [2020-01-16 18:11:40,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:40,177 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:40,177 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:11:40,177 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 18:11:40,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:40,177 INFO L82 PathProgramCache]: Analyzing trace with hash 534655486, now seen corresponding path program 653 times [2020-01-16 18:11:40,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:40,178 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381214848] [2020-01-16 18:11:40,178 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:40,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:40,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:11:40,711 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381214848] [2020-01-16 18:11:40,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:40,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:40,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918053315] [2020-01-16 18:11:40,711 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:40,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:40,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:40,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:40,712 INFO L87 Difference]: Start difference. First operand 1573 states and 7036 transitions. Second operand 11 states. [2020-01-16 18:11:40,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:40,847 INFO L93 Difference]: Finished difference Result 2974 states and 11769 transitions. [2020-01-16 18:11:40,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:40,847 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:40,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:40,854 INFO L225 Difference]: With dead ends: 2974 [2020-01-16 18:11:40,854 INFO L226 Difference]: Without dead ends: 2954 [2020-01-16 18:11:40,854 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 18:11:40,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2020-01-16 18:11:40,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 1578. [2020-01-16 18:11:40,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:11:40,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7044 transitions. [2020-01-16 18:11:40,921 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7044 transitions. Word has length 28 [2020-01-16 18:11:40,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:40,921 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7044 transitions. [2020-01-16 18:11:40,921 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:40,921 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7044 transitions. [2020-01-16 18:11:40,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:40,924 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:40,924 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:11:40,924 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 18:11:40,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:40,924 INFO L82 PathProgramCache]: Analyzing trace with hash -781501818, now seen corresponding path program 654 times [2020-01-16 18:11:40,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:40,924 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111462914] [2020-01-16 18:11:40,924 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:40,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:41,430 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 18:11:41,430 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111462914] [2020-01-16 18:11:41,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:41,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:41,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878231568] [2020-01-16 18:11:41,431 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:41,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:41,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:41,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:41,431 INFO L87 Difference]: Start difference. First operand 1578 states and 7044 transitions. Second operand 11 states. [2020-01-16 18:11:41,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:41,607 INFO L93 Difference]: Finished difference Result 2968 states and 11753 transitions. [2020-01-16 18:11:41,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:41,608 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:41,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:41,615 INFO L225 Difference]: With dead ends: 2968 [2020-01-16 18:11:41,616 INFO L226 Difference]: Without dead ends: 2944 [2020-01-16 18:11:41,616 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 18:11:41,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2944 states. [2020-01-16 18:11:41,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2944 to 1568. [2020-01-16 18:11:41,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 18:11:41,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7022 transitions. [2020-01-16 18:11:41,684 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7022 transitions. Word has length 28 [2020-01-16 18:11:41,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:41,685 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7022 transitions. [2020-01-16 18:11:41,685 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:41,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7022 transitions. [2020-01-16 18:11:41,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:41,687 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:41,687 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 18:11:41,687 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 18:11:41,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:41,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1419274378, now seen corresponding path program 655 times [2020-01-16 18:11:41,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:41,687 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475482919] [2020-01-16 18:11:41,688 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:41,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:42,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:11:42,227 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475482919] [2020-01-16 18:11:42,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:42,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:42,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823016071] [2020-01-16 18:11:42,228 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:42,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:42,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:42,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:42,228 INFO L87 Difference]: Start difference. First operand 1568 states and 7022 transitions. Second operand 11 states. [2020-01-16 18:11:42,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:42,406 INFO L93 Difference]: Finished difference Result 2984 states and 11805 transitions. [2020-01-16 18:11:42,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:42,406 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:42,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:42,413 INFO L225 Difference]: With dead ends: 2984 [2020-01-16 18:11:42,413 INFO L226 Difference]: Without dead ends: 2968 [2020-01-16 18:11:42,413 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 18:11:42,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2968 states. [2020-01-16 18:11:42,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2968 to 1582. [2020-01-16 18:11:42,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 18:11:42,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7061 transitions. [2020-01-16 18:11:42,483 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7061 transitions. Word has length 28 [2020-01-16 18:11:42,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:42,483 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7061 transitions. [2020-01-16 18:11:42,483 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:42,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7061 transitions. [2020-01-16 18:11:42,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:42,485 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:42,485 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:11:42,485 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 18:11:42,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:42,486 INFO L82 PathProgramCache]: Analyzing trace with hash -2130990420, now seen corresponding path program 656 times [2020-01-16 18:11:42,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:42,486 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245320784] [2020-01-16 18:11:42,486 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:42,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:43,023 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 18:11:43,023 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245320784] [2020-01-16 18:11:43,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:43,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:43,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403879415] [2020-01-16 18:11:43,023 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:43,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:43,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:43,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:43,024 INFO L87 Difference]: Start difference. First operand 1582 states and 7061 transitions. Second operand 11 states. [2020-01-16 18:11:43,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:43,162 INFO L93 Difference]: Finished difference Result 2988 states and 11806 transitions. [2020-01-16 18:11:43,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:43,162 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:43,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:43,169 INFO L225 Difference]: With dead ends: 2988 [2020-01-16 18:11:43,169 INFO L226 Difference]: Without dead ends: 2961 [2020-01-16 18:11:43,169 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 18:11:43,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2020-01-16 18:11:43,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 1575. [2020-01-16 18:11:43,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:11:43,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7041 transitions. [2020-01-16 18:11:43,237 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7041 transitions. Word has length 28 [2020-01-16 18:11:43,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:43,237 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7041 transitions. [2020-01-16 18:11:43,237 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:43,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7041 transitions. [2020-01-16 18:11:43,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:43,239 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:43,239 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 18:11:43,239 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 18:11:43,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:43,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1799981762, now seen corresponding path program 657 times [2020-01-16 18:11:43,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:43,240 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065436450] [2020-01-16 18:11:43,240 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:43,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:43,767 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 18:11:43,768 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065436450] [2020-01-16 18:11:43,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:43,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:43,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443616544] [2020-01-16 18:11:43,768 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:43,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:43,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:43,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:43,769 INFO L87 Difference]: Start difference. First operand 1575 states and 7041 transitions. Second operand 11 states. [2020-01-16 18:11:43,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:43,950 INFO L93 Difference]: Finished difference Result 2980 states and 11791 transitions. [2020-01-16 18:11:43,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:43,951 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:43,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:43,958 INFO L225 Difference]: With dead ends: 2980 [2020-01-16 18:11:43,958 INFO L226 Difference]: Without dead ends: 2964 [2020-01-16 18:11:43,959 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:11:44,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2964 states. [2020-01-16 18:11:44,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2964 to 1581. [2020-01-16 18:11:44,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:11:44,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7052 transitions. [2020-01-16 18:11:44,026 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7052 transitions. Word has length 28 [2020-01-16 18:11:44,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:44,026 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7052 transitions. [2020-01-16 18:11:44,026 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:44,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7052 transitions. [2020-01-16 18:11:44,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:44,028 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:44,028 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:11:44,028 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 18:11:44,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:44,028 INFO L82 PathProgramCache]: Analyzing trace with hash -882031572, now seen corresponding path program 658 times [2020-01-16 18:11:44,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:44,029 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117035118] [2020-01-16 18:11:44,029 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:44,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:44,551 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 18:11:44,551 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117035118] [2020-01-16 18:11:44,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:44,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:44,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168962330] [2020-01-16 18:11:44,552 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:44,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:44,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:44,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:44,552 INFO L87 Difference]: Start difference. First operand 1581 states and 7052 transitions. Second operand 11 states. [2020-01-16 18:11:44,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:44,736 INFO L93 Difference]: Finished difference Result 2981 states and 11787 transitions. [2020-01-16 18:11:44,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:44,737 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:44,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:44,745 INFO L225 Difference]: With dead ends: 2981 [2020-01-16 18:11:44,745 INFO L226 Difference]: Without dead ends: 2958 [2020-01-16 18:11:44,745 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:11:44,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2958 states. [2020-01-16 18:11:44,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2958 to 1575. [2020-01-16 18:11:44,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:11:44,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7035 transitions. [2020-01-16 18:11:44,812 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7035 transitions. Word has length 28 [2020-01-16 18:11:44,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:44,812 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7035 transitions. [2020-01-16 18:11:44,812 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:44,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7035 transitions. [2020-01-16 18:11:44,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:44,814 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:44,814 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:11:44,814 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 18:11:44,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:44,815 INFO L82 PathProgramCache]: Analyzing trace with hash 555661694, now seen corresponding path program 659 times [2020-01-16 18:11:44,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:44,815 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703459489] [2020-01-16 18:11:44,815 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:44,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:45,351 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 18:11:45,352 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703459489] [2020-01-16 18:11:45,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:45,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:45,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224454898] [2020-01-16 18:11:45,352 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:45,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:45,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:45,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:45,353 INFO L87 Difference]: Start difference. First operand 1575 states and 7035 transitions. Second operand 11 states. [2020-01-16 18:11:45,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:45,497 INFO L93 Difference]: Finished difference Result 2990 states and 11804 transitions. [2020-01-16 18:11:45,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:45,498 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:45,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:45,506 INFO L225 Difference]: With dead ends: 2990 [2020-01-16 18:11:45,506 INFO L226 Difference]: Without dead ends: 2970 [2020-01-16 18:11:45,506 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 18:11:45,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2970 states. [2020-01-16 18:11:45,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2970 to 1583. [2020-01-16 18:11:45,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:11:45,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7049 transitions. [2020-01-16 18:11:45,573 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7049 transitions. Word has length 28 [2020-01-16 18:11:45,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:45,573 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7049 transitions. [2020-01-16 18:11:45,573 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:45,573 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7049 transitions. [2020-01-16 18:11:45,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:45,576 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:45,576 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:11:45,576 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 18:11:45,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:45,576 INFO L82 PathProgramCache]: Analyzing trace with hash 728909386, now seen corresponding path program 660 times [2020-01-16 18:11:45,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:45,576 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786844751] [2020-01-16 18:11:45,576 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:45,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:46,105 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:11:46,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:11:46,111 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786844751] [2020-01-16 18:11:46,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:46,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:46,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580854355] [2020-01-16 18:11:46,111 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:46,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:46,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:46,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:46,111 INFO L87 Difference]: Start difference. First operand 1583 states and 7049 transitions. Second operand 11 states. [2020-01-16 18:11:46,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:46,292 INFO L93 Difference]: Finished difference Result 2987 states and 11791 transitions. [2020-01-16 18:11:46,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:46,292 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:46,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:46,299 INFO L225 Difference]: With dead ends: 2987 [2020-01-16 18:11:46,299 INFO L226 Difference]: Without dead ends: 2955 [2020-01-16 18:11:46,299 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:11:46,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2955 states. [2020-01-16 18:11:46,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2955 to 1568. [2020-01-16 18:11:46,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 18:11:46,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7017 transitions. [2020-01-16 18:11:46,367 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7017 transitions. Word has length 28 [2020-01-16 18:11:46,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:46,368 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7017 transitions. [2020-01-16 18:11:46,368 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:46,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7017 transitions. [2020-01-16 18:11:46,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:46,370 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:46,370 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 18:11:46,370 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 18:11:46,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:46,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1461286794, now seen corresponding path program 661 times [2020-01-16 18:11:46,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:46,371 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307567833] [2020-01-16 18:11:46,371 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:46,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:46,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:11:46,905 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307567833] [2020-01-16 18:11:46,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:46,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:46,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933724689] [2020-01-16 18:11:46,905 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:46,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:46,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:46,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:46,906 INFO L87 Difference]: Start difference. First operand 1568 states and 7017 transitions. Second operand 11 states. [2020-01-16 18:11:47,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:47,076 INFO L93 Difference]: Finished difference Result 2959 states and 11740 transitions. [2020-01-16 18:11:47,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:47,077 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:47,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:47,083 INFO L225 Difference]: With dead ends: 2959 [2020-01-16 18:11:47,084 INFO L226 Difference]: Without dead ends: 2943 [2020-01-16 18:11:47,084 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 18:11:47,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2943 states. [2020-01-16 18:11:47,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2943 to 1576. [2020-01-16 18:11:47,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:11:47,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7039 transitions. [2020-01-16 18:11:47,157 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7039 transitions. Word has length 28 [2020-01-16 18:11:47,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:47,157 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7039 transitions. [2020-01-16 18:11:47,157 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:47,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7039 transitions. [2020-01-16 18:11:47,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:47,160 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:47,160 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 18:11:47,160 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 18:11:47,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:47,160 INFO L82 PathProgramCache]: Analyzing trace with hash 889831988, now seen corresponding path program 662 times [2020-01-16 18:11:47,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:47,160 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180042999] [2020-01-16 18:11:47,161 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:47,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:47,681 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:11:47,686 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 18:11:47,687 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180042999] [2020-01-16 18:11:47,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:47,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:47,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484836190] [2020-01-16 18:11:47,687 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:47,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:47,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:47,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:47,687 INFO L87 Difference]: Start difference. First operand 1576 states and 7039 transitions. Second operand 11 states. [2020-01-16 18:11:47,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:47,891 INFO L93 Difference]: Finished difference Result 2957 states and 11732 transitions. [2020-01-16 18:11:47,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:47,891 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:47,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:47,898 INFO L225 Difference]: With dead ends: 2957 [2020-01-16 18:11:47,898 INFO L226 Difference]: Without dead ends: 2939 [2020-01-16 18:11:47,898 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:11:47,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2939 states. [2020-01-16 18:11:47,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2939 to 1572. [2020-01-16 18:11:47,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:11:47,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7028 transitions. [2020-01-16 18:11:47,965 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7028 transitions. Word has length 28 [2020-01-16 18:11:47,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:47,965 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7028 transitions. [2020-01-16 18:11:47,965 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:47,965 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7028 transitions. [2020-01-16 18:11:47,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:47,967 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:47,967 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 18:11:47,967 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 18:11:47,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:47,968 INFO L82 PathProgramCache]: Analyzing trace with hash 388201414, now seen corresponding path program 663 times [2020-01-16 18:11:47,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:47,968 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35947408] [2020-01-16 18:11:47,968 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:47,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:48,482 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 18:11:48,482 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35947408] [2020-01-16 18:11:48,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:48,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:48,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432181584] [2020-01-16 18:11:48,483 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:48,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:48,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:48,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:48,483 INFO L87 Difference]: Start difference. First operand 1572 states and 7028 transitions. Second operand 11 states. [2020-01-16 18:11:48,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:48,667 INFO L93 Difference]: Finished difference Result 2964 states and 11748 transitions. [2020-01-16 18:11:48,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:48,668 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:48,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:48,675 INFO L225 Difference]: With dead ends: 2964 [2020-01-16 18:11:48,676 INFO L226 Difference]: Without dead ends: 2948 [2020-01-16 18:11:48,676 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 18:11:48,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2948 states. [2020-01-16 18:11:48,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2948 to 1578. [2020-01-16 18:11:48,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:11:48,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7039 transitions. [2020-01-16 18:11:48,745 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7039 transitions. Word has length 28 [2020-01-16 18:11:48,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:48,745 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7039 transitions. [2020-01-16 18:11:48,746 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:48,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7039 transitions. [2020-01-16 18:11:48,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:48,748 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:48,748 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 18:11:48,748 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 18:11:48,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:48,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1306151604, now seen corresponding path program 664 times [2020-01-16 18:11:48,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:48,748 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836165180] [2020-01-16 18:11:48,748 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:48,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:49,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:11:49,281 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836165180] [2020-01-16 18:11:49,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:49,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:49,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796262889] [2020-01-16 18:11:49,281 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:49,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:49,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:49,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:49,282 INFO L87 Difference]: Start difference. First operand 1578 states and 7039 transitions. Second operand 11 states. [2020-01-16 18:11:49,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:49,466 INFO L93 Difference]: Finished difference Result 2965 states and 11744 transitions. [2020-01-16 18:11:49,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:49,466 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:49,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:49,474 INFO L225 Difference]: With dead ends: 2965 [2020-01-16 18:11:49,474 INFO L226 Difference]: Without dead ends: 2942 [2020-01-16 18:11:49,474 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 18:11:49,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2020-01-16 18:11:49,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 1572. [2020-01-16 18:11:49,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:11:49,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7024 transitions. [2020-01-16 18:11:49,541 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7024 transitions. Word has length 28 [2020-01-16 18:11:49,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:49,541 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7024 transitions. [2020-01-16 18:11:49,542 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:49,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7024 transitions. [2020-01-16 18:11:49,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:49,544 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:49,544 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 18:11:49,544 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 18:11:49,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:49,544 INFO L82 PathProgramCache]: Analyzing trace with hash -718483194, now seen corresponding path program 665 times [2020-01-16 18:11:49,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:49,544 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995815733] [2020-01-16 18:11:49,545 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:49,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:50,053 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 18:11:50,053 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995815733] [2020-01-16 18:11:50,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:50,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:50,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690682961] [2020-01-16 18:11:50,054 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:50,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:50,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:50,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:50,054 INFO L87 Difference]: Start difference. First operand 1572 states and 7024 transitions. Second operand 11 states. [2020-01-16 18:11:50,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:50,239 INFO L93 Difference]: Finished difference Result 2958 states and 11730 transitions. [2020-01-16 18:11:50,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:50,240 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:50,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:50,247 INFO L225 Difference]: With dead ends: 2958 [2020-01-16 18:11:50,248 INFO L226 Difference]: Without dead ends: 2944 [2020-01-16 18:11:50,248 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 18:11:50,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2944 states. [2020-01-16 18:11:50,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2944 to 1576. [2020-01-16 18:11:50,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:11:50,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7031 transitions. [2020-01-16 18:11:50,344 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7031 transitions. Word has length 28 [2020-01-16 18:11:50,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:50,345 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7031 transitions. [2020-01-16 18:11:50,345 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:50,345 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7031 transitions. [2020-01-16 18:11:50,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:50,348 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:50,348 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 18:11:50,348 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 18:11:50,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:50,348 INFO L82 PathProgramCache]: Analyzing trace with hash 770921802, now seen corresponding path program 666 times [2020-01-16 18:11:50,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:50,349 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264743445] [2020-01-16 18:11:50,349 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:50,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:50,872 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 18:11:50,873 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264743445] [2020-01-16 18:11:50,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:50,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:50,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880049113] [2020-01-16 18:11:50,873 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:50,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:50,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:50,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:50,873 INFO L87 Difference]: Start difference. First operand 1576 states and 7031 transitions. Second operand 11 states. [2020-01-16 18:11:51,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:51,055 INFO L93 Difference]: Finished difference Result 2961 states and 11732 transitions. [2020-01-16 18:11:51,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:51,056 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:51,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:51,063 INFO L225 Difference]: With dead ends: 2961 [2020-01-16 18:11:51,063 INFO L226 Difference]: Without dead ends: 2936 [2020-01-16 18:11:51,063 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 18:11:51,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2936 states. [2020-01-16 18:11:51,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2936 to 1568. [2020-01-16 18:11:51,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 18:11:51,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7013 transitions. [2020-01-16 18:11:51,129 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7013 transitions. Word has length 28 [2020-01-16 18:11:51,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:51,130 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7013 transitions. [2020-01-16 18:11:51,130 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:51,130 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7013 transitions. [2020-01-16 18:11:51,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:51,132 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:51,132 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:11:51,132 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 18:11:51,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:51,132 INFO L82 PathProgramCache]: Analyzing trace with hash -2078474900, now seen corresponding path program 667 times [2020-01-16 18:11:51,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:51,132 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008928917] [2020-01-16 18:11:51,133 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:51,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:51,654 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 18:11:51,655 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008928917] [2020-01-16 18:11:51,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:51,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:51,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437310463] [2020-01-16 18:11:51,655 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:51,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:51,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:51,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:51,655 INFO L87 Difference]: Start difference. First operand 1568 states and 7013 transitions. Second operand 11 states. [2020-01-16 18:11:51,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:51,791 INFO L93 Difference]: Finished difference Result 2976 states and 11769 transitions. [2020-01-16 18:11:51,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:51,791 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:51,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:51,798 INFO L225 Difference]: With dead ends: 2976 [2020-01-16 18:11:51,798 INFO L226 Difference]: Without dead ends: 2956 [2020-01-16 18:11:51,799 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:11:51,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2020-01-16 18:11:51,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 1578. [2020-01-16 18:11:51,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:11:51,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7039 transitions. [2020-01-16 18:11:51,867 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7039 transitions. Word has length 28 [2020-01-16 18:11:51,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:51,867 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7039 transitions. [2020-01-16 18:11:51,867 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:51,867 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7039 transitions. [2020-01-16 18:11:51,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:51,869 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:51,869 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 18:11:51,869 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 18:11:51,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:51,870 INFO L82 PathProgramCache]: Analyzing trace with hash 900335092, now seen corresponding path program 668 times [2020-01-16 18:11:51,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:51,870 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926420948] [2020-01-16 18:11:51,870 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:51,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:52,396 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 18:11:52,396 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926420948] [2020-01-16 18:11:52,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:52,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:52,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080722541] [2020-01-16 18:11:52,397 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:52,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:52,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:52,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:52,397 INFO L87 Difference]: Start difference. First operand 1578 states and 7039 transitions. Second operand 11 states. [2020-01-16 18:11:52,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:52,567 INFO L93 Difference]: Finished difference Result 2970 states and 11753 transitions. [2020-01-16 18:11:52,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:52,568 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:52,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:52,574 INFO L225 Difference]: With dead ends: 2970 [2020-01-16 18:11:52,575 INFO L226 Difference]: Without dead ends: 2951 [2020-01-16 18:11:52,575 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 18:11:52,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2020-01-16 18:11:52,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 1573. [2020-01-16 18:11:52,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:11:52,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7026 transitions. [2020-01-16 18:11:52,641 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7026 transitions. Word has length 28 [2020-01-16 18:11:52,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:52,642 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7026 transitions. [2020-01-16 18:11:52,642 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:52,642 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7026 transitions. [2020-01-16 18:11:52,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:52,644 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:52,644 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:11:52,644 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 18:11:52,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:52,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1143407016, now seen corresponding path program 669 times [2020-01-16 18:11:52,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:52,644 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41339902] [2020-01-16 18:11:52,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:52,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:53,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:11:53,191 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41339902] [2020-01-16 18:11:53,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:53,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:53,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474997421] [2020-01-16 18:11:53,192 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:53,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:53,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:53,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:53,192 INFO L87 Difference]: Start difference. First operand 1573 states and 7026 transitions. Second operand 11 states. [2020-01-16 18:11:53,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:53,330 INFO L93 Difference]: Finished difference Result 2982 states and 11779 transitions. [2020-01-16 18:11:53,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:53,330 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:53,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:53,337 INFO L225 Difference]: With dead ends: 2982 [2020-01-16 18:11:53,337 INFO L226 Difference]: Without dead ends: 2962 [2020-01-16 18:11:53,337 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 18:11:53,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2962 states. [2020-01-16 18:11:53,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2962 to 1581. [2020-01-16 18:11:53,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:11:53,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7040 transitions. [2020-01-16 18:11:53,406 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7040 transitions. Word has length 28 [2020-01-16 18:11:53,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:53,406 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7040 transitions. [2020-01-16 18:11:53,406 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:53,406 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7040 transitions. [2020-01-16 18:11:53,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:53,408 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:53,409 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:11:53,409 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 18:11:53,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:53,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1316654708, now seen corresponding path program 670 times [2020-01-16 18:11:53,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:53,409 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858493156] [2020-01-16 18:11:53,409 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:53,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:53,924 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 18:11:53,925 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858493156] [2020-01-16 18:11:53,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:53,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:53,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682557794] [2020-01-16 18:11:53,925 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:53,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:53,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:53,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:53,925 INFO L87 Difference]: Start difference. First operand 1581 states and 7040 transitions. Second operand 11 states. [2020-01-16 18:11:54,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:54,093 INFO L93 Difference]: Finished difference Result 2979 states and 11766 transitions. [2020-01-16 18:11:54,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:54,093 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:54,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:54,101 INFO L225 Difference]: With dead ends: 2979 [2020-01-16 18:11:54,101 INFO L226 Difference]: Without dead ends: 2954 [2020-01-16 18:11:54,101 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:11:54,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2020-01-16 18:11:54,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 1573. [2020-01-16 18:11:54,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:11:54,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7021 transitions. [2020-01-16 18:11:54,172 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7021 transitions. Word has length 28 [2020-01-16 18:11:54,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:54,173 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7021 transitions. [2020-01-16 18:11:54,173 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:54,173 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7021 transitions. [2020-01-16 18:11:54,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:54,175 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:54,175 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:11:54,176 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 18:11:54,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:54,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1976046248, now seen corresponding path program 671 times [2020-01-16 18:11:54,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:54,176 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840745811] [2020-01-16 18:11:54,176 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:54,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:54,703 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 18:11:54,704 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840745811] [2020-01-16 18:11:54,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:54,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:54,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168100956] [2020-01-16 18:11:54,704 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:54,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:54,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:54,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:54,704 INFO L87 Difference]: Start difference. First operand 1573 states and 7021 transitions. Second operand 11 states. [2020-01-16 18:11:54,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:54,879 INFO L93 Difference]: Finished difference Result 2966 states and 11741 transitions. [2020-01-16 18:11:54,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:54,879 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:54,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:54,887 INFO L225 Difference]: With dead ends: 2966 [2020-01-16 18:11:54,887 INFO L226 Difference]: Without dead ends: 2952 [2020-01-16 18:11:54,887 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:11:54,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2020-01-16 18:11:54,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 1577. [2020-01-16 18:11:54,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:11:54,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7028 transitions. [2020-01-16 18:11:54,954 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7028 transitions. Word has length 28 [2020-01-16 18:11:54,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:54,954 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7028 transitions. [2020-01-16 18:11:54,954 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:54,954 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7028 transitions. [2020-01-16 18:11:54,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:54,956 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:54,956 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 18:11:54,956 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 18:11:54,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:54,957 INFO L82 PathProgramCache]: Analyzing trace with hash -829516052, now seen corresponding path program 672 times [2020-01-16 18:11:54,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:54,957 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689609723] [2020-01-16 18:11:54,957 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:54,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:55,480 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 18:11:55,481 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689609723] [2020-01-16 18:11:55,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:55,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:55,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399946186] [2020-01-16 18:11:55,481 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:55,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:55,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:55,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:55,482 INFO L87 Difference]: Start difference. First operand 1577 states and 7028 transitions. Second operand 11 states. [2020-01-16 18:11:55,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:55,662 INFO L93 Difference]: Finished difference Result 2969 states and 11743 transitions. [2020-01-16 18:11:55,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:55,662 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:55,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:55,669 INFO L225 Difference]: With dead ends: 2969 [2020-01-16 18:11:55,670 INFO L226 Difference]: Without dead ends: 2938 [2020-01-16 18:11:55,670 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 18:11:55,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2020-01-16 18:11:55,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 1563. [2020-01-16 18:11:55,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 18:11:55,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 6999 transitions. [2020-01-16 18:11:55,736 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 6999 transitions. Word has length 28 [2020-01-16 18:11:55,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:55,736 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 6999 transitions. [2020-01-16 18:11:55,736 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:55,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 6999 transitions. [2020-01-16 18:11:55,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:55,739 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:55,739 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 18:11:55,739 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 18:11:55,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:55,739 INFO L82 PathProgramCache]: Analyzing trace with hash -2033247324, now seen corresponding path program 673 times [2020-01-16 18:11:55,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:55,739 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277579778] [2020-01-16 18:11:55,739 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:55,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:56,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:11:56,250 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277579778] [2020-01-16 18:11:56,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:56,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:56,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029300757] [2020-01-16 18:11:56,250 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:56,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:56,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:56,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:56,251 INFO L87 Difference]: Start difference. First operand 1563 states and 6999 transitions. Second operand 11 states. [2020-01-16 18:11:56,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:56,431 INFO L93 Difference]: Finished difference Result 2957 states and 11739 transitions. [2020-01-16 18:11:56,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:56,432 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:56,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:56,439 INFO L225 Difference]: With dead ends: 2957 [2020-01-16 18:11:56,439 INFO L226 Difference]: Without dead ends: 2941 [2020-01-16 18:11:56,440 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 18:11:56,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2941 states. [2020-01-16 18:11:56,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2941 to 1577. [2020-01-16 18:11:56,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:11:56,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7044 transitions. [2020-01-16 18:11:56,507 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7044 transitions. Word has length 28 [2020-01-16 18:11:56,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:56,507 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7044 transitions. [2020-01-16 18:11:56,507 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:56,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7044 transitions. [2020-01-16 18:11:56,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:56,509 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:56,509 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 18:11:56,509 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 18:11:56,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:56,510 INFO L82 PathProgramCache]: Analyzing trace with hash -543842328, now seen corresponding path program 674 times [2020-01-16 18:11:56,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:56,510 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344848573] [2020-01-16 18:11:56,510 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:56,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:57,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:11:57,027 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344848573] [2020-01-16 18:11:57,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:57,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:57,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139241529] [2020-01-16 18:11:57,027 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:57,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:57,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:57,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:57,028 INFO L87 Difference]: Start difference. First operand 1577 states and 7044 transitions. Second operand 11 states. [2020-01-16 18:11:57,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:57,236 INFO L93 Difference]: Finished difference Result 2959 states and 11737 transitions. [2020-01-16 18:11:57,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:57,236 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:57,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:57,243 INFO L225 Difference]: With dead ends: 2959 [2020-01-16 18:11:57,243 INFO L226 Difference]: Without dead ends: 2935 [2020-01-16 18:11:57,243 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 18:11:57,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2935 states. [2020-01-16 18:11:57,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2935 to 1571. [2020-01-16 18:11:57,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:11:57,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7029 transitions. [2020-01-16 18:11:57,310 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7029 transitions. Word has length 28 [2020-01-16 18:11:57,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:57,310 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7029 transitions. [2020-01-16 18:11:57,310 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:57,310 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7029 transitions. [2020-01-16 18:11:57,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:57,313 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:57,313 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 18:11:57,313 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 18:11:57,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:57,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1495391746, now seen corresponding path program 675 times [2020-01-16 18:11:57,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:57,313 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702083962] [2020-01-16 18:11:57,313 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:57,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:57,829 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 18:11:57,830 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702083962] [2020-01-16 18:11:57,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:57,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:57,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417367312] [2020-01-16 18:11:57,830 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:57,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:57,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:57,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:57,830 INFO L87 Difference]: Start difference. First operand 1571 states and 7029 transitions. Second operand 11 states. [2020-01-16 18:11:58,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:58,017 INFO L93 Difference]: Finished difference Result 2951 states and 11721 transitions. [2020-01-16 18:11:58,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:58,017 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:58,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:58,024 INFO L225 Difference]: With dead ends: 2951 [2020-01-16 18:11:58,024 INFO L226 Difference]: Without dead ends: 2935 [2020-01-16 18:11:58,024 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 18:11:58,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2935 states. [2020-01-16 18:11:58,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2935 to 1575. [2020-01-16 18:11:58,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:11:58,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7036 transitions. [2020-01-16 18:11:58,091 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7036 transitions. Word has length 28 [2020-01-16 18:11:58,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:58,091 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7036 transitions. [2020-01-16 18:11:58,091 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:58,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7036 transitions. [2020-01-16 18:11:58,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:58,093 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:58,093 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 18:11:58,093 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 18:11:58,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:58,093 INFO L82 PathProgramCache]: Analyzing trace with hash -2066846552, now seen corresponding path program 676 times [2020-01-16 18:11:58,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:58,094 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420595164] [2020-01-16 18:11:58,094 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:58,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:58,607 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 18:11:58,607 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420595164] [2020-01-16 18:11:58,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:58,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:58,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080477246] [2020-01-16 18:11:58,607 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:58,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:58,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:58,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:58,608 INFO L87 Difference]: Start difference. First operand 1575 states and 7036 transitions. Second operand 11 states. [2020-01-16 18:11:58,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:58,789 INFO L93 Difference]: Finished difference Result 2949 states and 11713 transitions. [2020-01-16 18:11:58,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:58,790 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:58,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:58,797 INFO L225 Difference]: With dead ends: 2949 [2020-01-16 18:11:58,797 INFO L226 Difference]: Without dead ends: 2931 [2020-01-16 18:11:58,797 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:11:58,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2931 states. [2020-01-16 18:11:58,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2931 to 1571. [2020-01-16 18:11:58,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:11:58,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7025 transitions. [2020-01-16 18:11:58,863 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7025 transitions. Word has length 28 [2020-01-16 18:11:58,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:58,864 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7025 transitions. [2020-01-16 18:11:58,864 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:58,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7025 transitions. [2020-01-16 18:11:58,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:58,866 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:58,866 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 18:11:58,866 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 18:11:58,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:58,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1079072130, now seen corresponding path program 677 times [2020-01-16 18:11:58,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:58,867 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237984288] [2020-01-16 18:11:58,867 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:58,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:11:59,402 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 18:11:59,403 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237984288] [2020-01-16 18:11:59,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:11:59,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:11:59,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164118270] [2020-01-16 18:11:59,403 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:11:59,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:11:59,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:11:59,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:11:59,404 INFO L87 Difference]: Start difference. First operand 1571 states and 7025 transitions. Second operand 11 states. [2020-01-16 18:11:59,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:11:59,586 INFO L93 Difference]: Finished difference Result 2955 states and 11725 transitions. [2020-01-16 18:11:59,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:11:59,586 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:11:59,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:11:59,593 INFO L225 Difference]: With dead ends: 2955 [2020-01-16 18:11:59,593 INFO L226 Difference]: Without dead ends: 2937 [2020-01-16 18:11:59,593 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:11:59,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2020-01-16 18:11:59,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 1575. [2020-01-16 18:11:59,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:11:59,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7032 transitions. [2020-01-16 18:11:59,660 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7032 transitions. Word has length 28 [2020-01-16 18:11:59,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:11:59,660 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7032 transitions. [2020-01-16 18:11:59,661 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:11:59,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7032 transitions. [2020-01-16 18:11:59,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:11:59,663 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:11:59,663 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:11:59,663 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 18:11:59,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:11:59,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1155035364, now seen corresponding path program 678 times [2020-01-16 18:11:59,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:11:59,663 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601147769] [2020-01-16 18:11:59,663 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:11:59,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:00,182 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 18:12:00,183 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601147769] [2020-01-16 18:12:00,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:00,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:00,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326620860] [2020-01-16 18:12:00,183 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:00,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:00,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:00,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:00,184 INFO L87 Difference]: Start difference. First operand 1575 states and 7032 transitions. Second operand 11 states. [2020-01-16 18:12:00,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:00,399 INFO L93 Difference]: Finished difference Result 2951 states and 11713 transitions. [2020-01-16 18:12:00,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:00,400 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:00,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:00,407 INFO L225 Difference]: With dead ends: 2951 [2020-01-16 18:12:00,407 INFO L226 Difference]: Without dead ends: 2929 [2020-01-16 18:12:00,407 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:12:00,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2929 states. [2020-01-16 18:12:00,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2929 to 1567. [2020-01-16 18:12:00,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:12:00,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7014 transitions. [2020-01-16 18:12:00,474 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7014 transitions. Word has length 28 [2020-01-16 18:12:00,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:00,474 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7014 transitions. [2020-01-16 18:12:00,474 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:00,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7014 transitions. [2020-01-16 18:12:00,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:00,477 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:00,477 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 18:12:00,477 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 18:12:00,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:00,477 INFO L82 PathProgramCache]: Analyzing trace with hash -939155736, now seen corresponding path program 679 times [2020-01-16 18:12:00,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:00,477 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88991027] [2020-01-16 18:12:00,477 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:01,000 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-01-16 18:12:01,007 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 18:12:01,007 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88991027] [2020-01-16 18:12:01,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:01,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:01,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912140821] [2020-01-16 18:12:01,008 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:01,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:01,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:01,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:01,008 INFO L87 Difference]: Start difference. First operand 1567 states and 7014 transitions. Second operand 11 states. [2020-01-16 18:12:01,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:01,202 INFO L93 Difference]: Finished difference Result 2967 states and 11764 transitions. [2020-01-16 18:12:01,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:01,203 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:01,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:01,210 INFO L225 Difference]: With dead ends: 2967 [2020-01-16 18:12:01,210 INFO L226 Difference]: Without dead ends: 2951 [2020-01-16 18:12:01,210 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:12:01,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2020-01-16 18:12:01,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 1579. [2020-01-16 18:12:01,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:12:01,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7048 transitions. [2020-01-16 18:12:01,277 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7048 transitions. Word has length 28 [2020-01-16 18:12:01,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:01,277 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7048 transitions. [2020-01-16 18:12:01,277 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:01,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7048 transitions. [2020-01-16 18:12:01,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:01,279 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:01,279 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 18:12:01,279 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 18:12:01,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:01,279 INFO L82 PathProgramCache]: Analyzing trace with hash 550249260, now seen corresponding path program 680 times [2020-01-16 18:12:01,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:01,280 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954829820] [2020-01-16 18:12:01,280 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:01,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:01,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:12:01,809 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954829820] [2020-01-16 18:12:01,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:01,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:01,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048781701] [2020-01-16 18:12:01,809 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:01,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:01,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:01,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:01,810 INFO L87 Difference]: Start difference. First operand 1579 states and 7048 transitions. Second operand 11 states. [2020-01-16 18:12:02,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:02,058 INFO L93 Difference]: Finished difference Result 2969 states and 11762 transitions. [2020-01-16 18:12:02,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:02,059 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:02,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:02,066 INFO L225 Difference]: With dead ends: 2969 [2020-01-16 18:12:02,066 INFO L226 Difference]: Without dead ends: 2945 [2020-01-16 18:12:02,067 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 18:12:02,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2945 states. [2020-01-16 18:12:02,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2945 to 1573. [2020-01-16 18:12:02,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:12:02,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7031 transitions. [2020-01-16 18:12:02,133 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7031 transitions. Word has length 28 [2020-01-16 18:12:02,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:02,133 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7031 transitions. [2020-01-16 18:12:02,133 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:02,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7031 transitions. [2020-01-16 18:12:02,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:02,135 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:02,135 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:12:02,136 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 18:12:02,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:02,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1474385538, now seen corresponding path program 681 times [2020-01-16 18:12:02,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:02,136 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403091953] [2020-01-16 18:12:02,136 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:02,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:02,669 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:12:02,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:12:02,675 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403091953] [2020-01-16 18:12:02,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:02,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:02,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272569342] [2020-01-16 18:12:02,676 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:02,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:02,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:02,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:02,676 INFO L87 Difference]: Start difference. First operand 1573 states and 7031 transitions. Second operand 11 states. [2020-01-16 18:12:02,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:02,918 INFO L93 Difference]: Finished difference Result 2966 states and 11756 transitions. [2020-01-16 18:12:02,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:02,919 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:02,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:02,925 INFO L225 Difference]: With dead ends: 2966 [2020-01-16 18:12:02,925 INFO L226 Difference]: Without dead ends: 2950 [2020-01-16 18:12:02,926 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 18:12:02,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2020-01-16 18:12:02,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 1579. [2020-01-16 18:12:02,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:12:02,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7042 transitions. [2020-01-16 18:12:02,994 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7042 transitions. Word has length 28 [2020-01-16 18:12:02,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:02,994 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7042 transitions. [2020-01-16 18:12:02,994 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:02,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7042 transitions. [2020-01-16 18:12:02,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:02,997 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:02,997 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 18:12:02,997 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 18:12:02,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:02,997 INFO L82 PathProgramCache]: Analyzing trace with hash -556435348, now seen corresponding path program 682 times [2020-01-16 18:12:02,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:02,997 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232495630] [2020-01-16 18:12:02,997 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:02,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:03,521 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 18:12:03,521 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232495630] [2020-01-16 18:12:03,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:03,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:03,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720871429] [2020-01-16 18:12:03,522 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:03,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:03,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:03,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:03,522 INFO L87 Difference]: Start difference. First operand 1579 states and 7042 transitions. Second operand 11 states. [2020-01-16 18:12:03,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:03,719 INFO L93 Difference]: Finished difference Result 2967 states and 11752 transitions. [2020-01-16 18:12:03,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:03,719 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:03,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:03,727 INFO L225 Difference]: With dead ends: 2967 [2020-01-16 18:12:03,727 INFO L226 Difference]: Without dead ends: 2944 [2020-01-16 18:12:03,727 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:12:03,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2944 states. [2020-01-16 18:12:03,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2944 to 1573. [2020-01-16 18:12:03,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:12:03,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7025 transitions. [2020-01-16 18:12:03,795 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7025 transitions. Word has length 28 [2020-01-16 18:12:03,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:03,795 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7025 transitions. [2020-01-16 18:12:03,795 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:03,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7025 transitions. [2020-01-16 18:12:03,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:03,798 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:03,798 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 18:12:03,798 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 18:12:03,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:03,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1058065922, now seen corresponding path program 683 times [2020-01-16 18:12:03,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:03,798 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114582722] [2020-01-16 18:12:03,798 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:03,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:04,316 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 18:12:04,323 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 18:12:04,323 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114582722] [2020-01-16 18:12:04,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:04,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:04,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276702700] [2020-01-16 18:12:04,323 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:04,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:04,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:04,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:04,324 INFO L87 Difference]: Start difference. First operand 1573 states and 7025 transitions. Second operand 11 states. [2020-01-16 18:12:04,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:04,509 INFO L93 Difference]: Finished difference Result 2971 states and 11761 transitions. [2020-01-16 18:12:04,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:04,509 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:04,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:04,517 INFO L225 Difference]: With dead ends: 2971 [2020-01-16 18:12:04,517 INFO L226 Difference]: Without dead ends: 2953 [2020-01-16 18:12:04,517 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 18:12:04,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2953 states. [2020-01-16 18:12:04,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2953 to 1580. [2020-01-16 18:12:04,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:12:04,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7038 transitions. [2020-01-16 18:12:04,584 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7038 transitions. Word has length 28 [2020-01-16 18:12:04,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:04,585 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7038 transitions. [2020-01-16 18:12:04,585 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:04,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7038 transitions. [2020-01-16 18:12:04,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:04,587 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:04,587 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:12:04,587 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 18:12:04,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:04,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1629520728, now seen corresponding path program 684 times [2020-01-16 18:12:04,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:04,587 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882548334] [2020-01-16 18:12:04,588 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:04,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:05,129 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 18:12:05,129 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882548334] [2020-01-16 18:12:05,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:05,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:05,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026759940] [2020-01-16 18:12:05,130 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:05,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:05,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:05,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:05,130 INFO L87 Difference]: Start difference. First operand 1580 states and 7038 transitions. Second operand 11 states. [2020-01-16 18:12:05,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:05,319 INFO L93 Difference]: Finished difference Result 2970 states and 11752 transitions. [2020-01-16 18:12:05,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:05,319 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:05,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:05,326 INFO L225 Difference]: With dead ends: 2970 [2020-01-16 18:12:05,326 INFO L226 Difference]: Without dead ends: 2940 [2020-01-16 18:12:05,326 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:12:05,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2940 states. [2020-01-16 18:12:05,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2940 to 1567. [2020-01-16 18:12:05,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:12:05,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7010 transitions. [2020-01-16 18:12:05,393 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7010 transitions. Word has length 28 [2020-01-16 18:12:05,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:05,393 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7010 transitions. [2020-01-16 18:12:05,393 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:05,393 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7010 transitions. [2020-01-16 18:12:05,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:05,396 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:05,396 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:12:05,396 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 18:12:05,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:05,396 INFO L82 PathProgramCache]: Analyzing trace with hash -907646424, now seen corresponding path program 685 times [2020-01-16 18:12:05,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:05,396 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317455990] [2020-01-16 18:12:05,396 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:05,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:05,923 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 18:12:05,923 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317455990] [2020-01-16 18:12:05,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:05,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:05,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898978488] [2020-01-16 18:12:05,924 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:05,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:05,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:05,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:05,924 INFO L87 Difference]: Start difference. First operand 1567 states and 7010 transitions. Second operand 11 states. [2020-01-16 18:12:06,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:06,107 INFO L93 Difference]: Finished difference Result 2950 states and 11715 transitions. [2020-01-16 18:12:06,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:06,108 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:06,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:06,115 INFO L225 Difference]: With dead ends: 2950 [2020-01-16 18:12:06,116 INFO L226 Difference]: Without dead ends: 2934 [2020-01-16 18:12:06,116 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:12:06,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2934 states. [2020-01-16 18:12:06,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2934 to 1575. [2020-01-16 18:12:06,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:12:06,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7032 transitions. [2020-01-16 18:12:06,183 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7032 transitions. Word has length 28 [2020-01-16 18:12:06,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:06,183 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7032 transitions. [2020-01-16 18:12:06,183 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:06,183 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7032 transitions. [2020-01-16 18:12:06,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:06,185 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:06,186 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 18:12:06,186 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 18:12:06,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:06,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1479101230, now seen corresponding path program 686 times [2020-01-16 18:12:06,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:06,186 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159899701] [2020-01-16 18:12:06,186 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:06,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:06,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:12:06,701 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159899701] [2020-01-16 18:12:06,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:06,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:06,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059497052] [2020-01-16 18:12:06,701 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:06,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:06,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:06,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:06,702 INFO L87 Difference]: Start difference. First operand 1575 states and 7032 transitions. Second operand 11 states. [2020-01-16 18:12:06,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:06,883 INFO L93 Difference]: Finished difference Result 2948 states and 11707 transitions. [2020-01-16 18:12:06,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:06,884 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:06,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:06,891 INFO L225 Difference]: With dead ends: 2948 [2020-01-16 18:12:06,892 INFO L226 Difference]: Without dead ends: 2930 [2020-01-16 18:12:06,892 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:12:06,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2020-01-16 18:12:06,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1571. [2020-01-16 18:12:06,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:12:06,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7021 transitions. [2020-01-16 18:12:06,958 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7021 transitions. Word has length 28 [2020-01-16 18:12:06,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:06,958 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7021 transitions. [2020-01-16 18:12:06,958 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:06,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7021 transitions. [2020-01-16 18:12:06,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:06,960 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:06,960 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 18:12:06,960 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 18:12:06,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:06,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1980731804, now seen corresponding path program 687 times [2020-01-16 18:12:06,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:06,961 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367915661] [2020-01-16 18:12:06,961 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:06,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:07,486 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 18:12:07,486 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367915661] [2020-01-16 18:12:07,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:07,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:07,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158960096] [2020-01-16 18:12:07,487 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:07,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:07,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:07,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:07,487 INFO L87 Difference]: Start difference. First operand 1571 states and 7021 transitions. Second operand 11 states. [2020-01-16 18:12:07,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:07,699 INFO L93 Difference]: Finished difference Result 2955 states and 11723 transitions. [2020-01-16 18:12:07,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:07,699 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:07,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:07,706 INFO L225 Difference]: With dead ends: 2955 [2020-01-16 18:12:07,707 INFO L226 Difference]: Without dead ends: 2939 [2020-01-16 18:12:07,707 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 18:12:07,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2939 states. [2020-01-16 18:12:07,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2939 to 1577. [2020-01-16 18:12:07,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:12:07,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7032 transitions. [2020-01-16 18:12:07,774 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7032 transitions. Word has length 28 [2020-01-16 18:12:07,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:07,774 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7032 transitions. [2020-01-16 18:12:07,774 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:07,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7032 transitions. [2020-01-16 18:12:07,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:07,776 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:07,777 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 18:12:07,777 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 18:12:07,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:07,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1062781614, now seen corresponding path program 688 times [2020-01-16 18:12:07,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:07,777 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949094992] [2020-01-16 18:12:07,777 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:07,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:08,301 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:12:08,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:12:08,308 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949094992] [2020-01-16 18:12:08,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:08,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:08,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680503268] [2020-01-16 18:12:08,308 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:08,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:08,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:08,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:08,309 INFO L87 Difference]: Start difference. First operand 1577 states and 7032 transitions. Second operand 11 states. [2020-01-16 18:12:08,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:08,511 INFO L93 Difference]: Finished difference Result 2956 states and 11719 transitions. [2020-01-16 18:12:08,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:08,512 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:08,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:08,519 INFO L225 Difference]: With dead ends: 2956 [2020-01-16 18:12:08,519 INFO L226 Difference]: Without dead ends: 2933 [2020-01-16 18:12:08,520 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:12:08,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2933 states. [2020-01-16 18:12:08,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2933 to 1571. [2020-01-16 18:12:08,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:12:08,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7017 transitions. [2020-01-16 18:12:08,587 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7017 transitions. Word has length 28 [2020-01-16 18:12:08,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:08,588 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7017 transitions. [2020-01-16 18:12:08,588 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:08,588 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7017 transitions. [2020-01-16 18:12:08,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:08,590 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:08,590 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:12:08,590 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 18:12:08,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:08,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1207550884, now seen corresponding path program 689 times [2020-01-16 18:12:08,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:08,590 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901040654] [2020-01-16 18:12:08,591 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:08,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:09,118 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 18:12:09,118 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901040654] [2020-01-16 18:12:09,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:09,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:09,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623710093] [2020-01-16 18:12:09,118 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:09,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:09,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:09,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:09,119 INFO L87 Difference]: Start difference. First operand 1571 states and 7017 transitions. Second operand 11 states. [2020-01-16 18:12:09,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:09,300 INFO L93 Difference]: Finished difference Result 2949 states and 11705 transitions. [2020-01-16 18:12:09,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:09,300 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:09,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:09,308 INFO L225 Difference]: With dead ends: 2949 [2020-01-16 18:12:09,308 INFO L226 Difference]: Without dead ends: 2935 [2020-01-16 18:12:09,308 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 18:12:09,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2935 states. [2020-01-16 18:12:09,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2935 to 1575. [2020-01-16 18:12:09,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:12:09,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7024 transitions. [2020-01-16 18:12:09,375 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7024 transitions. Word has length 28 [2020-01-16 18:12:09,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:09,375 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7024 transitions. [2020-01-16 18:12:09,375 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:09,375 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7024 transitions. [2020-01-16 18:12:09,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:09,377 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:09,377 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 18:12:09,377 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 18:12:09,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:09,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1598011416, now seen corresponding path program 690 times [2020-01-16 18:12:09,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:09,378 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573016195] [2020-01-16 18:12:09,378 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:09,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:09,910 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 18:12:09,910 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573016195] [2020-01-16 18:12:09,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:09,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:09,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534789184] [2020-01-16 18:12:09,911 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:09,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:09,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:09,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:09,912 INFO L87 Difference]: Start difference. First operand 1575 states and 7024 transitions. Second operand 11 states. [2020-01-16 18:12:10,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:10,102 INFO L93 Difference]: Finished difference Result 2952 states and 11707 transitions. [2020-01-16 18:12:10,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:10,103 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:10,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:10,110 INFO L225 Difference]: With dead ends: 2952 [2020-01-16 18:12:10,111 INFO L226 Difference]: Without dead ends: 2927 [2020-01-16 18:12:10,111 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:12:10,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2927 states. [2020-01-16 18:12:10,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2927 to 1567. [2020-01-16 18:12:10,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:12:10,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7006 transitions. [2020-01-16 18:12:10,177 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7006 transitions. Word has length 28 [2020-01-16 18:12:10,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:10,177 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7006 transitions. [2020-01-16 18:12:10,177 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:10,177 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7006 transitions. [2020-01-16 18:12:10,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:10,179 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:10,179 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 18:12:10,180 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 18:12:10,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:10,180 INFO L82 PathProgramCache]: Analyzing trace with hash 602764780, now seen corresponding path program 691 times [2020-01-16 18:12:10,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:10,180 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060472989] [2020-01-16 18:12:10,180 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:10,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:10,699 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 18:12:10,700 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060472989] [2020-01-16 18:12:10,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:10,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:10,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575936499] [2020-01-16 18:12:10,700 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:10,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:10,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:10,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:10,701 INFO L87 Difference]: Start difference. First operand 1567 states and 7006 transitions. Second operand 11 states. [2020-01-16 18:12:10,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:10,900 INFO L93 Difference]: Finished difference Result 2957 states and 11726 transitions. [2020-01-16 18:12:10,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:10,900 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:10,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:10,907 INFO L225 Difference]: With dead ends: 2957 [2020-01-16 18:12:10,907 INFO L226 Difference]: Without dead ends: 2939 [2020-01-16 18:12:10,908 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 18:12:10,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2939 states. [2020-01-16 18:12:10,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2939 to 1575. [2020-01-16 18:12:10,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:12:10,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7028 transitions. [2020-01-16 18:12:10,974 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7028 transitions. Word has length 28 [2020-01-16 18:12:10,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:10,975 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7028 transitions. [2020-01-16 18:12:10,975 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:10,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7028 transitions. [2020-01-16 18:12:10,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:10,977 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:10,977 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 18:12:10,977 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 18:12:10,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:10,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1458095022, now seen corresponding path program 692 times [2020-01-16 18:12:10,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:10,977 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883990546] [2020-01-16 18:12:10,977 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:10,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:11,503 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 18:12:11,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:12:11,509 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883990546] [2020-01-16 18:12:11,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:11,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:11,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25298959] [2020-01-16 18:12:11,509 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:11,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:11,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:11,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:11,510 INFO L87 Difference]: Start difference. First operand 1575 states and 7028 transitions. Second operand 11 states. [2020-01-16 18:12:11,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:11,687 INFO L93 Difference]: Finished difference Result 2953 states and 11714 transitions. [2020-01-16 18:12:11,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:11,688 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:11,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:11,695 INFO L225 Difference]: With dead ends: 2953 [2020-01-16 18:12:11,695 INFO L226 Difference]: Without dead ends: 2935 [2020-01-16 18:12:11,695 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:12:11,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2935 states. [2020-01-16 18:12:11,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2935 to 1571. [2020-01-16 18:12:11,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:12:11,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7017 transitions. [2020-01-16 18:12:11,763 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7017 transitions. Word has length 28 [2020-01-16 18:12:11,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:11,763 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7017 transitions. [2020-01-16 18:12:11,763 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:11,763 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7017 transitions. [2020-01-16 18:12:11,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:11,765 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:11,765 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 18:12:11,765 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 18:12:11,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:11,766 INFO L82 PathProgramCache]: Analyzing trace with hash -470320600, now seen corresponding path program 693 times [2020-01-16 18:12:11,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:11,766 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972283714] [2020-01-16 18:12:11,766 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:11,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:12,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:12:12,319 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972283714] [2020-01-16 18:12:12,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:12,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:12,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050730194] [2020-01-16 18:12:12,319 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:12,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:12,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:12,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:12,320 INFO L87 Difference]: Start difference. First operand 1571 states and 7017 transitions. Second operand 11 states. [2020-01-16 18:12:12,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:12,519 INFO L93 Difference]: Finished difference Result 2963 states and 11737 transitions. [2020-01-16 18:12:12,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:12,519 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:12,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:12,526 INFO L225 Difference]: With dead ends: 2963 [2020-01-16 18:12:12,526 INFO L226 Difference]: Without dead ends: 2945 [2020-01-16 18:12:12,526 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 18:12:12,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2945 states. [2020-01-16 18:12:12,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2945 to 1578. [2020-01-16 18:12:12,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:12:12,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7030 transitions. [2020-01-16 18:12:12,595 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7030 transitions. Word has length 28 [2020-01-16 18:12:12,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:12,595 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7030 transitions. [2020-01-16 18:12:12,595 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:12,595 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7030 transitions. [2020-01-16 18:12:12,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:12,597 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:12,597 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 18:12:12,598 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 18:12:12,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:12,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1041775406, now seen corresponding path program 694 times [2020-01-16 18:12:12,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:12,598 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351682913] [2020-01-16 18:12:12,598 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:12,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:13,127 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 18:12:13,127 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351682913] [2020-01-16 18:12:13,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:13,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:13,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480183754] [2020-01-16 18:12:13,128 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:13,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:13,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:13,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:13,128 INFO L87 Difference]: Start difference. First operand 1578 states and 7030 transitions. Second operand 11 states. [2020-01-16 18:12:13,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:13,298 INFO L93 Difference]: Finished difference Result 2962 states and 11728 transitions. [2020-01-16 18:12:13,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:13,299 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:13,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:13,306 INFO L225 Difference]: With dead ends: 2962 [2020-01-16 18:12:13,306 INFO L226 Difference]: Without dead ends: 2938 [2020-01-16 18:12:13,307 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 18:12:13,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2020-01-16 18:12:13,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 1571. [2020-01-16 18:12:13,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:12:13,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7013 transitions. [2020-01-16 18:12:13,373 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7013 transitions. Word has length 28 [2020-01-16 18:12:13,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:13,373 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7013 transitions. [2020-01-16 18:12:13,373 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:13,373 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7013 transitions. [2020-01-16 18:12:13,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:13,375 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:13,375 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:12:13,376 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 18:12:13,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:13,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1993324824, now seen corresponding path program 695 times [2020-01-16 18:12:13,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:13,376 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320060768] [2020-01-16 18:12:13,376 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:13,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:13,890 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 18:12:13,890 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320060768] [2020-01-16 18:12:13,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:13,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:13,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956597289] [2020-01-16 18:12:13,891 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:13,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:13,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:13,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:13,891 INFO L87 Difference]: Start difference. First operand 1571 states and 7013 transitions. Second operand 11 states. [2020-01-16 18:12:14,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:14,071 INFO L93 Difference]: Finished difference Result 2952 states and 11708 transitions. [2020-01-16 18:12:14,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:14,071 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:14,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:14,078 INFO L225 Difference]: With dead ends: 2952 [2020-01-16 18:12:14,078 INFO L226 Difference]: Without dead ends: 2938 [2020-01-16 18:12:14,078 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:12:14,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2020-01-16 18:12:14,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 1575. [2020-01-16 18:12:14,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:12:14,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7020 transitions. [2020-01-16 18:12:14,146 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7020 transitions. Word has length 28 [2020-01-16 18:12:14,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:14,146 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7020 transitions. [2020-01-16 18:12:14,146 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:14,146 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7020 transitions. [2020-01-16 18:12:14,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:14,148 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:14,148 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 18:12:14,148 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 18:12:14,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:14,148 INFO L82 PathProgramCache]: Analyzing trace with hash -503919828, now seen corresponding path program 696 times [2020-01-16 18:12:14,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:14,149 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053139978] [2020-01-16 18:12:14,149 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:14,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:14,674 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 18:12:14,675 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053139978] [2020-01-16 18:12:14,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:14,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:14,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427309715] [2020-01-16 18:12:14,675 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:14,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:14,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:14,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:14,675 INFO L87 Difference]: Start difference. First operand 1575 states and 7020 transitions. Second operand 11 states. [2020-01-16 18:12:14,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:14,879 INFO L93 Difference]: Finished difference Result 2955 states and 11710 transitions. [2020-01-16 18:12:14,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:14,880 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:14,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:14,887 INFO L225 Difference]: With dead ends: 2955 [2020-01-16 18:12:14,887 INFO L226 Difference]: Without dead ends: 2926 [2020-01-16 18:12:14,887 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:12:14,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2020-01-16 18:12:14,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 1563. [2020-01-16 18:12:14,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 18:12:14,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 6995 transitions. [2020-01-16 18:12:14,956 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 6995 transitions. Word has length 28 [2020-01-16 18:12:14,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:14,956 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 6995 transitions. [2020-01-16 18:12:14,956 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:14,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 6995 transitions. [2020-01-16 18:12:14,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:14,958 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:14,958 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 18:12:14,958 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 18:12:14,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:14,959 INFO L82 PathProgramCache]: Analyzing trace with hash 647992356, now seen corresponding path program 697 times [2020-01-16 18:12:14,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:14,959 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110345167] [2020-01-16 18:12:14,959 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:14,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:15,515 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 18:12:15,515 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110345167] [2020-01-16 18:12:15,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:15,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:15,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925389096] [2020-01-16 18:12:15,516 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:15,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:15,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:15,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:15,516 INFO L87 Difference]: Start difference. First operand 1563 states and 6995 transitions. Second operand 11 states. [2020-01-16 18:12:15,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:15,662 INFO L93 Difference]: Finished difference Result 3001 states and 11831 transitions. [2020-01-16 18:12:15,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:15,663 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:15,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:15,670 INFO L225 Difference]: With dead ends: 3001 [2020-01-16 18:12:15,671 INFO L226 Difference]: Without dead ends: 2981 [2020-01-16 18:12:15,671 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 18:12:15,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2981 states. [2020-01-16 18:12:15,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2981 to 1586. [2020-01-16 18:12:15,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1586 states. [2020-01-16 18:12:15,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 7060 transitions. [2020-01-16 18:12:15,738 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 7060 transitions. Word has length 28 [2020-01-16 18:12:15,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:15,738 INFO L478 AbstractCegarLoop]: Abstraction has 1586 states and 7060 transitions. [2020-01-16 18:12:15,738 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:15,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 7060 transitions. [2020-01-16 18:12:15,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:15,741 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:15,741 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 18:12:15,741 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 18:12:15,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:15,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1392694854, now seen corresponding path program 698 times [2020-01-16 18:12:15,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:15,741 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872499353] [2020-01-16 18:12:15,741 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:15,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:16,276 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 18:12:16,277 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872499353] [2020-01-16 18:12:16,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:16,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:16,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508596147] [2020-01-16 18:12:16,277 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:16,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:16,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:16,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:16,278 INFO L87 Difference]: Start difference. First operand 1586 states and 7060 transitions. Second operand 11 states. [2020-01-16 18:12:16,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:16,454 INFO L93 Difference]: Finished difference Result 2999 states and 11819 transitions. [2020-01-16 18:12:16,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:16,454 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:16,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:16,461 INFO L225 Difference]: With dead ends: 2999 [2020-01-16 18:12:16,461 INFO L226 Difference]: Without dead ends: 2971 [2020-01-16 18:12:16,461 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:12:16,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2971 states. [2020-01-16 18:12:16,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2971 to 1576. [2020-01-16 18:12:16,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:12:16,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7037 transitions. [2020-01-16 18:12:16,528 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7037 transitions. Word has length 28 [2020-01-16 18:12:16,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:16,528 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7037 transitions. [2020-01-16 18:12:16,528 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:16,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7037 transitions. [2020-01-16 18:12:16,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:16,531 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:16,531 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 18:12:16,531 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 18:12:16,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:16,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1185847934, now seen corresponding path program 699 times [2020-01-16 18:12:16,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:16,531 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989632174] [2020-01-16 18:12:16,531 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:16,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:17,057 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 18:12:17,058 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989632174] [2020-01-16 18:12:17,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:17,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:17,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133911256] [2020-01-16 18:12:17,058 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:17,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:17,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:17,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:17,059 INFO L87 Difference]: Start difference. First operand 1576 states and 7037 transitions. Second operand 11 states. [2020-01-16 18:12:17,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:17,200 INFO L93 Difference]: Finished difference Result 2992 states and 11804 transitions. [2020-01-16 18:12:17,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:17,200 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:17,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:17,208 INFO L225 Difference]: With dead ends: 2992 [2020-01-16 18:12:17,208 INFO L226 Difference]: Without dead ends: 2972 [2020-01-16 18:12:17,208 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 18:12:17,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2972 states. [2020-01-16 18:12:17,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2972 to 1581. [2020-01-16 18:12:17,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:12:17,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7045 transitions. [2020-01-16 18:12:17,275 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7045 transitions. Word has length 28 [2020-01-16 18:12:17,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:17,275 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7045 transitions. [2020-01-16 18:12:17,275 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:17,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7045 transitions. [2020-01-16 18:12:17,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:17,277 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:17,277 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:12:17,278 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 18:12:17,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:17,278 INFO L82 PathProgramCache]: Analyzing trace with hash -130309370, now seen corresponding path program 700 times [2020-01-16 18:12:17,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:17,278 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407777205] [2020-01-16 18:12:17,278 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:17,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:17,813 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:12:17,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:12:17,819 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407777205] [2020-01-16 18:12:17,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:17,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:17,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204792690] [2020-01-16 18:12:17,819 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:17,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:17,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:17,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:17,820 INFO L87 Difference]: Start difference. First operand 1581 states and 7045 transitions. Second operand 11 states. [2020-01-16 18:12:18,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:18,038 INFO L93 Difference]: Finished difference Result 2986 states and 11788 transitions. [2020-01-16 18:12:18,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:18,038 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:18,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:18,045 INFO L225 Difference]: With dead ends: 2986 [2020-01-16 18:12:18,045 INFO L226 Difference]: Without dead ends: 2967 [2020-01-16 18:12:18,045 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:12:18,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2967 states. [2020-01-16 18:12:18,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2967 to 1576. [2020-01-16 18:12:18,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:12:18,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7032 transitions. [2020-01-16 18:12:18,112 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7032 transitions. Word has length 28 [2020-01-16 18:12:18,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:18,112 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7032 transitions. [2020-01-16 18:12:18,112 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:18,112 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7032 transitions. [2020-01-16 18:12:18,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:18,114 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:18,115 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 18:12:18,115 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 18:12:18,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:18,115 INFO L82 PathProgramCache]: Analyzing trace with hash -753475906, now seen corresponding path program 701 times [2020-01-16 18:12:18,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:18,115 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066607924] [2020-01-16 18:12:18,115 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:18,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:18,672 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-01-16 18:12:18,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:12:18,679 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066607924] [2020-01-16 18:12:18,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:18,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:18,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743463933] [2020-01-16 18:12:18,680 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:18,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:18,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:18,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:18,680 INFO L87 Difference]: Start difference. First operand 1576 states and 7032 transitions. Second operand 11 states. [2020-01-16 18:12:18,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:18,859 INFO L93 Difference]: Finished difference Result 2987 states and 11791 transitions. [2020-01-16 18:12:18,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:18,860 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:18,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:18,867 INFO L225 Difference]: With dead ends: 2987 [2020-01-16 18:12:18,867 INFO L226 Difference]: Without dead ends: 2969 [2020-01-16 18:12:18,867 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 18:12:18,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2969 states. [2020-01-16 18:12:18,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2969 to 1580. [2020-01-16 18:12:18,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:12:18,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7039 transitions. [2020-01-16 18:12:18,936 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7039 transitions. Word has length 28 [2020-01-16 18:12:18,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:18,936 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7039 transitions. [2020-01-16 18:12:18,936 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:18,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7039 transitions. [2020-01-16 18:12:18,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:18,938 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:18,939 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 18:12:18,939 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 18:12:18,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:18,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1480631588, now seen corresponding path program 702 times [2020-01-16 18:12:18,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:18,939 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500015018] [2020-01-16 18:12:18,939 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:18,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:19,456 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 18:12:19,456 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500015018] [2020-01-16 18:12:19,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:19,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:19,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085404155] [2020-01-16 18:12:19,456 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:19,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:19,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:19,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:19,457 INFO L87 Difference]: Start difference. First operand 1580 states and 7039 transitions. Second operand 11 states. [2020-01-16 18:12:19,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:19,636 INFO L93 Difference]: Finished difference Result 2983 states and 11779 transitions. [2020-01-16 18:12:19,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:19,637 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:19,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:19,645 INFO L225 Difference]: With dead ends: 2983 [2020-01-16 18:12:19,645 INFO L226 Difference]: Without dead ends: 2959 [2020-01-16 18:12:19,645 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:12:19,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2959 states. [2020-01-16 18:12:19,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2959 to 1570. [2020-01-16 18:12:19,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:12:19,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7017 transitions. [2020-01-16 18:12:19,712 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7017 transitions. Word has length 28 [2020-01-16 18:12:19,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:19,712 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7017 transitions. [2020-01-16 18:12:19,712 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:19,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7017 transitions. [2020-01-16 18:12:19,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:19,715 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:19,715 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:12:19,715 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 18:12:19,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:19,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1742083944, now seen corresponding path program 703 times [2020-01-16 18:12:19,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:19,715 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035089911] [2020-01-16 18:12:19,715 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:19,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:20,267 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:12:20,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:12:20,274 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035089911] [2020-01-16 18:12:20,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:20,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:20,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359014703] [2020-01-16 18:12:20,274 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:20,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:20,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:20,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:20,275 INFO L87 Difference]: Start difference. First operand 1570 states and 7017 transitions. Second operand 11 states. [2020-01-16 18:12:20,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:20,444 INFO L93 Difference]: Finished difference Result 3014 states and 11862 transitions. [2020-01-16 18:12:20,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:20,444 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:20,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:20,451 INFO L225 Difference]: With dead ends: 3014 [2020-01-16 18:12:20,451 INFO L226 Difference]: Without dead ends: 2994 [2020-01-16 18:12:20,451 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:12:20,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2020-01-16 18:12:20,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 1590. [2020-01-16 18:12:20,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1590 states. [2020-01-16 18:12:20,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 7067 transitions. [2020-01-16 18:12:20,519 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 7067 transitions. Word has length 28 [2020-01-16 18:12:20,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:20,519 INFO L478 AbstractCegarLoop]: Abstraction has 1590 states and 7067 transitions. [2020-01-16 18:12:20,519 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:20,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 7067 transitions. [2020-01-16 18:12:20,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:20,521 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:20,521 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:12:20,522 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 18:12:20,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:20,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1808180854, now seen corresponding path program 704 times [2020-01-16 18:12:20,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:20,522 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827715316] [2020-01-16 18:12:20,522 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:20,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:21,073 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 18:12:21,074 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827715316] [2020-01-16 18:12:21,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:21,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:21,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999408749] [2020-01-16 18:12:21,074 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:21,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:21,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:21,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:21,075 INFO L87 Difference]: Start difference. First operand 1590 states and 7067 transitions. Second operand 11 states. [2020-01-16 18:12:21,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:21,301 INFO L93 Difference]: Finished difference Result 3012 states and 11850 transitions. [2020-01-16 18:12:21,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:21,301 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:21,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:21,308 INFO L225 Difference]: With dead ends: 3012 [2020-01-16 18:12:21,308 INFO L226 Difference]: Without dead ends: 2984 [2020-01-16 18:12:21,308 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 18:12:21,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2984 states. [2020-01-16 18:12:21,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2984 to 1580. [2020-01-16 18:12:21,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:12:21,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7041 transitions. [2020-01-16 18:12:21,375 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7041 transitions. Word has length 28 [2020-01-16 18:12:21,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:21,375 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7041 transitions. [2020-01-16 18:12:21,376 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:21,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7041 transitions. [2020-01-16 18:12:21,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:21,378 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:21,378 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 18:12:21,378 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 18:12:21,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:21,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1206854142, now seen corresponding path program 705 times [2020-01-16 18:12:21,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:21,378 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242974348] [2020-01-16 18:12:21,378 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:21,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:21,936 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:12:21,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:12:21,942 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242974348] [2020-01-16 18:12:21,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:21,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:21,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980217937] [2020-01-16 18:12:21,942 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:21,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:21,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:21,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:21,943 INFO L87 Difference]: Start difference. First operand 1580 states and 7041 transitions. Second operand 11 states. [2020-01-16 18:12:22,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:22,086 INFO L93 Difference]: Finished difference Result 3011 states and 11847 transitions. [2020-01-16 18:12:22,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:22,087 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:22,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:22,094 INFO L225 Difference]: With dead ends: 3011 [2020-01-16 18:12:22,094 INFO L226 Difference]: Without dead ends: 2991 [2020-01-16 18:12:22,094 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 18:12:22,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2991 states. [2020-01-16 18:12:22,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2991 to 1588. [2020-01-16 18:12:22,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1588 states. [2020-01-16 18:12:22,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 7055 transitions. [2020-01-16 18:12:22,161 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 7055 transitions. Word has length 28 [2020-01-16 18:12:22,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:22,161 INFO L478 AbstractCegarLoop]: Abstraction has 1588 states and 7055 transitions. [2020-01-16 18:12:22,161 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:22,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 7055 transitions. [2020-01-16 18:12:22,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:22,163 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:22,163 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 18:12:22,163 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 18:12:22,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:22,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1380101834, now seen corresponding path program 706 times [2020-01-16 18:12:22,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:22,164 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88417296] [2020-01-16 18:12:22,164 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:22,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:22,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:12:22,717 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88417296] [2020-01-16 18:12:22,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:22,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:22,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611130323] [2020-01-16 18:12:22,717 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:22,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:22,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:22,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:22,718 INFO L87 Difference]: Start difference. First operand 1588 states and 7055 transitions. Second operand 11 states. [2020-01-16 18:12:22,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:22,923 INFO L93 Difference]: Finished difference Result 3008 states and 11834 transitions. [2020-01-16 18:12:22,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:22,924 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:22,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:22,931 INFO L225 Difference]: With dead ends: 3008 [2020-01-16 18:12:22,931 INFO L226 Difference]: Without dead ends: 2983 [2020-01-16 18:12:22,932 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 18:12:22,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2983 states. [2020-01-16 18:12:23,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2983 to 1580. [2020-01-16 18:12:23,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:12:23,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7033 transitions. [2020-01-16 18:12:23,006 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7033 transitions. Word has length 28 [2020-01-16 18:12:23,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:23,006 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7033 transitions. [2020-01-16 18:12:23,006 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:23,006 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7033 transitions. [2020-01-16 18:12:23,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:23,008 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:23,009 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:12:23,009 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 18:12:23,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:23,009 INFO L82 PathProgramCache]: Analyzing trace with hash -732469698, now seen corresponding path program 707 times [2020-01-16 18:12:23,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:23,009 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472840903] [2020-01-16 18:12:23,009 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:23,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:23,547 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 18:12:23,548 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472840903] [2020-01-16 18:12:23,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:23,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:23,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203247836] [2020-01-16 18:12:23,548 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:23,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:23,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:23,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:23,549 INFO L87 Difference]: Start difference. First operand 1580 states and 7033 transitions. Second operand 11 states. [2020-01-16 18:12:23,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:23,744 INFO L93 Difference]: Finished difference Result 3006 states and 11831 transitions. [2020-01-16 18:12:23,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:23,744 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:23,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:23,751 INFO L225 Difference]: With dead ends: 3006 [2020-01-16 18:12:23,751 INFO L226 Difference]: Without dead ends: 2988 [2020-01-16 18:12:23,751 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:12:23,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2988 states. [2020-01-16 18:12:23,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2988 to 1587. [2020-01-16 18:12:23,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1587 states. [2020-01-16 18:12:23,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 7046 transitions. [2020-01-16 18:12:23,819 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 7046 transitions. Word has length 28 [2020-01-16 18:12:23,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:23,819 INFO L478 AbstractCegarLoop]: Abstraction has 1587 states and 7046 transitions. [2020-01-16 18:12:23,819 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:23,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 7046 transitions. [2020-01-16 18:12:23,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:23,821 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:23,821 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 18:12:23,821 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 18:12:23,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:23,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1303924504, now seen corresponding path program 708 times [2020-01-16 18:12:23,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:23,822 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786413223] [2020-01-16 18:12:23,822 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:23,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:24,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:12:24,378 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786413223] [2020-01-16 18:12:24,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:24,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:24,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612463846] [2020-01-16 18:12:24,378 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:24,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:24,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:24,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:24,378 INFO L87 Difference]: Start difference. First operand 1587 states and 7046 transitions. Second operand 11 states. [2020-01-16 18:12:24,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:24,568 INFO L93 Difference]: Finished difference Result 3005 states and 11822 transitions. [2020-01-16 18:12:24,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:24,569 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:24,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:24,576 INFO L225 Difference]: With dead ends: 3005 [2020-01-16 18:12:24,576 INFO L226 Difference]: Without dead ends: 2971 [2020-01-16 18:12:24,577 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 18:12:24,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2971 states. [2020-01-16 18:12:24,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2971 to 1570. [2020-01-16 18:12:24,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:12:24,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7010 transitions. [2020-01-16 18:12:24,643 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7010 transitions. Word has length 28 [2020-01-16 18:12:24,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:24,643 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7010 transitions. [2020-01-16 18:12:24,643 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:24,643 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7010 transitions. [2020-01-16 18:12:24,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:24,645 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:24,645 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 18:12:24,645 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 18:12:24,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:24,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1773593256, now seen corresponding path program 709 times [2020-01-16 18:12:24,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:24,646 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574609551] [2020-01-16 18:12:24,646 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:24,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:25,221 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 18:12:25,221 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574609551] [2020-01-16 18:12:25,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:25,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:25,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861042134] [2020-01-16 18:12:25,221 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:25,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:25,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:25,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:25,222 INFO L87 Difference]: Start difference. First operand 1570 states and 7010 transitions. Second operand 11 states. [2020-01-16 18:12:25,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:25,391 INFO L93 Difference]: Finished difference Result 2988 states and 11789 transitions. [2020-01-16 18:12:25,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:25,391 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:25,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:25,399 INFO L225 Difference]: With dead ends: 2988 [2020-01-16 18:12:25,399 INFO L226 Difference]: Without dead ends: 2968 [2020-01-16 18:12:25,399 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:12:25,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2968 states. [2020-01-16 18:12:25,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2968 to 1580. [2020-01-16 18:12:25,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:12:25,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7036 transitions. [2020-01-16 18:12:25,468 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7036 transitions. Word has length 28 [2020-01-16 18:12:25,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:25,468 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7036 transitions. [2020-01-16 18:12:25,468 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:25,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7036 transitions. [2020-01-16 18:12:25,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:25,470 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:25,470 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 18:12:25,470 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 18:12:25,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:25,470 INFO L82 PathProgramCache]: Analyzing trace with hash 457435952, now seen corresponding path program 710 times [2020-01-16 18:12:25,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:25,471 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956173202] [2020-01-16 18:12:25,471 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:25,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:25,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:12:25,991 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956173202] [2020-01-16 18:12:25,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:25,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:25,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464202032] [2020-01-16 18:12:25,991 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:25,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:25,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:25,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:25,991 INFO L87 Difference]: Start difference. First operand 1580 states and 7036 transitions. Second operand 11 states. [2020-01-16 18:12:26,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:26,184 INFO L93 Difference]: Finished difference Result 2982 states and 11773 transitions. [2020-01-16 18:12:26,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:26,185 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:26,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:26,192 INFO L225 Difference]: With dead ends: 2982 [2020-01-16 18:12:26,193 INFO L226 Difference]: Without dead ends: 2963 [2020-01-16 18:12:26,193 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:12:26,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2963 states. [2020-01-16 18:12:26,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2963 to 1575. [2020-01-16 18:12:26,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:12:26,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7023 transitions. [2020-01-16 18:12:26,260 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7023 transitions. Word has length 28 [2020-01-16 18:12:26,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:26,260 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7023 transitions. [2020-01-16 18:12:26,260 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:26,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7023 transitions. [2020-01-16 18:12:26,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:26,263 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:26,263 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 18:12:26,263 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 18:12:26,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:26,263 INFO L82 PathProgramCache]: Analyzing trace with hash 700507876, now seen corresponding path program 711 times [2020-01-16 18:12:26,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:26,263 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113729263] [2020-01-16 18:12:26,263 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:26,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:26,805 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 18:12:26,805 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113729263] [2020-01-16 18:12:26,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:26,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:26,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453724445] [2020-01-16 18:12:26,806 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:26,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:26,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:26,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:26,806 INFO L87 Difference]: Start difference. First operand 1575 states and 7023 transitions. Second operand 11 states. [2020-01-16 18:12:26,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:26,950 INFO L93 Difference]: Finished difference Result 2994 states and 11799 transitions. [2020-01-16 18:12:26,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:26,950 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:26,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:26,957 INFO L225 Difference]: With dead ends: 2994 [2020-01-16 18:12:26,957 INFO L226 Difference]: Without dead ends: 2974 [2020-01-16 18:12:26,957 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:12:27,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2974 states. [2020-01-16 18:12:27,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2974 to 1583. [2020-01-16 18:12:27,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:12:27,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7037 transitions. [2020-01-16 18:12:27,038 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7037 transitions. Word has length 28 [2020-01-16 18:12:27,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:27,038 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7037 transitions. [2020-01-16 18:12:27,038 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:27,038 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7037 transitions. [2020-01-16 18:12:27,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:27,042 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:27,042 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 18:12:27,042 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 18:12:27,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:27,043 INFO L82 PathProgramCache]: Analyzing trace with hash 873755568, now seen corresponding path program 712 times [2020-01-16 18:12:27,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:27,043 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571826132] [2020-01-16 18:12:27,043 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:27,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:27,571 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 18:12:27,572 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571826132] [2020-01-16 18:12:27,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:27,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:27,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861243826] [2020-01-16 18:12:27,572 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:27,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:27,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:27,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:27,573 INFO L87 Difference]: Start difference. First operand 1583 states and 7037 transitions. Second operand 11 states. [2020-01-16 18:12:27,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:27,804 INFO L93 Difference]: Finished difference Result 2991 states and 11786 transitions. [2020-01-16 18:12:27,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:27,804 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:27,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:27,812 INFO L225 Difference]: With dead ends: 2991 [2020-01-16 18:12:27,812 INFO L226 Difference]: Without dead ends: 2966 [2020-01-16 18:12:27,812 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:12:27,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2966 states. [2020-01-16 18:12:27,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2966 to 1575. [2020-01-16 18:12:27,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:12:27,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7018 transitions. [2020-01-16 18:12:27,880 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7018 transitions. Word has length 28 [2020-01-16 18:12:27,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:27,880 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7018 transitions. [2020-01-16 18:12:27,880 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:27,880 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7018 transitions. [2020-01-16 18:12:27,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:27,883 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:27,883 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:12:27,883 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 18:12:27,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:27,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1533147108, now seen corresponding path program 713 times [2020-01-16 18:12:27,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:27,883 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812116016] [2020-01-16 18:12:27,883 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:27,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:28,417 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:12:28,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:12:28,424 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812116016] [2020-01-16 18:12:28,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:28,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:28,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440345757] [2020-01-16 18:12:28,424 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:28,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:28,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:28,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:28,424 INFO L87 Difference]: Start difference. First operand 1575 states and 7018 transitions. Second operand 11 states. [2020-01-16 18:12:28,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:28,651 INFO L93 Difference]: Finished difference Result 2978 states and 11761 transitions. [2020-01-16 18:12:28,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:28,651 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:28,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:28,658 INFO L225 Difference]: With dead ends: 2978 [2020-01-16 18:12:28,658 INFO L226 Difference]: Without dead ends: 2964 [2020-01-16 18:12:28,658 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:12:28,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2964 states. [2020-01-16 18:12:28,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2964 to 1579. [2020-01-16 18:12:28,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:12:28,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7025 transitions. [2020-01-16 18:12:28,726 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7025 transitions. Word has length 28 [2020-01-16 18:12:28,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:28,726 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7025 transitions. [2020-01-16 18:12:28,726 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:28,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7025 transitions. [2020-01-16 18:12:28,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:28,729 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:28,729 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:12:28,729 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 18:12:28,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:28,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1272415192, now seen corresponding path program 714 times [2020-01-16 18:12:28,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:28,729 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066461563] [2020-01-16 18:12:28,729 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:28,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:29,260 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 18:12:29,260 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066461563] [2020-01-16 18:12:29,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:29,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:29,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238887014] [2020-01-16 18:12:29,261 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:29,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:29,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:29,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:29,261 INFO L87 Difference]: Start difference. First operand 1579 states and 7025 transitions. Second operand 11 states. [2020-01-16 18:12:29,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:29,471 INFO L93 Difference]: Finished difference Result 2981 states and 11763 transitions. [2020-01-16 18:12:29,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:29,471 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:29,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:29,478 INFO L225 Difference]: With dead ends: 2981 [2020-01-16 18:12:29,478 INFO L226 Difference]: Without dead ends: 2955 [2020-01-16 18:12:29,478 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 18:12:29,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2955 states. [2020-01-16 18:12:29,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2955 to 1570. [2020-01-16 18:12:29,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:12:29,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7005 transitions. [2020-01-16 18:12:29,546 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7005 transitions. Word has length 28 [2020-01-16 18:12:29,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:29,546 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7005 transitions. [2020-01-16 18:12:29,546 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:29,546 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7005 transitions. [2020-01-16 18:12:29,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:29,548 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:29,548 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:12:29,548 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 18:12:29,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:29,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1766168438, now seen corresponding path program 715 times [2020-01-16 18:12:29,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:29,549 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213519499] [2020-01-16 18:12:29,549 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:29,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:30,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:12:30,076 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213519499] [2020-01-16 18:12:30,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:30,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:30,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279827204] [2020-01-16 18:12:30,077 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:30,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:30,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:30,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:30,077 INFO L87 Difference]: Start difference. First operand 1570 states and 7005 transitions. Second operand 11 states. [2020-01-16 18:12:30,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:30,255 INFO L93 Difference]: Finished difference Result 2978 states and 11766 transitions. [2020-01-16 18:12:30,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:30,255 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:30,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:30,262 INFO L225 Difference]: With dead ends: 2978 [2020-01-16 18:12:30,263 INFO L226 Difference]: Without dead ends: 2960 [2020-01-16 18:12:30,263 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 18:12:30,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2960 states. [2020-01-16 18:12:30,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2960 to 1578. [2020-01-16 18:12:30,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:12:30,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7027 transitions. [2020-01-16 18:12:30,330 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7027 transitions. Word has length 28 [2020-01-16 18:12:30,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:30,330 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7027 transitions. [2020-01-16 18:12:30,330 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:30,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7027 transitions. [2020-01-16 18:12:30,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:30,333 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:30,333 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 18:12:30,333 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 18:12:30,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:30,333 INFO L82 PathProgramCache]: Analyzing trace with hash 467939056, now seen corresponding path program 716 times [2020-01-16 18:12:30,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:30,333 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737130365] [2020-01-16 18:12:30,333 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:30,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:30,868 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 18:12:30,868 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737130365] [2020-01-16 18:12:30,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:30,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:30,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389236703] [2020-01-16 18:12:30,869 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:30,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:30,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:30,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:30,869 INFO L87 Difference]: Start difference. First operand 1578 states and 7027 transitions. Second operand 11 states. [2020-01-16 18:12:31,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:31,087 INFO L93 Difference]: Finished difference Result 2974 states and 11754 transitions. [2020-01-16 18:12:31,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:31,087 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:31,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:31,095 INFO L225 Difference]: With dead ends: 2974 [2020-01-16 18:12:31,095 INFO L226 Difference]: Without dead ends: 2956 [2020-01-16 18:12:31,095 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:12:31,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2020-01-16 18:12:31,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 1574. [2020-01-16 18:12:31,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:12:31,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7016 transitions. [2020-01-16 18:12:31,163 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7016 transitions. Word has length 28 [2020-01-16 18:12:31,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:31,163 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7016 transitions. [2020-01-16 18:12:31,163 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:31,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7016 transitions. [2020-01-16 18:12:31,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:31,165 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:31,165 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 18:12:31,165 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 18:12:31,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:31,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1455713478, now seen corresponding path program 717 times [2020-01-16 18:12:31,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:31,166 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593038998] [2020-01-16 18:12:31,166 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:31,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:31,615 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-01-16 18:12:31,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:12:31,733 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593038998] [2020-01-16 18:12:31,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:31,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:31,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488761324] [2020-01-16 18:12:31,733 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:31,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:31,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:31,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:31,733 INFO L87 Difference]: Start difference. First operand 1574 states and 7016 transitions. Second operand 11 states. [2020-01-16 18:12:31,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:31,943 INFO L93 Difference]: Finished difference Result 2984 states and 11777 transitions. [2020-01-16 18:12:31,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:31,944 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:31,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:31,951 INFO L225 Difference]: With dead ends: 2984 [2020-01-16 18:12:31,951 INFO L226 Difference]: Without dead ends: 2966 [2020-01-16 18:12:31,951 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 18:12:31,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2966 states. [2020-01-16 18:12:32,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2966 to 1581. [2020-01-16 18:12:32,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:12:32,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7029 transitions. [2020-01-16 18:12:32,020 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7029 transitions. Word has length 28 [2020-01-16 18:12:32,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:32,020 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7029 transitions. [2020-01-16 18:12:32,020 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:32,020 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7029 transitions. [2020-01-16 18:12:32,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:32,022 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:32,022 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 18:12:32,022 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 18:12:32,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:32,022 INFO L82 PathProgramCache]: Analyzing trace with hash 884258672, now seen corresponding path program 718 times [2020-01-16 18:12:32,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:32,023 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975681102] [2020-01-16 18:12:32,023 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:32,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:32,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:12:32,589 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975681102] [2020-01-16 18:12:32,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:32,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:32,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597915357] [2020-01-16 18:12:32,590 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:32,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:32,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:32,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:32,590 INFO L87 Difference]: Start difference. First operand 1581 states and 7029 transitions. Second operand 11 states. [2020-01-16 18:12:32,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:32,826 INFO L93 Difference]: Finished difference Result 2983 states and 11768 transitions. [2020-01-16 18:12:32,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:32,827 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:32,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:32,834 INFO L225 Difference]: With dead ends: 2983 [2020-01-16 18:12:32,834 INFO L226 Difference]: Without dead ends: 2959 [2020-01-16 18:12:32,835 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 18:12:32,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2959 states. [2020-01-16 18:12:32,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2959 to 1574. [2020-01-16 18:12:32,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:12:32,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7012 transitions. [2020-01-16 18:12:32,902 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7012 transitions. Word has length 28 [2020-01-16 18:12:32,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:32,902 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7012 transitions. [2020-01-16 18:12:32,902 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:32,902 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7012 transitions. [2020-01-16 18:12:32,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:32,904 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:32,904 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 18:12:32,904 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 18:12:32,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:32,905 INFO L82 PathProgramCache]: Analyzing trace with hash -67290746, now seen corresponding path program 719 times [2020-01-16 18:12:32,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:32,905 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168004380] [2020-01-16 18:12:32,905 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:32,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:33,436 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 18:12:33,436 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168004380] [2020-01-16 18:12:33,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:33,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:33,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212102042] [2020-01-16 18:12:33,437 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:33,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:33,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:33,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:33,437 INFO L87 Difference]: Start difference. First operand 1574 states and 7012 transitions. Second operand 11 states. [2020-01-16 18:12:33,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:33,670 INFO L93 Difference]: Finished difference Result 2973 states and 11748 transitions. [2020-01-16 18:12:33,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:33,670 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:33,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:33,678 INFO L225 Difference]: With dead ends: 2973 [2020-01-16 18:12:33,678 INFO L226 Difference]: Without dead ends: 2959 [2020-01-16 18:12:33,679 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:12:33,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2959 states. [2020-01-16 18:12:33,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2959 to 1578. [2020-01-16 18:12:33,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:12:33,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7019 transitions. [2020-01-16 18:12:33,748 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7019 transitions. Word has length 28 [2020-01-16 18:12:33,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:33,749 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7019 transitions. [2020-01-16 18:12:33,749 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:33,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7019 transitions. [2020-01-16 18:12:33,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:33,751 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:33,751 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:12:33,751 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 18:12:33,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:33,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1422114250, now seen corresponding path program 720 times [2020-01-16 18:12:33,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:33,752 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785594801] [2020-01-16 18:12:33,752 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:33,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:34,286 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:12:34,292 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 18:12:34,292 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785594801] [2020-01-16 18:12:34,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:34,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:34,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276810831] [2020-01-16 18:12:34,293 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:34,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:34,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:34,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:34,293 INFO L87 Difference]: Start difference. First operand 1578 states and 7019 transitions. Second operand 11 states. [2020-01-16 18:12:34,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:34,534 INFO L93 Difference]: Finished difference Result 2976 states and 11750 transitions. [2020-01-16 18:12:34,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:34,534 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:34,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:34,542 INFO L225 Difference]: With dead ends: 2976 [2020-01-16 18:12:34,542 INFO L226 Difference]: Without dead ends: 2926 [2020-01-16 18:12:34,542 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:12:34,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2020-01-16 18:12:34,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 1545. [2020-01-16 18:12:34,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1545 states. [2020-01-16 18:12:34,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1545 states to 1545 states and 6955 transitions. [2020-01-16 18:12:34,609 INFO L78 Accepts]: Start accepts. Automaton has 1545 states and 6955 transitions. Word has length 28 [2020-01-16 18:12:34,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:34,609 INFO L478 AbstractCegarLoop]: Abstraction has 1545 states and 6955 transitions. [2020-01-16 18:12:34,609 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:34,609 INFO L276 IsEmpty]: Start isEmpty. Operand 1545 states and 6955 transitions. [2020-01-16 18:12:34,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:34,612 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:34,612 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:12:34,612 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 18:12:34,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:34,612 INFO L82 PathProgramCache]: Analyzing trace with hash -645301276, now seen corresponding path program 721 times [2020-01-16 18:12:34,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:34,612 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428914652] [2020-01-16 18:12:34,612 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:34,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:35,150 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 18:12:35,151 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428914652] [2020-01-16 18:12:35,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:35,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:35,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508595899] [2020-01-16 18:12:35,151 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:35,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:35,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:35,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:35,152 INFO L87 Difference]: Start difference. First operand 1545 states and 6955 transitions. Second operand 11 states. [2020-01-16 18:12:35,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:35,416 INFO L93 Difference]: Finished difference Result 2968 states and 11774 transitions. [2020-01-16 18:12:35,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:35,416 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:35,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:35,423 INFO L225 Difference]: With dead ends: 2968 [2020-01-16 18:12:35,424 INFO L226 Difference]: Without dead ends: 2953 [2020-01-16 18:12:35,424 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 18:12:35,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2953 states. [2020-01-16 18:12:35,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2953 to 1581. [2020-01-16 18:12:35,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:12:35,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7101 transitions. [2020-01-16 18:12:35,491 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7101 transitions. Word has length 28 [2020-01-16 18:12:35,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:35,491 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7101 transitions. [2020-01-16 18:12:35,491 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:35,491 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7101 transitions. [2020-01-16 18:12:35,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:35,493 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:35,493 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 18:12:35,493 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 18:12:35,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:35,494 INFO L82 PathProgramCache]: Analyzing trace with hash 99401222, now seen corresponding path program 722 times [2020-01-16 18:12:35,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:35,494 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228087605] [2020-01-16 18:12:35,494 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:35,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:36,025 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:12:36,032 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 18:12:36,033 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228087605] [2020-01-16 18:12:36,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:36,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:36,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846966234] [2020-01-16 18:12:36,033 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:36,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:36,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:36,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:36,034 INFO L87 Difference]: Start difference. First operand 1581 states and 7101 transitions. Second operand 11 states. [2020-01-16 18:12:36,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:36,317 INFO L93 Difference]: Finished difference Result 2969 states and 11771 transitions. [2020-01-16 18:12:36,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:36,317 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:36,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:36,324 INFO L225 Difference]: With dead ends: 2969 [2020-01-16 18:12:36,324 INFO L226 Difference]: Without dead ends: 2948 [2020-01-16 18:12:36,324 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 18:12:36,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2948 states. [2020-01-16 18:12:36,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2948 to 1576. [2020-01-16 18:12:36,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:12:36,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7087 transitions. [2020-01-16 18:12:36,391 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7087 transitions. Word has length 28 [2020-01-16 18:12:36,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:36,391 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7087 transitions. [2020-01-16 18:12:36,391 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:36,391 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7087 transitions. [2020-01-16 18:12:36,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:36,393 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:36,393 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 18:12:36,394 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 18:12:36,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:36,394 INFO L82 PathProgramCache]: Analyzing trace with hash 965639682, now seen corresponding path program 723 times [2020-01-16 18:12:36,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:36,394 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846746396] [2020-01-16 18:12:36,394 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:36,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:36,920 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 18:12:36,921 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846746396] [2020-01-16 18:12:36,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:36,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:36,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366166950] [2020-01-16 18:12:36,921 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:36,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:36,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:36,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:36,921 INFO L87 Difference]: Start difference. First operand 1576 states and 7087 transitions. Second operand 11 states. [2020-01-16 18:12:37,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:37,185 INFO L93 Difference]: Finished difference Result 2973 states and 11778 transitions. [2020-01-16 18:12:37,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:37,186 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:37,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:37,193 INFO L225 Difference]: With dead ends: 2973 [2020-01-16 18:12:37,194 INFO L226 Difference]: Without dead ends: 2958 [2020-01-16 18:12:37,194 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 18:12:37,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2958 states. [2020-01-16 18:12:37,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2958 to 1582. [2020-01-16 18:12:37,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 18:12:37,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7098 transitions. [2020-01-16 18:12:37,261 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7098 transitions. Word has length 28 [2020-01-16 18:12:37,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:37,261 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7098 transitions. [2020-01-16 18:12:37,261 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:37,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7098 transitions. [2020-01-16 18:12:37,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:37,263 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:37,263 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 18:12:37,264 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 18:12:37,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:37,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1839922618, now seen corresponding path program 724 times [2020-01-16 18:12:37,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:37,264 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190631403] [2020-01-16 18:12:37,264 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:37,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:37,813 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 18:12:37,813 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190631403] [2020-01-16 18:12:37,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:37,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:37,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463754750] [2020-01-16 18:12:37,814 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:37,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:37,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:37,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:37,814 INFO L87 Difference]: Start difference. First operand 1582 states and 7098 transitions. Second operand 11 states. [2020-01-16 18:12:37,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:37,979 INFO L93 Difference]: Finished difference Result 2978 states and 11782 transitions. [2020-01-16 18:12:37,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:37,980 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:37,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:37,987 INFO L225 Difference]: With dead ends: 2978 [2020-01-16 18:12:37,987 INFO L226 Difference]: Without dead ends: 2952 [2020-01-16 18:12:37,987 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 18:12:38,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2020-01-16 18:12:38,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 1576. [2020-01-16 18:12:38,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:12:38,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7081 transitions. [2020-01-16 18:12:38,054 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7081 transitions. Word has length 28 [2020-01-16 18:12:38,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:38,054 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7081 transitions. [2020-01-16 18:12:38,054 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:38,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7081 transitions. [2020-01-16 18:12:38,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:38,057 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:38,057 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:12:38,057 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 18:12:38,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:38,057 INFO L82 PathProgramCache]: Analyzing trace with hash -973684158, now seen corresponding path program 725 times [2020-01-16 18:12:38,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:38,057 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796201720] [2020-01-16 18:12:38,057 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:38,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:38,618 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 18:12:38,619 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796201720] [2020-01-16 18:12:38,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:38,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:38,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644659602] [2020-01-16 18:12:38,619 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:38,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:38,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:38,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:38,620 INFO L87 Difference]: Start difference. First operand 1576 states and 7081 transitions. Second operand 11 states. [2020-01-16 18:12:38,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:38,812 INFO L93 Difference]: Finished difference Result 2976 states and 11779 transitions. [2020-01-16 18:12:38,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:38,812 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:38,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:38,820 INFO L225 Difference]: With dead ends: 2976 [2020-01-16 18:12:38,820 INFO L226 Difference]: Without dead ends: 2960 [2020-01-16 18:12:38,821 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 18:12:38,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2960 states. [2020-01-16 18:12:38,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2960 to 1583. [2020-01-16 18:12:38,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:12:38,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7094 transitions. [2020-01-16 18:12:38,888 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7094 transitions. Word has length 28 [2020-01-16 18:12:38,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:38,888 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7094 transitions. [2020-01-16 18:12:38,888 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:38,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7094 transitions. [2020-01-16 18:12:38,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:38,890 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:38,891 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:12:38,891 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 18:12:38,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:38,891 INFO L82 PathProgramCache]: Analyzing trace with hash -228981660, now seen corresponding path program 726 times [2020-01-16 18:12:38,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:38,891 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503609380] [2020-01-16 18:12:38,891 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:38,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:39,436 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 18:12:39,436 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503609380] [2020-01-16 18:12:39,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:39,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:39,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940233535] [2020-01-16 18:12:39,436 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:39,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:39,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:39,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:39,437 INFO L87 Difference]: Start difference. First operand 1583 states and 7094 transitions. Second operand 11 states. [2020-01-16 18:12:39,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:39,668 INFO L93 Difference]: Finished difference Result 2980 states and 11780 transitions. [2020-01-16 18:12:39,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:39,669 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:39,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:39,676 INFO L225 Difference]: With dead ends: 2980 [2020-01-16 18:12:39,676 INFO L226 Difference]: Without dead ends: 2947 [2020-01-16 18:12:39,676 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 18:12:39,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2947 states. [2020-01-16 18:12:39,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2947 to 1570. [2020-01-16 18:12:39,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:12:39,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7064 transitions. [2020-01-16 18:12:39,744 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7064 transitions. Word has length 28 [2020-01-16 18:12:39,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:39,745 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7064 transitions. [2020-01-16 18:12:39,745 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:39,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7064 transitions. [2020-01-16 18:12:39,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:39,747 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:39,747 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:12:39,747 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 18:12:39,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:39,747 INFO L82 PathProgramCache]: Analyzing trace with hash 74711198, now seen corresponding path program 727 times [2020-01-16 18:12:39,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:39,748 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237296158] [2020-01-16 18:12:39,748 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:39,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:40,284 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 18:12:40,285 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237296158] [2020-01-16 18:12:40,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:40,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:40,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647108787] [2020-01-16 18:12:40,285 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:40,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:40,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:40,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:40,285 INFO L87 Difference]: Start difference. First operand 1570 states and 7064 transitions. Second operand 11 states. [2020-01-16 18:12:40,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:40,481 INFO L93 Difference]: Finished difference Result 2963 states and 11758 transitions. [2020-01-16 18:12:40,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:40,482 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:40,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:40,489 INFO L225 Difference]: With dead ends: 2963 [2020-01-16 18:12:40,490 INFO L226 Difference]: Without dead ends: 2948 [2020-01-16 18:12:40,490 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 18:12:40,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2948 states. [2020-01-16 18:12:40,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2948 to 1580. [2020-01-16 18:12:40,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:12:40,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7092 transitions. [2020-01-16 18:12:40,558 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7092 transitions. Word has length 28 [2020-01-16 18:12:40,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:40,559 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7092 transitions. [2020-01-16 18:12:40,559 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:40,559 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7092 transitions. [2020-01-16 18:12:40,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:40,561 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:40,561 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:12:40,561 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 18:12:40,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:40,561 INFO L82 PathProgramCache]: Analyzing trace with hash 819413696, now seen corresponding path program 728 times [2020-01-16 18:12:40,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:40,562 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479022955] [2020-01-16 18:12:40,562 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:40,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:41,089 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 18:12:41,089 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479022955] [2020-01-16 18:12:41,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:41,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:41,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727976844] [2020-01-16 18:12:41,090 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:41,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:41,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:41,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:41,090 INFO L87 Difference]: Start difference. First operand 1580 states and 7092 transitions. Second operand 11 states. [2020-01-16 18:12:41,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:41,358 INFO L93 Difference]: Finished difference Result 2964 states and 11755 transitions. [2020-01-16 18:12:41,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:41,358 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:41,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:41,366 INFO L225 Difference]: With dead ends: 2964 [2020-01-16 18:12:41,366 INFO L226 Difference]: Without dead ends: 2943 [2020-01-16 18:12:41,366 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 18:12:41,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2943 states. [2020-01-16 18:12:41,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2943 to 1575. [2020-01-16 18:12:41,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:12:41,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7078 transitions. [2020-01-16 18:12:41,435 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7078 transitions. Word has length 28 [2020-01-16 18:12:41,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:41,435 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7078 transitions. [2020-01-16 18:12:41,435 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:41,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7078 transitions. [2020-01-16 18:12:41,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:41,437 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:41,437 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 18:12:41,438 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 18:12:41,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:41,438 INFO L82 PathProgramCache]: Analyzing trace with hash -998374182, now seen corresponding path program 729 times [2020-01-16 18:12:41,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:41,438 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537429921] [2020-01-16 18:12:41,438 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:41,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:41,969 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 18:12:41,970 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537429921] [2020-01-16 18:12:41,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:41,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:41,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68602813] [2020-01-16 18:12:41,970 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:41,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:41,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:41,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:41,971 INFO L87 Difference]: Start difference. First operand 1575 states and 7078 transitions. Second operand 11 states. [2020-01-16 18:12:42,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:42,231 INFO L93 Difference]: Finished difference Result 2965 states and 11757 transitions. [2020-01-16 18:12:42,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:42,232 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:42,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:42,239 INFO L225 Difference]: With dead ends: 2965 [2020-01-16 18:12:42,239 INFO L226 Difference]: Without dead ends: 2950 [2020-01-16 18:12:42,239 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 18:12:42,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2020-01-16 18:12:42,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 1580. [2020-01-16 18:12:42,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:12:42,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7087 transitions. [2020-01-16 18:12:42,306 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7087 transitions. Word has length 28 [2020-01-16 18:12:42,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:42,306 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7087 transitions. [2020-01-16 18:12:42,306 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:42,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7087 transitions. [2020-01-16 18:12:42,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:42,309 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:42,309 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 18:12:42,309 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 18:12:42,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:42,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1235733312, now seen corresponding path program 730 times [2020-01-16 18:12:42,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:42,309 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121309541] [2020-01-16 18:12:42,309 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:42,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:42,829 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 18:12:42,829 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121309541] [2020-01-16 18:12:42,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:42,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:42,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930802560] [2020-01-16 18:12:42,830 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:42,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:42,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:42,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:42,830 INFO L87 Difference]: Start difference. First operand 1580 states and 7087 transitions. Second operand 11 states. [2020-01-16 18:12:43,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:43,036 INFO L93 Difference]: Finished difference Result 2968 states and 11758 transitions. [2020-01-16 18:12:43,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:43,037 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:43,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:43,044 INFO L225 Difference]: With dead ends: 2968 [2020-01-16 18:12:43,044 INFO L226 Difference]: Without dead ends: 2945 [2020-01-16 18:12:43,044 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:12:43,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2945 states. [2020-01-16 18:12:43,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2945 to 1575. [2020-01-16 18:12:43,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:12:43,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7073 transitions. [2020-01-16 18:12:43,111 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7073 transitions. Word has length 28 [2020-01-16 18:12:43,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:43,111 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7073 transitions. [2020-01-16 18:12:43,111 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:43,111 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7073 transitions. [2020-01-16 18:12:43,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:43,113 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:43,113 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:12:43,113 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 18:12:43,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:43,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1357269274, now seen corresponding path program 731 times [2020-01-16 18:12:43,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:43,114 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867967842] [2020-01-16 18:12:43,114 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:43,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:43,630 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:12:43,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:12:43,637 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867967842] [2020-01-16 18:12:43,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:43,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:43,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179415044] [2020-01-16 18:12:43,638 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:43,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:43,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:43,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:43,638 INFO L87 Difference]: Start difference. First operand 1575 states and 7073 transitions. Second operand 11 states. [2020-01-16 18:12:43,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:43,901 INFO L93 Difference]: Finished difference Result 2968 states and 11759 transitions. [2020-01-16 18:12:43,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:43,901 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:43,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:43,908 INFO L225 Difference]: With dead ends: 2968 [2020-01-16 18:12:43,908 INFO L226 Difference]: Without dead ends: 2952 [2020-01-16 18:12:43,908 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 18:12:43,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2020-01-16 18:12:43,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 1581. [2020-01-16 18:12:43,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:12:43,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7084 transitions. [2020-01-16 18:12:43,976 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7084 transitions. Word has length 28 [2020-01-16 18:12:43,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:43,976 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7084 transitions. [2020-01-16 18:12:43,976 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:43,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7084 transitions. [2020-01-16 18:12:43,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:43,978 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:43,978 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 18:12:43,978 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 18:12:43,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:43,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1448293026, now seen corresponding path program 732 times [2020-01-16 18:12:43,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:43,979 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806320431] [2020-01-16 18:12:43,979 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:43,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:44,499 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:12:44,506 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 18:12:44,507 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806320431] [2020-01-16 18:12:44,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:44,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:44,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436560442] [2020-01-16 18:12:44,507 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:44,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:44,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:44,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:44,508 INFO L87 Difference]: Start difference. First operand 1581 states and 7084 transitions. Second operand 11 states. [2020-01-16 18:12:44,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:44,692 INFO L93 Difference]: Finished difference Result 2970 states and 11757 transitions. [2020-01-16 18:12:44,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:44,693 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:44,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:44,700 INFO L225 Difference]: With dead ends: 2970 [2020-01-16 18:12:44,700 INFO L226 Difference]: Without dead ends: 2941 [2020-01-16 18:12:44,700 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 18:12:44,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2941 states. [2020-01-16 18:12:44,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2941 to 1570. [2020-01-16 18:12:44,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:12:44,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7059 transitions. [2020-01-16 18:12:44,767 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7059 transitions. Word has length 28 [2020-01-16 18:12:44,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:44,767 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7059 transitions. [2020-01-16 18:12:44,767 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:44,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7059 transitions. [2020-01-16 18:12:44,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:44,770 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:44,770 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 18:12:44,770 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 18:12:44,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:44,770 INFO L82 PathProgramCache]: Analyzing trace with hash 85214302, now seen corresponding path program 733 times [2020-01-16 18:12:44,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:44,770 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056023622] [2020-01-16 18:12:44,770 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:44,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:45,292 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 18:12:45,292 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056023622] [2020-01-16 18:12:45,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:45,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:45,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444625845] [2020-01-16 18:12:45,293 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:45,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:45,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:45,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:45,293 INFO L87 Difference]: Start difference. First operand 1570 states and 7059 transitions. Second operand 11 states. [2020-01-16 18:12:45,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:45,489 INFO L93 Difference]: Finished difference Result 2979 states and 11785 transitions. [2020-01-16 18:12:45,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:45,490 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:45,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:45,497 INFO L225 Difference]: With dead ends: 2979 [2020-01-16 18:12:45,497 INFO L226 Difference]: Without dead ends: 2964 [2020-01-16 18:12:45,498 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:12:45,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2964 states. [2020-01-16 18:12:45,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2964 to 1583. [2020-01-16 18:12:45,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:12:45,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7094 transitions. [2020-01-16 18:12:45,566 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7094 transitions. Word has length 28 [2020-01-16 18:12:45,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:45,566 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7094 transitions. [2020-01-16 18:12:45,566 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:45,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7094 transitions. [2020-01-16 18:12:45,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:45,568 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:45,568 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 18:12:45,568 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 18:12:45,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:45,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1574619298, now seen corresponding path program 734 times [2020-01-16 18:12:45,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:45,569 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066197487] [2020-01-16 18:12:45,569 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:45,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:46,094 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 18:12:46,095 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066197487] [2020-01-16 18:12:46,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:46,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:46,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109681441] [2020-01-16 18:12:46,095 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:46,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:46,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:46,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:46,095 INFO L87 Difference]: Start difference. First operand 1583 states and 7094 transitions. Second operand 11 states. [2020-01-16 18:12:46,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:46,230 INFO L93 Difference]: Finished difference Result 2984 states and 11789 transitions. [2020-01-16 18:12:46,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:46,230 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:46,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:46,238 INFO L225 Difference]: With dead ends: 2984 [2020-01-16 18:12:46,238 INFO L226 Difference]: Without dead ends: 2958 [2020-01-16 18:12:46,238 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:12:46,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2958 states. [2020-01-16 18:12:46,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2958 to 1577. [2020-01-16 18:12:46,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:12:46,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7077 transitions. [2020-01-16 18:12:46,305 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7077 transitions. Word has length 28 [2020-01-16 18:12:46,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:46,305 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7077 transitions. [2020-01-16 18:12:46,305 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:46,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7077 transitions. [2020-01-16 18:12:46,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:46,307 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:46,307 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 18:12:46,307 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 18:12:46,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:46,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1696155260, now seen corresponding path program 735 times [2020-01-16 18:12:46,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:46,308 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186588006] [2020-01-16 18:12:46,308 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:46,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:46,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:12:46,837 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186588006] [2020-01-16 18:12:46,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:46,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:46,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987303791] [2020-01-16 18:12:46,838 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:46,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:46,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:46,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:46,838 INFO L87 Difference]: Start difference. First operand 1577 states and 7077 transitions. Second operand 11 states. [2020-01-16 18:12:47,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:47,015 INFO L93 Difference]: Finished difference Result 2976 states and 11774 transitions. [2020-01-16 18:12:47,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:47,015 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:47,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:47,023 INFO L225 Difference]: With dead ends: 2976 [2020-01-16 18:12:47,023 INFO L226 Difference]: Without dead ends: 2961 [2020-01-16 18:12:47,023 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 18:12:47,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2020-01-16 18:12:47,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 1582. [2020-01-16 18:12:47,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 18:12:47,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7086 transitions. [2020-01-16 18:12:47,091 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7086 transitions. Word has length 28 [2020-01-16 18:12:47,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:47,091 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7086 transitions. [2020-01-16 18:12:47,091 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:47,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7086 transitions. [2020-01-16 18:12:47,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:47,093 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:47,093 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 18:12:47,093 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 18:12:47,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:47,093 INFO L82 PathProgramCache]: Analyzing trace with hash -364704542, now seen corresponding path program 736 times [2020-01-16 18:12:47,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:47,094 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297831384] [2020-01-16 18:12:47,094 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:47,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:47,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:12:47,616 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297831384] [2020-01-16 18:12:47,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:47,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:47,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159209418] [2020-01-16 18:12:47,616 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:47,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:47,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:47,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:47,617 INFO L87 Difference]: Start difference. First operand 1582 states and 7086 transitions. Second operand 11 states. [2020-01-16 18:12:47,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:47,786 INFO L93 Difference]: Finished difference Result 2979 states and 11775 transitions. [2020-01-16 18:12:47,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:47,786 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:47,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:47,793 INFO L225 Difference]: With dead ends: 2979 [2020-01-16 18:12:47,793 INFO L226 Difference]: Without dead ends: 2956 [2020-01-16 18:12:47,793 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 18:12:47,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2020-01-16 18:12:47,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 1577. [2020-01-16 18:12:47,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:12:47,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7072 transitions. [2020-01-16 18:12:47,860 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7072 transitions. Word has length 28 [2020-01-16 18:12:47,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:47,861 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7072 transitions. [2020-01-16 18:12:47,861 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:47,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7072 transitions. [2020-01-16 18:12:47,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:47,863 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:47,863 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 18:12:47,863 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 18:12:47,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:47,863 INFO L82 PathProgramCache]: Analyzing trace with hash 2112474876, now seen corresponding path program 737 times [2020-01-16 18:12:47,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:47,863 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520461778] [2020-01-16 18:12:47,864 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:47,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:48,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:12:48,401 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520461778] [2020-01-16 18:12:48,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:48,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:48,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686459921] [2020-01-16 18:12:48,401 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:48,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:48,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:48,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:48,402 INFO L87 Difference]: Start difference. First operand 1577 states and 7072 transitions. Second operand 11 states. [2020-01-16 18:12:48,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:48,560 INFO L93 Difference]: Finished difference Result 2991 states and 11799 transitions. [2020-01-16 18:12:48,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:48,561 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:48,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:48,568 INFO L225 Difference]: With dead ends: 2991 [2020-01-16 18:12:48,569 INFO L226 Difference]: Without dead ends: 2971 [2020-01-16 18:12:48,569 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 18:12:48,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2971 states. [2020-01-16 18:12:48,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2971 to 1587. [2020-01-16 18:12:48,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1587 states. [2020-01-16 18:12:48,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 7089 transitions. [2020-01-16 18:12:48,639 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 7089 transitions. Word has length 28 [2020-01-16 18:12:48,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:48,639 INFO L478 AbstractCegarLoop]: Abstraction has 1587 states and 7089 transitions. [2020-01-16 18:12:48,639 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:48,639 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 7089 transitions. [2020-01-16 18:12:48,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:48,641 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:48,641 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 18:12:48,641 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 18:12:48,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:48,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1437789922, now seen corresponding path program 738 times [2020-01-16 18:12:48,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:48,642 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689833815] [2020-01-16 18:12:48,642 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:48,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:49,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:12:49,186 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689833815] [2020-01-16 18:12:49,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:49,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:49,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093267917] [2020-01-16 18:12:49,186 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:49,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:49,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:49,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:49,187 INFO L87 Difference]: Start difference. First operand 1587 states and 7089 transitions. Second operand 11 states. [2020-01-16 18:12:49,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:49,371 INFO L93 Difference]: Finished difference Result 2989 states and 11787 transitions. [2020-01-16 18:12:49,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:49,371 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:49,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:49,379 INFO L225 Difference]: With dead ends: 2989 [2020-01-16 18:12:49,379 INFO L226 Difference]: Without dead ends: 2954 [2020-01-16 18:12:49,379 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 18:12:49,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2020-01-16 18:12:49,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 1570. [2020-01-16 18:12:49,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:12:49,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7052 transitions. [2020-01-16 18:12:49,446 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7052 transitions. Word has length 28 [2020-01-16 18:12:49,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:49,446 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7052 transitions. [2020-01-16 18:12:49,446 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:49,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7052 transitions. [2020-01-16 18:12:49,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:49,449 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:49,449 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 18:12:49,449 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 18:12:49,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:49,449 INFO L82 PathProgramCache]: Analyzing trace with hash 840419904, now seen corresponding path program 739 times [2020-01-16 18:12:49,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:49,449 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217557560] [2020-01-16 18:12:49,449 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:49,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:49,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:12:49,982 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217557560] [2020-01-16 18:12:49,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:49,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:49,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839932612] [2020-01-16 18:12:49,982 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:49,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:49,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:49,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:49,983 INFO L87 Difference]: Start difference. First operand 1570 states and 7052 transitions. Second operand 11 states. [2020-01-16 18:12:50,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:50,174 INFO L93 Difference]: Finished difference Result 2986 states and 11797 transitions. [2020-01-16 18:12:50,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:50,174 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:50,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:50,181 INFO L225 Difference]: With dead ends: 2986 [2020-01-16 18:12:50,181 INFO L226 Difference]: Without dead ends: 2970 [2020-01-16 18:12:50,181 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 18:12:50,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2970 states. [2020-01-16 18:12:50,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2970 to 1585. [2020-01-16 18:12:50,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 18:12:50,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7093 transitions. [2020-01-16 18:12:50,248 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7093 transitions. Word has length 28 [2020-01-16 18:12:50,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:50,248 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7093 transitions. [2020-01-16 18:12:50,248 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:50,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7093 transitions. [2020-01-16 18:12:50,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:50,272 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:50,272 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 18:12:50,272 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 18:12:50,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:50,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1585122402, now seen corresponding path program 740 times [2020-01-16 18:12:50,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:50,273 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183185864] [2020-01-16 18:12:50,273 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:50,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:50,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:12:50,809 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183185864] [2020-01-16 18:12:50,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:50,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:50,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465141040] [2020-01-16 18:12:50,809 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:50,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:50,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:50,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:50,810 INFO L87 Difference]: Start difference. First operand 1585 states and 7093 transitions. Second operand 11 states. [2020-01-16 18:12:50,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:50,942 INFO L93 Difference]: Finished difference Result 2990 states and 11798 transitions. [2020-01-16 18:12:50,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:50,942 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:50,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:50,949 INFO L225 Difference]: With dead ends: 2990 [2020-01-16 18:12:50,949 INFO L226 Difference]: Without dead ends: 2963 [2020-01-16 18:12:50,950 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 18:12:50,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2963 states. [2020-01-16 18:12:51,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2963 to 1578. [2020-01-16 18:12:51,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:12:51,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7073 transitions. [2020-01-16 18:12:51,017 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7073 transitions. Word has length 28 [2020-01-16 18:12:51,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:51,017 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7073 transitions. [2020-01-16 18:12:51,017 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:51,017 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7073 transitions. [2020-01-16 18:12:51,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:51,019 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:51,019 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:12:51,019 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 18:12:51,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:51,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1843606434, now seen corresponding path program 741 times [2020-01-16 18:12:51,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:51,020 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561491722] [2020-01-16 18:12:51,020 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:51,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:51,543 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 18:12:51,543 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561491722] [2020-01-16 18:12:51,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:51,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:51,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658840996] [2020-01-16 18:12:51,544 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:51,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:51,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:51,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:51,544 INFO L87 Difference]: Start difference. First operand 1578 states and 7073 transitions. Second operand 11 states. [2020-01-16 18:12:51,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:51,714 INFO L93 Difference]: Finished difference Result 2983 states and 11785 transitions. [2020-01-16 18:12:51,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:51,715 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:51,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:51,722 INFO L225 Difference]: With dead ends: 2983 [2020-01-16 18:12:51,722 INFO L226 Difference]: Without dead ends: 2967 [2020-01-16 18:12:51,722 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 18:12:51,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2967 states. [2020-01-16 18:12:51,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2967 to 1584. [2020-01-16 18:12:51,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1584 states. [2020-01-16 18:12:51,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 7084 transitions. [2020-01-16 18:12:51,789 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 7084 transitions. Word has length 28 [2020-01-16 18:12:51,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:51,790 INFO L478 AbstractCegarLoop]: Abstraction has 1584 states and 7084 transitions. [2020-01-16 18:12:51,790 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:51,790 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 7084 transitions. [2020-01-16 18:12:51,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:51,792 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:51,792 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 18:12:51,792 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 18:12:51,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:51,792 INFO L82 PathProgramCache]: Analyzing trace with hash -354201438, now seen corresponding path program 742 times [2020-01-16 18:12:51,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:51,792 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562919799] [2020-01-16 18:12:51,792 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:51,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:52,321 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 18:12:52,322 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562919799] [2020-01-16 18:12:52,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:52,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:52,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561205727] [2020-01-16 18:12:52,322 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:52,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:52,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:52,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:52,322 INFO L87 Difference]: Start difference. First operand 1584 states and 7084 transitions. Second operand 11 states. [2020-01-16 18:12:52,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:52,504 INFO L93 Difference]: Finished difference Result 2985 states and 11783 transitions. [2020-01-16 18:12:52,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:52,504 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:52,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:52,511 INFO L225 Difference]: With dead ends: 2985 [2020-01-16 18:12:52,511 INFO L226 Difference]: Without dead ends: 2961 [2020-01-16 18:12:52,511 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 18:12:52,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2020-01-16 18:12:52,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 1578. [2020-01-16 18:12:52,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:12:52,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7067 transitions. [2020-01-16 18:12:52,578 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7067 transitions. Word has length 28 [2020-01-16 18:12:52,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:52,579 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7067 transitions. [2020-01-16 18:12:52,579 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:52,579 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7067 transitions. [2020-01-16 18:12:52,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:52,581 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:52,581 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 18:12:52,581 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 18:12:52,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:52,581 INFO L82 PathProgramCache]: Analyzing trace with hash 512037022, now seen corresponding path program 743 times [2020-01-16 18:12:52,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:52,581 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94272319] [2020-01-16 18:12:52,581 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:52,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:53,122 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 18:12:53,123 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94272319] [2020-01-16 18:12:53,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:53,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:53,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765469614] [2020-01-16 18:12:53,123 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:53,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:53,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:53,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:53,124 INFO L87 Difference]: Start difference. First operand 1578 states and 7067 transitions. Second operand 11 states. [2020-01-16 18:12:53,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:53,268 INFO L93 Difference]: Finished difference Result 2995 states and 11802 transitions. [2020-01-16 18:12:53,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:53,269 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:53,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:53,275 INFO L225 Difference]: With dead ends: 2995 [2020-01-16 18:12:53,275 INFO L226 Difference]: Without dead ends: 2975 [2020-01-16 18:12:53,275 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:12:53,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2975 states. [2020-01-16 18:12:53,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2975 to 1588. [2020-01-16 18:12:53,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1588 states. [2020-01-16 18:12:53,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 7084 transitions. [2020-01-16 18:12:53,343 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 7084 transitions. Word has length 28 [2020-01-16 18:12:53,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:53,343 INFO L478 AbstractCegarLoop]: Abstraction has 1588 states and 7084 transitions. [2020-01-16 18:12:53,343 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:53,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 7084 transitions. [2020-01-16 18:12:53,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:53,345 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:53,345 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 18:12:53,345 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 18:12:53,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:53,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1256739520, now seen corresponding path program 744 times [2020-01-16 18:12:53,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:53,346 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264742040] [2020-01-16 18:12:53,346 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:53,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:53,880 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:12:53,887 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 18:12:53,888 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264742040] [2020-01-16 18:12:53,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:53,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:53,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546076731] [2020-01-16 18:12:53,888 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:53,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:53,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:53,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:53,889 INFO L87 Difference]: Start difference. First operand 1588 states and 7084 transitions. Second operand 11 states. [2020-01-16 18:12:54,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:54,072 INFO L93 Difference]: Finished difference Result 2993 states and 11790 transitions. [2020-01-16 18:12:54,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:54,072 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:54,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:54,079 INFO L225 Difference]: With dead ends: 2993 [2020-01-16 18:12:54,079 INFO L226 Difference]: Without dead ends: 2950 [2020-01-16 18:12:54,079 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 18:12:54,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2020-01-16 18:12:54,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 1563. [2020-01-16 18:12:54,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 18:12:54,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7032 transitions. [2020-01-16 18:12:54,147 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7032 transitions. Word has length 28 [2020-01-16 18:12:54,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:54,147 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7032 transitions. [2020-01-16 18:12:54,147 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:54,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7032 transitions. [2020-01-16 18:12:54,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:54,149 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:54,150 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 18:12:54,150 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 18:12:54,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:54,150 INFO L82 PathProgramCache]: Analyzing trace with hash -725043348, now seen corresponding path program 745 times [2020-01-16 18:12:54,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:54,150 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385990221] [2020-01-16 18:12:54,150 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:54,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:54,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:12:54,672 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385990221] [2020-01-16 18:12:54,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:54,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:54,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061102117] [2020-01-16 18:12:54,672 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:54,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:54,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:54,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:54,673 INFO L87 Difference]: Start difference. First operand 1563 states and 7032 transitions. Second operand 11 states. [2020-01-16 18:12:54,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:54,877 INFO L93 Difference]: Finished difference Result 2962 states and 11754 transitions. [2020-01-16 18:12:54,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:54,877 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:54,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:54,884 INFO L225 Difference]: With dead ends: 2962 [2020-01-16 18:12:54,884 INFO L226 Difference]: Without dead ends: 2947 [2020-01-16 18:12:54,884 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 18:12:54,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2947 states. [2020-01-16 18:12:54,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2947 to 1580. [2020-01-16 18:12:54,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:12:54,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7091 transitions. [2020-01-16 18:12:54,951 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7091 transitions. Word has length 28 [2020-01-16 18:12:54,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:54,951 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7091 transitions. [2020-01-16 18:12:54,952 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:54,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7091 transitions. [2020-01-16 18:12:54,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:54,954 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:54,954 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 18:12:54,954 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 18:12:54,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:54,954 INFO L82 PathProgramCache]: Analyzing trace with hash 19659150, now seen corresponding path program 746 times [2020-01-16 18:12:54,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:54,954 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498961845] [2020-01-16 18:12:54,955 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:54,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:55,483 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 18:12:55,483 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498961845] [2020-01-16 18:12:55,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:55,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:55,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46547860] [2020-01-16 18:12:55,484 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:55,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:55,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:55,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:55,484 INFO L87 Difference]: Start difference. First operand 1580 states and 7091 transitions. Second operand 11 states. [2020-01-16 18:12:55,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:55,663 INFO L93 Difference]: Finished difference Result 2963 states and 11751 transitions. [2020-01-16 18:12:55,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:55,664 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:55,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:55,671 INFO L225 Difference]: With dead ends: 2963 [2020-01-16 18:12:55,671 INFO L226 Difference]: Without dead ends: 2942 [2020-01-16 18:12:55,671 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 18:12:55,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2020-01-16 18:12:55,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 1575. [2020-01-16 18:12:55,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:12:55,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7077 transitions. [2020-01-16 18:12:55,738 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7077 transitions. Word has length 28 [2020-01-16 18:12:55,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:55,738 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7077 transitions. [2020-01-16 18:12:55,738 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:55,738 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7077 transitions. [2020-01-16 18:12:55,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:55,740 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:55,740 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 18:12:55,740 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 18:12:55,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:55,740 INFO L82 PathProgramCache]: Analyzing trace with hash 885897610, now seen corresponding path program 747 times [2020-01-16 18:12:55,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:55,741 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272383639] [2020-01-16 18:12:55,741 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:55,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:56,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:12:56,300 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272383639] [2020-01-16 18:12:56,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:56,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:56,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010108652] [2020-01-16 18:12:56,300 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:56,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:56,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:56,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:56,301 INFO L87 Difference]: Start difference. First operand 1575 states and 7077 transitions. Second operand 11 states. [2020-01-16 18:12:56,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:56,477 INFO L93 Difference]: Finished difference Result 2967 states and 11758 transitions. [2020-01-16 18:12:56,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:56,477 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:56,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:56,484 INFO L225 Difference]: With dead ends: 2967 [2020-01-16 18:12:56,484 INFO L226 Difference]: Without dead ends: 2952 [2020-01-16 18:12:56,484 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 18:12:56,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2020-01-16 18:12:56,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 1581. [2020-01-16 18:12:56,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:12:56,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7088 transitions. [2020-01-16 18:12:56,552 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7088 transitions. Word has length 28 [2020-01-16 18:12:56,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:56,552 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7088 transitions. [2020-01-16 18:12:56,552 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:56,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7088 transitions. [2020-01-16 18:12:56,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:56,554 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:56,554 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 18:12:56,554 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 18:12:56,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:56,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1919664690, now seen corresponding path program 748 times [2020-01-16 18:12:56,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:56,555 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289656121] [2020-01-16 18:12:56,555 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:56,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:57,083 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 18:12:57,083 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289656121] [2020-01-16 18:12:57,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:57,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:57,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108898153] [2020-01-16 18:12:57,084 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:57,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:57,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:57,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:57,084 INFO L87 Difference]: Start difference. First operand 1581 states and 7088 transitions. Second operand 11 states. [2020-01-16 18:12:57,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:57,227 INFO L93 Difference]: Finished difference Result 2972 states and 11762 transitions. [2020-01-16 18:12:57,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:57,228 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:57,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:57,235 INFO L225 Difference]: With dead ends: 2972 [2020-01-16 18:12:57,235 INFO L226 Difference]: Without dead ends: 2946 [2020-01-16 18:12:57,236 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 18:12:57,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2946 states. [2020-01-16 18:12:57,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2946 to 1575. [2020-01-16 18:12:57,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:12:57,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7071 transitions. [2020-01-16 18:12:57,303 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7071 transitions. Word has length 28 [2020-01-16 18:12:57,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:57,303 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7071 transitions. [2020-01-16 18:12:57,303 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:57,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7071 transitions. [2020-01-16 18:12:57,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:57,305 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:57,305 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 18:12:57,306 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 18:12:57,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:57,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1053426230, now seen corresponding path program 749 times [2020-01-16 18:12:57,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:57,306 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653231800] [2020-01-16 18:12:57,306 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:57,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:57,826 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 18:12:57,826 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653231800] [2020-01-16 18:12:57,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:57,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:57,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459738178] [2020-01-16 18:12:57,827 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:57,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:57,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:57,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:57,827 INFO L87 Difference]: Start difference. First operand 1575 states and 7071 transitions. Second operand 11 states. [2020-01-16 18:12:58,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:58,004 INFO L93 Difference]: Finished difference Result 2970 states and 11759 transitions. [2020-01-16 18:12:58,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:58,004 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:58,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:58,011 INFO L225 Difference]: With dead ends: 2970 [2020-01-16 18:12:58,011 INFO L226 Difference]: Without dead ends: 2954 [2020-01-16 18:12:58,012 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:12:58,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2020-01-16 18:12:58,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 1582. [2020-01-16 18:12:58,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 18:12:58,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7084 transitions. [2020-01-16 18:12:58,079 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7084 transitions. Word has length 28 [2020-01-16 18:12:58,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:58,079 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7084 transitions. [2020-01-16 18:12:58,079 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:58,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7084 transitions. [2020-01-16 18:12:58,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:58,082 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:58,082 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:12:58,082 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 18:12:58,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:58,082 INFO L82 PathProgramCache]: Analyzing trace with hash -308723732, now seen corresponding path program 750 times [2020-01-16 18:12:58,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:58,082 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339413820] [2020-01-16 18:12:58,082 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:58,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:58,603 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 18:12:58,604 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339413820] [2020-01-16 18:12:58,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:58,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:58,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575096086] [2020-01-16 18:12:58,604 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:58,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:58,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:58,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:58,605 INFO L87 Difference]: Start difference. First operand 1582 states and 7084 transitions. Second operand 11 states. [2020-01-16 18:12:58,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:58,777 INFO L93 Difference]: Finished difference Result 2974 states and 11760 transitions. [2020-01-16 18:12:58,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:58,778 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:58,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:58,784 INFO L225 Difference]: With dead ends: 2974 [2020-01-16 18:12:58,785 INFO L226 Difference]: Without dead ends: 2941 [2020-01-16 18:12:58,785 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:12:58,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2941 states. [2020-01-16 18:12:58,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2941 to 1569. [2020-01-16 18:12:58,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:12:58,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7054 transitions. [2020-01-16 18:12:58,855 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7054 transitions. Word has length 28 [2020-01-16 18:12:58,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:58,855 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7054 transitions. [2020-01-16 18:12:58,856 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:58,856 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7054 transitions. [2020-01-16 18:12:58,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:58,858 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:58,858 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:12:58,858 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 18:12:58,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:58,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1550256474, now seen corresponding path program 751 times [2020-01-16 18:12:58,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:58,858 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140537652] [2020-01-16 18:12:58,858 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:58,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:12:59,395 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 18:12:59,396 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140537652] [2020-01-16 18:12:59,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:12:59,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:12:59,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501444975] [2020-01-16 18:12:59,396 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:12:59,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:12:59,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:12:59,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:12:59,397 INFO L87 Difference]: Start difference. First operand 1569 states and 7054 transitions. Second operand 11 states. [2020-01-16 18:12:59,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:12:59,576 INFO L93 Difference]: Finished difference Result 2956 states and 11736 transitions. [2020-01-16 18:12:59,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:12:59,576 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:12:59,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:12:59,583 INFO L225 Difference]: With dead ends: 2956 [2020-01-16 18:12:59,583 INFO L226 Difference]: Without dead ends: 2941 [2020-01-16 18:12:59,583 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:12:59,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2941 states. [2020-01-16 18:12:59,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2941 to 1579. [2020-01-16 18:12:59,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:12:59,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7082 transitions. [2020-01-16 18:12:59,652 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7082 transitions. Word has length 28 [2020-01-16 18:12:59,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:12:59,653 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7082 transitions. [2020-01-16 18:12:59,653 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:12:59,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7082 transitions. [2020-01-16 18:12:59,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:12:59,655 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:12:59,655 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:12:59,655 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 18:12:59,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:12:59,655 INFO L82 PathProgramCache]: Analyzing trace with hash -805553976, now seen corresponding path program 752 times [2020-01-16 18:12:59,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:12:59,656 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408950069] [2020-01-16 18:12:59,656 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:12:59,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:00,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:13:00,186 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408950069] [2020-01-16 18:13:00,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:00,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:00,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149491982] [2020-01-16 18:13:00,187 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:00,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:00,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:00,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:00,187 INFO L87 Difference]: Start difference. First operand 1579 states and 7082 transitions. Second operand 11 states. [2020-01-16 18:13:00,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:00,363 INFO L93 Difference]: Finished difference Result 2957 states and 11733 transitions. [2020-01-16 18:13:00,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:00,363 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:00,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:00,370 INFO L225 Difference]: With dead ends: 2957 [2020-01-16 18:13:00,371 INFO L226 Difference]: Without dead ends: 2936 [2020-01-16 18:13:00,371 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:13:00,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2936 states. [2020-01-16 18:13:00,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2936 to 1574. [2020-01-16 18:13:00,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:13:00,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7068 transitions. [2020-01-16 18:13:00,439 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7068 transitions. Word has length 28 [2020-01-16 18:13:00,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:00,439 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7068 transitions. [2020-01-16 18:13:00,439 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:00,439 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7068 transitions. [2020-01-16 18:13:00,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:00,441 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:00,441 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 18:13:00,441 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 18:13:00,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:00,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1136395640, now seen corresponding path program 753 times [2020-01-16 18:13:00,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:00,442 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510223198] [2020-01-16 18:13:00,442 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:00,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:00,969 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 18:13:00,969 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510223198] [2020-01-16 18:13:00,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:00,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:00,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806910099] [2020-01-16 18:13:00,970 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:00,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:00,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:00,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:00,970 INFO L87 Difference]: Start difference. First operand 1574 states and 7068 transitions. Second operand 11 states. [2020-01-16 18:13:01,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:01,190 INFO L93 Difference]: Finished difference Result 2957 states and 11733 transitions. [2020-01-16 18:13:01,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:01,190 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:01,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:01,198 INFO L225 Difference]: With dead ends: 2957 [2020-01-16 18:13:01,198 INFO L226 Difference]: Without dead ends: 2942 [2020-01-16 18:13:01,198 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:13:01,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2020-01-16 18:13:01,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 1579. [2020-01-16 18:13:01,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:13:01,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7077 transitions. [2020-01-16 18:13:01,265 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7077 transitions. Word has length 28 [2020-01-16 18:13:01,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:01,265 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7077 transitions. [2020-01-16 18:13:01,265 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:01,265 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7077 transitions. [2020-01-16 18:13:01,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:01,268 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:01,268 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:13:01,268 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 18:13:01,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:01,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1495918968, now seen corresponding path program 754 times [2020-01-16 18:13:01,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:01,268 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554186121] [2020-01-16 18:13:01,268 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:01,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:01,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:13:01,837 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554186121] [2020-01-16 18:13:01,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:01,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:01,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304428773] [2020-01-16 18:13:01,837 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:01,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:01,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:01,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:01,838 INFO L87 Difference]: Start difference. First operand 1579 states and 7077 transitions. Second operand 11 states. [2020-01-16 18:13:02,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:02,056 INFO L93 Difference]: Finished difference Result 2959 states and 11732 transitions. [2020-01-16 18:13:02,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:02,057 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:02,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:02,064 INFO L225 Difference]: With dead ends: 2959 [2020-01-16 18:13:02,064 INFO L226 Difference]: Without dead ends: 2937 [2020-01-16 18:13:02,064 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 18:13:02,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2020-01-16 18:13:02,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 1574. [2020-01-16 18:13:02,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:13:02,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7063 transitions. [2020-01-16 18:13:02,132 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7063 transitions. Word has length 28 [2020-01-16 18:13:02,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:02,132 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7063 transitions. [2020-01-16 18:13:02,132 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:02,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7063 transitions. [2020-01-16 18:13:02,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:02,135 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:02,135 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:13:02,135 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 18:13:02,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:02,135 INFO L82 PathProgramCache]: Analyzing trace with hash -802928200, now seen corresponding path program 755 times [2020-01-16 18:13:02,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:02,135 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507613234] [2020-01-16 18:13:02,135 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:02,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:02,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:13:02,665 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507613234] [2020-01-16 18:13:02,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:02,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:02,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519219287] [2020-01-16 18:13:02,665 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:02,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:02,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:02,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:02,666 INFO L87 Difference]: Start difference. First operand 1574 states and 7063 transitions. Second operand 11 states. [2020-01-16 18:13:02,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:02,843 INFO L93 Difference]: Finished difference Result 2960 states and 11735 transitions. [2020-01-16 18:13:02,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:02,843 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:02,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:02,851 INFO L225 Difference]: With dead ends: 2960 [2020-01-16 18:13:02,851 INFO L226 Difference]: Without dead ends: 2944 [2020-01-16 18:13:02,851 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:13:02,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2944 states. [2020-01-16 18:13:02,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2944 to 1580. [2020-01-16 18:13:02,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:13:02,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7074 transitions. [2020-01-16 18:13:02,918 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7074 transitions. Word has length 28 [2020-01-16 18:13:02,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:02,919 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7074 transitions. [2020-01-16 18:13:02,919 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:02,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7074 transitions. [2020-01-16 18:13:02,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:02,921 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:02,921 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 18:13:02,921 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 18:13:02,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:02,921 INFO L82 PathProgramCache]: Analyzing trace with hash 115021990, now seen corresponding path program 756 times [2020-01-16 18:13:02,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:02,922 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011729177] [2020-01-16 18:13:02,922 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:02,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:03,446 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 18:13:03,446 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011729177] [2020-01-16 18:13:03,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:03,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:03,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368502658] [2020-01-16 18:13:03,447 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:03,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:03,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:03,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:03,447 INFO L87 Difference]: Start difference. First operand 1580 states and 7074 transitions. Second operand 11 states. [2020-01-16 18:13:03,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:03,632 INFO L93 Difference]: Finished difference Result 2961 states and 11731 transitions. [2020-01-16 18:13:03,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:03,632 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:03,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:03,639 INFO L225 Difference]: With dead ends: 2961 [2020-01-16 18:13:03,639 INFO L226 Difference]: Without dead ends: 2933 [2020-01-16 18:13:03,639 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 18:13:03,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2933 states. [2020-01-16 18:13:03,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2933 to 1569. [2020-01-16 18:13:03,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:13:03,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7049 transitions. [2020-01-16 18:13:03,706 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7049 transitions. Word has length 28 [2020-01-16 18:13:03,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:03,707 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7049 transitions. [2020-01-16 18:13:03,707 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:03,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7049 transitions. [2020-01-16 18:13:03,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:03,709 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:03,709 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:13:03,709 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 18:13:03,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:03,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1539753370, now seen corresponding path program 757 times [2020-01-16 18:13:03,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:03,709 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496582634] [2020-01-16 18:13:03,709 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:03,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:04,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:13:04,216 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496582634] [2020-01-16 18:13:04,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:04,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:04,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393336745] [2020-01-16 18:13:04,216 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:04,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:04,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:04,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:04,217 INFO L87 Difference]: Start difference. First operand 1569 states and 7049 transitions. Second operand 11 states. [2020-01-16 18:13:04,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:04,392 INFO L93 Difference]: Finished difference Result 2969 states and 11757 transitions. [2020-01-16 18:13:04,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:04,393 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:04,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:04,400 INFO L225 Difference]: With dead ends: 2969 [2020-01-16 18:13:04,400 INFO L226 Difference]: Without dead ends: 2954 [2020-01-16 18:13:04,400 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 18:13:04,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2020-01-16 18:13:04,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 1581. [2020-01-16 18:13:04,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:13:04,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7082 transitions. [2020-01-16 18:13:04,468 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7082 transitions. Word has length 28 [2020-01-16 18:13:04,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:04,468 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7082 transitions. [2020-01-16 18:13:04,468 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:04,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7082 transitions. [2020-01-16 18:13:04,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:04,470 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:04,470 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 18:13:04,470 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 18:13:04,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:04,471 INFO L82 PathProgramCache]: Analyzing trace with hash -50348374, now seen corresponding path program 758 times [2020-01-16 18:13:04,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:04,471 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563073919] [2020-01-16 18:13:04,471 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:04,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:05,007 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 18:13:05,007 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563073919] [2020-01-16 18:13:05,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:05,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:05,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345382396] [2020-01-16 18:13:05,008 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:05,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:05,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:05,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:05,008 INFO L87 Difference]: Start difference. First operand 1581 states and 7082 transitions. Second operand 11 states. [2020-01-16 18:13:05,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:05,155 INFO L93 Difference]: Finished difference Result 2974 states and 11761 transitions. [2020-01-16 18:13:05,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:05,155 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:05,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:05,163 INFO L225 Difference]: With dead ends: 2974 [2020-01-16 18:13:05,163 INFO L226 Difference]: Without dead ends: 2948 [2020-01-16 18:13:05,163 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 18:13:05,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2948 states. [2020-01-16 18:13:05,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2948 to 1575. [2020-01-16 18:13:05,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:13:05,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7065 transitions. [2020-01-16 18:13:05,232 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7065 transitions. Word has length 28 [2020-01-16 18:13:05,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:05,232 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7065 transitions. [2020-01-16 18:13:05,232 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:05,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7065 transitions. [2020-01-16 18:13:05,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:05,234 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:05,235 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 18:13:05,235 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 18:13:05,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:05,235 INFO L82 PathProgramCache]: Analyzing trace with hash -464042214, now seen corresponding path program 759 times [2020-01-16 18:13:05,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:05,235 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297605288] [2020-01-16 18:13:05,235 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:05,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:05,764 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 18:13:05,764 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297605288] [2020-01-16 18:13:05,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:05,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:05,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617016560] [2020-01-16 18:13:05,764 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:05,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:05,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:05,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:05,765 INFO L87 Difference]: Start difference. First operand 1575 states and 7065 transitions. Second operand 11 states. [2020-01-16 18:13:05,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:05,939 INFO L93 Difference]: Finished difference Result 2965 states and 11744 transitions. [2020-01-16 18:13:05,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:05,940 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:05,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:05,947 INFO L225 Difference]: With dead ends: 2965 [2020-01-16 18:13:05,947 INFO L226 Difference]: Without dead ends: 2950 [2020-01-16 18:13:05,947 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:13:05,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2020-01-16 18:13:06,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 1580. [2020-01-16 18:13:06,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:13:06,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7074 transitions. [2020-01-16 18:13:06,014 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7074 transitions. Word has length 28 [2020-01-16 18:13:06,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:06,014 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7074 transitions. [2020-01-16 18:13:06,014 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:06,014 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7074 transitions. [2020-01-16 18:13:06,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:06,016 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:06,016 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 18:13:06,016 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 18:13:06,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:06,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1198610474, now seen corresponding path program 760 times [2020-01-16 18:13:06,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:06,017 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348340781] [2020-01-16 18:13:06,017 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:06,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:06,547 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 18:13:06,547 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348340781] [2020-01-16 18:13:06,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:06,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:06,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400090755] [2020-01-16 18:13:06,548 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:06,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:06,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:06,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:06,550 INFO L87 Difference]: Start difference. First operand 1580 states and 7074 transitions. Second operand 11 states. [2020-01-16 18:13:06,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:06,776 INFO L93 Difference]: Finished difference Result 2967 states and 11743 transitions. [2020-01-16 18:13:06,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:06,777 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:06,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:06,784 INFO L225 Difference]: With dead ends: 2967 [2020-01-16 18:13:06,784 INFO L226 Difference]: Without dead ends: 2945 [2020-01-16 18:13:06,784 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 18:13:06,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2945 states. [2020-01-16 18:13:06,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2945 to 1575. [2020-01-16 18:13:06,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:13:06,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7060 transitions. [2020-01-16 18:13:06,851 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7060 transitions. Word has length 28 [2020-01-16 18:13:06,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:06,852 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7060 transitions. [2020-01-16 18:13:06,852 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:06,852 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7060 transitions. [2020-01-16 18:13:06,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:06,854 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:06,854 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:13:06,854 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 18:13:06,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:06,854 INFO L82 PathProgramCache]: Analyzing trace with hash -47722598, now seen corresponding path program 761 times [2020-01-16 18:13:06,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:06,855 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379919756] [2020-01-16 18:13:06,855 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:06,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:07,304 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 29 [2020-01-16 18:13:07,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:13:07,424 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379919756] [2020-01-16 18:13:07,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:07,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:07,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148335340] [2020-01-16 18:13:07,424 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:07,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:07,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:07,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:07,425 INFO L87 Difference]: Start difference. First operand 1575 states and 7060 transitions. Second operand 11 states. [2020-01-16 18:13:07,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:07,579 INFO L93 Difference]: Finished difference Result 2978 states and 11765 transitions. [2020-01-16 18:13:07,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:07,580 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:07,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:07,587 INFO L225 Difference]: With dead ends: 2978 [2020-01-16 18:13:07,587 INFO L226 Difference]: Without dead ends: 2958 [2020-01-16 18:13:07,587 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:13:07,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2958 states. [2020-01-16 18:13:07,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2958 to 1583. [2020-01-16 18:13:07,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:13:07,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7074 transitions. [2020-01-16 18:13:07,654 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7074 transitions. Word has length 28 [2020-01-16 18:13:07,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:07,654 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7074 transitions. [2020-01-16 18:13:07,654 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:07,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7074 transitions. [2020-01-16 18:13:07,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:07,656 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:07,656 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 18:13:07,656 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 18:13:07,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:07,656 INFO L82 PathProgramCache]: Analyzing trace with hash 125525094, now seen corresponding path program 762 times [2020-01-16 18:13:07,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:07,657 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535581815] [2020-01-16 18:13:07,657 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:07,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:08,182 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 18:13:08,183 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535581815] [2020-01-16 18:13:08,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:08,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:08,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968372371] [2020-01-16 18:13:08,183 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:08,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:08,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:08,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:08,184 INFO L87 Difference]: Start difference. First operand 1583 states and 7074 transitions. Second operand 11 states. [2020-01-16 18:13:08,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:08,383 INFO L93 Difference]: Finished difference Result 2975 states and 11752 transitions. [2020-01-16 18:13:08,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:08,383 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:08,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:08,391 INFO L225 Difference]: With dead ends: 2975 [2020-01-16 18:13:08,391 INFO L226 Difference]: Without dead ends: 2944 [2020-01-16 18:13:08,391 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:13:08,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2944 states. [2020-01-16 18:13:08,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2944 to 1569. [2020-01-16 18:13:08,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:13:08,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7043 transitions. [2020-01-16 18:13:08,460 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7043 transitions. Word has length 28 [2020-01-16 18:13:08,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:08,460 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7043 transitions. [2020-01-16 18:13:08,461 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:08,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7043 transitions. [2020-01-16 18:13:08,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:08,463 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:08,463 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:13:08,463 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 18:13:08,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:08,463 INFO L82 PathProgramCache]: Analyzing trace with hash -784547768, now seen corresponding path program 763 times [2020-01-16 18:13:08,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:08,463 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915640173] [2020-01-16 18:13:08,463 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:08,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:08,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:13:08,996 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915640173] [2020-01-16 18:13:08,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:08,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:08,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963708536] [2020-01-16 18:13:08,996 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:08,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:08,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:08,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:08,996 INFO L87 Difference]: Start difference. First operand 1569 states and 7043 transitions. Second operand 11 states. [2020-01-16 18:13:09,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:09,170 INFO L93 Difference]: Finished difference Result 2976 states and 11770 transitions. [2020-01-16 18:13:09,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:09,170 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:09,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:09,177 INFO L225 Difference]: With dead ends: 2976 [2020-01-16 18:13:09,177 INFO L226 Difference]: Without dead ends: 2960 [2020-01-16 18:13:09,177 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 18:13:09,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2960 states. [2020-01-16 18:13:09,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2960 to 1583. [2020-01-16 18:13:09,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:13:09,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7082 transitions. [2020-01-16 18:13:09,246 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7082 transitions. Word has length 28 [2020-01-16 18:13:09,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:09,246 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7082 transitions. [2020-01-16 18:13:09,246 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:09,246 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7082 transitions. [2020-01-16 18:13:09,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:09,248 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:09,248 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:13:09,249 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 18:13:09,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:09,249 INFO L82 PathProgramCache]: Analyzing trace with hash -39845270, now seen corresponding path program 764 times [2020-01-16 18:13:09,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:09,249 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617093515] [2020-01-16 18:13:09,249 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:09,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:09,793 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 18:13:09,794 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617093515] [2020-01-16 18:13:09,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:09,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:09,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526413180] [2020-01-16 18:13:09,794 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:09,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:09,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:09,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:09,794 INFO L87 Difference]: Start difference. First operand 1583 states and 7082 transitions. Second operand 11 states. [2020-01-16 18:13:09,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:09,945 INFO L93 Difference]: Finished difference Result 2980 states and 11771 transitions. [2020-01-16 18:13:09,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:09,945 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:09,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:09,952 INFO L225 Difference]: With dead ends: 2980 [2020-01-16 18:13:09,953 INFO L226 Difference]: Without dead ends: 2953 [2020-01-16 18:13:09,953 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 18:13:09,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2953 states. [2020-01-16 18:13:10,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2953 to 1576. [2020-01-16 18:13:10,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:13:10,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7062 transitions. [2020-01-16 18:13:10,021 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7062 transitions. Word has length 28 [2020-01-16 18:13:10,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:10,021 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7062 transitions. [2020-01-16 18:13:10,021 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:10,021 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7062 transitions. [2020-01-16 18:13:10,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:10,023 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:10,023 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:13:10,023 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 18:13:10,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:10,023 INFO L82 PathProgramCache]: Analyzing trace with hash 291163388, now seen corresponding path program 765 times [2020-01-16 18:13:10,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:10,024 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820576048] [2020-01-16 18:13:10,024 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:10,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:10,548 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 18:13:10,548 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820576048] [2020-01-16 18:13:10,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:10,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:10,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110718864] [2020-01-16 18:13:10,549 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:10,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:10,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:10,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:10,549 INFO L87 Difference]: Start difference. First operand 1576 states and 7062 transitions. Second operand 11 states. [2020-01-16 18:13:10,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:10,744 INFO L93 Difference]: Finished difference Result 2972 states and 11756 transitions. [2020-01-16 18:13:10,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:10,745 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:10,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:10,752 INFO L225 Difference]: With dead ends: 2972 [2020-01-16 18:13:10,752 INFO L226 Difference]: Without dead ends: 2956 [2020-01-16 18:13:10,752 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:13:10,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2020-01-16 18:13:10,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 1582. [2020-01-16 18:13:10,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 18:13:10,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7073 transitions. [2020-01-16 18:13:10,820 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7073 transitions. Word has length 28 [2020-01-16 18:13:10,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:10,820 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7073 transitions. [2020-01-16 18:13:10,820 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:10,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7073 transitions. [2020-01-16 18:13:10,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:10,823 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:10,823 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 18:13:10,823 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 18:13:10,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:10,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1209113578, now seen corresponding path program 766 times [2020-01-16 18:13:10,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:10,823 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209227629] [2020-01-16 18:13:10,823 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:10,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:11,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:13:11,358 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209227629] [2020-01-16 18:13:11,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:11,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:11,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404330176] [2020-01-16 18:13:11,359 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:11,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:11,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:11,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:11,359 INFO L87 Difference]: Start difference. First operand 1582 states and 7073 transitions. Second operand 11 states. [2020-01-16 18:13:11,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:11,579 INFO L93 Difference]: Finished difference Result 2973 states and 11752 transitions. [2020-01-16 18:13:11,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:11,579 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:11,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:11,586 INFO L225 Difference]: With dead ends: 2973 [2020-01-16 18:13:11,586 INFO L226 Difference]: Without dead ends: 2950 [2020-01-16 18:13:11,586 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:13:11,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2020-01-16 18:13:11,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 1576. [2020-01-16 18:13:11,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:13:11,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7056 transitions. [2020-01-16 18:13:11,653 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7056 transitions. Word has length 28 [2020-01-16 18:13:11,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:11,653 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7056 transitions. [2020-01-16 18:13:11,653 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:11,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7056 transitions. [2020-01-16 18:13:11,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:11,656 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:11,656 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 18:13:11,656 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 18:13:11,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:11,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1648160452, now seen corresponding path program 767 times [2020-01-16 18:13:11,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:11,656 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552668858] [2020-01-16 18:13:11,656 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:11,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:12,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:13:12,193 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552668858] [2020-01-16 18:13:12,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:12,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:12,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612043335] [2020-01-16 18:13:12,193 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:12,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:12,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:12,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:12,194 INFO L87 Difference]: Start difference. First operand 1576 states and 7056 transitions. Second operand 11 states. [2020-01-16 18:13:12,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:12,348 INFO L93 Difference]: Finished difference Result 2982 states and 11769 transitions. [2020-01-16 18:13:12,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:12,349 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:12,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:12,356 INFO L225 Difference]: With dead ends: 2982 [2020-01-16 18:13:12,356 INFO L226 Difference]: Without dead ends: 2962 [2020-01-16 18:13:12,356 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:13:12,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2962 states. [2020-01-16 18:13:12,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2962 to 1584. [2020-01-16 18:13:12,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1584 states. [2020-01-16 18:13:12,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 7070 transitions. [2020-01-16 18:13:12,429 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 7070 transitions. Word has length 28 [2020-01-16 18:13:12,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:12,429 INFO L478 AbstractCegarLoop]: Abstraction has 1584 states and 7070 transitions. [2020-01-16 18:13:12,429 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:12,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 7070 transitions. [2020-01-16 18:13:12,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:12,432 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:12,432 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:13:12,432 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 18:13:12,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:12,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1474912760, now seen corresponding path program 768 times [2020-01-16 18:13:12,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:12,432 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400549448] [2020-01-16 18:13:12,432 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:12,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:12,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:13:12,966 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400549448] [2020-01-16 18:13:12,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:12,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:12,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735698223] [2020-01-16 18:13:12,966 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:12,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:12,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:12,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:12,967 INFO L87 Difference]: Start difference. First operand 1584 states and 7070 transitions. Second operand 11 states. [2020-01-16 18:13:13,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:13,177 INFO L93 Difference]: Finished difference Result 2979 states and 11756 transitions. [2020-01-16 18:13:13,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:13,177 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:13,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:13,184 INFO L225 Difference]: With dead ends: 2979 [2020-01-16 18:13:13,185 INFO L226 Difference]: Without dead ends: 2941 [2020-01-16 18:13:13,185 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 18:13:13,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2941 states. [2020-01-16 18:13:13,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2941 to 1563. [2020-01-16 18:13:13,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 18:13:13,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7026 transitions. [2020-01-16 18:13:13,251 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7026 transitions. Word has length 28 [2020-01-16 18:13:13,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:13,252 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7026 transitions. [2020-01-16 18:13:13,252 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:13,252 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7026 transitions. [2020-01-16 18:13:13,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:13,254 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:13,254 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 18:13:13,254 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 18:13:13,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:13,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1292451582, now seen corresponding path program 769 times [2020-01-16 18:13:13,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:13,254 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423939568] [2020-01-16 18:13:13,255 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:13,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:13,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:13:13,775 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423939568] [2020-01-16 18:13:13,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:13,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:13,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985390521] [2020-01-16 18:13:13,776 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:13,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:13,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:13,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:13,776 INFO L87 Difference]: Start difference. First operand 1563 states and 7026 transitions. Second operand 11 states. [2020-01-16 18:13:14,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:14,038 INFO L93 Difference]: Finished difference Result 2948 states and 11716 transitions. [2020-01-16 18:13:14,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:14,038 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:14,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:14,045 INFO L225 Difference]: With dead ends: 2948 [2020-01-16 18:13:14,045 INFO L226 Difference]: Without dead ends: 2933 [2020-01-16 18:13:14,045 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:13:14,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2933 states. [2020-01-16 18:13:14,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2933 to 1578. [2020-01-16 18:13:14,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:13:14,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7078 transitions. [2020-01-16 18:13:14,111 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7078 transitions. Word has length 28 [2020-01-16 18:13:14,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:14,111 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7078 transitions. [2020-01-16 18:13:14,111 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:14,111 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7078 transitions. [2020-01-16 18:13:14,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:14,113 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:14,113 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:13:14,113 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 18:13:14,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:14,114 INFO L82 PathProgramCache]: Analyzing trace with hash -547749084, now seen corresponding path program 770 times [2020-01-16 18:13:14,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:14,114 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121931057] [2020-01-16 18:13:14,114 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:14,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:14,645 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 18:13:14,646 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121931057] [2020-01-16 18:13:14,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:14,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:14,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576948207] [2020-01-16 18:13:14,646 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:14,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:14,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:14,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:14,647 INFO L87 Difference]: Start difference. First operand 1578 states and 7078 transitions. Second operand 11 states. [2020-01-16 18:13:14,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:14,839 INFO L93 Difference]: Finished difference Result 2949 states and 11713 transitions. [2020-01-16 18:13:14,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:14,839 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:14,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:14,846 INFO L225 Difference]: With dead ends: 2949 [2020-01-16 18:13:14,846 INFO L226 Difference]: Without dead ends: 2928 [2020-01-16 18:13:14,846 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 18:13:14,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2020-01-16 18:13:14,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 1573. [2020-01-16 18:13:14,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:13:14,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7064 transitions. [2020-01-16 18:13:14,912 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7064 transitions. Word has length 28 [2020-01-16 18:13:14,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:14,912 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7064 transitions. [2020-01-16 18:13:14,913 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:14,913 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7064 transitions. [2020-01-16 18:13:14,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:14,915 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:14,915 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:13:14,915 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 18:13:14,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:14,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1929430334, now seen corresponding path program 771 times [2020-01-16 18:13:14,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:14,915 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878048219] [2020-01-16 18:13:14,915 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:14,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:15,430 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 18:13:15,431 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878048219] [2020-01-16 18:13:15,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:15,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:15,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733144171] [2020-01-16 18:13:15,431 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:15,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:15,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:15,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:15,432 INFO L87 Difference]: Start difference. First operand 1573 states and 7064 transitions. Second operand 11 states. [2020-01-16 18:13:15,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:15,660 INFO L93 Difference]: Finished difference Result 2950 states and 11715 transitions. [2020-01-16 18:13:15,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:15,661 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:15,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:15,668 INFO L225 Difference]: With dead ends: 2950 [2020-01-16 18:13:15,668 INFO L226 Difference]: Without dead ends: 2935 [2020-01-16 18:13:15,668 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:13:15,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2935 states. [2020-01-16 18:13:15,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2935 to 1578. [2020-01-16 18:13:15,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:13:15,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7073 transitions. [2020-01-16 18:13:15,737 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7073 transitions. Word has length 28 [2020-01-16 18:13:15,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:15,737 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7073 transitions. [2020-01-16 18:13:15,737 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:15,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7073 transitions. [2020-01-16 18:13:15,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:15,739 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:15,740 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 18:13:15,740 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 18:13:15,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:15,740 INFO L82 PathProgramCache]: Analyzing trace with hash -131429468, now seen corresponding path program 772 times [2020-01-16 18:13:15,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:15,740 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774411773] [2020-01-16 18:13:15,740 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:15,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:16,257 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 18:13:16,257 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774411773] [2020-01-16 18:13:16,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:16,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:16,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467409649] [2020-01-16 18:13:16,257 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:16,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:16,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:16,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:16,258 INFO L87 Difference]: Start difference. First operand 1578 states and 7073 transitions. Second operand 11 states. [2020-01-16 18:13:16,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:16,452 INFO L93 Difference]: Finished difference Result 2953 states and 11716 transitions. [2020-01-16 18:13:16,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:16,453 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:16,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:16,460 INFO L225 Difference]: With dead ends: 2953 [2020-01-16 18:13:16,460 INFO L226 Difference]: Without dead ends: 2930 [2020-01-16 18:13:16,461 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:13:16,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2020-01-16 18:13:16,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1573. [2020-01-16 18:13:16,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:13:16,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7059 transitions. [2020-01-16 18:13:16,528 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7059 transitions. Word has length 28 [2020-01-16 18:13:16,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:16,529 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7059 transitions. [2020-01-16 18:13:16,529 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:16,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7059 transitions. [2020-01-16 18:13:16,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:16,531 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:16,531 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 18:13:16,531 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 18:13:16,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:16,531 INFO L82 PathProgramCache]: Analyzing trace with hash -9893506, now seen corresponding path program 773 times [2020-01-16 18:13:16,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:16,531 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509860118] [2020-01-16 18:13:16,531 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:16,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:17,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:13:17,048 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509860118] [2020-01-16 18:13:17,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:17,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:17,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362895485] [2020-01-16 18:13:17,048 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:17,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:17,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:17,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:17,049 INFO L87 Difference]: Start difference. First operand 1573 states and 7059 transitions. Second operand 11 states. [2020-01-16 18:13:17,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:17,241 INFO L93 Difference]: Finished difference Result 2953 states and 11717 transitions. [2020-01-16 18:13:17,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:17,242 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:17,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:17,249 INFO L225 Difference]: With dead ends: 2953 [2020-01-16 18:13:17,249 INFO L226 Difference]: Without dead ends: 2937 [2020-01-16 18:13:17,250 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:13:17,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2020-01-16 18:13:17,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 1579. [2020-01-16 18:13:17,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:13:17,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7070 transitions. [2020-01-16 18:13:17,317 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7070 transitions. Word has length 28 [2020-01-16 18:13:17,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:17,317 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7070 transitions. [2020-01-16 18:13:17,317 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:17,317 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7070 transitions. [2020-01-16 18:13:17,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:17,319 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:17,319 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:13:17,319 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 18:13:17,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:17,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1479511490, now seen corresponding path program 774 times [2020-01-16 18:13:17,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:17,320 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205443081] [2020-01-16 18:13:17,320 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:17,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:17,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:13:17,851 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205443081] [2020-01-16 18:13:17,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:17,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:17,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087025873] [2020-01-16 18:13:17,851 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:17,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:17,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:17,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:17,852 INFO L87 Difference]: Start difference. First operand 1579 states and 7070 transitions. Second operand 11 states. [2020-01-16 18:13:18,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:18,035 INFO L93 Difference]: Finished difference Result 2955 states and 11715 transitions. [2020-01-16 18:13:18,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:18,036 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:18,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:18,043 INFO L225 Difference]: With dead ends: 2955 [2020-01-16 18:13:18,043 INFO L226 Difference]: Without dead ends: 2926 [2020-01-16 18:13:18,043 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:13:18,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2020-01-16 18:13:18,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 1568. [2020-01-16 18:13:18,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 18:13:18,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7045 transitions. [2020-01-16 18:13:18,109 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7045 transitions. Word has length 28 [2020-01-16 18:13:18,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:18,109 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7045 transitions. [2020-01-16 18:13:18,109 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:18,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7045 transitions. [2020-01-16 18:13:18,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:18,111 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:18,111 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:13:18,111 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 18:13:18,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:18,112 INFO L82 PathProgramCache]: Analyzing trace with hash -704706260, now seen corresponding path program 775 times [2020-01-16 18:13:18,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:18,112 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771432379] [2020-01-16 18:13:18,112 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:18,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:18,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:13:18,647 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771432379] [2020-01-16 18:13:18,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:18,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:18,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218595652] [2020-01-16 18:13:18,647 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:18,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:18,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:18,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:18,648 INFO L87 Difference]: Start difference. First operand 1568 states and 7045 transitions. Second operand 11 states. [2020-01-16 18:13:18,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:18,849 INFO L93 Difference]: Finished difference Result 2947 states and 11709 transitions. [2020-01-16 18:13:18,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:18,850 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:18,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:18,856 INFO L225 Difference]: With dead ends: 2947 [2020-01-16 18:13:18,857 INFO L226 Difference]: Without dead ends: 2932 [2020-01-16 18:13:18,857 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:13:18,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2932 states. [2020-01-16 18:13:18,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2932 to 1578. [2020-01-16 18:13:18,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:13:18,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7073 transitions. [2020-01-16 18:13:18,924 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7073 transitions. Word has length 28 [2020-01-16 18:13:18,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:18,924 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7073 transitions. [2020-01-16 18:13:18,924 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:18,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7073 transitions. [2020-01-16 18:13:18,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:18,926 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:18,926 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:13:18,927 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 18:13:18,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:18,927 INFO L82 PathProgramCache]: Analyzing trace with hash 39996238, now seen corresponding path program 776 times [2020-01-16 18:13:18,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:18,927 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643073399] [2020-01-16 18:13:18,927 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:18,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:19,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:13:19,454 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643073399] [2020-01-16 18:13:19,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:19,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:19,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025961901] [2020-01-16 18:13:19,454 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:19,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:19,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:19,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:19,455 INFO L87 Difference]: Start difference. First operand 1578 states and 7073 transitions. Second operand 11 states. [2020-01-16 18:13:19,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:19,636 INFO L93 Difference]: Finished difference Result 2948 states and 11706 transitions. [2020-01-16 18:13:19,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:19,636 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:19,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:19,643 INFO L225 Difference]: With dead ends: 2948 [2020-01-16 18:13:19,643 INFO L226 Difference]: Without dead ends: 2927 [2020-01-16 18:13:19,644 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:13:19,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2927 states. [2020-01-16 18:13:19,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2927 to 1573. [2020-01-16 18:13:19,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:13:19,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7059 transitions. [2020-01-16 18:13:19,710 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7059 transitions. Word has length 28 [2020-01-16 18:13:19,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:19,711 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7059 transitions. [2020-01-16 18:13:19,711 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:19,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7059 transitions. [2020-01-16 18:13:19,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:19,713 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:19,713 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 18:13:19,713 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 18:13:19,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:19,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1981945854, now seen corresponding path program 777 times [2020-01-16 18:13:19,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:19,713 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072283106] [2020-01-16 18:13:19,713 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:19,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:20,240 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 18:13:20,240 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072283106] [2020-01-16 18:13:20,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:20,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:20,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62491736] [2020-01-16 18:13:20,240 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:20,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:20,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:20,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:20,241 INFO L87 Difference]: Start difference. First operand 1573 states and 7059 transitions. Second operand 11 states. [2020-01-16 18:13:20,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:20,420 INFO L93 Difference]: Finished difference Result 2948 states and 11706 transitions. [2020-01-16 18:13:20,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:20,420 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:20,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:20,428 INFO L225 Difference]: With dead ends: 2948 [2020-01-16 18:13:20,428 INFO L226 Difference]: Without dead ends: 2933 [2020-01-16 18:13:20,428 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 18:13:20,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2933 states. [2020-01-16 18:13:20,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2933 to 1578. [2020-01-16 18:13:20,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:13:20,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7068 transitions. [2020-01-16 18:13:20,496 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7068 transitions. Word has length 28 [2020-01-16 18:13:20,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:20,496 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7068 transitions. [2020-01-16 18:13:20,496 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:20,496 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7068 transitions. [2020-01-16 18:13:20,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:20,499 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:20,499 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:13:20,499 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 18:13:20,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:20,499 INFO L82 PathProgramCache]: Analyzing trace with hash -650368754, now seen corresponding path program 778 times [2020-01-16 18:13:20,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:20,499 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166681545] [2020-01-16 18:13:20,499 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:20,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:21,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:13:21,030 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166681545] [2020-01-16 18:13:21,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:21,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:21,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995774599] [2020-01-16 18:13:21,030 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:21,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:21,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:21,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:21,031 INFO L87 Difference]: Start difference. First operand 1578 states and 7068 transitions. Second operand 11 states. [2020-01-16 18:13:21,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:21,217 INFO L93 Difference]: Finished difference Result 2950 states and 11705 transitions. [2020-01-16 18:13:21,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:21,218 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:21,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:21,225 INFO L225 Difference]: With dead ends: 2950 [2020-01-16 18:13:21,225 INFO L226 Difference]: Without dead ends: 2928 [2020-01-16 18:13:21,225 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 18:13:21,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2020-01-16 18:13:21,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 1573. [2020-01-16 18:13:21,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:13:21,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7054 transitions. [2020-01-16 18:13:21,292 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7054 transitions. Word has length 28 [2020-01-16 18:13:21,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:21,293 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7054 transitions. [2020-01-16 18:13:21,293 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:21,293 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7054 transitions. [2020-01-16 18:13:21,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:21,295 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:21,295 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:13:21,295 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 18:13:21,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:21,295 INFO L82 PathProgramCache]: Analyzing trace with hash 42622014, now seen corresponding path program 779 times [2020-01-16 18:13:21,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:21,296 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101273919] [2020-01-16 18:13:21,296 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:21,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:21,826 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 18:13:21,826 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101273919] [2020-01-16 18:13:21,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:21,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:21,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769574516] [2020-01-16 18:13:21,826 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:21,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:21,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:21,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:21,827 INFO L87 Difference]: Start difference. First operand 1573 states and 7054 transitions. Second operand 11 states. [2020-01-16 18:13:22,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:22,034 INFO L93 Difference]: Finished difference Result 2951 states and 11708 transitions. [2020-01-16 18:13:22,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:22,034 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:22,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:22,042 INFO L225 Difference]: With dead ends: 2951 [2020-01-16 18:13:22,042 INFO L226 Difference]: Without dead ends: 2935 [2020-01-16 18:13:22,042 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:13:22,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2935 states. [2020-01-16 18:13:22,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2935 to 1579. [2020-01-16 18:13:22,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:13:22,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7065 transitions. [2020-01-16 18:13:22,109 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7065 transitions. Word has length 28 [2020-01-16 18:13:22,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:22,109 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7065 transitions. [2020-01-16 18:13:22,109 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:22,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7065 transitions. [2020-01-16 18:13:22,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:22,111 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:22,111 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:13:22,111 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 18:13:22,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:22,112 INFO L82 PathProgramCache]: Analyzing trace with hash 960572204, now seen corresponding path program 780 times [2020-01-16 18:13:22,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:22,112 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800946821] [2020-01-16 18:13:22,112 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:22,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:22,649 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 18:13:22,650 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800946821] [2020-01-16 18:13:22,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:22,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:22,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268854391] [2020-01-16 18:13:22,650 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:22,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:22,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:22,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:22,651 INFO L87 Difference]: Start difference. First operand 1579 states and 7065 transitions. Second operand 11 states. [2020-01-16 18:13:22,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:22,826 INFO L93 Difference]: Finished difference Result 2952 states and 11704 transitions. [2020-01-16 18:13:22,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:22,827 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:22,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:22,834 INFO L225 Difference]: With dead ends: 2952 [2020-01-16 18:13:22,835 INFO L226 Difference]: Without dead ends: 2924 [2020-01-16 18:13:22,835 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 18:13:22,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2924 states. [2020-01-16 18:13:22,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2924 to 1568. [2020-01-16 18:13:22,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 18:13:22,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7040 transitions. [2020-01-16 18:13:22,901 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7040 transitions. Word has length 28 [2020-01-16 18:13:22,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:22,901 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7040 transitions. [2020-01-16 18:13:22,901 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:22,901 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7040 transitions. [2020-01-16 18:13:22,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:22,904 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:22,904 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 18:13:22,904 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 18:13:22,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:22,904 INFO L82 PathProgramCache]: Analyzing trace with hash -683700052, now seen corresponding path program 781 times [2020-01-16 18:13:22,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:22,904 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223829507] [2020-01-16 18:13:22,904 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:22,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:23,424 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 18:13:23,424 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223829507] [2020-01-16 18:13:23,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:23,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:23,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919003805] [2020-01-16 18:13:23,424 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:23,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:23,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:23,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:23,425 INFO L87 Difference]: Start difference. First operand 1568 states and 7040 transitions. Second operand 11 states. [2020-01-16 18:13:23,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:23,602 INFO L93 Difference]: Finished difference Result 2952 states and 11715 transitions. [2020-01-16 18:13:23,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:23,602 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:23,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:23,608 INFO L225 Difference]: With dead ends: 2952 [2020-01-16 18:13:23,609 INFO L226 Difference]: Without dead ends: 2937 [2020-01-16 18:13:23,609 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:13:23,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2020-01-16 18:13:23,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 1578. [2020-01-16 18:13:23,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:13:23,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7068 transitions. [2020-01-16 18:13:23,677 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7068 transitions. Word has length 28 [2020-01-16 18:13:23,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:23,677 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7068 transitions. [2020-01-16 18:13:23,677 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:23,677 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7068 transitions. [2020-01-16 18:13:23,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:23,680 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:23,680 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 18:13:23,680 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 18:13:23,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:23,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1550407442, now seen corresponding path program 782 times [2020-01-16 18:13:23,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:23,680 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472850605] [2020-01-16 18:13:23,680 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:23,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:24,204 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 18:13:24,205 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472850605] [2020-01-16 18:13:24,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:24,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:24,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552895929] [2020-01-16 18:13:24,205 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:24,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:24,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:24,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:24,206 INFO L87 Difference]: Start difference. First operand 1578 states and 7068 transitions. Second operand 11 states. [2020-01-16 18:13:24,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:24,384 INFO L93 Difference]: Finished difference Result 2955 states and 11716 transitions. [2020-01-16 18:13:24,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:24,385 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:24,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:24,392 INFO L225 Difference]: With dead ends: 2955 [2020-01-16 18:13:24,392 INFO L226 Difference]: Without dead ends: 2932 [2020-01-16 18:13:24,392 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:13:24,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2932 states. [2020-01-16 18:13:24,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2932 to 1573. [2020-01-16 18:13:24,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:13:24,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7054 transitions. [2020-01-16 18:13:24,493 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7054 transitions. Word has length 28 [2020-01-16 18:13:24,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:24,493 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7054 transitions. [2020-01-16 18:13:24,493 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:24,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7054 transitions. [2020-01-16 18:13:24,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:24,496 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:24,496 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 18:13:24,496 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 18:13:24,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:24,496 INFO L82 PathProgramCache]: Analyzing trace with hash -1218929854, now seen corresponding path program 783 times [2020-01-16 18:13:24,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:24,497 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776634449] [2020-01-16 18:13:24,497 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:24,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:25,013 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 18:13:25,013 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776634449] [2020-01-16 18:13:25,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:25,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:25,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050777434] [2020-01-16 18:13:25,014 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:25,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:25,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:25,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:25,014 INFO L87 Difference]: Start difference. First operand 1573 states and 7054 transitions. Second operand 11 states. [2020-01-16 18:13:25,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:25,180 INFO L93 Difference]: Finished difference Result 2951 states and 11708 transitions. [2020-01-16 18:13:25,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:25,181 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:25,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:25,188 INFO L225 Difference]: With dead ends: 2951 [2020-01-16 18:13:25,188 INFO L226 Difference]: Without dead ends: 2936 [2020-01-16 18:13:25,189 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:13:25,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2936 states. [2020-01-16 18:13:25,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2936 to 1578. [2020-01-16 18:13:25,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:13:25,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7063 transitions. [2020-01-16 18:13:25,255 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7063 transitions. Word has length 28 [2020-01-16 18:13:25,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:25,256 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7063 transitions. [2020-01-16 18:13:25,256 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:25,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7063 transitions. [2020-01-16 18:13:25,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:25,258 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:25,258 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 18:13:25,258 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 18:13:25,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:25,258 INFO L82 PathProgramCache]: Analyzing trace with hash 443722834, now seen corresponding path program 784 times [2020-01-16 18:13:25,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:25,258 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143179090] [2020-01-16 18:13:25,258 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:25,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:25,774 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 18:13:25,774 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143179090] [2020-01-16 18:13:25,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:25,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:25,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368704802] [2020-01-16 18:13:25,775 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:25,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:25,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:25,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:25,775 INFO L87 Difference]: Start difference. First operand 1578 states and 7063 transitions. Second operand 11 states. [2020-01-16 18:13:25,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:25,962 INFO L93 Difference]: Finished difference Result 2953 states and 11707 transitions. [2020-01-16 18:13:25,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:25,963 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:25,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:25,970 INFO L225 Difference]: With dead ends: 2953 [2020-01-16 18:13:25,971 INFO L226 Difference]: Without dead ends: 2931 [2020-01-16 18:13:25,971 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 18:13:26,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2931 states. [2020-01-16 18:13:26,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2931 to 1573. [2020-01-16 18:13:26,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:13:26,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7049 transitions. [2020-01-16 18:13:26,037 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7049 transitions. Word has length 28 [2020-01-16 18:13:26,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:26,037 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7049 transitions. [2020-01-16 18:13:26,038 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:26,038 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7049 transitions. [2020-01-16 18:13:26,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:26,040 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:26,040 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 18:13:26,040 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 18:13:26,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:26,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1553033218, now seen corresponding path program 785 times [2020-01-16 18:13:26,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:26,040 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296238752] [2020-01-16 18:13:26,040 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:26,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:26,565 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 18:13:26,565 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296238752] [2020-01-16 18:13:26,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:26,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:26,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655222839] [2020-01-16 18:13:26,565 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:26,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:26,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:26,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:26,566 INFO L87 Difference]: Start difference. First operand 1573 states and 7049 transitions. Second operand 11 states. [2020-01-16 18:13:26,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:26,785 INFO L93 Difference]: Finished difference Result 2959 states and 11721 transitions. [2020-01-16 18:13:26,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:26,786 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:26,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:26,793 INFO L225 Difference]: With dead ends: 2959 [2020-01-16 18:13:26,794 INFO L226 Difference]: Without dead ends: 2941 [2020-01-16 18:13:26,794 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 18:13:26,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2941 states. [2020-01-16 18:13:26,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2941 to 1580. [2020-01-16 18:13:26,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:13:26,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7062 transitions. [2020-01-16 18:13:26,862 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7062 transitions. Word has length 28 [2020-01-16 18:13:26,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:26,862 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7062 transitions. [2020-01-16 18:13:26,862 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:26,862 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7062 transitions. [2020-01-16 18:13:26,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:26,865 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:26,865 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 18:13:26,865 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 18:13:26,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:26,865 INFO L82 PathProgramCache]: Analyzing trace with hash 981578412, now seen corresponding path program 786 times [2020-01-16 18:13:26,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:26,865 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607334905] [2020-01-16 18:13:26,865 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:26,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:27,398 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 18:13:27,399 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607334905] [2020-01-16 18:13:27,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:27,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:27,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596419151] [2020-01-16 18:13:27,399 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:27,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:27,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:27,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:27,400 INFO L87 Difference]: Start difference. First operand 1580 states and 7062 transitions. Second operand 11 states. [2020-01-16 18:13:27,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:27,620 INFO L93 Difference]: Finished difference Result 2958 states and 11712 transitions. [2020-01-16 18:13:27,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:27,620 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:27,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:27,628 INFO L225 Difference]: With dead ends: 2958 [2020-01-16 18:13:27,628 INFO L226 Difference]: Without dead ends: 2929 [2020-01-16 18:13:27,628 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:13:27,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2929 states. [2020-01-16 18:13:27,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2929 to 1568. [2020-01-16 18:13:27,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 18:13:27,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7035 transitions. [2020-01-16 18:13:27,696 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7035 transitions. Word has length 28 [2020-01-16 18:13:27,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:27,696 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7035 transitions. [2020-01-16 18:13:27,696 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:27,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7035 transitions. [2020-01-16 18:13:27,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:27,698 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:27,699 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:13:27,699 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 18:13:27,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:27,699 INFO L82 PathProgramCache]: Analyzing trace with hash 71505550, now seen corresponding path program 787 times [2020-01-16 18:13:27,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:27,699 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027797270] [2020-01-16 18:13:27,699 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:27,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:28,234 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 18:13:28,234 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027797270] [2020-01-16 18:13:28,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:28,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:28,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371631111] [2020-01-16 18:13:28,235 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:28,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:28,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:28,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:28,235 INFO L87 Difference]: Start difference. First operand 1568 states and 7035 transitions. Second operand 11 states. [2020-01-16 18:13:28,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:28,473 INFO L93 Difference]: Finished difference Result 2959 states and 11729 transitions. [2020-01-16 18:13:28,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:28,473 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:28,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:28,481 INFO L225 Difference]: With dead ends: 2959 [2020-01-16 18:13:28,481 INFO L226 Difference]: Without dead ends: 2943 [2020-01-16 18:13:28,481 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:13:28,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2943 states. [2020-01-16 18:13:28,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2943 to 1580. [2020-01-16 18:13:28,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:13:28,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7069 transitions. [2020-01-16 18:13:28,549 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7069 transitions. Word has length 28 [2020-01-16 18:13:28,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:28,550 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7069 transitions. [2020-01-16 18:13:28,550 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:28,550 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7069 transitions. [2020-01-16 18:13:28,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:28,552 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:28,552 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:13:28,552 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 18:13:28,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:28,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1560910546, now seen corresponding path program 788 times [2020-01-16 18:13:28,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:28,553 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393682202] [2020-01-16 18:13:28,553 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:28,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:29,088 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 18:13:29,089 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393682202] [2020-01-16 18:13:29,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:29,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:29,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463744778] [2020-01-16 18:13:29,089 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:29,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:29,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:29,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:29,090 INFO L87 Difference]: Start difference. First operand 1580 states and 7069 transitions. Second operand 11 states. [2020-01-16 18:13:29,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:29,325 INFO L93 Difference]: Finished difference Result 2961 states and 11727 transitions. [2020-01-16 18:13:29,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:29,325 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:29,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:29,333 INFO L225 Difference]: With dead ends: 2961 [2020-01-16 18:13:29,333 INFO L226 Difference]: Without dead ends: 2937 [2020-01-16 18:13:29,333 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:13:29,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2020-01-16 18:13:29,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 1574. [2020-01-16 18:13:29,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:13:29,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7052 transitions. [2020-01-16 18:13:29,399 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7052 transitions. Word has length 28 [2020-01-16 18:13:29,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:29,399 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7052 transitions. [2020-01-16 18:13:29,399 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:29,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7052 transitions. [2020-01-16 18:13:29,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:29,401 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:29,401 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 18:13:29,402 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 18:13:29,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:29,402 INFO L82 PathProgramCache]: Analyzing trace with hash -463724252, now seen corresponding path program 789 times [2020-01-16 18:13:29,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:29,402 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990407879] [2020-01-16 18:13:29,402 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:29,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:29,937 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 18:13:29,938 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990407879] [2020-01-16 18:13:29,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:29,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:29,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240808846] [2020-01-16 18:13:29,938 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:29,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:29,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:29,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:29,938 INFO L87 Difference]: Start difference. First operand 1574 states and 7052 transitions. Second operand 11 states. [2020-01-16 18:13:30,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:30,139 INFO L93 Difference]: Finished difference Result 2958 states and 11721 transitions. [2020-01-16 18:13:30,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:30,140 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:30,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:30,147 INFO L225 Difference]: With dead ends: 2958 [2020-01-16 18:13:30,148 INFO L226 Difference]: Without dead ends: 2942 [2020-01-16 18:13:30,148 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 18:13:30,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2020-01-16 18:13:30,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 1580. [2020-01-16 18:13:30,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:13:30,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7063 transitions. [2020-01-16 18:13:30,215 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7063 transitions. Word has length 28 [2020-01-16 18:13:30,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:30,215 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7063 transitions. [2020-01-16 18:13:30,215 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:30,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7063 transitions. [2020-01-16 18:13:30,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:30,217 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:30,217 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 18:13:30,217 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 18:13:30,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:30,218 INFO L82 PathProgramCache]: Analyzing trace with hash 454225938, now seen corresponding path program 790 times [2020-01-16 18:13:30,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:30,218 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964013490] [2020-01-16 18:13:30,218 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:30,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:30,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:13:30,780 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964013490] [2020-01-16 18:13:30,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:30,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:30,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518276807] [2020-01-16 18:13:30,781 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:30,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:30,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:30,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:30,781 INFO L87 Difference]: Start difference. First operand 1580 states and 7063 transitions. Second operand 11 states. [2020-01-16 18:13:30,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:30,998 INFO L93 Difference]: Finished difference Result 2959 states and 11717 transitions. [2020-01-16 18:13:30,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:30,999 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:30,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:31,006 INFO L225 Difference]: With dead ends: 2959 [2020-01-16 18:13:31,006 INFO L226 Difference]: Without dead ends: 2936 [2020-01-16 18:13:31,007 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 18:13:31,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2936 states. [2020-01-16 18:13:31,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2936 to 1574. [2020-01-16 18:13:31,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:13:31,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7046 transitions. [2020-01-16 18:13:31,075 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7046 transitions. Word has length 28 [2020-01-16 18:13:31,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:31,076 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7046 transitions. [2020-01-16 18:13:31,076 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:31,076 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7046 transitions. [2020-01-16 18:13:31,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:31,078 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:31,078 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:13:31,078 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 18:13:31,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:31,078 INFO L82 PathProgramCache]: Analyzing trace with hash -47404636, now seen corresponding path program 791 times [2020-01-16 18:13:31,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:31,078 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809584752] [2020-01-16 18:13:31,079 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:31,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:31,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:13:31,613 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809584752] [2020-01-16 18:13:31,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:31,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:31,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730588775] [2020-01-16 18:13:31,613 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:31,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:31,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:31,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:31,614 INFO L87 Difference]: Start difference. First operand 1574 states and 7046 transitions. Second operand 11 states. [2020-01-16 18:13:31,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:31,792 INFO L93 Difference]: Finished difference Result 2963 states and 11726 transitions. [2020-01-16 18:13:31,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:31,793 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:31,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:31,800 INFO L225 Difference]: With dead ends: 2963 [2020-01-16 18:13:31,801 INFO L226 Difference]: Without dead ends: 2945 [2020-01-16 18:13:31,801 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 18:13:31,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2945 states. [2020-01-16 18:13:31,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2945 to 1581. [2020-01-16 18:13:31,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:13:31,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7059 transitions. [2020-01-16 18:13:31,870 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7059 transitions. Word has length 28 [2020-01-16 18:13:31,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:31,870 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7059 transitions. [2020-01-16 18:13:31,870 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:31,870 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7059 transitions. [2020-01-16 18:13:31,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:31,872 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:31,872 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:13:31,872 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 18:13:31,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:31,873 INFO L82 PathProgramCache]: Analyzing trace with hash -618859442, now seen corresponding path program 792 times [2020-01-16 18:13:31,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:31,873 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483234778] [2020-01-16 18:13:31,873 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:31,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:32,407 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:13:32,414 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 18:13:32,415 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483234778] [2020-01-16 18:13:32,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:32,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:32,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732427488] [2020-01-16 18:13:32,415 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:32,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:32,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:32,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:32,415 INFO L87 Difference]: Start difference. First operand 1581 states and 7059 transitions. Second operand 11 states. [2020-01-16 18:13:32,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:32,643 INFO L93 Difference]: Finished difference Result 2962 states and 11717 transitions. [2020-01-16 18:13:32,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:32,644 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:32,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:32,651 INFO L225 Difference]: With dead ends: 2962 [2020-01-16 18:13:32,651 INFO L226 Difference]: Without dead ends: 2927 [2020-01-16 18:13:32,651 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:13:32,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2927 states. [2020-01-16 18:13:32,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2927 to 1563. [2020-01-16 18:13:32,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 18:13:32,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7021 transitions. [2020-01-16 18:13:32,719 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7021 transitions. Word has length 28 [2020-01-16 18:13:32,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:32,720 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7021 transitions. [2020-01-16 18:13:32,720 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:32,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7021 transitions. [2020-01-16 18:13:32,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:32,722 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:32,722 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:13:32,722 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 18:13:32,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:32,722 INFO L82 PathProgramCache]: Analyzing trace with hash 644085600, now seen corresponding path program 793 times [2020-01-16 18:13:32,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:32,723 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132750715] [2020-01-16 18:13:32,723 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:32,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:33,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:13:33,249 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132750715] [2020-01-16 18:13:33,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:33,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:33,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55798288] [2020-01-16 18:13:33,249 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:33,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:33,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:33,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:33,250 INFO L87 Difference]: Start difference. First operand 1563 states and 7021 transitions. Second operand 11 states. [2020-01-16 18:13:33,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:33,431 INFO L93 Difference]: Finished difference Result 2985 states and 11793 transitions. [2020-01-16 18:13:33,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:33,431 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:33,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:33,439 INFO L225 Difference]: With dead ends: 2985 [2020-01-16 18:13:33,439 INFO L226 Difference]: Without dead ends: 2970 [2020-01-16 18:13:33,439 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:13:33,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2970 states. [2020-01-16 18:13:33,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2970 to 1584. [2020-01-16 18:13:33,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1584 states. [2020-01-16 18:13:33,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 7089 transitions. [2020-01-16 18:13:33,507 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 7089 transitions. Word has length 28 [2020-01-16 18:13:33,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:33,507 INFO L478 AbstractCegarLoop]: Abstraction has 1584 states and 7089 transitions. [2020-01-16 18:13:33,507 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:33,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 7089 transitions. [2020-01-16 18:13:33,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:33,509 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:33,509 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 18:13:33,509 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 18:13:33,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:33,509 INFO L82 PathProgramCache]: Analyzing trace with hash 2133490596, now seen corresponding path program 794 times [2020-01-16 18:13:33,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:33,510 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750062527] [2020-01-16 18:13:33,510 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:33,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:34,050 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 18:13:34,050 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750062527] [2020-01-16 18:13:34,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:34,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:34,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273003599] [2020-01-16 18:13:34,051 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:34,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:34,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:34,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:34,051 INFO L87 Difference]: Start difference. First operand 1584 states and 7089 transitions. Second operand 11 states. [2020-01-16 18:13:34,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:34,215 INFO L93 Difference]: Finished difference Result 2990 states and 11797 transitions. [2020-01-16 18:13:34,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:34,216 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:34,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:34,223 INFO L225 Difference]: With dead ends: 2990 [2020-01-16 18:13:34,224 INFO L226 Difference]: Without dead ends: 2964 [2020-01-16 18:13:34,224 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:13:34,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2964 states. [2020-01-16 18:13:34,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2964 to 1578. [2020-01-16 18:13:34,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:13:34,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7072 transitions. [2020-01-16 18:13:34,290 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7072 transitions. Word has length 28 [2020-01-16 18:13:34,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:34,290 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7072 transitions. [2020-01-16 18:13:34,290 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:34,291 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7072 transitions. [2020-01-16 18:13:34,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:34,293 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:34,293 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:13:34,293 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 18:13:34,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:34,293 INFO L82 PathProgramCache]: Analyzing trace with hash -2039940738, now seen corresponding path program 795 times [2020-01-16 18:13:34,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:34,293 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572784718] [2020-01-16 18:13:34,293 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:34,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:34,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:13:34,828 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572784718] [2020-01-16 18:13:34,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:34,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:34,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295456098] [2020-01-16 18:13:34,828 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:34,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:34,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:34,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:34,829 INFO L87 Difference]: Start difference. First operand 1578 states and 7072 transitions. Second operand 11 states. [2020-01-16 18:13:35,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:35,027 INFO L93 Difference]: Finished difference Result 2982 states and 11782 transitions. [2020-01-16 18:13:35,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:35,027 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:35,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:35,035 INFO L225 Difference]: With dead ends: 2982 [2020-01-16 18:13:35,035 INFO L226 Difference]: Without dead ends: 2967 [2020-01-16 18:13:35,035 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:13:35,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2967 states. [2020-01-16 18:13:35,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2967 to 1583. [2020-01-16 18:13:35,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:13:35,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7081 transitions. [2020-01-16 18:13:35,103 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7081 transitions. Word has length 28 [2020-01-16 18:13:35,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:35,103 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7081 transitions. [2020-01-16 18:13:35,103 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:35,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7081 transitions. [2020-01-16 18:13:35,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:35,105 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:35,105 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 18:13:35,105 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 18:13:35,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:35,105 INFO L82 PathProgramCache]: Analyzing trace with hash 194166756, now seen corresponding path program 796 times [2020-01-16 18:13:35,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:35,106 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102300101] [2020-01-16 18:13:35,106 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:35,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:35,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:13:35,636 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102300101] [2020-01-16 18:13:35,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:35,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:35,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470177391] [2020-01-16 18:13:35,636 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:35,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:35,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:35,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:35,636 INFO L87 Difference]: Start difference. First operand 1583 states and 7081 transitions. Second operand 11 states. [2020-01-16 18:13:35,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:35,844 INFO L93 Difference]: Finished difference Result 2985 states and 11783 transitions. [2020-01-16 18:13:35,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:35,844 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:35,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:35,852 INFO L225 Difference]: With dead ends: 2985 [2020-01-16 18:13:35,852 INFO L226 Difference]: Without dead ends: 2962 [2020-01-16 18:13:35,852 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 18:13:35,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2962 states. [2020-01-16 18:13:35,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2962 to 1578. [2020-01-16 18:13:35,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:13:35,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7067 transitions. [2020-01-16 18:13:35,919 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7067 transitions. Word has length 28 [2020-01-16 18:13:35,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:35,919 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7067 transitions. [2020-01-16 18:13:35,919 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:35,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7067 transitions. [2020-01-16 18:13:35,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:35,922 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:35,922 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 18:13:35,922 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 18:13:35,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:35,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1623621122, now seen corresponding path program 797 times [2020-01-16 18:13:35,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:35,922 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143552662] [2020-01-16 18:13:35,922 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:35,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:36,497 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:13:36,504 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 18:13:36,504 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143552662] [2020-01-16 18:13:36,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:36,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:36,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179036042] [2020-01-16 18:13:36,504 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:36,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:36,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:36,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:36,505 INFO L87 Difference]: Start difference. First operand 1578 states and 7067 transitions. Second operand 11 states. [2020-01-16 18:13:36,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:36,652 INFO L93 Difference]: Finished difference Result 2997 states and 11807 transitions. [2020-01-16 18:13:36,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:36,653 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:36,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:36,660 INFO L225 Difference]: With dead ends: 2997 [2020-01-16 18:13:36,660 INFO L226 Difference]: Without dead ends: 2977 [2020-01-16 18:13:36,661 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 18:13:36,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2977 states. [2020-01-16 18:13:36,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2977 to 1588. [2020-01-16 18:13:36,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1588 states. [2020-01-16 18:13:36,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 7084 transitions. [2020-01-16 18:13:36,734 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 7084 transitions. Word has length 28 [2020-01-16 18:13:36,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:36,734 INFO L478 AbstractCegarLoop]: Abstraction has 1588 states and 7084 transitions. [2020-01-16 18:13:36,734 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:36,734 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 7084 transitions. [2020-01-16 18:13:36,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:36,737 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:36,737 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:13:36,737 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 18:13:36,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:36,737 INFO L82 PathProgramCache]: Analyzing trace with hash -878918624, now seen corresponding path program 798 times [2020-01-16 18:13:36,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:36,737 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278903768] [2020-01-16 18:13:36,737 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:36,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:37,284 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 18:13:37,284 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278903768] [2020-01-16 18:13:37,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:37,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:37,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759281622] [2020-01-16 18:13:37,284 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:37,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:37,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:37,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:37,285 INFO L87 Difference]: Start difference. First operand 1588 states and 7084 transitions. Second operand 11 states. [2020-01-16 18:13:37,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:37,490 INFO L93 Difference]: Finished difference Result 2995 states and 11795 transitions. [2020-01-16 18:13:37,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:37,491 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:37,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:37,498 INFO L225 Difference]: With dead ends: 2995 [2020-01-16 18:13:37,499 INFO L226 Difference]: Without dead ends: 2960 [2020-01-16 18:13:37,499 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 18:13:37,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2960 states. [2020-01-16 18:13:37,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2960 to 1571. [2020-01-16 18:13:37,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:13:37,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7047 transitions. [2020-01-16 18:13:37,565 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7047 transitions. Word has length 28 [2020-01-16 18:13:37,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:37,565 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7047 transitions. [2020-01-16 18:13:37,565 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:37,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7047 transitions. [2020-01-16 18:13:37,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:37,568 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:37,568 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 18:13:37,568 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 18:13:37,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:37,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1231830922, now seen corresponding path program 799 times [2020-01-16 18:13:37,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:37,568 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062316250] [2020-01-16 18:13:37,568 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:37,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:38,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:13:38,091 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062316250] [2020-01-16 18:13:38,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:38,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:38,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248816466] [2020-01-16 18:13:38,091 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:38,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:38,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:38,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:38,091 INFO L87 Difference]: Start difference. First operand 1571 states and 7047 transitions. Second operand 11 states. [2020-01-16 18:13:38,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:38,272 INFO L93 Difference]: Finished difference Result 2981 states and 11778 transitions. [2020-01-16 18:13:38,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:38,273 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:38,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:38,281 INFO L225 Difference]: With dead ends: 2981 [2020-01-16 18:13:38,281 INFO L226 Difference]: Without dead ends: 2966 [2020-01-16 18:13:38,281 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 18:13:38,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2966 states. [2020-01-16 18:13:38,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2966 to 1583. [2020-01-16 18:13:38,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:13:38,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7080 transitions. [2020-01-16 18:13:38,348 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7080 transitions. Word has length 28 [2020-01-16 18:13:38,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:38,348 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7080 transitions. [2020-01-16 18:13:38,348 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:38,348 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7080 transitions. [2020-01-16 18:13:38,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:38,350 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:38,350 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 18:13:38,351 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 18:13:38,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:38,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1573731378, now seen corresponding path program 800 times [2020-01-16 18:13:38,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:38,351 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458978529] [2020-01-16 18:13:38,351 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:38,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:38,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:13:38,880 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458978529] [2020-01-16 18:13:38,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:38,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:38,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625820120] [2020-01-16 18:13:38,880 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:38,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:38,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:38,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:38,880 INFO L87 Difference]: Start difference. First operand 1583 states and 7080 transitions. Second operand 11 states. [2020-01-16 18:13:39,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:39,032 INFO L93 Difference]: Finished difference Result 2986 states and 11782 transitions. [2020-01-16 18:13:39,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:39,032 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:39,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:39,040 INFO L225 Difference]: With dead ends: 2986 [2020-01-16 18:13:39,040 INFO L226 Difference]: Without dead ends: 2960 [2020-01-16 18:13:39,041 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 18:13:39,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2960 states. [2020-01-16 18:13:39,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2960 to 1577. [2020-01-16 18:13:39,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:13:39,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7063 transitions. [2020-01-16 18:13:39,108 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7063 transitions. Word has length 28 [2020-01-16 18:13:39,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:39,108 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7063 transitions. [2020-01-16 18:13:39,108 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:39,108 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7063 transitions. [2020-01-16 18:13:39,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:39,110 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:39,110 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 18:13:39,110 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 18:13:39,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:39,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1987425218, now seen corresponding path program 801 times [2020-01-16 18:13:39,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:39,111 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401258098] [2020-01-16 18:13:39,111 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:39,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:39,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:13:39,635 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401258098] [2020-01-16 18:13:39,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:39,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:39,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551789068] [2020-01-16 18:13:39,636 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:39,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:39,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:39,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:39,636 INFO L87 Difference]: Start difference. First operand 1577 states and 7063 transitions. Second operand 11 states. [2020-01-16 18:13:39,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:39,855 INFO L93 Difference]: Finished difference Result 2977 states and 11765 transitions. [2020-01-16 18:13:39,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:39,856 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:39,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:39,863 INFO L225 Difference]: With dead ends: 2977 [2020-01-16 18:13:39,863 INFO L226 Difference]: Without dead ends: 2962 [2020-01-16 18:13:39,863 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:13:39,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2962 states. [2020-01-16 18:13:39,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2962 to 1582. [2020-01-16 18:13:39,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 18:13:39,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7072 transitions. [2020-01-16 18:13:39,930 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7072 transitions. Word has length 28 [2020-01-16 18:13:39,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:39,930 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7072 transitions. [2020-01-16 18:13:39,930 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:39,930 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7072 transitions. [2020-01-16 18:13:39,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:39,933 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:39,933 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:13:39,933 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 18:13:39,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:39,933 INFO L82 PathProgramCache]: Analyzing trace with hash -324772530, now seen corresponding path program 802 times [2020-01-16 18:13:39,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:39,933 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862506957] [2020-01-16 18:13:39,933 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:39,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:40,461 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 18:13:40,461 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862506957] [2020-01-16 18:13:40,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:40,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:40,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362507066] [2020-01-16 18:13:40,462 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:40,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:40,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:40,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:40,462 INFO L87 Difference]: Start difference. First operand 1582 states and 7072 transitions. Second operand 11 states. [2020-01-16 18:13:40,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:40,643 INFO L93 Difference]: Finished difference Result 2979 states and 11764 transitions. [2020-01-16 18:13:40,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:40,644 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:40,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:40,651 INFO L225 Difference]: With dead ends: 2979 [2020-01-16 18:13:40,652 INFO L226 Difference]: Without dead ends: 2957 [2020-01-16 18:13:40,652 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:13:40,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2957 states. [2020-01-16 18:13:40,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2957 to 1577. [2020-01-16 18:13:40,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:13:40,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7058 transitions. [2020-01-16 18:13:40,719 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7058 transitions. Word has length 28 [2020-01-16 18:13:40,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:40,719 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7058 transitions. [2020-01-16 18:13:40,719 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:40,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7058 transitions. [2020-01-16 18:13:40,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:40,721 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:40,721 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:13:40,722 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 18:13:40,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:40,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1571105602, now seen corresponding path program 803 times [2020-01-16 18:13:40,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:40,722 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399684104] [2020-01-16 18:13:40,722 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:40,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:41,256 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 18:13:41,256 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399684104] [2020-01-16 18:13:41,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:41,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:41,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977259926] [2020-01-16 18:13:41,257 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:41,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:41,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:41,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:41,257 INFO L87 Difference]: Start difference. First operand 1577 states and 7058 transitions. Second operand 11 states. [2020-01-16 18:13:41,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:41,434 INFO L93 Difference]: Finished difference Result 2990 states and 11786 transitions. [2020-01-16 18:13:41,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:41,434 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:41,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:41,442 INFO L225 Difference]: With dead ends: 2990 [2020-01-16 18:13:41,442 INFO L226 Difference]: Without dead ends: 2970 [2020-01-16 18:13:41,442 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 18:13:41,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2970 states. [2020-01-16 18:13:41,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2970 to 1585. [2020-01-16 18:13:41,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 18:13:41,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7072 transitions. [2020-01-16 18:13:41,509 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7072 transitions. Word has length 28 [2020-01-16 18:13:41,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:41,509 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7072 transitions. [2020-01-16 18:13:41,509 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:41,509 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7072 transitions. [2020-01-16 18:13:41,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:41,512 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:41,512 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 18:13:41,512 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 18:13:41,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:41,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1397857910, now seen corresponding path program 804 times [2020-01-16 18:13:41,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:41,512 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968888867] [2020-01-16 18:13:41,512 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:41,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:42,057 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 18:13:42,058 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968888867] [2020-01-16 18:13:42,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:42,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:42,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641829364] [2020-01-16 18:13:42,058 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:42,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:42,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:42,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:42,058 INFO L87 Difference]: Start difference. First operand 1585 states and 7072 transitions. Second operand 11 states. [2020-01-16 18:13:42,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:42,230 INFO L93 Difference]: Finished difference Result 2987 states and 11773 transitions. [2020-01-16 18:13:42,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:42,231 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:42,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:42,238 INFO L225 Difference]: With dead ends: 2987 [2020-01-16 18:13:42,238 INFO L226 Difference]: Without dead ends: 2956 [2020-01-16 18:13:42,239 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 18:13:42,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2020-01-16 18:13:42,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 1571. [2020-01-16 18:13:42,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:13:42,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7041 transitions. [2020-01-16 18:13:42,305 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7041 transitions. Word has length 28 [2020-01-16 18:13:42,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:42,305 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7041 transitions. [2020-01-16 18:13:42,305 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:42,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7041 transitions. [2020-01-16 18:13:42,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:42,307 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:42,308 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:13:42,308 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 18:13:42,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:42,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1242334026, now seen corresponding path program 805 times [2020-01-16 18:13:42,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:42,308 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663701341] [2020-01-16 18:13:42,308 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:42,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:42,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:13:42,855 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663701341] [2020-01-16 18:13:42,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:42,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:42,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380631987] [2020-01-16 18:13:42,855 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:42,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:42,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:42,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:42,856 INFO L87 Difference]: Start difference. First operand 1571 states and 7041 transitions. Second operand 11 states. [2020-01-16 18:13:43,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:43,038 INFO L93 Difference]: Finished difference Result 2973 states and 11757 transitions. [2020-01-16 18:13:43,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:43,039 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:43,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:43,046 INFO L225 Difference]: With dead ends: 2973 [2020-01-16 18:13:43,046 INFO L226 Difference]: Without dead ends: 2958 [2020-01-16 18:13:43,046 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 18:13:43,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2958 states. [2020-01-16 18:13:43,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2958 to 1581. [2020-01-16 18:13:43,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:13:43,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7069 transitions. [2020-01-16 18:13:43,113 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7069 transitions. Word has length 28 [2020-01-16 18:13:43,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:43,113 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7069 transitions. [2020-01-16 18:13:43,113 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:43,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7069 transitions. [2020-01-16 18:13:43,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:43,115 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:43,115 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 18:13:43,116 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 18:13:43,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:43,116 INFO L82 PathProgramCache]: Analyzing trace with hash -818525776, now seen corresponding path program 806 times [2020-01-16 18:13:43,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:43,116 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822545047] [2020-01-16 18:13:43,116 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:43,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:43,633 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 18:13:43,634 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822545047] [2020-01-16 18:13:43,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:43,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:43,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449018816] [2020-01-16 18:13:43,634 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:43,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:43,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:43,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:43,634 INFO L87 Difference]: Start difference. First operand 1581 states and 7069 transitions. Second operand 11 states. [2020-01-16 18:13:43,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:43,841 INFO L93 Difference]: Finished difference Result 2976 states and 11758 transitions. [2020-01-16 18:13:43,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:43,841 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:43,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:43,848 INFO L225 Difference]: With dead ends: 2976 [2020-01-16 18:13:43,848 INFO L226 Difference]: Without dead ends: 2953 [2020-01-16 18:13:43,849 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:13:43,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2953 states. [2020-01-16 18:13:43,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2953 to 1576. [2020-01-16 18:13:43,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:13:43,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7055 transitions. [2020-01-16 18:13:43,915 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7055 transitions. Word has length 28 [2020-01-16 18:13:43,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:43,916 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7055 transitions. [2020-01-16 18:13:43,916 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:43,916 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7055 transitions. [2020-01-16 18:13:43,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:43,918 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:43,918 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:13:43,918 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 18:13:43,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:43,918 INFO L82 PathProgramCache]: Analyzing trace with hash 707104224, now seen corresponding path program 807 times [2020-01-16 18:13:43,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:43,919 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153079584] [2020-01-16 18:13:43,919 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:43,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:44,434 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 18:13:44,435 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153079584] [2020-01-16 18:13:44,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:44,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:44,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145606240] [2020-01-16 18:13:44,435 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:44,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:44,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:44,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:44,436 INFO L87 Difference]: Start difference. First operand 1576 states and 7055 transitions. Second operand 11 states. [2020-01-16 18:13:44,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:44,631 INFO L93 Difference]: Finished difference Result 2972 states and 11750 transitions. [2020-01-16 18:13:44,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:44,632 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:44,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:44,639 INFO L225 Difference]: With dead ends: 2972 [2020-01-16 18:13:44,639 INFO L226 Difference]: Without dead ends: 2957 [2020-01-16 18:13:44,639 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 18:13:44,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2957 states. [2020-01-16 18:13:44,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2957 to 1581. [2020-01-16 18:13:44,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:13:44,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7064 transitions. [2020-01-16 18:13:44,706 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7064 transitions. Word has length 28 [2020-01-16 18:13:44,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:44,706 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7064 transitions. [2020-01-16 18:13:44,706 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:44,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7064 transitions. [2020-01-16 18:13:44,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:44,709 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:44,709 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:13:44,709 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 18:13:44,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:44,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1925210384, now seen corresponding path program 808 times [2020-01-16 18:13:44,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:44,709 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24357748] [2020-01-16 18:13:44,709 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:44,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:45,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:13:45,227 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24357748] [2020-01-16 18:13:45,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:45,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:45,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493842230] [2020-01-16 18:13:45,228 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:45,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:45,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:45,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:45,228 INFO L87 Difference]: Start difference. First operand 1581 states and 7064 transitions. Second operand 11 states. [2020-01-16 18:13:45,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:45,443 INFO L93 Difference]: Finished difference Result 2974 states and 11749 transitions. [2020-01-16 18:13:45,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:45,443 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:45,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:45,450 INFO L225 Difference]: With dead ends: 2974 [2020-01-16 18:13:45,451 INFO L226 Difference]: Without dead ends: 2952 [2020-01-16 18:13:45,451 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:13:45,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2020-01-16 18:13:45,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 1576. [2020-01-16 18:13:45,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:13:45,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7050 transitions. [2020-01-16 18:13:45,518 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7050 transitions. Word has length 28 [2020-01-16 18:13:45,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:45,518 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7050 transitions. [2020-01-16 18:13:45,518 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:45,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7050 transitions. [2020-01-16 18:13:45,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:45,520 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:45,520 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:13:45,520 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 18:13:45,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:45,520 INFO L82 PathProgramCache]: Analyzing trace with hash -815900000, now seen corresponding path program 809 times [2020-01-16 18:13:45,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:45,521 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472755358] [2020-01-16 18:13:45,521 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:45,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:46,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:13:46,044 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472755358] [2020-01-16 18:13:46,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:46,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:46,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011215688] [2020-01-16 18:13:46,044 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:46,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:46,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:46,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:46,045 INFO L87 Difference]: Start difference. First operand 1576 states and 7050 transitions. Second operand 11 states. [2020-01-16 18:13:46,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:46,264 INFO L93 Difference]: Finished difference Result 2980 states and 11763 transitions. [2020-01-16 18:13:46,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:46,264 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:46,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:46,272 INFO L225 Difference]: With dead ends: 2980 [2020-01-16 18:13:46,272 INFO L226 Difference]: Without dead ends: 2962 [2020-01-16 18:13:46,272 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:13:46,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2962 states. [2020-01-16 18:13:46,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2962 to 1583. [2020-01-16 18:13:46,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:13:46,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7063 transitions. [2020-01-16 18:13:46,339 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7063 transitions. Word has length 28 [2020-01-16 18:13:46,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:46,339 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7063 transitions. [2020-01-16 18:13:46,339 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:46,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7063 transitions. [2020-01-16 18:13:46,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:46,341 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:46,341 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 18:13:46,341 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 18:13:46,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:46,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1387354806, now seen corresponding path program 810 times [2020-01-16 18:13:46,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:46,342 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873298628] [2020-01-16 18:13:46,342 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:46,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:46,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:13:46,871 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873298628] [2020-01-16 18:13:46,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:46,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:46,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497145813] [2020-01-16 18:13:46,871 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:46,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:46,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:46,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:46,872 INFO L87 Difference]: Start difference. First operand 1583 states and 7063 transitions. Second operand 11 states. [2020-01-16 18:13:47,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:47,134 INFO L93 Difference]: Finished difference Result 2979 states and 11754 transitions. [2020-01-16 18:13:47,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:47,135 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:47,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:47,142 INFO L225 Difference]: With dead ends: 2979 [2020-01-16 18:13:47,143 INFO L226 Difference]: Without dead ends: 2950 [2020-01-16 18:13:47,143 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 18:13:47,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2020-01-16 18:13:47,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 1571. [2020-01-16 18:13:47,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:13:47,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7036 transitions. [2020-01-16 18:13:47,211 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7036 transitions. Word has length 28 [2020-01-16 18:13:47,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:47,211 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7036 transitions. [2020-01-16 18:13:47,211 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:47,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7036 transitions. [2020-01-16 18:13:47,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:47,213 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:47,213 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 18:13:47,214 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 18:13:47,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:47,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1542222066, now seen corresponding path program 811 times [2020-01-16 18:13:47,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:47,214 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857871829] [2020-01-16 18:13:47,214 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:47,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:47,767 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 18:13:47,767 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857871829] [2020-01-16 18:13:47,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:47,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:47,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849728794] [2020-01-16 18:13:47,768 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:47,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:47,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:47,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:47,768 INFO L87 Difference]: Start difference. First operand 1571 states and 7036 transitions. Second operand 11 states. [2020-01-16 18:13:47,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:47,944 INFO L93 Difference]: Finished difference Result 3006 states and 11825 transitions. [2020-01-16 18:13:47,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:47,945 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:47,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:47,952 INFO L225 Difference]: With dead ends: 3006 [2020-01-16 18:13:47,953 INFO L226 Difference]: Without dead ends: 2986 [2020-01-16 18:13:47,953 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 18:13:47,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2986 states. [2020-01-16 18:13:48,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2986 to 1591. [2020-01-16 18:13:48,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1591 states. [2020-01-16 18:13:48,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1591 states to 1591 states and 7086 transitions. [2020-01-16 18:13:48,022 INFO L78 Accepts]: Start accepts. Automaton has 1591 states and 7086 transitions. Word has length 28 [2020-01-16 18:13:48,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:48,022 INFO L478 AbstractCegarLoop]: Abstraction has 1591 states and 7086 transitions. [2020-01-16 18:13:48,022 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:48,022 INFO L276 IsEmpty]: Start isEmpty. Operand 1591 states and 7086 transitions. [2020-01-16 18:13:48,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:48,024 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:48,024 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:13:48,024 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 18:13:48,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:48,025 INFO L82 PathProgramCache]: Analyzing trace with hash -797519568, now seen corresponding path program 812 times [2020-01-16 18:13:48,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:48,025 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436746431] [2020-01-16 18:13:48,025 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:48,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:48,599 WARN L192 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:13:48,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:13:48,606 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436746431] [2020-01-16 18:13:48,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:48,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:48,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221453031] [2020-01-16 18:13:48,606 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:48,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:48,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:48,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:48,607 INFO L87 Difference]: Start difference. First operand 1591 states and 7086 transitions. Second operand 11 states. [2020-01-16 18:13:48,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:48,860 INFO L93 Difference]: Finished difference Result 3004 states and 11813 transitions. [2020-01-16 18:13:48,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:48,860 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:48,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:48,868 INFO L225 Difference]: With dead ends: 3004 [2020-01-16 18:13:48,868 INFO L226 Difference]: Without dead ends: 2976 [2020-01-16 18:13:48,868 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 18:13:48,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2976 states. [2020-01-16 18:13:48,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2976 to 1581. [2020-01-16 18:13:48,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:13:48,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7060 transitions. [2020-01-16 18:13:48,936 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7060 transitions. Word has length 28 [2020-01-16 18:13:48,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:48,937 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7060 transitions. [2020-01-16 18:13:48,937 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:48,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7060 transitions. [2020-01-16 18:13:48,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:48,939 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:48,939 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 18:13:48,939 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 18:13:48,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:48,939 INFO L82 PathProgramCache]: Analyzing trace with hash -2077451868, now seen corresponding path program 813 times [2020-01-16 18:13:48,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:48,940 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370551580] [2020-01-16 18:13:48,940 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:48,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:49,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:13:49,473 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370551580] [2020-01-16 18:13:49,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:49,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:49,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936434885] [2020-01-16 18:13:49,474 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:49,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:49,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:49,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:49,474 INFO L87 Difference]: Start difference. First operand 1581 states and 7060 transitions. Second operand 11 states. [2020-01-16 18:13:49,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:49,643 INFO L93 Difference]: Finished difference Result 3003 states and 11810 transitions. [2020-01-16 18:13:49,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:49,643 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:49,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:49,651 INFO L225 Difference]: With dead ends: 3003 [2020-01-16 18:13:49,651 INFO L226 Difference]: Without dead ends: 2983 [2020-01-16 18:13:49,652 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:13:49,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2983 states. [2020-01-16 18:13:49,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2983 to 1589. [2020-01-16 18:13:49,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1589 states. [2020-01-16 18:13:49,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 7074 transitions. [2020-01-16 18:13:49,720 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 7074 transitions. Word has length 28 [2020-01-16 18:13:49,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:49,720 INFO L478 AbstractCegarLoop]: Abstraction has 1589 states and 7074 transitions. [2020-01-16 18:13:49,720 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:49,721 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 7074 transitions. [2020-01-16 18:13:49,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:49,723 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:49,723 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 18:13:49,723 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 18:13:49,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:49,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1904204176, now seen corresponding path program 814 times [2020-01-16 18:13:49,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:49,723 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585677997] [2020-01-16 18:13:49,723 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:49,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:50,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:13:50,252 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585677997] [2020-01-16 18:13:50,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:50,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:50,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923399789] [2020-01-16 18:13:50,253 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:50,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:50,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:50,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:50,253 INFO L87 Difference]: Start difference. First operand 1589 states and 7074 transitions. Second operand 11 states. [2020-01-16 18:13:50,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:50,447 INFO L93 Difference]: Finished difference Result 3000 states and 11797 transitions. [2020-01-16 18:13:50,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:50,447 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:50,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:50,455 INFO L225 Difference]: With dead ends: 3000 [2020-01-16 18:13:50,455 INFO L226 Difference]: Without dead ends: 2975 [2020-01-16 18:13:50,455 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 18:13:50,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2975 states. [2020-01-16 18:13:50,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2975 to 1581. [2020-01-16 18:13:50,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:13:50,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7052 transitions. [2020-01-16 18:13:50,524 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7052 transitions. Word has length 28 [2020-01-16 18:13:50,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:50,524 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7052 transitions. [2020-01-16 18:13:50,524 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:50,524 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7052 transitions. [2020-01-16 18:13:50,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:50,526 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:50,526 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 18:13:50,526 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 18:13:50,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:50,526 INFO L82 PathProgramCache]: Analyzing trace with hash 278191588, now seen corresponding path program 815 times [2020-01-16 18:13:50,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:50,527 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762546363] [2020-01-16 18:13:50,527 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:50,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:51,073 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 18:13:51,073 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762546363] [2020-01-16 18:13:51,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:51,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:51,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589278793] [2020-01-16 18:13:51,074 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:51,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:51,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:51,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:51,074 INFO L87 Difference]: Start difference. First operand 1581 states and 7052 transitions. Second operand 11 states. [2020-01-16 18:13:51,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:51,273 INFO L93 Difference]: Finished difference Result 2998 states and 11794 transitions. [2020-01-16 18:13:51,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:51,273 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:51,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:51,281 INFO L225 Difference]: With dead ends: 2998 [2020-01-16 18:13:51,281 INFO L226 Difference]: Without dead ends: 2980 [2020-01-16 18:13:51,281 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 18:13:51,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2980 states. [2020-01-16 18:13:51,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2980 to 1588. [2020-01-16 18:13:51,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1588 states. [2020-01-16 18:13:51,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 7065 transitions. [2020-01-16 18:13:51,348 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 7065 transitions. Word has length 28 [2020-01-16 18:13:51,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:51,349 INFO L478 AbstractCegarLoop]: Abstraction has 1588 states and 7065 transitions. [2020-01-16 18:13:51,349 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:51,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 7065 transitions. [2020-01-16 18:13:51,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:51,351 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:51,351 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 18:13:51,351 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 18:13:51,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:51,351 INFO L82 PathProgramCache]: Analyzing trace with hash -293263218, now seen corresponding path program 816 times [2020-01-16 18:13:51,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:51,352 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728794993] [2020-01-16 18:13:51,352 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:51,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:51,903 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 18:13:51,903 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728794993] [2020-01-16 18:13:51,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:51,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:51,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961839012] [2020-01-16 18:13:51,903 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:51,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:51,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:51,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:51,904 INFO L87 Difference]: Start difference. First operand 1588 states and 7065 transitions. Second operand 11 states. [2020-01-16 18:13:52,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:52,177 INFO L93 Difference]: Finished difference Result 2997 states and 11785 transitions. [2020-01-16 18:13:52,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:52,177 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:52,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:52,185 INFO L225 Difference]: With dead ends: 2997 [2020-01-16 18:13:52,185 INFO L226 Difference]: Without dead ends: 2955 [2020-01-16 18:13:52,185 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 18:13:52,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2955 states. [2020-01-16 18:13:52,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2955 to 1563. [2020-01-16 18:13:52,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 18:13:52,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7013 transitions. [2020-01-16 18:13:52,251 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7013 transitions. Word has length 28 [2020-01-16 18:13:52,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:52,252 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7013 transitions. [2020-01-16 18:13:52,252 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:52,252 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7013 transitions. [2020-01-16 18:13:52,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:52,254 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:52,254 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 18:13:52,254 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 18:13:52,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:52,254 INFO L82 PathProgramCache]: Analyzing trace with hash -969642016, now seen corresponding path program 817 times [2020-01-16 18:13:52,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:52,255 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976106854] [2020-01-16 18:13:52,255 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:52,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:52,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:13:52,792 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976106854] [2020-01-16 18:13:52,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:52,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:52,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234726316] [2020-01-16 18:13:52,793 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:52,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:52,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:52,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:52,793 INFO L87 Difference]: Start difference. First operand 1563 states and 7013 transitions. Second operand 11 states. [2020-01-16 18:13:52,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:52,956 INFO L93 Difference]: Finished difference Result 3001 states and 11833 transitions. [2020-01-16 18:13:52,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:52,956 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:52,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:52,964 INFO L225 Difference]: With dead ends: 3001 [2020-01-16 18:13:52,964 INFO L226 Difference]: Without dead ends: 2985 [2020-01-16 18:13:52,964 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 18:13:53,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2985 states. [2020-01-16 18:13:53,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2985 to 1588. [2020-01-16 18:13:53,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1588 states. [2020-01-16 18:13:53,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 7093 transitions. [2020-01-16 18:13:53,031 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 7093 transitions. Word has length 28 [2020-01-16 18:13:53,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:53,031 INFO L478 AbstractCegarLoop]: Abstraction has 1588 states and 7093 transitions. [2020-01-16 18:13:53,032 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:53,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 7093 transitions. [2020-01-16 18:13:53,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:53,034 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:53,034 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 18:13:53,034 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 18:13:53,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:53,034 INFO L82 PathProgramCache]: Analyzing trace with hash -224939518, now seen corresponding path program 818 times [2020-01-16 18:13:53,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:53,034 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716094251] [2020-01-16 18:13:53,034 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:53,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:53,585 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 18:13:53,586 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716094251] [2020-01-16 18:13:53,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:53,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:53,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016020706] [2020-01-16 18:13:53,586 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:53,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:53,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:53,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:53,586 INFO L87 Difference]: Start difference. First operand 1588 states and 7093 transitions. Second operand 11 states. [2020-01-16 18:13:53,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:53,728 INFO L93 Difference]: Finished difference Result 3005 states and 11834 transitions. [2020-01-16 18:13:53,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:53,728 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:53,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:53,735 INFO L225 Difference]: With dead ends: 3005 [2020-01-16 18:13:53,735 INFO L226 Difference]: Without dead ends: 2978 [2020-01-16 18:13:53,735 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 18:13:53,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2978 states. [2020-01-16 18:13:53,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2978 to 1581. [2020-01-16 18:13:53,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:13:53,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7073 transitions. [2020-01-16 18:13:53,804 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7073 transitions. Word has length 28 [2020-01-16 18:13:53,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:53,804 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7073 transitions. [2020-01-16 18:13:53,804 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:53,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7073 transitions. [2020-01-16 18:13:53,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:53,807 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:53,807 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 18:13:53,807 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 18:13:53,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:53,807 INFO L82 PathProgramCache]: Analyzing trace with hash 641298942, now seen corresponding path program 819 times [2020-01-16 18:13:53,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:53,807 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706952962] [2020-01-16 18:13:53,807 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:53,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:54,347 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 18:13:54,348 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706952962] [2020-01-16 18:13:54,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:54,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:54,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657536065] [2020-01-16 18:13:54,348 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:54,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:54,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:54,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:54,349 INFO L87 Difference]: Start difference. First operand 1581 states and 7073 transitions. Second operand 11 states. [2020-01-16 18:13:54,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:54,509 INFO L93 Difference]: Finished difference Result 2998 states and 11821 transitions. [2020-01-16 18:13:54,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:54,510 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:54,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:54,517 INFO L225 Difference]: With dead ends: 2998 [2020-01-16 18:13:54,518 INFO L226 Difference]: Without dead ends: 2982 [2020-01-16 18:13:54,518 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 18:13:54,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2982 states. [2020-01-16 18:13:54,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2982 to 1587. [2020-01-16 18:13:54,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1587 states. [2020-01-16 18:13:54,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 7084 transitions. [2020-01-16 18:13:54,585 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 7084 transitions. Word has length 28 [2020-01-16 18:13:54,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:54,585 INFO L478 AbstractCegarLoop]: Abstraction has 1587 states and 7084 transitions. [2020-01-16 18:13:54,585 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:54,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 7084 transitions. [2020-01-16 18:13:54,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:54,621 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:54,621 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:13:54,621 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 18:13:54,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:54,621 INFO L82 PathProgramCache]: Analyzing trace with hash 2130703938, now seen corresponding path program 820 times [2020-01-16 18:13:54,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:54,621 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593291351] [2020-01-16 18:13:54,622 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:54,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:55,153 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 18:13:55,153 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593291351] [2020-01-16 18:13:55,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:55,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:55,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812497234] [2020-01-16 18:13:55,154 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:55,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:55,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:55,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:55,154 INFO L87 Difference]: Start difference. First operand 1587 states and 7084 transitions. Second operand 11 states. [2020-01-16 18:13:55,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:55,354 INFO L93 Difference]: Finished difference Result 3000 states and 11819 transitions. [2020-01-16 18:13:55,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:55,354 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:55,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:55,362 INFO L225 Difference]: With dead ends: 3000 [2020-01-16 18:13:55,362 INFO L226 Difference]: Without dead ends: 2976 [2020-01-16 18:13:55,362 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:13:55,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2976 states. [2020-01-16 18:13:55,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2976 to 1581. [2020-01-16 18:13:55,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-01-16 18:13:55,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 7067 transitions. [2020-01-16 18:13:55,430 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 7067 transitions. Word has length 28 [2020-01-16 18:13:55,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:55,431 INFO L478 AbstractCegarLoop]: Abstraction has 1581 states and 7067 transitions. [2020-01-16 18:13:55,431 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:55,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 7067 transitions. [2020-01-16 18:13:55,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:55,433 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:55,433 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 18:13:55,433 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 18:13:55,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:55,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1298024898, now seen corresponding path program 821 times [2020-01-16 18:13:55,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:55,434 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594138731] [2020-01-16 18:13:55,434 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:55,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:55,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:13:55,981 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594138731] [2020-01-16 18:13:55,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:55,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:55,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698124370] [2020-01-16 18:13:55,981 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:55,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:55,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:55,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:55,982 INFO L87 Difference]: Start difference. First operand 1581 states and 7067 transitions. Second operand 11 states. [2020-01-16 18:13:56,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:56,116 INFO L93 Difference]: Finished difference Result 3010 states and 11838 transitions. [2020-01-16 18:13:56,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:56,116 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:56,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:56,122 INFO L225 Difference]: With dead ends: 3010 [2020-01-16 18:13:56,123 INFO L226 Difference]: Without dead ends: 2990 [2020-01-16 18:13:56,123 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 18:13:56,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2990 states. [2020-01-16 18:13:56,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2990 to 1591. [2020-01-16 18:13:56,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1591 states. [2020-01-16 18:13:56,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1591 states to 1591 states and 7084 transitions. [2020-01-16 18:13:56,190 INFO L78 Accepts]: Start accepts. Automaton has 1591 states and 7084 transitions. Word has length 28 [2020-01-16 18:13:56,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:56,190 INFO L478 AbstractCegarLoop]: Abstraction has 1591 states and 7084 transitions. [2020-01-16 18:13:56,190 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:56,190 INFO L276 IsEmpty]: Start isEmpty. Operand 1591 states and 7084 transitions. [2020-01-16 18:13:56,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:56,192 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:56,192 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 18:13:56,193 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 18:13:56,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:56,193 INFO L82 PathProgramCache]: Analyzing trace with hash -553322400, now seen corresponding path program 822 times [2020-01-16 18:13:56,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:56,193 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520835592] [2020-01-16 18:13:56,193 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:56,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:56,744 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 18:13:56,745 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520835592] [2020-01-16 18:13:56,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:56,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:56,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150971921] [2020-01-16 18:13:56,745 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:56,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:56,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:56,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:56,746 INFO L87 Difference]: Start difference. First operand 1591 states and 7084 transitions. Second operand 11 states. [2020-01-16 18:13:56,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:56,916 INFO L93 Difference]: Finished difference Result 3008 states and 11826 transitions. [2020-01-16 18:13:56,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:56,916 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:56,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:56,923 INFO L225 Difference]: With dead ends: 3008 [2020-01-16 18:13:56,923 INFO L226 Difference]: Without dead ends: 2972 [2020-01-16 18:13:56,923 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 18:13:56,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2972 states. [2020-01-16 18:13:56,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2972 to 1573. [2020-01-16 18:13:56,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:13:56,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7044 transitions. [2020-01-16 18:13:56,990 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7044 transitions. Word has length 28 [2020-01-16 18:13:56,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:56,990 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7044 transitions. [2020-01-16 18:13:56,990 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:56,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7044 transitions. [2020-01-16 18:13:56,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:56,992 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:56,992 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 18:13:56,992 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 18:13:56,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:56,992 INFO L82 PathProgramCache]: Analyzing trace with hash -381896694, now seen corresponding path program 823 times [2020-01-16 18:13:56,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:56,993 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407494054] [2020-01-16 18:13:56,993 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:56,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:57,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:13:57,524 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407494054] [2020-01-16 18:13:57,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:57,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:57,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580987740] [2020-01-16 18:13:57,524 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:57,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:57,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:57,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:57,525 INFO L87 Difference]: Start difference. First operand 1573 states and 7044 transitions. Second operand 11 states. [2020-01-16 18:13:57,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:57,705 INFO L93 Difference]: Finished difference Result 2997 states and 11817 transitions. [2020-01-16 18:13:57,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:57,705 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:57,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:57,712 INFO L225 Difference]: With dead ends: 2997 [2020-01-16 18:13:57,712 INFO L226 Difference]: Without dead ends: 2981 [2020-01-16 18:13:57,712 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:13:57,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2981 states. [2020-01-16 18:13:57,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2981 to 1587. [2020-01-16 18:13:57,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1587 states. [2020-01-16 18:13:57,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 7083 transitions. [2020-01-16 18:13:57,779 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 7083 transitions. Word has length 28 [2020-01-16 18:13:57,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:57,779 INFO L478 AbstractCegarLoop]: Abstraction has 1587 states and 7083 transitions. [2020-01-16 18:13:57,779 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:57,779 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 7083 transitions. [2020-01-16 18:13:57,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:57,781 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:57,781 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 18:13:57,782 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 18:13:57,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:57,782 INFO L82 PathProgramCache]: Analyzing trace with hash 362805804, now seen corresponding path program 824 times [2020-01-16 18:13:57,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:57,782 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680483728] [2020-01-16 18:13:57,782 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:57,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:58,317 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 18:13:58,317 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680483728] [2020-01-16 18:13:58,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:58,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:58,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546582714] [2020-01-16 18:13:58,317 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:58,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:58,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:58,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:58,318 INFO L87 Difference]: Start difference. First operand 1587 states and 7083 transitions. Second operand 11 states. [2020-01-16 18:13:58,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:58,447 INFO L93 Difference]: Finished difference Result 3001 states and 11818 transitions. [2020-01-16 18:13:58,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:58,448 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:58,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:58,455 INFO L225 Difference]: With dead ends: 3001 [2020-01-16 18:13:58,455 INFO L226 Difference]: Without dead ends: 2974 [2020-01-16 18:13:58,456 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 18:13:58,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2974 states. [2020-01-16 18:13:58,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2974 to 1580. [2020-01-16 18:13:58,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:13:58,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7063 transitions. [2020-01-16 18:13:58,524 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7063 transitions. Word has length 28 [2020-01-16 18:13:58,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:58,525 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7063 transitions. [2020-01-16 18:13:58,525 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:58,525 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7063 transitions. [2020-01-16 18:13:58,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:58,527 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:58,527 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:13:58,527 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 18:13:58,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:58,527 INFO L82 PathProgramCache]: Analyzing trace with hash 693814462, now seen corresponding path program 825 times [2020-01-16 18:13:58,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:58,528 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131397494] [2020-01-16 18:13:58,528 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:58,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:59,066 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 18:13:59,066 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131397494] [2020-01-16 18:13:59,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:59,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:59,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600560240] [2020-01-16 18:13:59,067 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:59,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:59,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:59,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:59,067 INFO L87 Difference]: Start difference. First operand 1580 states and 7063 transitions. Second operand 11 states. [2020-01-16 18:13:59,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:13:59,235 INFO L93 Difference]: Finished difference Result 2993 states and 11803 transitions. [2020-01-16 18:13:59,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:13:59,236 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:13:59,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:13:59,243 INFO L225 Difference]: With dead ends: 2993 [2020-01-16 18:13:59,243 INFO L226 Difference]: Without dead ends: 2977 [2020-01-16 18:13:59,243 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 18:13:59,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2977 states. [2020-01-16 18:13:59,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2977 to 1586. [2020-01-16 18:13:59,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1586 states. [2020-01-16 18:13:59,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 7074 transitions. [2020-01-16 18:13:59,312 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 7074 transitions. Word has length 28 [2020-01-16 18:13:59,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:13:59,312 INFO L478 AbstractCegarLoop]: Abstraction has 1586 states and 7074 transitions. [2020-01-16 18:13:59,312 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:13:59,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 7074 transitions. [2020-01-16 18:13:59,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:13:59,315 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:13:59,315 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 18:13:59,315 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 18:13:59,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:13:59,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1611764652, now seen corresponding path program 826 times [2020-01-16 18:13:59,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:13:59,315 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760613238] [2020-01-16 18:13:59,315 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:13:59,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:13:59,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:13:59,857 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760613238] [2020-01-16 18:13:59,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:13:59,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:13:59,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707659956] [2020-01-16 18:13:59,857 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:13:59,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:13:59,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:13:59,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:13:59,857 INFO L87 Difference]: Start difference. First operand 1586 states and 7074 transitions. Second operand 11 states. [2020-01-16 18:14:00,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:00,026 INFO L93 Difference]: Finished difference Result 2994 states and 11799 transitions. [2020-01-16 18:14:00,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:00,026 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:00,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:00,034 INFO L225 Difference]: With dead ends: 2994 [2020-01-16 18:14:00,034 INFO L226 Difference]: Without dead ends: 2971 [2020-01-16 18:14:00,034 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 18:14:00,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2971 states. [2020-01-16 18:14:00,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2971 to 1580. [2020-01-16 18:14:00,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:14:00,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7057 transitions. [2020-01-16 18:14:00,101 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7057 transitions. Word has length 28 [2020-01-16 18:14:00,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:00,101 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7057 transitions. [2020-01-16 18:14:00,101 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:00,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7057 transitions. [2020-01-16 18:14:00,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:00,103 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:00,103 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 18:14:00,103 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 18:14:00,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:00,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1245509378, now seen corresponding path program 827 times [2020-01-16 18:14:00,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:00,104 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002157077] [2020-01-16 18:14:00,104 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:00,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:00,648 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:14:00,655 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 18:14:00,656 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002157077] [2020-01-16 18:14:00,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:00,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:00,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492780208] [2020-01-16 18:14:00,656 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:00,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:00,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:00,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:00,656 INFO L87 Difference]: Start difference. First operand 1580 states and 7057 transitions. Second operand 11 states. [2020-01-16 18:14:00,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:00,835 INFO L93 Difference]: Finished difference Result 3003 states and 11816 transitions. [2020-01-16 18:14:00,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:00,835 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:00,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:00,842 INFO L225 Difference]: With dead ends: 3003 [2020-01-16 18:14:00,842 INFO L226 Difference]: Without dead ends: 2983 [2020-01-16 18:14:00,842 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:14:00,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2983 states. [2020-01-16 18:14:00,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2983 to 1588. [2020-01-16 18:14:00,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1588 states. [2020-01-16 18:14:00,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 7071 transitions. [2020-01-16 18:14:00,911 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 7071 transitions. Word has length 28 [2020-01-16 18:14:00,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:00,911 INFO L478 AbstractCegarLoop]: Abstraction has 1588 states and 7071 transitions. [2020-01-16 18:14:00,911 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:00,912 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 7071 transitions. [2020-01-16 18:14:00,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:00,914 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:00,914 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 18:14:00,914 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 18:14:00,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:00,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1072261686, now seen corresponding path program 828 times [2020-01-16 18:14:00,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:00,914 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187502337] [2020-01-16 18:14:00,915 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:00,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:01,452 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 18:14:01,452 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187502337] [2020-01-16 18:14:01,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:01,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:01,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098370996] [2020-01-16 18:14:01,452 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:01,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:01,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:01,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:01,453 INFO L87 Difference]: Start difference. First operand 1588 states and 7071 transitions. Second operand 11 states. [2020-01-16 18:14:01,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:01,660 INFO L93 Difference]: Finished difference Result 3000 states and 11803 transitions. [2020-01-16 18:14:01,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:01,660 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:01,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:01,667 INFO L225 Difference]: With dead ends: 3000 [2020-01-16 18:14:01,667 INFO L226 Difference]: Without dead ends: 2968 [2020-01-16 18:14:01,667 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 18:14:01,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2968 states. [2020-01-16 18:14:01,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2968 to 1573. [2020-01-16 18:14:01,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:14:01,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7037 transitions. [2020-01-16 18:14:01,736 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7037 transitions. Word has length 28 [2020-01-16 18:14:01,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:01,736 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7037 transitions. [2020-01-16 18:14:01,736 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:01,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7037 transitions. [2020-01-16 18:14:01,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:01,738 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:01,738 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 18:14:01,738 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 18:14:01,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:01,738 INFO L82 PathProgramCache]: Analyzing trace with hash -371393590, now seen corresponding path program 829 times [2020-01-16 18:14:01,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:01,739 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868099487] [2020-01-16 18:14:01,739 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:01,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:02,279 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-01-16 18:14:02,285 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 18:14:02,285 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868099487] [2020-01-16 18:14:02,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:02,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:02,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148439670] [2020-01-16 18:14:02,286 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:02,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:02,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:02,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:02,286 INFO L87 Difference]: Start difference. First operand 1573 states and 7037 transitions. Second operand 11 states. [2020-01-16 18:14:02,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:02,514 INFO L93 Difference]: Finished difference Result 2989 states and 11795 transitions. [2020-01-16 18:14:02,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:02,514 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:02,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:02,521 INFO L225 Difference]: With dead ends: 2989 [2020-01-16 18:14:02,521 INFO L226 Difference]: Without dead ends: 2973 [2020-01-16 18:14:02,522 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 18:14:02,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2973 states. [2020-01-16 18:14:02,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2973 to 1585. [2020-01-16 18:14:02,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 18:14:02,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7071 transitions. [2020-01-16 18:14:02,590 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7071 transitions. Word has length 28 [2020-01-16 18:14:02,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:02,591 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7071 transitions. [2020-01-16 18:14:02,591 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:02,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7071 transitions. [2020-01-16 18:14:02,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:02,593 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:02,593 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:14:02,593 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 18:14:02,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:02,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1118011406, now seen corresponding path program 830 times [2020-01-16 18:14:02,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:02,594 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530104422] [2020-01-16 18:14:02,594 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:02,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:03,125 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 18:14:03,125 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530104422] [2020-01-16 18:14:03,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:03,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:03,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090811821] [2020-01-16 18:14:03,125 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:03,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:03,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:03,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:03,126 INFO L87 Difference]: Start difference. First operand 1585 states and 7071 transitions. Second operand 11 states. [2020-01-16 18:14:03,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:03,304 INFO L93 Difference]: Finished difference Result 2991 states and 11793 transitions. [2020-01-16 18:14:03,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:03,304 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:03,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:03,312 INFO L225 Difference]: With dead ends: 2991 [2020-01-16 18:14:03,312 INFO L226 Difference]: Without dead ends: 2967 [2020-01-16 18:14:03,312 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 18:14:03,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2967 states. [2020-01-16 18:14:03,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2967 to 1579. [2020-01-16 18:14:03,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:14:03,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7054 transitions. [2020-01-16 18:14:03,380 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7054 transitions. Word has length 28 [2020-01-16 18:14:03,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:03,381 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7054 transitions. [2020-01-16 18:14:03,381 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:03,381 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7054 transitions. [2020-01-16 18:14:03,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:03,383 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:03,383 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 18:14:03,383 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 18:14:03,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:03,383 INFO L82 PathProgramCache]: Analyzing trace with hash -906623392, now seen corresponding path program 831 times [2020-01-16 18:14:03,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:03,383 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298474955] [2020-01-16 18:14:03,384 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:03,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:03,924 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 18:14:03,925 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298474955] [2020-01-16 18:14:03,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:03,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:03,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506563253] [2020-01-16 18:14:03,925 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:03,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:03,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:03,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:03,926 INFO L87 Difference]: Start difference. First operand 1579 states and 7054 transitions. Second operand 11 states. [2020-01-16 18:14:04,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:04,107 INFO L93 Difference]: Finished difference Result 2988 states and 11787 transitions. [2020-01-16 18:14:04,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:04,107 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:04,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:04,114 INFO L225 Difference]: With dead ends: 2988 [2020-01-16 18:14:04,114 INFO L226 Difference]: Without dead ends: 2972 [2020-01-16 18:14:04,114 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:14:04,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2972 states. [2020-01-16 18:14:04,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2972 to 1585. [2020-01-16 18:14:04,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2020-01-16 18:14:04,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 7065 transitions. [2020-01-16 18:14:04,181 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 7065 transitions. Word has length 28 [2020-01-16 18:14:04,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:04,181 INFO L478 AbstractCegarLoop]: Abstraction has 1585 states and 7065 transitions. [2020-01-16 18:14:04,181 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:04,181 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 7065 transitions. [2020-01-16 18:14:04,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:04,184 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:04,184 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:14:04,184 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 18:14:04,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:04,184 INFO L82 PathProgramCache]: Analyzing trace with hash 11326798, now seen corresponding path program 832 times [2020-01-16 18:14:04,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:04,184 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269636014] [2020-01-16 18:14:04,184 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:04,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:04,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:14:04,729 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269636014] [2020-01-16 18:14:04,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:04,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:04,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112304834] [2020-01-16 18:14:04,729 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:04,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:04,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:04,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:04,729 INFO L87 Difference]: Start difference. First operand 1585 states and 7065 transitions. Second operand 11 states. [2020-01-16 18:14:04,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:04,901 INFO L93 Difference]: Finished difference Result 2989 states and 11783 transitions. [2020-01-16 18:14:04,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:04,901 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:04,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:04,908 INFO L225 Difference]: With dead ends: 2989 [2020-01-16 18:14:04,908 INFO L226 Difference]: Without dead ends: 2966 [2020-01-16 18:14:04,908 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 18:14:04,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2966 states. [2020-01-16 18:14:04,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2966 to 1579. [2020-01-16 18:14:04,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:14:04,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7048 transitions. [2020-01-16 18:14:04,974 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7048 transitions. Word has length 28 [2020-01-16 18:14:04,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:04,975 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7048 transitions. [2020-01-16 18:14:04,975 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:04,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7048 transitions. [2020-01-16 18:14:04,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:04,977 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:04,977 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 18:14:04,977 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 18:14:04,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:04,977 INFO L82 PathProgramCache]: Analyzing trace with hash -490303776, now seen corresponding path program 833 times [2020-01-16 18:14:04,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:04,977 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624390841] [2020-01-16 18:14:04,977 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:04,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:05,517 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-01-16 18:14:05,525 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 18:14:05,525 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624390841] [2020-01-16 18:14:05,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:05,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:05,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777800437] [2020-01-16 18:14:05,525 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:05,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:05,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:05,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:05,526 INFO L87 Difference]: Start difference. First operand 1579 states and 7048 transitions. Second operand 11 states. [2020-01-16 18:14:05,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:05,694 INFO L93 Difference]: Finished difference Result 2993 states and 11792 transitions. [2020-01-16 18:14:05,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:05,694 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:05,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:05,702 INFO L225 Difference]: With dead ends: 2993 [2020-01-16 18:14:05,702 INFO L226 Difference]: Without dead ends: 2975 [2020-01-16 18:14:05,702 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 18:14:05,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2975 states. [2020-01-16 18:14:05,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2975 to 1586. [2020-01-16 18:14:05,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1586 states. [2020-01-16 18:14:05,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 7061 transitions. [2020-01-16 18:14:05,771 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 7061 transitions. Word has length 28 [2020-01-16 18:14:05,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:05,771 INFO L478 AbstractCegarLoop]: Abstraction has 1586 states and 7061 transitions. [2020-01-16 18:14:05,771 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:05,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 7061 transitions. [2020-01-16 18:14:05,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:05,774 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:05,774 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:14:05,774 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 18:14:05,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:05,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1061758582, now seen corresponding path program 834 times [2020-01-16 18:14:05,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:05,774 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236132908] [2020-01-16 18:14:05,774 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:05,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:06,317 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-01-16 18:14:06,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:14:06,325 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236132908] [2020-01-16 18:14:06,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:06,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:06,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105446411] [2020-01-16 18:14:06,325 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:06,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:06,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:06,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:06,326 INFO L87 Difference]: Start difference. First operand 1586 states and 7061 transitions. Second operand 11 states. [2020-01-16 18:14:06,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:06,501 INFO L93 Difference]: Finished difference Result 2992 states and 11783 transitions. [2020-01-16 18:14:06,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:06,501 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:06,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:06,508 INFO L225 Difference]: With dead ends: 2992 [2020-01-16 18:14:06,508 INFO L226 Difference]: Without dead ends: 2962 [2020-01-16 18:14:06,508 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 18:14:06,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2962 states. [2020-01-16 18:14:06,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2962 to 1573. [2020-01-16 18:14:06,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:14:06,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7031 transitions. [2020-01-16 18:14:06,576 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7031 transitions. Word has length 28 [2020-01-16 18:14:06,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:06,576 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7031 transitions. [2020-01-16 18:14:06,576 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:06,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7031 transitions. [2020-01-16 18:14:06,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:06,578 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:06,578 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 18:14:06,579 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 18:14:06,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:06,579 INFO L82 PathProgramCache]: Analyzing trace with hash 383812012, now seen corresponding path program 835 times [2020-01-16 18:14:06,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:06,579 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602997009] [2020-01-16 18:14:06,579 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:06,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:07,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:14:07,177 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602997009] [2020-01-16 18:14:07,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:07,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:07,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450517401] [2020-01-16 18:14:07,177 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:07,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:07,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:07,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:07,177 INFO L87 Difference]: Start difference. First operand 1573 states and 7031 transitions. Second operand 11 states. [2020-01-16 18:14:07,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:07,339 INFO L93 Difference]: Finished difference Result 3015 states and 11843 transitions. [2020-01-16 18:14:07,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:07,340 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:07,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:07,347 INFO L225 Difference]: With dead ends: 3015 [2020-01-16 18:14:07,347 INFO L226 Difference]: Without dead ends: 2995 [2020-01-16 18:14:07,347 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 18:14:07,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2995 states. [2020-01-16 18:14:07,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2995 to 1593. [2020-01-16 18:14:07,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1593 states. [2020-01-16 18:14:07,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1593 states to 1593 states and 7081 transitions. [2020-01-16 18:14:07,416 INFO L78 Accepts]: Start accepts. Automaton has 1593 states and 7081 transitions. Word has length 28 [2020-01-16 18:14:07,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:07,416 INFO L478 AbstractCegarLoop]: Abstraction has 1593 states and 7081 transitions. [2020-01-16 18:14:07,416 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:07,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1593 states and 7081 transitions. [2020-01-16 18:14:07,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:07,418 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:07,418 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:14:07,418 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 18:14:07,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:07,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1128514510, now seen corresponding path program 836 times [2020-01-16 18:14:07,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:07,419 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914994752] [2020-01-16 18:14:07,419 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:07,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:07,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:14:07,978 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914994752] [2020-01-16 18:14:07,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:07,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:07,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085476163] [2020-01-16 18:14:07,978 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:07,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:07,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:07,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:07,979 INFO L87 Difference]: Start difference. First operand 1593 states and 7081 transitions. Second operand 11 states. [2020-01-16 18:14:08,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:08,152 INFO L93 Difference]: Finished difference Result 3013 states and 11831 transitions. [2020-01-16 18:14:08,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:08,152 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:08,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:08,159 INFO L225 Difference]: With dead ends: 3013 [2020-01-16 18:14:08,159 INFO L226 Difference]: Without dead ends: 2985 [2020-01-16 18:14:08,159 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 18:14:08,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2985 states. [2020-01-16 18:14:08,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2985 to 1583. [2020-01-16 18:14:08,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:14:08,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7055 transitions. [2020-01-16 18:14:08,226 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7055 transitions. Word has length 28 [2020-01-16 18:14:08,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:08,226 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7055 transitions. [2020-01-16 18:14:08,226 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:08,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7055 transitions. [2020-01-16 18:14:08,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:08,228 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:08,228 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:14:08,228 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 18:14:08,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:08,228 INFO L82 PathProgramCache]: Analyzing trace with hash -151417790, now seen corresponding path program 837 times [2020-01-16 18:14:08,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:08,229 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517328268] [2020-01-16 18:14:08,229 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:08,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:08,778 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 18:14:08,779 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517328268] [2020-01-16 18:14:08,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:08,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:08,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129178214] [2020-01-16 18:14:08,779 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:08,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:08,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:08,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:08,780 INFO L87 Difference]: Start difference. First operand 1583 states and 7055 transitions. Second operand 11 states. [2020-01-16 18:14:08,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:08,915 INFO L93 Difference]: Finished difference Result 3012 states and 11828 transitions. [2020-01-16 18:14:08,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:08,916 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:08,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:08,923 INFO L225 Difference]: With dead ends: 3012 [2020-01-16 18:14:08,923 INFO L226 Difference]: Without dead ends: 2992 [2020-01-16 18:14:08,923 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 18:14:08,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2992 states. [2020-01-16 18:14:08,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2992 to 1591. [2020-01-16 18:14:08,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1591 states. [2020-01-16 18:14:08,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1591 states to 1591 states and 7069 transitions. [2020-01-16 18:14:08,990 INFO L78 Accepts]: Start accepts. Automaton has 1591 states and 7069 transitions. Word has length 28 [2020-01-16 18:14:08,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:08,990 INFO L478 AbstractCegarLoop]: Abstraction has 1591 states and 7069 transitions. [2020-01-16 18:14:08,990 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:08,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1591 states and 7069 transitions. [2020-01-16 18:14:08,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:08,992 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:08,992 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 18:14:08,993 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 18:14:08,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:08,993 INFO L82 PathProgramCache]: Analyzing trace with hash 21829902, now seen corresponding path program 838 times [2020-01-16 18:14:08,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:08,993 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579483025] [2020-01-16 18:14:08,993 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:08,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:09,534 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 18:14:09,534 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579483025] [2020-01-16 18:14:09,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:09,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:09,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265019025] [2020-01-16 18:14:09,535 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:09,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:09,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:09,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:09,535 INFO L87 Difference]: Start difference. First operand 1591 states and 7069 transitions. Second operand 11 states. [2020-01-16 18:14:09,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:09,712 INFO L93 Difference]: Finished difference Result 3009 states and 11815 transitions. [2020-01-16 18:14:09,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:09,712 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:09,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:09,720 INFO L225 Difference]: With dead ends: 3009 [2020-01-16 18:14:09,720 INFO L226 Difference]: Without dead ends: 2984 [2020-01-16 18:14:09,720 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 18:14:09,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2984 states. [2020-01-16 18:14:09,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2984 to 1583. [2020-01-16 18:14:09,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:14:09,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7047 transitions. [2020-01-16 18:14:09,789 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7047 transitions. Word has length 28 [2020-01-16 18:14:09,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:09,789 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7047 transitions. [2020-01-16 18:14:09,789 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:09,789 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7047 transitions. [2020-01-16 18:14:09,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:09,791 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:09,791 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 18:14:09,791 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 18:14:09,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:09,791 INFO L82 PathProgramCache]: Analyzing trace with hash -2090741630, now seen corresponding path program 839 times [2020-01-16 18:14:09,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:09,792 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503648239] [2020-01-16 18:14:09,792 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:09,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:10,336 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 18:14:10,337 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503648239] [2020-01-16 18:14:10,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:10,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:10,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710640610] [2020-01-16 18:14:10,337 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:10,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:10,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:10,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:10,337 INFO L87 Difference]: Start difference. First operand 1583 states and 7047 transitions. Second operand 11 states. [2020-01-16 18:14:10,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:10,534 INFO L93 Difference]: Finished difference Result 3007 states and 11812 transitions. [2020-01-16 18:14:10,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:10,535 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:10,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:10,542 INFO L225 Difference]: With dead ends: 3007 [2020-01-16 18:14:10,543 INFO L226 Difference]: Without dead ends: 2989 [2020-01-16 18:14:10,543 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 18:14:10,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2020-01-16 18:14:10,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 1590. [2020-01-16 18:14:10,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1590 states. [2020-01-16 18:14:10,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 7060 transitions. [2020-01-16 18:14:10,612 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 7060 transitions. Word has length 28 [2020-01-16 18:14:10,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:10,612 INFO L478 AbstractCegarLoop]: Abstraction has 1590 states and 7060 transitions. [2020-01-16 18:14:10,612 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:10,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 7060 transitions. [2020-01-16 18:14:10,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:10,614 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:10,614 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 18:14:10,615 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 18:14:10,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:10,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1632770860, now seen corresponding path program 840 times [2020-01-16 18:14:10,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:10,615 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621953630] [2020-01-16 18:14:10,615 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:10,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:11,149 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 18:14:11,150 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621953630] [2020-01-16 18:14:11,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:11,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:11,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511170954] [2020-01-16 18:14:11,150 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:11,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:11,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:11,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:11,150 INFO L87 Difference]: Start difference. First operand 1590 states and 7060 transitions. Second operand 11 states. [2020-01-16 18:14:11,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:11,323 INFO L93 Difference]: Finished difference Result 3006 states and 11803 transitions. [2020-01-16 18:14:11,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:11,323 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:11,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:11,331 INFO L225 Difference]: With dead ends: 3006 [2020-01-16 18:14:11,331 INFO L226 Difference]: Without dead ends: 2952 [2020-01-16 18:14:11,331 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:14:11,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2020-01-16 18:14:11,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 1553. [2020-01-16 18:14:11,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-01-16 18:14:11,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 6987 transitions. [2020-01-16 18:14:11,397 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 6987 transitions. Word has length 28 [2020-01-16 18:14:11,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:11,397 INFO L478 AbstractCegarLoop]: Abstraction has 1553 states and 6987 transitions. [2020-01-16 18:14:11,397 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:11,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 6987 transitions. [2020-01-16 18:14:11,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:11,399 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:11,400 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:14:11,400 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 18:14:11,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:11,400 INFO L82 PathProgramCache]: Analyzing trace with hash -471497986, now seen corresponding path program 841 times [2020-01-16 18:14:11,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:11,400 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972785030] [2020-01-16 18:14:11,400 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:11,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:11,929 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 29 [2020-01-16 18:14:11,936 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 18:14:11,936 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972785030] [2020-01-16 18:14:11,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:11,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:11,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690234614] [2020-01-16 18:14:11,936 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:11,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:11,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:11,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:11,937 INFO L87 Difference]: Start difference. First operand 1553 states and 6987 transitions. Second operand 11 states. [2020-01-16 18:14:12,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:12,114 INFO L93 Difference]: Finished difference Result 2917 states and 11586 transitions. [2020-01-16 18:14:12,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:12,114 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:12,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:12,121 INFO L225 Difference]: With dead ends: 2917 [2020-01-16 18:14:12,122 INFO L226 Difference]: Without dead ends: 2902 [2020-01-16 18:14:12,122 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 18:14:12,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2902 states. [2020-01-16 18:14:12,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2902 to 1576. [2020-01-16 18:14:12,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:14:12,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7075 transitions. [2020-01-16 18:14:12,188 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7075 transitions. Word has length 28 [2020-01-16 18:14:12,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:12,189 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7075 transitions. [2020-01-16 18:14:12,189 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:12,189 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7075 transitions. [2020-01-16 18:14:12,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:12,191 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:12,191 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:14:12,191 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 18:14:12,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:12,191 INFO L82 PathProgramCache]: Analyzing trace with hash 273204512, now seen corresponding path program 842 times [2020-01-16 18:14:12,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:12,192 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112644090] [2020-01-16 18:14:12,192 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:12,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:12,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:14:12,718 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112644090] [2020-01-16 18:14:12,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:12,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:12,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416120748] [2020-01-16 18:14:12,718 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:12,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:12,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:12,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:12,719 INFO L87 Difference]: Start difference. First operand 1576 states and 7075 transitions. Second operand 11 states. [2020-01-16 18:14:12,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:12,901 INFO L93 Difference]: Finished difference Result 2918 states and 11583 transitions. [2020-01-16 18:14:12,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:12,902 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:12,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:12,909 INFO L225 Difference]: With dead ends: 2918 [2020-01-16 18:14:12,909 INFO L226 Difference]: Without dead ends: 2897 [2020-01-16 18:14:12,910 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 18:14:12,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2897 states. [2020-01-16 18:14:13,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2897 to 1571. [2020-01-16 18:14:13,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:14:13,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7061 transitions. [2020-01-16 18:14:13,013 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7061 transitions. Word has length 28 [2020-01-16 18:14:13,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:13,013 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7061 transitions. [2020-01-16 18:14:13,013 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:13,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7061 transitions. [2020-01-16 18:14:13,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:13,016 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:13,016 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 18:14:13,016 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 18:14:13,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:13,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1139442972, now seen corresponding path program 843 times [2020-01-16 18:14:13,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:13,016 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708111982] [2020-01-16 18:14:13,016 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:13,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:13,545 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 18:14:13,545 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708111982] [2020-01-16 18:14:13,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:13,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:13,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107186183] [2020-01-16 18:14:13,545 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:13,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:13,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:13,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:13,546 INFO L87 Difference]: Start difference. First operand 1571 states and 7061 transitions. Second operand 11 states. [2020-01-16 18:14:13,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:13,744 INFO L93 Difference]: Finished difference Result 2922 states and 11590 transitions. [2020-01-16 18:14:13,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:13,744 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:13,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:13,752 INFO L225 Difference]: With dead ends: 2922 [2020-01-16 18:14:13,752 INFO L226 Difference]: Without dead ends: 2907 [2020-01-16 18:14:13,752 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:14:13,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2907 states. [2020-01-16 18:14:13,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2907 to 1577. [2020-01-16 18:14:13,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:14:13,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7072 transitions. [2020-01-16 18:14:13,821 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7072 transitions. Word has length 28 [2020-01-16 18:14:13,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:13,821 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7072 transitions. [2020-01-16 18:14:13,822 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:13,822 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7072 transitions. [2020-01-16 18:14:13,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:13,824 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:13,824 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:14:13,824 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 18:14:13,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:13,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1666119328, now seen corresponding path program 844 times [2020-01-16 18:14:13,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:13,824 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054805001] [2020-01-16 18:14:13,824 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:13,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:14,361 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 18:14:14,361 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054805001] [2020-01-16 18:14:14,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:14,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:14,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142250087] [2020-01-16 18:14:14,362 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:14,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:14,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:14,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:14,362 INFO L87 Difference]: Start difference. First operand 1577 states and 7072 transitions. Second operand 11 states. [2020-01-16 18:14:14,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:14,511 INFO L93 Difference]: Finished difference Result 2927 states and 11594 transitions. [2020-01-16 18:14:14,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:14,512 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:14,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:14,519 INFO L225 Difference]: With dead ends: 2927 [2020-01-16 18:14:14,520 INFO L226 Difference]: Without dead ends: 2901 [2020-01-16 18:14:14,520 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:14:14,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2901 states. [2020-01-16 18:14:14,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2901 to 1571. [2020-01-16 18:14:14,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:14:14,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7055 transitions. [2020-01-16 18:14:14,587 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7055 transitions. Word has length 28 [2020-01-16 18:14:14,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:14,588 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7055 transitions. [2020-01-16 18:14:14,588 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:14,588 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7055 transitions. [2020-01-16 18:14:14,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:14,590 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:14,590 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:14:14,590 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 18:14:14,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:14,590 INFO L82 PathProgramCache]: Analyzing trace with hash -799880868, now seen corresponding path program 845 times [2020-01-16 18:14:14,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:14,590 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689810550] [2020-01-16 18:14:14,591 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:14,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:15,135 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 18:14:15,135 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689810550] [2020-01-16 18:14:15,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:15,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:15,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26142165] [2020-01-16 18:14:15,136 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:15,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:15,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:15,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:15,136 INFO L87 Difference]: Start difference. First operand 1571 states and 7055 transitions. Second operand 11 states. [2020-01-16 18:14:15,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:15,310 INFO L93 Difference]: Finished difference Result 2925 states and 11591 transitions. [2020-01-16 18:14:15,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:15,310 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:15,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:15,317 INFO L225 Difference]: With dead ends: 2925 [2020-01-16 18:14:15,317 INFO L226 Difference]: Without dead ends: 2909 [2020-01-16 18:14:15,317 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 18:14:15,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2909 states. [2020-01-16 18:14:15,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2909 to 1578. [2020-01-16 18:14:15,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:14:15,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7068 transitions. [2020-01-16 18:14:15,384 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7068 transitions. Word has length 28 [2020-01-16 18:14:15,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:15,384 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7068 transitions. [2020-01-16 18:14:15,384 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:15,384 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7068 transitions. [2020-01-16 18:14:15,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:15,386 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:15,386 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 18:14:15,386 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 18:14:15,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:15,386 INFO L82 PathProgramCache]: Analyzing trace with hash -55178370, now seen corresponding path program 846 times [2020-01-16 18:14:15,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:15,387 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123891324] [2020-01-16 18:14:15,387 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:15,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:15,938 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 18:14:15,939 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123891324] [2020-01-16 18:14:15,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:15,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:15,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74274616] [2020-01-16 18:14:15,939 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:15,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:15,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:15,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:15,939 INFO L87 Difference]: Start difference. First operand 1578 states and 7068 transitions. Second operand 11 states. [2020-01-16 18:14:16,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:16,089 INFO L93 Difference]: Finished difference Result 2929 states and 11592 transitions. [2020-01-16 18:14:16,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:16,089 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:16,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:16,097 INFO L225 Difference]: With dead ends: 2929 [2020-01-16 18:14:16,098 INFO L226 Difference]: Without dead ends: 2896 [2020-01-16 18:14:16,098 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:14:16,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2896 states. [2020-01-16 18:14:16,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2896 to 1565. [2020-01-16 18:14:16,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 18:14:16,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7038 transitions. [2020-01-16 18:14:16,171 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7038 transitions. Word has length 28 [2020-01-16 18:14:16,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:16,171 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7038 transitions. [2020-01-16 18:14:16,171 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:16,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7038 transitions. [2020-01-16 18:14:16,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:16,174 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:16,174 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:14:16,174 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 18:14:16,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:16,174 INFO L82 PathProgramCache]: Analyzing trace with hash 248514488, now seen corresponding path program 847 times [2020-01-16 18:14:16,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:16,174 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038316860] [2020-01-16 18:14:16,174 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:16,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:16,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:14:16,701 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038316860] [2020-01-16 18:14:16,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:16,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:16,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972117768] [2020-01-16 18:14:16,701 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:16,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:16,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:16,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:16,702 INFO L87 Difference]: Start difference. First operand 1565 states and 7038 transitions. Second operand 11 states. [2020-01-16 18:14:16,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:16,892 INFO L93 Difference]: Finished difference Result 2912 states and 11570 transitions. [2020-01-16 18:14:16,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:16,892 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:16,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:16,899 INFO L225 Difference]: With dead ends: 2912 [2020-01-16 18:14:16,900 INFO L226 Difference]: Without dead ends: 2897 [2020-01-16 18:14:16,900 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 18:14:16,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2897 states. [2020-01-16 18:14:16,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2897 to 1575. [2020-01-16 18:14:16,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:14:16,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7066 transitions. [2020-01-16 18:14:16,967 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7066 transitions. Word has length 28 [2020-01-16 18:14:16,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:16,968 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7066 transitions. [2020-01-16 18:14:16,968 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:16,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7066 transitions. [2020-01-16 18:14:16,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:16,970 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:16,970 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:14:16,970 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 18:14:16,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:16,970 INFO L82 PathProgramCache]: Analyzing trace with hash 993216986, now seen corresponding path program 848 times [2020-01-16 18:14:16,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:16,970 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369779437] [2020-01-16 18:14:16,970 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:16,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:17,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:14:17,492 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369779437] [2020-01-16 18:14:17,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:17,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:17,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348978631] [2020-01-16 18:14:17,492 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:17,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:17,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:17,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:17,493 INFO L87 Difference]: Start difference. First operand 1575 states and 7066 transitions. Second operand 11 states. [2020-01-16 18:14:17,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:17,702 INFO L93 Difference]: Finished difference Result 2913 states and 11567 transitions. [2020-01-16 18:14:17,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:17,702 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:17,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:17,709 INFO L225 Difference]: With dead ends: 2913 [2020-01-16 18:14:17,710 INFO L226 Difference]: Without dead ends: 2892 [2020-01-16 18:14:17,710 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 18:14:17,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2892 states. [2020-01-16 18:14:17,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2892 to 1570. [2020-01-16 18:14:17,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:14:17,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7052 transitions. [2020-01-16 18:14:17,777 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7052 transitions. Word has length 28 [2020-01-16 18:14:17,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:17,777 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7052 transitions. [2020-01-16 18:14:17,777 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:17,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7052 transitions. [2020-01-16 18:14:17,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:17,779 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:17,780 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:14:17,780 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 18:14:17,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:17,780 INFO L82 PathProgramCache]: Analyzing trace with hash -824570892, now seen corresponding path program 849 times [2020-01-16 18:14:17,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:17,780 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044270568] [2020-01-16 18:14:17,780 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:17,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:18,304 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:14:18,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:14:18,311 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044270568] [2020-01-16 18:14:18,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:18,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:18,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341109963] [2020-01-16 18:14:18,311 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:18,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:18,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:18,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:18,312 INFO L87 Difference]: Start difference. First operand 1570 states and 7052 transitions. Second operand 11 states. [2020-01-16 18:14:18,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:18,572 INFO L93 Difference]: Finished difference Result 2914 states and 11569 transitions. [2020-01-16 18:14:18,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:18,573 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:18,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:18,580 INFO L225 Difference]: With dead ends: 2914 [2020-01-16 18:14:18,580 INFO L226 Difference]: Without dead ends: 2899 [2020-01-16 18:14:18,580 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:14:18,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-01-16 18:14:18,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1575. [2020-01-16 18:14:18,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:14:18,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7061 transitions. [2020-01-16 18:14:18,648 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7061 transitions. Word has length 28 [2020-01-16 18:14:18,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:18,648 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7061 transitions. [2020-01-16 18:14:18,648 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:18,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7061 transitions. [2020-01-16 18:14:18,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:18,650 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:18,650 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 18:14:18,651 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 18:14:18,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:18,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1409536602, now seen corresponding path program 850 times [2020-01-16 18:14:18,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:18,651 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991994669] [2020-01-16 18:14:18,651 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:18,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:19,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:14:19,156 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991994669] [2020-01-16 18:14:19,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:19,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:19,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481027013] [2020-01-16 18:14:19,157 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:19,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:19,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:19,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:19,157 INFO L87 Difference]: Start difference. First operand 1575 states and 7061 transitions. Second operand 11 states. [2020-01-16 18:14:19,366 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 30 [2020-01-16 18:14:19,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:19,383 INFO L93 Difference]: Finished difference Result 2917 states and 11570 transitions. [2020-01-16 18:14:19,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:19,384 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:19,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:19,391 INFO L225 Difference]: With dead ends: 2917 [2020-01-16 18:14:19,392 INFO L226 Difference]: Without dead ends: 2894 [2020-01-16 18:14:19,392 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:14:19,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2020-01-16 18:14:19,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 1570. [2020-01-16 18:14:19,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:14:19,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7047 transitions. [2020-01-16 18:14:19,457 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7047 transitions. Word has length 28 [2020-01-16 18:14:19,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:19,457 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7047 transitions. [2020-01-16 18:14:19,457 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:19,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7047 transitions. [2020-01-16 18:14:19,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:19,459 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:19,459 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 18:14:19,459 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 18:14:19,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:19,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1531072564, now seen corresponding path program 851 times [2020-01-16 18:14:19,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:19,460 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547343479] [2020-01-16 18:14:19,460 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:19,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:19,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:14:19,972 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547343479] [2020-01-16 18:14:19,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:19,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:19,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988189749] [2020-01-16 18:14:19,972 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:19,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:19,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:19,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:19,973 INFO L87 Difference]: Start difference. First operand 1570 states and 7047 transitions. Second operand 11 states. [2020-01-16 18:14:20,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:20,182 INFO L93 Difference]: Finished difference Result 2917 states and 11571 transitions. [2020-01-16 18:14:20,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:20,183 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:20,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:20,190 INFO L225 Difference]: With dead ends: 2917 [2020-01-16 18:14:20,190 INFO L226 Difference]: Without dead ends: 2901 [2020-01-16 18:14:20,191 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 18:14:20,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2901 states. [2020-01-16 18:14:20,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2901 to 1576. [2020-01-16 18:14:20,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:14:20,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7058 transitions. [2020-01-16 18:14:20,257 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7058 transitions. Word has length 28 [2020-01-16 18:14:20,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:20,257 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7058 transitions. [2020-01-16 18:14:20,257 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:20,257 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7058 transitions. [2020-01-16 18:14:20,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:20,259 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:20,259 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:14:20,260 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 18:14:20,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:20,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1274489736, now seen corresponding path program 852 times [2020-01-16 18:14:20,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:20,260 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891865528] [2020-01-16 18:14:20,260 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:20,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:20,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:14:20,776 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891865528] [2020-01-16 18:14:20,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:20,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:20,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403340974] [2020-01-16 18:14:20,776 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:20,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:20,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:20,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:20,777 INFO L87 Difference]: Start difference. First operand 1576 states and 7058 transitions. Second operand 11 states. [2020-01-16 18:14:20,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:20,970 INFO L93 Difference]: Finished difference Result 2919 states and 11569 transitions. [2020-01-16 18:14:20,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:20,970 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:20,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:20,977 INFO L225 Difference]: With dead ends: 2919 [2020-01-16 18:14:20,978 INFO L226 Difference]: Without dead ends: 2890 [2020-01-16 18:14:20,978 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 18:14:21,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2890 states. [2020-01-16 18:14:21,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2890 to 1565. [2020-01-16 18:14:21,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 18:14:21,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7033 transitions. [2020-01-16 18:14:21,043 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7033 transitions. Word has length 28 [2020-01-16 18:14:21,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:21,044 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7033 transitions. [2020-01-16 18:14:21,044 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:21,044 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7033 transitions. [2020-01-16 18:14:21,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:21,046 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:21,046 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:14:21,046 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 18:14:21,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:21,046 INFO L82 PathProgramCache]: Analyzing trace with hash 259017592, now seen corresponding path program 853 times [2020-01-16 18:14:21,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:21,046 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330609004] [2020-01-16 18:14:21,047 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:21,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:21,569 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 18:14:21,569 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330609004] [2020-01-16 18:14:21,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:21,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:21,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278321175] [2020-01-16 18:14:21,569 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:21,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:21,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:21,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:21,570 INFO L87 Difference]: Start difference. First operand 1565 states and 7033 transitions. Second operand 11 states. [2020-01-16 18:14:21,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:21,776 INFO L93 Difference]: Finished difference Result 2928 states and 11597 transitions. [2020-01-16 18:14:21,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:21,777 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:21,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:21,784 INFO L225 Difference]: With dead ends: 2928 [2020-01-16 18:14:21,784 INFO L226 Difference]: Without dead ends: 2913 [2020-01-16 18:14:21,784 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 18:14:21,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2913 states. [2020-01-16 18:14:21,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2913 to 1578. [2020-01-16 18:14:21,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:14:21,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7068 transitions. [2020-01-16 18:14:21,850 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7068 transitions. Word has length 28 [2020-01-16 18:14:21,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:21,850 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7068 transitions. [2020-01-16 18:14:21,850 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:21,850 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7068 transitions. [2020-01-16 18:14:21,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:21,852 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:21,852 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 18:14:21,853 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 18:14:21,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:21,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1748422588, now seen corresponding path program 854 times [2020-01-16 18:14:21,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:21,853 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379591724] [2020-01-16 18:14:21,853 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:21,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:22,382 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 18:14:22,382 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379591724] [2020-01-16 18:14:22,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:22,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:22,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127507089] [2020-01-16 18:14:22,383 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:22,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:22,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:22,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:22,383 INFO L87 Difference]: Start difference. First operand 1578 states and 7068 transitions. Second operand 11 states. [2020-01-16 18:14:22,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:22,545 INFO L93 Difference]: Finished difference Result 2933 states and 11601 transitions. [2020-01-16 18:14:22,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:22,545 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:22,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:22,552 INFO L225 Difference]: With dead ends: 2933 [2020-01-16 18:14:22,552 INFO L226 Difference]: Without dead ends: 2907 [2020-01-16 18:14:22,553 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:14:22,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2907 states. [2020-01-16 18:14:22,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2907 to 1572. [2020-01-16 18:14:22,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:14:22,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7051 transitions. [2020-01-16 18:14:22,618 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7051 transitions. Word has length 28 [2020-01-16 18:14:22,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:22,618 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7051 transitions. [2020-01-16 18:14:22,618 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:22,618 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7051 transitions. [2020-01-16 18:14:22,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:22,621 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:22,621 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:14:22,621 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 18:14:22,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:22,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1869958550, now seen corresponding path program 855 times [2020-01-16 18:14:22,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:22,621 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587541395] [2020-01-16 18:14:22,621 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:22,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:23,145 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 18:14:23,146 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587541395] [2020-01-16 18:14:23,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:23,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:23,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883174934] [2020-01-16 18:14:23,146 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:23,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:23,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:23,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:23,147 INFO L87 Difference]: Start difference. First operand 1572 states and 7051 transitions. Second operand 11 states. [2020-01-16 18:14:23,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:23,372 INFO L93 Difference]: Finished difference Result 2925 states and 11586 transitions. [2020-01-16 18:14:23,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:23,373 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:23,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:23,380 INFO L225 Difference]: With dead ends: 2925 [2020-01-16 18:14:23,380 INFO L226 Difference]: Without dead ends: 2910 [2020-01-16 18:14:23,380 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:14:23,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2910 states. [2020-01-16 18:14:23,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2910 to 1577. [2020-01-16 18:14:23,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1577 states. [2020-01-16 18:14:23,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 7060 transitions. [2020-01-16 18:14:23,446 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 7060 transitions. Word has length 28 [2020-01-16 18:14:23,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:23,447 INFO L478 AbstractCegarLoop]: Abstraction has 1577 states and 7060 transitions. [2020-01-16 18:14:23,447 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:23,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 7060 transitions. [2020-01-16 18:14:23,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:23,449 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:23,449 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 18:14:23,449 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 18:14:23,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:23,449 INFO L82 PathProgramCache]: Analyzing trace with hash -190901252, now seen corresponding path program 856 times [2020-01-16 18:14:23,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:23,449 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702471162] [2020-01-16 18:14:23,450 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:23,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:23,965 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 18:14:23,965 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702471162] [2020-01-16 18:14:23,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:23,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:23,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321118198] [2020-01-16 18:14:23,965 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:23,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:23,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:23,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:23,966 INFO L87 Difference]: Start difference. First operand 1577 states and 7060 transitions. Second operand 11 states. [2020-01-16 18:14:24,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:24,156 INFO L93 Difference]: Finished difference Result 2928 states and 11587 transitions. [2020-01-16 18:14:24,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:24,157 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:24,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:24,164 INFO L225 Difference]: With dead ends: 2928 [2020-01-16 18:14:24,164 INFO L226 Difference]: Without dead ends: 2905 [2020-01-16 18:14:24,164 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:14:24,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2905 states. [2020-01-16 18:14:24,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2905 to 1572. [2020-01-16 18:14:24,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:14:24,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7046 transitions. [2020-01-16 18:14:24,232 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7046 transitions. Word has length 28 [2020-01-16 18:14:24,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:24,232 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7046 transitions. [2020-01-16 18:14:24,232 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:24,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7046 transitions. [2020-01-16 18:14:24,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:24,234 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:24,234 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:14:24,234 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 18:14:24,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:24,234 INFO L82 PathProgramCache]: Analyzing trace with hash -2008689130, now seen corresponding path program 857 times [2020-01-16 18:14:24,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:24,235 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704453688] [2020-01-16 18:14:24,235 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:24,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:24,769 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 18:14:24,770 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704453688] [2020-01-16 18:14:24,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:24,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:24,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732560214] [2020-01-16 18:14:24,770 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:24,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:24,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:24,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:24,770 INFO L87 Difference]: Start difference. First operand 1572 states and 7046 transitions. Second operand 11 states. [2020-01-16 18:14:24,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:24,979 INFO L93 Difference]: Finished difference Result 2940 states and 11611 transitions. [2020-01-16 18:14:24,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:24,979 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:24,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:24,986 INFO L225 Difference]: With dead ends: 2940 [2020-01-16 18:14:24,986 INFO L226 Difference]: Without dead ends: 2920 [2020-01-16 18:14:24,986 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:14:25,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2920 states. [2020-01-16 18:14:25,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2920 to 1582. [2020-01-16 18:14:25,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2020-01-16 18:14:25,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 7063 transitions. [2020-01-16 18:14:25,053 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 7063 transitions. Word has length 28 [2020-01-16 18:14:25,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:25,053 INFO L478 AbstractCegarLoop]: Abstraction has 1582 states and 7063 transitions. [2020-01-16 18:14:25,053 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:25,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 7063 transitions. [2020-01-16 18:14:25,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:25,056 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:25,056 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 18:14:25,056 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 18:14:25,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:25,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1263986632, now seen corresponding path program 858 times [2020-01-16 18:14:25,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:25,056 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021780141] [2020-01-16 18:14:25,056 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:25,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:25,611 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-01-16 18:14:25,617 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 18:14:25,618 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021780141] [2020-01-16 18:14:25,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:25,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:25,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215867923] [2020-01-16 18:14:25,618 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:25,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:25,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:25,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:25,619 INFO L87 Difference]: Start difference. First operand 1582 states and 7063 transitions. Second operand 11 states. [2020-01-16 18:14:25,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:25,819 INFO L93 Difference]: Finished difference Result 2938 states and 11599 transitions. [2020-01-16 18:14:25,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:25,820 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:25,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:25,827 INFO L225 Difference]: With dead ends: 2938 [2020-01-16 18:14:25,828 INFO L226 Difference]: Without dead ends: 2903 [2020-01-16 18:14:25,828 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 18:14:25,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2903 states. [2020-01-16 18:14:25,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2903 to 1565. [2020-01-16 18:14:25,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 18:14:25,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7026 transitions. [2020-01-16 18:14:25,900 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7026 transitions. Word has length 28 [2020-01-16 18:14:25,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:25,900 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7026 transitions. [2020-01-16 18:14:25,900 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:25,900 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7026 transitions. [2020-01-16 18:14:25,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:25,902 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:25,902 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:14:25,903 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 18:14:25,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:25,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1014223194, now seen corresponding path program 859 times [2020-01-16 18:14:25,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:25,903 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362285694] [2020-01-16 18:14:25,903 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:25,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:26,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:14:26,434 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362285694] [2020-01-16 18:14:26,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:26,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:26,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059031083] [2020-01-16 18:14:26,434 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:26,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:26,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:26,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:26,435 INFO L87 Difference]: Start difference. First operand 1565 states and 7026 transitions. Second operand 11 states. [2020-01-16 18:14:26,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:26,627 INFO L93 Difference]: Finished difference Result 2935 states and 11609 transitions. [2020-01-16 18:14:26,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:26,628 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:26,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:26,635 INFO L225 Difference]: With dead ends: 2935 [2020-01-16 18:14:26,635 INFO L226 Difference]: Without dead ends: 2919 [2020-01-16 18:14:26,635 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:14:26,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2919 states. [2020-01-16 18:14:26,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2919 to 1580. [2020-01-16 18:14:26,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:14:26,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7067 transitions. [2020-01-16 18:14:26,702 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7067 transitions. Word has length 28 [2020-01-16 18:14:26,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:26,702 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7067 transitions. [2020-01-16 18:14:26,702 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:26,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7067 transitions. [2020-01-16 18:14:26,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:26,704 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:26,704 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:14:26,705 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 18:14:26,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:26,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1758925692, now seen corresponding path program 860 times [2020-01-16 18:14:26,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:26,705 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829331657] [2020-01-16 18:14:26,705 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:26,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:27,246 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 18:14:27,246 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829331657] [2020-01-16 18:14:27,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:27,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:27,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795391093] [2020-01-16 18:14:27,246 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:27,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:27,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:27,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:27,247 INFO L87 Difference]: Start difference. First operand 1580 states and 7067 transitions. Second operand 11 states. [2020-01-16 18:14:27,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:27,393 INFO L93 Difference]: Finished difference Result 2939 states and 11610 transitions. [2020-01-16 18:14:27,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:27,393 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:27,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:27,400 INFO L225 Difference]: With dead ends: 2939 [2020-01-16 18:14:27,400 INFO L226 Difference]: Without dead ends: 2912 [2020-01-16 18:14:27,400 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 18:14:27,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2912 states. [2020-01-16 18:14:27,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2912 to 1573. [2020-01-16 18:14:27,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:14:27,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7047 transitions. [2020-01-16 18:14:27,467 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7047 transitions. Word has length 28 [2020-01-16 18:14:27,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:27,467 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7047 transitions. [2020-01-16 18:14:27,467 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:27,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7047 transitions. [2020-01-16 18:14:27,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:27,469 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:27,470 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 18:14:27,470 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 18:14:27,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:27,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1669803144, now seen corresponding path program 861 times [2020-01-16 18:14:27,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:27,470 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029351288] [2020-01-16 18:14:27,470 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:27,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:28,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:14:28,004 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029351288] [2020-01-16 18:14:28,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:28,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:28,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076690438] [2020-01-16 18:14:28,004 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:28,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:28,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:28,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:28,005 INFO L87 Difference]: Start difference. First operand 1573 states and 7047 transitions. Second operand 11 states. [2020-01-16 18:14:28,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:28,206 INFO L93 Difference]: Finished difference Result 2932 states and 11597 transitions. [2020-01-16 18:14:28,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:28,206 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:28,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:28,213 INFO L225 Difference]: With dead ends: 2932 [2020-01-16 18:14:28,213 INFO L226 Difference]: Without dead ends: 2916 [2020-01-16 18:14:28,213 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 18:14:28,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2020-01-16 18:14:28,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 1579. [2020-01-16 18:14:28,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-01-16 18:14:28,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 7058 transitions. [2020-01-16 18:14:28,280 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 7058 transitions. Word has length 28 [2020-01-16 18:14:28,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:28,280 INFO L478 AbstractCegarLoop]: Abstraction has 1579 states and 7058 transitions. [2020-01-16 18:14:28,280 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:28,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 7058 transitions. [2020-01-16 18:14:28,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:28,282 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:28,282 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 18:14:28,283 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 18:14:28,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:28,283 INFO L82 PathProgramCache]: Analyzing trace with hash -180398148, now seen corresponding path program 862 times [2020-01-16 18:14:28,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:28,283 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7937460] [2020-01-16 18:14:28,283 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:28,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:28,805 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 18:14:28,805 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7937460] [2020-01-16 18:14:28,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:28,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:28,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511200636] [2020-01-16 18:14:28,805 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:28,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:28,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:28,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:28,806 INFO L87 Difference]: Start difference. First operand 1579 states and 7058 transitions. Second operand 11 states. [2020-01-16 18:14:28,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:28,994 INFO L93 Difference]: Finished difference Result 2934 states and 11595 transitions. [2020-01-16 18:14:28,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:28,995 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:28,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:29,002 INFO L225 Difference]: With dead ends: 2934 [2020-01-16 18:14:29,002 INFO L226 Difference]: Without dead ends: 2910 [2020-01-16 18:14:29,003 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:14:29,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2910 states. [2020-01-16 18:14:29,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2910 to 1573. [2020-01-16 18:14:29,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:14:29,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7041 transitions. [2020-01-16 18:14:29,068 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7041 transitions. Word has length 28 [2020-01-16 18:14:29,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:29,068 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7041 transitions. [2020-01-16 18:14:29,068 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:29,068 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7041 transitions. [2020-01-16 18:14:29,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:29,071 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:29,071 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 18:14:29,071 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 18:14:29,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:29,071 INFO L82 PathProgramCache]: Analyzing trace with hash 685840312, now seen corresponding path program 863 times [2020-01-16 18:14:29,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:29,071 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328782943] [2020-01-16 18:14:29,071 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:29,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:29,607 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 18:14:29,607 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328782943] [2020-01-16 18:14:29,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:29,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:29,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519271355] [2020-01-16 18:14:29,608 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:29,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:29,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:29,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:29,608 INFO L87 Difference]: Start difference. First operand 1573 states and 7041 transitions. Second operand 11 states. [2020-01-16 18:14:29,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:29,746 INFO L93 Difference]: Finished difference Result 2944 states and 11614 transitions. [2020-01-16 18:14:29,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:29,747 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:29,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:29,754 INFO L225 Difference]: With dead ends: 2944 [2020-01-16 18:14:29,754 INFO L226 Difference]: Without dead ends: 2924 [2020-01-16 18:14:29,754 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 18:14:29,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2924 states. [2020-01-16 18:14:29,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2924 to 1583. [2020-01-16 18:14:29,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-01-16 18:14:29,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 7058 transitions. [2020-01-16 18:14:29,821 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 7058 transitions. Word has length 28 [2020-01-16 18:14:29,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:29,821 INFO L478 AbstractCegarLoop]: Abstraction has 1583 states and 7058 transitions. [2020-01-16 18:14:29,821 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:29,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 7058 transitions. [2020-01-16 18:14:29,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:29,823 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:29,823 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 18:14:29,823 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 18:14:29,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:29,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1430542810, now seen corresponding path program 864 times [2020-01-16 18:14:29,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:29,824 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57739990] [2020-01-16 18:14:29,824 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:29,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:30,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:14:30,364 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57739990] [2020-01-16 18:14:30,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:30,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:30,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467423299] [2020-01-16 18:14:30,364 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:30,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:30,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:30,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:30,365 INFO L87 Difference]: Start difference. First operand 1583 states and 7058 transitions. Second operand 11 states. [2020-01-16 18:14:30,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:30,581 INFO L93 Difference]: Finished difference Result 2942 states and 11602 transitions. [2020-01-16 18:14:30,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:30,581 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:30,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:30,588 INFO L225 Difference]: With dead ends: 2942 [2020-01-16 18:14:30,588 INFO L226 Difference]: Without dead ends: 2899 [2020-01-16 18:14:30,588 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 18:14:30,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-01-16 18:14:30,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1558. [2020-01-16 18:14:30,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1558 states. [2020-01-16 18:14:30,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 7008 transitions. [2020-01-16 18:14:30,654 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 7008 transitions. Word has length 28 [2020-01-16 18:14:30,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:30,655 INFO L478 AbstractCegarLoop]: Abstraction has 1558 states and 7008 transitions. [2020-01-16 18:14:30,655 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:30,655 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 7008 transitions. [2020-01-16 18:14:30,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:30,657 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:30,657 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:14:30,657 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 18:14:30,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:30,657 INFO L82 PathProgramCache]: Analyzing trace with hash -556215610, now seen corresponding path program 865 times [2020-01-16 18:14:30,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:30,657 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121840349] [2020-01-16 18:14:30,657 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:30,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:31,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:14:31,176 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121840349] [2020-01-16 18:14:31,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:31,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:31,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100860303] [2020-01-16 18:14:31,177 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:31,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:31,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:31,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:31,177 INFO L87 Difference]: Start difference. First operand 1558 states and 7008 transitions. Second operand 11 states. [2020-01-16 18:14:31,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:31,350 INFO L93 Difference]: Finished difference Result 2889 states and 11495 transitions. [2020-01-16 18:14:31,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:31,350 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:31,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:31,357 INFO L225 Difference]: With dead ends: 2889 [2020-01-16 18:14:31,358 INFO L226 Difference]: Without dead ends: 2874 [2020-01-16 18:14:31,358 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:14:31,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2874 states. [2020-01-16 18:14:31,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2874 to 1573. [2020-01-16 18:14:31,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:14:31,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7057 transitions. [2020-01-16 18:14:31,423 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7057 transitions. Word has length 28 [2020-01-16 18:14:31,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:31,424 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7057 transitions. [2020-01-16 18:14:31,424 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:31,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7057 transitions. [2020-01-16 18:14:31,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:31,426 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:31,426 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:14:31,426 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 18:14:31,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:31,426 INFO L82 PathProgramCache]: Analyzing trace with hash 188486888, now seen corresponding path program 866 times [2020-01-16 18:14:31,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:31,426 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468364223] [2020-01-16 18:14:31,427 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:31,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:31,968 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 18:14:31,969 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468364223] [2020-01-16 18:14:31,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:31,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:31,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952197645] [2020-01-16 18:14:31,969 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:31,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:31,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:31,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:31,970 INFO L87 Difference]: Start difference. First operand 1573 states and 7057 transitions. Second operand 11 states. [2020-01-16 18:14:32,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:32,136 INFO L93 Difference]: Finished difference Result 2890 states and 11492 transitions. [2020-01-16 18:14:32,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:32,137 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:32,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:32,144 INFO L225 Difference]: With dead ends: 2890 [2020-01-16 18:14:32,144 INFO L226 Difference]: Without dead ends: 2869 [2020-01-16 18:14:32,144 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 18:14:32,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2869 states. [2020-01-16 18:14:32,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2869 to 1568. [2020-01-16 18:14:32,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 18:14:32,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7043 transitions. [2020-01-16 18:14:32,209 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7043 transitions. Word has length 28 [2020-01-16 18:14:32,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:32,210 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7043 transitions. [2020-01-16 18:14:32,210 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:32,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7043 transitions. [2020-01-16 18:14:32,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:32,212 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:32,212 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 18:14:32,212 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 18:14:32,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:32,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1054725348, now seen corresponding path program 867 times [2020-01-16 18:14:32,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:32,213 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337227166] [2020-01-16 18:14:32,213 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:32,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:32,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:14:32,718 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337227166] [2020-01-16 18:14:32,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:32,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:32,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849336079] [2020-01-16 18:14:32,718 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:32,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:32,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:32,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:32,719 INFO L87 Difference]: Start difference. First operand 1568 states and 7043 transitions. Second operand 11 states. [2020-01-16 18:14:32,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:32,903 INFO L93 Difference]: Finished difference Result 2894 states and 11499 transitions. [2020-01-16 18:14:32,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:32,903 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:32,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:32,910 INFO L225 Difference]: With dead ends: 2894 [2020-01-16 18:14:32,911 INFO L226 Difference]: Without dead ends: 2879 [2020-01-16 18:14:32,911 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 18:14:32,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2879 states. [2020-01-16 18:14:32,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2879 to 1574. [2020-01-16 18:14:32,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1574 states. [2020-01-16 18:14:32,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 7054 transitions. [2020-01-16 18:14:32,977 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 7054 transitions. Word has length 28 [2020-01-16 18:14:32,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:32,977 INFO L478 AbstractCegarLoop]: Abstraction has 1574 states and 7054 transitions. [2020-01-16 18:14:32,977 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:32,977 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 7054 transitions. [2020-01-16 18:14:32,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:32,979 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:32,979 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 18:14:32,979 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 18:14:32,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:32,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1750836952, now seen corresponding path program 868 times [2020-01-16 18:14:32,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:32,980 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108224012] [2020-01-16 18:14:32,980 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:32,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:33,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:14:33,491 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108224012] [2020-01-16 18:14:33,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:33,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:33,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047644695] [2020-01-16 18:14:33,492 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:33,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:33,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:33,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:33,492 INFO L87 Difference]: Start difference. First operand 1574 states and 7054 transitions. Second operand 11 states. [2020-01-16 18:14:33,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:33,630 INFO L93 Difference]: Finished difference Result 2899 states and 11503 transitions. [2020-01-16 18:14:33,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:33,631 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:33,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:33,638 INFO L225 Difference]: With dead ends: 2899 [2020-01-16 18:14:33,638 INFO L226 Difference]: Without dead ends: 2873 [2020-01-16 18:14:33,638 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:14:33,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2873 states. [2020-01-16 18:14:33,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2873 to 1568. [2020-01-16 18:14:33,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 18:14:33,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7037 transitions. [2020-01-16 18:14:33,705 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7037 transitions. Word has length 28 [2020-01-16 18:14:33,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:33,705 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7037 transitions. [2020-01-16 18:14:33,705 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:33,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7037 transitions. [2020-01-16 18:14:33,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:33,707 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:33,707 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:14:33,707 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 18:14:33,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:33,708 INFO L82 PathProgramCache]: Analyzing trace with hash -884598492, now seen corresponding path program 869 times [2020-01-16 18:14:33,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:33,708 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195169151] [2020-01-16 18:14:33,708 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:33,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:34,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:14:34,239 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195169151] [2020-01-16 18:14:34,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:34,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:34,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476468709] [2020-01-16 18:14:34,239 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:34,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:34,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:34,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:34,240 INFO L87 Difference]: Start difference. First operand 1568 states and 7037 transitions. Second operand 11 states. [2020-01-16 18:14:34,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:34,415 INFO L93 Difference]: Finished difference Result 2897 states and 11500 transitions. [2020-01-16 18:14:34,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:34,415 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:34,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:34,422 INFO L225 Difference]: With dead ends: 2897 [2020-01-16 18:14:34,422 INFO L226 Difference]: Without dead ends: 2881 [2020-01-16 18:14:34,422 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 18:14:34,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2881 states. [2020-01-16 18:14:34,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2881 to 1575. [2020-01-16 18:14:34,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:14:34,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7050 transitions. [2020-01-16 18:14:34,489 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7050 transitions. Word has length 28 [2020-01-16 18:14:34,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:34,489 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7050 transitions. [2020-01-16 18:14:34,489 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:34,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7050 transitions. [2020-01-16 18:14:34,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:34,491 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:34,492 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 18:14:34,492 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 18:14:34,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:34,492 INFO L82 PathProgramCache]: Analyzing trace with hash -139895994, now seen corresponding path program 870 times [2020-01-16 18:14:34,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:34,492 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563203319] [2020-01-16 18:14:34,492 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:34,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:35,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:14:35,009 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563203319] [2020-01-16 18:14:35,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:35,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:35,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659017483] [2020-01-16 18:14:35,009 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:35,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:35,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:35,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:35,010 INFO L87 Difference]: Start difference. First operand 1575 states and 7050 transitions. Second operand 11 states. [2020-01-16 18:14:35,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:35,175 INFO L93 Difference]: Finished difference Result 2901 states and 11501 transitions. [2020-01-16 18:14:35,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:35,176 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:35,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:35,183 INFO L225 Difference]: With dead ends: 2901 [2020-01-16 18:14:35,183 INFO L226 Difference]: Without dead ends: 2868 [2020-01-16 18:14:35,183 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 18:14:35,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2868 states. [2020-01-16 18:14:35,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2868 to 1562. [2020-01-16 18:14:35,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1562 states. [2020-01-16 18:14:35,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1562 states to 1562 states and 7022 transitions. [2020-01-16 18:14:35,249 INFO L78 Accepts]: Start accepts. Automaton has 1562 states and 7022 transitions. Word has length 28 [2020-01-16 18:14:35,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:35,249 INFO L478 AbstractCegarLoop]: Abstraction has 1562 states and 7022 transitions. [2020-01-16 18:14:35,249 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:35,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1562 states and 7022 transitions. [2020-01-16 18:14:35,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:35,251 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:35,251 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 18:14:35,252 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 18:14:35,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:35,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1913959506, now seen corresponding path program 871 times [2020-01-16 18:14:35,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:35,252 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924462300] [2020-01-16 18:14:35,252 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:35,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:35,764 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 18:14:35,764 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924462300] [2020-01-16 18:14:35,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:35,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:35,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614509554] [2020-01-16 18:14:35,765 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:35,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:35,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:35,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:35,765 INFO L87 Difference]: Start difference. First operand 1562 states and 7022 transitions. Second operand 11 states. [2020-01-16 18:14:35,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:35,944 INFO L93 Difference]: Finished difference Result 2872 states and 11448 transitions. [2020-01-16 18:14:35,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:35,945 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:35,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:35,952 INFO L225 Difference]: With dead ends: 2872 [2020-01-16 18:14:35,952 INFO L226 Difference]: Without dead ends: 2857 [2020-01-16 18:14:35,952 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 18:14:35,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2857 states. [2020-01-16 18:14:36,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2857 to 1570. [2020-01-16 18:14:36,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:14:36,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7042 transitions. [2020-01-16 18:14:36,021 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7042 transitions. Word has length 28 [2020-01-16 18:14:36,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:36,021 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7042 transitions. [2020-01-16 18:14:36,021 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:36,021 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7042 transitions. [2020-01-16 18:14:36,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:36,024 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:36,024 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:14:36,024 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 18:14:36,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:36,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1636305292, now seen corresponding path program 872 times [2020-01-16 18:14:36,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:36,024 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167378698] [2020-01-16 18:14:36,024 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:36,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:36,538 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 18:14:36,538 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167378698] [2020-01-16 18:14:36,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:36,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:36,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533937702] [2020-01-16 18:14:36,539 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:36,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:36,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:36,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:36,539 INFO L87 Difference]: Start difference. First operand 1570 states and 7042 transitions. Second operand 11 states. [2020-01-16 18:14:36,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:36,771 INFO L93 Difference]: Finished difference Result 2873 states and 11445 transitions. [2020-01-16 18:14:36,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:36,771 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:36,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:36,778 INFO L225 Difference]: With dead ends: 2873 [2020-01-16 18:14:36,778 INFO L226 Difference]: Without dead ends: 2852 [2020-01-16 18:14:36,778 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 18:14:36,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2852 states. [2020-01-16 18:14:36,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2852 to 1565. [2020-01-16 18:14:36,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 18:14:36,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7030 transitions. [2020-01-16 18:14:36,844 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7030 transitions. Word has length 28 [2020-01-16 18:14:36,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:36,845 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7030 transitions. [2020-01-16 18:14:36,845 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:36,845 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7030 transitions. [2020-01-16 18:14:36,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:36,847 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:36,847 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:14:36,847 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 18:14:36,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:36,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1202891370, now seen corresponding path program 873 times [2020-01-16 18:14:36,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:36,847 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985394325] [2020-01-16 18:14:36,848 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:36,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:37,352 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 18:14:37,352 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985394325] [2020-01-16 18:14:37,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:37,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:37,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862616616] [2020-01-16 18:14:37,353 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:37,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:37,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:37,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:37,353 INFO L87 Difference]: Start difference. First operand 1565 states and 7030 transitions. Second operand 11 states. [2020-01-16 18:14:37,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:37,578 INFO L93 Difference]: Finished difference Result 2867 states and 11433 transitions. [2020-01-16 18:14:37,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:37,579 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:37,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:37,585 INFO L225 Difference]: With dead ends: 2867 [2020-01-16 18:14:37,586 INFO L226 Difference]: Without dead ends: 2852 [2020-01-16 18:14:37,586 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:14:37,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2852 states. [2020-01-16 18:14:37,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2852 to 1568. [2020-01-16 18:14:37,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 18:14:37,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7035 transitions. [2020-01-16 18:14:37,651 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7035 transitions. Word has length 28 [2020-01-16 18:14:37,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:37,652 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7035 transitions. [2020-01-16 18:14:37,652 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:37,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7035 transitions. [2020-01-16 18:14:37,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:37,654 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:37,654 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:14:37,654 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 18:14:37,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:37,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1744945170, now seen corresponding path program 874 times [2020-01-16 18:14:37,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:37,654 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56806238] [2020-01-16 18:14:37,654 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:37,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:38,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:14:38,194 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56806238] [2020-01-16 18:14:38,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:38,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:38,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574916356] [2020-01-16 18:14:38,194 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:38,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:38,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:38,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:38,194 INFO L87 Difference]: Start difference. First operand 1568 states and 7035 transitions. Second operand 11 states. [2020-01-16 18:14:38,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:38,426 INFO L93 Difference]: Finished difference Result 2865 states and 11426 transitions. [2020-01-16 18:14:38,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:38,426 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:38,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:38,434 INFO L225 Difference]: With dead ends: 2865 [2020-01-16 18:14:38,434 INFO L226 Difference]: Without dead ends: 2849 [2020-01-16 18:14:38,434 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 18:14:38,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2849 states. [2020-01-16 18:14:38,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2849 to 1565. [2020-01-16 18:14:38,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-01-16 18:14:38,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 7027 transitions. [2020-01-16 18:14:38,500 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 7027 transitions. Word has length 28 [2020-01-16 18:14:38,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:38,500 INFO L478 AbstractCegarLoop]: Abstraction has 1565 states and 7027 transitions. [2020-01-16 18:14:38,500 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:38,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 7027 transitions. [2020-01-16 18:14:38,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:38,502 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:38,503 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 18:14:38,503 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 18:14:38,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:38,503 INFO L82 PathProgramCache]: Analyzing trace with hash -447685768, now seen corresponding path program 875 times [2020-01-16 18:14:38,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:38,503 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423450977] [2020-01-16 18:14:38,503 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:38,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:39,021 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 18:14:39,022 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423450977] [2020-01-16 18:14:39,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:39,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:39,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894128681] [2020-01-16 18:14:39,022 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:39,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:39,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:39,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:39,023 INFO L87 Difference]: Start difference. First operand 1565 states and 7027 transitions. Second operand 11 states. [2020-01-16 18:14:39,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:39,210 INFO L93 Difference]: Finished difference Result 2869 states and 11434 transitions. [2020-01-16 18:14:39,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:39,211 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:39,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:39,218 INFO L225 Difference]: With dead ends: 2869 [2020-01-16 18:14:39,219 INFO L226 Difference]: Without dead ends: 2853 [2020-01-16 18:14:39,219 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:14:39,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2853 states. [2020-01-16 18:14:39,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2853 to 1568. [2020-01-16 18:14:39,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 18:14:39,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7032 transitions. [2020-01-16 18:14:39,285 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7032 transitions. Word has length 28 [2020-01-16 18:14:39,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:39,285 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7032 transitions. [2020-01-16 18:14:39,286 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:39,286 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7032 transitions. [2020-01-16 18:14:39,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:39,288 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:39,288 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 18:14:39,288 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 18:14:39,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:39,288 INFO L82 PathProgramCache]: Analyzing trace with hash 144507316, now seen corresponding path program 876 times [2020-01-16 18:14:39,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:39,288 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012226804] [2020-01-16 18:14:39,288 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:39,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:39,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:14:39,796 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012226804] [2020-01-16 18:14:39,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:39,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:39,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106825528] [2020-01-16 18:14:39,796 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:39,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:39,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:39,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:39,797 INFO L87 Difference]: Start difference. First operand 1568 states and 7032 transitions. Second operand 11 states. [2020-01-16 18:14:40,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:40,007 INFO L93 Difference]: Finished difference Result 2866 states and 11425 transitions. [2020-01-16 18:14:40,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:40,007 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:40,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:40,015 INFO L225 Difference]: With dead ends: 2866 [2020-01-16 18:14:40,015 INFO L226 Difference]: Without dead ends: 2847 [2020-01-16 18:14:40,015 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:14:40,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2847 states. [2020-01-16 18:14:40,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2847 to 1562. [2020-01-16 18:14:40,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1562 states. [2020-01-16 18:14:40,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1562 states to 1562 states and 7019 transitions. [2020-01-16 18:14:40,080 INFO L78 Accepts]: Start accepts. Automaton has 1562 states and 7019 transitions. Word has length 28 [2020-01-16 18:14:40,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:40,081 INFO L478 AbstractCegarLoop]: Abstraction has 1562 states and 7019 transitions. [2020-01-16 18:14:40,081 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:40,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1562 states and 7019 transitions. [2020-01-16 18:14:40,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:40,083 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:40,083 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 18:14:40,083 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 18:14:40,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:40,083 INFO L82 PathProgramCache]: Analyzing trace with hash -444470608, now seen corresponding path program 877 times [2020-01-16 18:14:40,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:40,083 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441740346] [2020-01-16 18:14:40,084 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:40,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:40,588 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 18:14:40,589 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441740346] [2020-01-16 18:14:40,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:40,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:40,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133497518] [2020-01-16 18:14:40,589 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:40,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:40,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:40,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:40,589 INFO L87 Difference]: Start difference. First operand 1562 states and 7019 transitions. Second operand 11 states. [2020-01-16 18:14:40,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:40,830 INFO L93 Difference]: Finished difference Result 2884 states and 11468 transitions. [2020-01-16 18:14:40,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:40,830 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:40,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:40,837 INFO L225 Difference]: With dead ends: 2884 [2020-01-16 18:14:40,837 INFO L226 Difference]: Without dead ends: 2869 [2020-01-16 18:14:40,837 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 18:14:40,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2869 states. [2020-01-16 18:14:40,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2869 to 1572. [2020-01-16 18:14:40,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:14:40,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7044 transitions. [2020-01-16 18:14:40,903 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7044 transitions. Word has length 28 [2020-01-16 18:14:40,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:40,903 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7044 transitions. [2020-01-16 18:14:40,903 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:40,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7044 transitions. [2020-01-16 18:14:40,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:40,905 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:40,905 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 18:14:40,906 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 18:14:40,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:40,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1044934388, now seen corresponding path program 878 times [2020-01-16 18:14:40,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:40,906 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138720921] [2020-01-16 18:14:40,906 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:40,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:41,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:14:41,409 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138720921] [2020-01-16 18:14:41,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:41,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:41,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026689481] [2020-01-16 18:14:41,409 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:41,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:41,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:41,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:41,410 INFO L87 Difference]: Start difference. First operand 1572 states and 7044 transitions. Second operand 11 states. [2020-01-16 18:14:41,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:41,555 INFO L93 Difference]: Finished difference Result 2889 states and 11472 transitions. [2020-01-16 18:14:41,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:41,555 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:41,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:41,562 INFO L225 Difference]: With dead ends: 2889 [2020-01-16 18:14:41,562 INFO L226 Difference]: Without dead ends: 2863 [2020-01-16 18:14:41,562 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:14:41,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2863 states. [2020-01-16 18:14:41,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2863 to 1566. [2020-01-16 18:14:41,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1566 states. [2020-01-16 18:14:41,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 7029 transitions. [2020-01-16 18:14:41,629 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 7029 transitions. Word has length 28 [2020-01-16 18:14:41,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:41,629 INFO L478 AbstractCegarLoop]: Abstraction has 1566 states and 7029 transitions. [2020-01-16 18:14:41,629 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:41,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 7029 transitions. [2020-01-16 18:14:41,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:41,631 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:41,631 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:14:41,632 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 18:14:41,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:41,632 INFO L82 PathProgramCache]: Analyzing trace with hash 723142708, now seen corresponding path program 879 times [2020-01-16 18:14:41,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:41,632 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164561593] [2020-01-16 18:14:41,632 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:41,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:42,135 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 18:14:42,135 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164561593] [2020-01-16 18:14:42,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:42,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:42,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417782207] [2020-01-16 18:14:42,136 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:42,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:42,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:42,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:42,136 INFO L87 Difference]: Start difference. First operand 1566 states and 7029 transitions. Second operand 11 states. [2020-01-16 18:14:42,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:42,328 INFO L93 Difference]: Finished difference Result 2874 states and 11443 transitions. [2020-01-16 18:14:42,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:42,328 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:42,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:42,336 INFO L225 Difference]: With dead ends: 2874 [2020-01-16 18:14:42,336 INFO L226 Difference]: Without dead ends: 2859 [2020-01-16 18:14:42,336 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 18:14:42,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2859 states. [2020-01-16 18:14:42,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2859 to 1569. [2020-01-16 18:14:42,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:14:42,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7034 transitions. [2020-01-16 18:14:42,402 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7034 transitions. Word has length 28 [2020-01-16 18:14:42,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:42,402 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7034 transitions. [2020-01-16 18:14:42,402 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:42,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7034 transitions. [2020-01-16 18:14:42,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:42,405 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:42,405 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:14:42,405 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 18:14:42,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:42,405 INFO L82 PathProgramCache]: Analyzing trace with hash -623988048, now seen corresponding path program 880 times [2020-01-16 18:14:42,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:42,405 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187305934] [2020-01-16 18:14:42,405 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:42,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:42,906 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 18:14:42,906 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187305934] [2020-01-16 18:14:42,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:42,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:42,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673217880] [2020-01-16 18:14:42,907 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:42,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:42,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:42,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:42,907 INFO L87 Difference]: Start difference. First operand 1569 states and 7034 transitions. Second operand 11 states. [2020-01-16 18:14:43,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:43,151 INFO L93 Difference]: Finished difference Result 2872 states and 11436 transitions. [2020-01-16 18:14:43,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:43,152 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:43,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:43,159 INFO L225 Difference]: With dead ends: 2872 [2020-01-16 18:14:43,160 INFO L226 Difference]: Without dead ends: 2856 [2020-01-16 18:14:43,160 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:14:43,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2856 states. [2020-01-16 18:14:43,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2856 to 1566. [2020-01-16 18:14:43,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1566 states. [2020-01-16 18:14:43,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 7026 transitions. [2020-01-16 18:14:43,226 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 7026 transitions. Word has length 28 [2020-01-16 18:14:43,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:43,226 INFO L478 AbstractCegarLoop]: Abstraction has 1566 states and 7026 transitions. [2020-01-16 18:14:43,226 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:43,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 7026 transitions. [2020-01-16 18:14:43,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:43,228 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:43,228 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:14:43,228 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 18:14:43,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:43,229 INFO L82 PathProgramCache]: Analyzing trace with hash -2061413384, now seen corresponding path program 881 times [2020-01-16 18:14:43,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:43,229 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128741843] [2020-01-16 18:14:43,229 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:43,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:43,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:14:43,720 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128741843] [2020-01-16 18:14:43,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:43,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:43,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292257251] [2020-01-16 18:14:43,720 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:43,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:43,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:43,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:43,720 INFO L87 Difference]: Start difference. First operand 1566 states and 7026 transitions. Second operand 11 states. [2020-01-16 18:14:43,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:43,914 INFO L93 Difference]: Finished difference Result 2885 states and 11460 transitions. [2020-01-16 18:14:43,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:43,915 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:43,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:43,922 INFO L225 Difference]: With dead ends: 2885 [2020-01-16 18:14:43,922 INFO L226 Difference]: Without dead ends: 2865 [2020-01-16 18:14:43,922 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:14:43,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2865 states. [2020-01-16 18:14:43,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2865 to 1570. [2020-01-16 18:14:43,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:14:43,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7032 transitions. [2020-01-16 18:14:43,989 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7032 transitions. Word has length 28 [2020-01-16 18:14:43,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:43,989 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7032 transitions. [2020-01-16 18:14:43,989 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:43,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7032 transitions. [2020-01-16 18:14:43,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:43,991 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:43,991 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 18:14:43,991 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 18:14:43,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:43,992 INFO L82 PathProgramCache]: Analyzing trace with hash 470103540, now seen corresponding path program 882 times [2020-01-16 18:14:43,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:43,992 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570980961] [2020-01-16 18:14:43,992 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:43,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:44,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:14:44,513 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570980961] [2020-01-16 18:14:44,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:44,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:44,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587909348] [2020-01-16 18:14:44,514 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:44,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:44,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:44,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:44,514 INFO L87 Difference]: Start difference. First operand 1570 states and 7032 transitions. Second operand 11 states. [2020-01-16 18:14:44,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:44,711 INFO L93 Difference]: Finished difference Result 2878 states and 11443 transitions. [2020-01-16 18:14:44,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:44,712 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:44,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:44,719 INFO L225 Difference]: With dead ends: 2878 [2020-01-16 18:14:44,719 INFO L226 Difference]: Without dead ends: 2857 [2020-01-16 18:14:44,720 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 18:14:44,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2857 states. [2020-01-16 18:14:44,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2857 to 1562. [2020-01-16 18:14:44,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1562 states. [2020-01-16 18:14:44,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1562 states to 1562 states and 7015 transitions. [2020-01-16 18:14:44,786 INFO L78 Accepts]: Start accepts. Automaton has 1562 states and 7015 transitions. Word has length 28 [2020-01-16 18:14:44,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:44,786 INFO L478 AbstractCegarLoop]: Abstraction has 1562 states and 7015 transitions. [2020-01-16 18:14:44,786 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:44,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1562 states and 7015 transitions. [2020-01-16 18:14:44,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:44,788 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:44,789 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:14:44,789 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 18:14:44,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:44,789 INFO L82 PathProgramCache]: Analyzing trace with hash -2058198224, now seen corresponding path program 883 times [2020-01-16 18:14:44,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:44,789 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474834250] [2020-01-16 18:14:44,789 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:44,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:45,320 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 18:14:45,320 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474834250] [2020-01-16 18:14:45,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:45,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:45,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249197176] [2020-01-16 18:14:45,320 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:45,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:45,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:45,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:45,321 INFO L87 Difference]: Start difference. First operand 1562 states and 7015 transitions. Second operand 11 states. [2020-01-16 18:14:45,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:45,497 INFO L93 Difference]: Finished difference Result 2889 states and 11476 transitions. [2020-01-16 18:14:45,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:45,497 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:45,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:45,504 INFO L225 Difference]: With dead ends: 2889 [2020-01-16 18:14:45,504 INFO L226 Difference]: Without dead ends: 2873 [2020-01-16 18:14:45,505 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 18:14:45,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2873 states. [2020-01-16 18:14:45,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2873 to 1573. [2020-01-16 18:14:45,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:14:45,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7042 transitions. [2020-01-16 18:14:45,570 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7042 transitions. Word has length 28 [2020-01-16 18:14:45,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:45,571 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7042 transitions. [2020-01-16 18:14:45,571 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:45,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7042 transitions. [2020-01-16 18:14:45,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:45,573 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:45,573 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:14:45,573 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 18:14:45,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:45,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1313495726, now seen corresponding path program 884 times [2020-01-16 18:14:45,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:45,573 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386154349] [2020-01-16 18:14:45,573 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:45,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:46,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:14:46,102 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386154349] [2020-01-16 18:14:46,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:46,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:46,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452531326] [2020-01-16 18:14:46,103 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:46,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:46,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:46,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:46,104 INFO L87 Difference]: Start difference. First operand 1573 states and 7042 transitions. Second operand 11 states. [2020-01-16 18:14:46,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:46,248 INFO L93 Difference]: Finished difference Result 2893 states and 11477 transitions. [2020-01-16 18:14:46,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:46,248 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:46,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:46,257 INFO L225 Difference]: With dead ends: 2893 [2020-01-16 18:14:46,257 INFO L226 Difference]: Without dead ends: 2866 [2020-01-16 18:14:46,257 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:14:46,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2866 states. [2020-01-16 18:14:46,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2866 to 1566. [2020-01-16 18:14:46,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1566 states. [2020-01-16 18:14:46,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 7025 transitions. [2020-01-16 18:14:46,323 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 7025 transitions. Word has length 28 [2020-01-16 18:14:46,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:46,323 INFO L478 AbstractCegarLoop]: Abstraction has 1566 states and 7025 transitions. [2020-01-16 18:14:46,323 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:46,323 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 7025 transitions. [2020-01-16 18:14:46,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:46,325 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:46,326 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:14:46,326 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 18:14:46,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:46,326 INFO L82 PathProgramCache]: Analyzing trace with hash -890584908, now seen corresponding path program 885 times [2020-01-16 18:14:46,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:46,326 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410243576] [2020-01-16 18:14:46,326 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:46,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:46,848 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 18:14:46,848 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410243576] [2020-01-16 18:14:46,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:46,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:46,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325787463] [2020-01-16 18:14:46,848 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:46,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:46,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:46,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:46,849 INFO L87 Difference]: Start difference. First operand 1566 states and 7025 transitions. Second operand 11 states. [2020-01-16 18:14:47,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:47,057 INFO L93 Difference]: Finished difference Result 2878 states and 11448 transitions. [2020-01-16 18:14:47,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:47,058 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:47,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:47,064 INFO L225 Difference]: With dead ends: 2878 [2020-01-16 18:14:47,065 INFO L226 Difference]: Without dead ends: 2862 [2020-01-16 18:14:47,065 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 18:14:47,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2862 states. [2020-01-16 18:14:47,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2862 to 1569. [2020-01-16 18:14:47,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:14:47,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7030 transitions. [2020-01-16 18:14:47,131 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7030 transitions. Word has length 28 [2020-01-16 18:14:47,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:47,131 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7030 transitions. [2020-01-16 18:14:47,131 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:47,131 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7030 transitions. [2020-01-16 18:14:47,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:47,134 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:47,134 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 18:14:47,134 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 18:14:47,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:47,134 INFO L82 PathProgramCache]: Analyzing trace with hash -298391824, now seen corresponding path program 886 times [2020-01-16 18:14:47,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:47,134 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834995838] [2020-01-16 18:14:47,134 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:47,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:47,661 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 18:14:47,662 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834995838] [2020-01-16 18:14:47,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:47,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:47,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148126412] [2020-01-16 18:14:47,662 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:47,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:47,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:47,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:47,662 INFO L87 Difference]: Start difference. First operand 1569 states and 7030 transitions. Second operand 11 states. [2020-01-16 18:14:47,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:47,877 INFO L93 Difference]: Finished difference Result 2875 states and 11439 transitions. [2020-01-16 18:14:47,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:47,878 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:47,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:47,884 INFO L225 Difference]: With dead ends: 2875 [2020-01-16 18:14:47,885 INFO L226 Difference]: Without dead ends: 2859 [2020-01-16 18:14:47,885 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:14:47,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2859 states. [2020-01-16 18:14:47,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2859 to 1566. [2020-01-16 18:14:47,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1566 states. [2020-01-16 18:14:47,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 7022 transitions. [2020-01-16 18:14:47,951 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 7022 transitions. Word has length 28 [2020-01-16 18:14:47,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:47,951 INFO L478 AbstractCegarLoop]: Abstraction has 1566 states and 7022 transitions. [2020-01-16 18:14:47,951 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:47,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 7022 transitions. [2020-01-16 18:14:47,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:47,953 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:47,953 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 18:14:47,953 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 18:14:47,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:47,953 INFO L82 PathProgramCache]: Analyzing trace with hash -135379306, now seen corresponding path program 887 times [2020-01-16 18:14:47,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:47,953 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11025239] [2020-01-16 18:14:47,954 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:47,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:48,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:14:48,462 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11025239] [2020-01-16 18:14:48,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:48,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:48,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473494609] [2020-01-16 18:14:48,463 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:48,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:48,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:48,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:48,463 INFO L87 Difference]: Start difference. First operand 1566 states and 7022 transitions. Second operand 11 states. [2020-01-16 18:14:48,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:48,670 INFO L93 Difference]: Finished difference Result 2887 states and 11461 transitions. [2020-01-16 18:14:48,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:48,671 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:48,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:48,678 INFO L225 Difference]: With dead ends: 2887 [2020-01-16 18:14:48,678 INFO L226 Difference]: Without dead ends: 2867 [2020-01-16 18:14:48,678 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:14:48,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2867 states. [2020-01-16 18:14:48,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2867 to 1570. [2020-01-16 18:14:48,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:14:48,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7028 transitions. [2020-01-16 18:14:48,744 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7028 transitions. Word has length 28 [2020-01-16 18:14:48,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:48,744 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7028 transitions. [2020-01-16 18:14:48,744 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:48,744 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7028 transitions. [2020-01-16 18:14:48,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:48,746 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:48,747 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:14:48,747 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 18:14:48,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:48,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1898829678, now seen corresponding path program 888 times [2020-01-16 18:14:48,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:48,747 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385482616] [2020-01-16 18:14:48,747 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:48,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:49,272 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 18:14:49,272 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385482616] [2020-01-16 18:14:49,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:49,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:49,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781607125] [2020-01-16 18:14:49,273 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:49,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:49,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:49,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:49,273 INFO L87 Difference]: Start difference. First operand 1570 states and 7028 transitions. Second operand 11 states. [2020-01-16 18:14:49,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:49,458 INFO L93 Difference]: Finished difference Result 2880 states and 11444 transitions. [2020-01-16 18:14:49,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:49,458 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:49,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:49,465 INFO L225 Difference]: With dead ends: 2880 [2020-01-16 18:14:49,466 INFO L226 Difference]: Without dead ends: 2855 [2020-01-16 18:14:49,466 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:14:49,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2855 states. [2020-01-16 18:14:49,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2855 to 1558. [2020-01-16 18:14:49,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1558 states. [2020-01-16 18:14:49,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 7004 transitions. [2020-01-16 18:14:49,532 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 7004 transitions. Word has length 28 [2020-01-16 18:14:49,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:49,532 INFO L478 AbstractCegarLoop]: Abstraction has 1558 states and 7004 transitions. [2020-01-16 18:14:49,532 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:49,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 7004 transitions. [2020-01-16 18:14:49,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:49,534 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:49,534 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:14:49,534 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 18:14:49,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:49,535 INFO L82 PathProgramCache]: Analyzing trace with hash 236053416, now seen corresponding path program 889 times [2020-01-16 18:14:49,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:49,535 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903497063] [2020-01-16 18:14:49,535 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:49,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:50,050 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 18:14:50,051 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903497063] [2020-01-16 18:14:50,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:50,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:50,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564461498] [2020-01-16 18:14:50,051 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:50,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:50,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:50,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:50,052 INFO L87 Difference]: Start difference. First operand 1558 states and 7004 transitions. Second operand 11 states. [2020-01-16 18:14:50,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:50,286 INFO L93 Difference]: Finished difference Result 2875 states and 11459 transitions. [2020-01-16 18:14:50,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:50,287 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:50,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:50,294 INFO L225 Difference]: With dead ends: 2875 [2020-01-16 18:14:50,294 INFO L226 Difference]: Without dead ends: 2860 [2020-01-16 18:14:50,294 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:14:50,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2860 states. [2020-01-16 18:14:50,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2860 to 1571. [2020-01-16 18:14:50,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:14:50,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7046 transitions. [2020-01-16 18:14:50,360 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7046 transitions. Word has length 28 [2020-01-16 18:14:50,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:50,360 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7046 transitions. [2020-01-16 18:14:50,360 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:50,360 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7046 transitions. [2020-01-16 18:14:50,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:50,363 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:50,363 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:14:50,363 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 18:14:50,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:50,363 INFO L82 PathProgramCache]: Analyzing trace with hash 980755914, now seen corresponding path program 890 times [2020-01-16 18:14:50,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:50,363 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033009016] [2020-01-16 18:14:50,363 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:50,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:50,905 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 18:14:50,906 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033009016] [2020-01-16 18:14:50,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:50,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:50,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149744846] [2020-01-16 18:14:50,906 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:50,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:50,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:50,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:50,907 INFO L87 Difference]: Start difference. First operand 1571 states and 7046 transitions. Second operand 11 states. [2020-01-16 18:14:51,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:51,120 INFO L93 Difference]: Finished difference Result 2876 states and 11456 transitions. [2020-01-16 18:14:51,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:51,120 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:51,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:51,127 INFO L225 Difference]: With dead ends: 2876 [2020-01-16 18:14:51,127 INFO L226 Difference]: Without dead ends: 2855 [2020-01-16 18:14:51,127 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 18:14:51,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2855 states. [2020-01-16 18:14:51,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2855 to 1566. [2020-01-16 18:14:51,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1566 states. [2020-01-16 18:14:51,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 7032 transitions. [2020-01-16 18:14:51,194 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 7032 transitions. Word has length 28 [2020-01-16 18:14:51,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:51,194 INFO L478 AbstractCegarLoop]: Abstraction has 1566 states and 7032 transitions. [2020-01-16 18:14:51,194 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:51,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 7032 transitions. [2020-01-16 18:14:51,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:51,196 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:51,196 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 18:14:51,196 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 18:14:51,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:51,197 INFO L82 PathProgramCache]: Analyzing trace with hash -837031964, now seen corresponding path program 891 times [2020-01-16 18:14:51,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:51,197 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764738430] [2020-01-16 18:14:51,197 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:51,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:51,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:14:51,694 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764738430] [2020-01-16 18:14:51,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:51,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:51,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462817591] [2020-01-16 18:14:51,695 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:51,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:51,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:51,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:51,695 INFO L87 Difference]: Start difference. First operand 1566 states and 7032 transitions. Second operand 11 states. [2020-01-16 18:14:51,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:51,958 INFO L93 Difference]: Finished difference Result 2877 states and 11458 transitions. [2020-01-16 18:14:51,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:51,958 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:51,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:51,966 INFO L225 Difference]: With dead ends: 2877 [2020-01-16 18:14:51,966 INFO L226 Difference]: Without dead ends: 2862 [2020-01-16 18:14:51,966 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 18:14:52,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2862 states. [2020-01-16 18:14:52,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2862 to 1571. [2020-01-16 18:14:52,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:14:52,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7041 transitions. [2020-01-16 18:14:52,032 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7041 transitions. Word has length 28 [2020-01-16 18:14:52,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:52,032 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7041 transitions. [2020-01-16 18:14:52,032 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:52,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7041 transitions. [2020-01-16 18:14:52,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:52,034 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:52,035 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 18:14:52,035 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 18:14:52,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:52,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1397075530, now seen corresponding path program 892 times [2020-01-16 18:14:52,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:52,035 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921006808] [2020-01-16 18:14:52,035 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:52,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:52,527 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 18:14:52,527 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921006808] [2020-01-16 18:14:52,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:52,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:52,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844389296] [2020-01-16 18:14:52,527 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:52,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:52,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:52,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:52,528 INFO L87 Difference]: Start difference. First operand 1571 states and 7041 transitions. Second operand 11 states. [2020-01-16 18:14:52,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:52,797 INFO L93 Difference]: Finished difference Result 2880 states and 11459 transitions. [2020-01-16 18:14:52,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:52,797 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:52,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:52,805 INFO L225 Difference]: With dead ends: 2880 [2020-01-16 18:14:52,805 INFO L226 Difference]: Without dead ends: 2857 [2020-01-16 18:14:52,805 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 18:14:52,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2857 states. [2020-01-16 18:14:52,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2857 to 1566. [2020-01-16 18:14:52,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1566 states. [2020-01-16 18:14:52,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 7027 transitions. [2020-01-16 18:14:52,871 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 7027 transitions. Word has length 28 [2020-01-16 18:14:52,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:52,871 INFO L478 AbstractCegarLoop]: Abstraction has 1566 states and 7027 transitions. [2020-01-16 18:14:52,872 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:52,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 7027 transitions. [2020-01-16 18:14:52,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:52,874 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:52,874 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:14:52,874 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 18:14:52,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:52,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1518611492, now seen corresponding path program 893 times [2020-01-16 18:14:52,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:52,874 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856930698] [2020-01-16 18:14:52,874 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:52,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:53,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:14:53,395 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856930698] [2020-01-16 18:14:53,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:53,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:53,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667999370] [2020-01-16 18:14:53,395 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:53,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:53,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:53,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:53,395 INFO L87 Difference]: Start difference. First operand 1566 states and 7027 transitions. Second operand 11 states. [2020-01-16 18:14:53,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:53,659 INFO L93 Difference]: Finished difference Result 2880 states and 11460 transitions. [2020-01-16 18:14:53,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:53,660 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:53,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:53,667 INFO L225 Difference]: With dead ends: 2880 [2020-01-16 18:14:53,667 INFO L226 Difference]: Without dead ends: 2864 [2020-01-16 18:14:53,667 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 18:14:53,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2864 states. [2020-01-16 18:14:53,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2864 to 1572. [2020-01-16 18:14:53,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:14:53,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7038 transitions. [2020-01-16 18:14:53,733 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7038 transitions. Word has length 28 [2020-01-16 18:14:53,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:53,733 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7038 transitions. [2020-01-16 18:14:53,733 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:53,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7038 transitions. [2020-01-16 18:14:53,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:53,735 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:53,735 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 18:14:53,735 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 18:14:53,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:53,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1286950808, now seen corresponding path program 894 times [2020-01-16 18:14:53,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:53,736 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095358104] [2020-01-16 18:14:53,736 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:53,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:54,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:14:54,246 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095358104] [2020-01-16 18:14:54,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:54,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:54,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383132749] [2020-01-16 18:14:54,246 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:54,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:54,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:54,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:54,247 INFO L87 Difference]: Start difference. First operand 1572 states and 7038 transitions. Second operand 11 states. [2020-01-16 18:14:54,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:54,513 INFO L93 Difference]: Finished difference Result 2882 states and 11458 transitions. [2020-01-16 18:14:54,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:54,514 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:54,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:54,520 INFO L225 Difference]: With dead ends: 2882 [2020-01-16 18:14:54,520 INFO L226 Difference]: Without dead ends: 2853 [2020-01-16 18:14:54,520 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:14:54,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2853 states. [2020-01-16 18:14:54,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2853 to 1561. [2020-01-16 18:14:54,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1561 states. [2020-01-16 18:14:54,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1561 states to 1561 states and 7015 transitions. [2020-01-16 18:14:54,586 INFO L78 Accepts]: Start accepts. Automaton has 1561 states and 7015 transitions. Word has length 28 [2020-01-16 18:14:54,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:54,586 INFO L478 AbstractCegarLoop]: Abstraction has 1561 states and 7015 transitions. [2020-01-16 18:14:54,586 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:54,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1561 states and 7015 transitions. [2020-01-16 18:14:54,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:54,588 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:54,589 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 18:14:54,589 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 18:14:54,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:54,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1746731620, now seen corresponding path program 895 times [2020-01-16 18:14:54,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:54,589 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880669937] [2020-01-16 18:14:54,589 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:54,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:55,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:14:55,104 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880669937] [2020-01-16 18:14:55,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:55,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:55,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613254105] [2020-01-16 18:14:55,104 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:55,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:55,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:55,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:55,105 INFO L87 Difference]: Start difference. First operand 1561 states and 7015 transitions. Second operand 11 states. [2020-01-16 18:14:55,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:55,377 INFO L93 Difference]: Finished difference Result 2863 states and 11423 transitions. [2020-01-16 18:14:55,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:55,377 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:55,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:55,384 INFO L225 Difference]: With dead ends: 2863 [2020-01-16 18:14:55,384 INFO L226 Difference]: Without dead ends: 2848 [2020-01-16 18:14:55,384 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 18:14:55,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2848 states. [2020-01-16 18:14:55,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2848 to 1569. [2020-01-16 18:14:55,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:14:55,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7035 transitions. [2020-01-16 18:14:55,451 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7035 transitions. Word has length 28 [2020-01-16 18:14:55,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:55,451 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7035 transitions. [2020-01-16 18:14:55,451 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:55,451 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7035 transitions. [2020-01-16 18:14:55,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:55,453 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:55,453 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 18:14:55,453 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 18:14:55,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:55,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1803533178, now seen corresponding path program 896 times [2020-01-16 18:14:55,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:55,454 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061578958] [2020-01-16 18:14:55,454 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:55,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:55,973 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 18:14:55,973 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061578958] [2020-01-16 18:14:55,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:55,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:55,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015479850] [2020-01-16 18:14:55,974 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:55,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:55,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:55,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:55,974 INFO L87 Difference]: Start difference. First operand 1569 states and 7035 transitions. Second operand 11 states. [2020-01-16 18:14:56,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:56,240 INFO L93 Difference]: Finished difference Result 2864 states and 11420 transitions. [2020-01-16 18:14:56,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:56,240 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:56,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:56,247 INFO L225 Difference]: With dead ends: 2864 [2020-01-16 18:14:56,247 INFO L226 Difference]: Without dead ends: 2843 [2020-01-16 18:14:56,247 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 18:14:56,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2843 states. [2020-01-16 18:14:56,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2843 to 1564. [2020-01-16 18:14:56,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1564 states. [2020-01-16 18:14:56,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 7023 transitions. [2020-01-16 18:14:56,312 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 7023 transitions. Word has length 28 [2020-01-16 18:14:56,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:56,312 INFO L478 AbstractCegarLoop]: Abstraction has 1564 states and 7023 transitions. [2020-01-16 18:14:56,312 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:56,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 7023 transitions. [2020-01-16 18:14:56,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:56,315 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:56,315 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 18:14:56,315 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 18:14:56,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:56,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1370119256, now seen corresponding path program 897 times [2020-01-16 18:14:56,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:56,315 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694430563] [2020-01-16 18:14:56,315 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:56,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:56,835 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 18:14:56,836 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694430563] [2020-01-16 18:14:56,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:56,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:56,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884189797] [2020-01-16 18:14:56,836 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:56,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:56,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:56,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:56,837 INFO L87 Difference]: Start difference. First operand 1564 states and 7023 transitions. Second operand 11 states. [2020-01-16 18:14:57,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:57,074 INFO L93 Difference]: Finished difference Result 2858 states and 11408 transitions. [2020-01-16 18:14:57,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:57,074 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:57,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:57,081 INFO L225 Difference]: With dead ends: 2858 [2020-01-16 18:14:57,081 INFO L226 Difference]: Without dead ends: 2843 [2020-01-16 18:14:57,081 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:14:57,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2843 states. [2020-01-16 18:14:57,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2843 to 1567. [2020-01-16 18:14:57,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:14:57,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7028 transitions. [2020-01-16 18:14:57,147 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7028 transitions. Word has length 28 [2020-01-16 18:14:57,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:57,147 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7028 transitions. [2020-01-16 18:14:57,147 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:57,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7028 transitions. [2020-01-16 18:14:57,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:57,149 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:57,149 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 18:14:57,150 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 18:14:57,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:57,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1577717284, now seen corresponding path program 898 times [2020-01-16 18:14:57,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:57,150 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467249883] [2020-01-16 18:14:57,150 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:57,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:57,670 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 18:14:57,671 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467249883] [2020-01-16 18:14:57,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:57,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:57,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914152152] [2020-01-16 18:14:57,671 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:57,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:57,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:57,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:57,671 INFO L87 Difference]: Start difference. First operand 1567 states and 7028 transitions. Second operand 11 states. [2020-01-16 18:14:57,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:57,890 INFO L93 Difference]: Finished difference Result 2856 states and 11401 transitions. [2020-01-16 18:14:57,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:57,891 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:57,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:57,897 INFO L225 Difference]: With dead ends: 2856 [2020-01-16 18:14:57,897 INFO L226 Difference]: Without dead ends: 2840 [2020-01-16 18:14:57,897 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:14:57,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2840 states. [2020-01-16 18:14:57,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2840 to 1564. [2020-01-16 18:14:57,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1564 states. [2020-01-16 18:14:57,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 7020 transitions. [2020-01-16 18:14:57,965 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 7020 transitions. Word has length 28 [2020-01-16 18:14:57,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:57,965 INFO L478 AbstractCegarLoop]: Abstraction has 1564 states and 7020 transitions. [2020-01-16 18:14:57,965 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:57,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 7020 transitions. [2020-01-16 18:14:57,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:57,968 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:57,968 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 18:14:57,968 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 18:14:57,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:57,968 INFO L82 PathProgramCache]: Analyzing trace with hash -614913654, now seen corresponding path program 899 times [2020-01-16 18:14:57,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:57,968 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138907108] [2020-01-16 18:14:57,968 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:57,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:58,476 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 18:14:58,477 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138907108] [2020-01-16 18:14:58,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:58,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:58,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241329157] [2020-01-16 18:14:58,477 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:58,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:58,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:58,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:58,478 INFO L87 Difference]: Start difference. First operand 1564 states and 7020 transitions. Second operand 11 states. [2020-01-16 18:14:58,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:58,677 INFO L93 Difference]: Finished difference Result 2860 states and 11409 transitions. [2020-01-16 18:14:58,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:58,678 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:58,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:58,685 INFO L225 Difference]: With dead ends: 2860 [2020-01-16 18:14:58,685 INFO L226 Difference]: Without dead ends: 2844 [2020-01-16 18:14:58,686 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 18:14:58,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2844 states. [2020-01-16 18:14:58,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2844 to 1567. [2020-01-16 18:14:58,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:14:58,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7025 transitions. [2020-01-16 18:14:58,754 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7025 transitions. Word has length 28 [2020-01-16 18:14:58,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:58,754 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7025 transitions. [2020-01-16 18:14:58,754 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:58,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7025 transitions. [2020-01-16 18:14:58,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:58,757 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:58,757 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:14:58,757 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 18:14:58,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:58,757 INFO L82 PathProgramCache]: Analyzing trace with hash -22720570, now seen corresponding path program 900 times [2020-01-16 18:14:58,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:58,757 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541851741] [2020-01-16 18:14:58,757 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:58,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:14:59,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:14:59,263 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541851741] [2020-01-16 18:14:59,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:14:59,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:14:59,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130903231] [2020-01-16 18:14:59,263 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:14:59,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:14:59,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:14:59,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:14:59,264 INFO L87 Difference]: Start difference. First operand 1567 states and 7025 transitions. Second operand 11 states. [2020-01-16 18:14:59,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:14:59,538 INFO L93 Difference]: Finished difference Result 2857 states and 11400 transitions. [2020-01-16 18:14:59,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:14:59,538 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:14:59,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:14:59,545 INFO L225 Difference]: With dead ends: 2857 [2020-01-16 18:14:59,546 INFO L226 Difference]: Without dead ends: 2838 [2020-01-16 18:14:59,546 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:14:59,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2838 states. [2020-01-16 18:14:59,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2838 to 1561. [2020-01-16 18:14:59,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1561 states. [2020-01-16 18:14:59,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1561 states to 1561 states and 7012 transitions. [2020-01-16 18:14:59,614 INFO L78 Accepts]: Start accepts. Automaton has 1561 states and 7012 transitions. Word has length 28 [2020-01-16 18:14:59,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:14:59,614 INFO L478 AbstractCegarLoop]: Abstraction has 1561 states and 7012 transitions. [2020-01-16 18:14:59,614 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:14:59,614 INFO L276 IsEmpty]: Start isEmpty. Operand 1561 states and 7012 transitions. [2020-01-16 18:14:59,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:14:59,616 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:14:59,616 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 18:14:59,616 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 18:14:59,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:14:59,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1324838688, now seen corresponding path program 901 times [2020-01-16 18:14:59,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:14:59,617 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591874007] [2020-01-16 18:14:59,617 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:14:59,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:15:00,124 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 18:15:00,124 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591874007] [2020-01-16 18:15:00,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:15:00,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:15:00,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683060756] [2020-01-16 18:15:00,124 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:15:00,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:15:00,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:15:00,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:15:00,125 INFO L87 Difference]: Start difference. First operand 1561 states and 7012 transitions. Second operand 11 states. [2020-01-16 18:15:00,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:15:00,335 INFO L93 Difference]: Finished difference Result 2867 states and 11428 transitions. [2020-01-16 18:15:00,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:15:00,336 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:15:00,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:15:00,343 INFO L225 Difference]: With dead ends: 2867 [2020-01-16 18:15:00,343 INFO L226 Difference]: Without dead ends: 2852 [2020-01-16 18:15:00,343 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:15:00,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2852 states. [2020-01-16 18:15:00,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2852 to 1569. [2020-01-16 18:15:00,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:15:00,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7032 transitions. [2020-01-16 18:15:00,409 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7032 transitions. Word has length 28 [2020-01-16 18:15:00,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:15:00,409 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7032 transitions. [2020-01-16 18:15:00,409 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:15:00,409 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7032 transitions. [2020-01-16 18:15:00,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:15:00,412 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:15:00,412 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 18:15:00,412 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 18:15:00,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:15:00,412 INFO L82 PathProgramCache]: Analyzing trace with hash -736021114, now seen corresponding path program 902 times [2020-01-16 18:15:00,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:15:00,412 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201224036] [2020-01-16 18:15:00,412 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:15:00,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:15:00,909 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 18:15:00,909 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201224036] [2020-01-16 18:15:00,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:15:00,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:15:00,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116380702] [2020-01-16 18:15:00,910 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:15:00,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:15:00,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:15:00,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:15:00,910 INFO L87 Difference]: Start difference. First operand 1569 states and 7032 transitions. Second operand 11 states. [2020-01-16 18:15:01,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:15:01,100 INFO L93 Difference]: Finished difference Result 2870 states and 11429 transitions. [2020-01-16 18:15:01,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:15:01,101 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:15:01,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:15:01,107 INFO L225 Difference]: With dead ends: 2870 [2020-01-16 18:15:01,107 INFO L226 Difference]: Without dead ends: 2847 [2020-01-16 18:15:01,107 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:15:01,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2847 states. [2020-01-16 18:15:01,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2847 to 1564. [2020-01-16 18:15:01,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1564 states. [2020-01-16 18:15:01,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 7020 transitions. [2020-01-16 18:15:01,174 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 7020 transitions. Word has length 28 [2020-01-16 18:15:01,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:15:01,174 INFO L478 AbstractCegarLoop]: Abstraction has 1564 states and 7020 transitions. [2020-01-16 18:15:01,175 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:15:01,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 7020 transitions. [2020-01-16 18:15:01,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:15:01,177 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:15:01,177 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:15:01,177 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 18:15:01,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:15:01,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1813018396, now seen corresponding path program 903 times [2020-01-16 18:15:01,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:15:01,177 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340123654] [2020-01-16 18:15:01,177 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:15:01,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:15:01,686 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 18:15:01,687 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340123654] [2020-01-16 18:15:01,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:15:01,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:15:01,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906468621] [2020-01-16 18:15:01,687 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:15:01,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:15:01,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:15:01,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:15:01,688 INFO L87 Difference]: Start difference. First operand 1564 states and 7020 transitions. Second operand 11 states. [2020-01-16 18:15:01,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:15:01,865 INFO L93 Difference]: Finished difference Result 2860 states and 11409 transitions. [2020-01-16 18:15:01,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:15:01,866 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:15:01,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:15:01,873 INFO L225 Difference]: With dead ends: 2860 [2020-01-16 18:15:01,873 INFO L226 Difference]: Without dead ends: 2845 [2020-01-16 18:15:01,873 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 18:15:01,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2845 states. [2020-01-16 18:15:01,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2845 to 1567. [2020-01-16 18:15:01,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:15:01,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7025 transitions. [2020-01-16 18:15:01,939 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7025 transitions. Word has length 28 [2020-01-16 18:15:01,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:15:01,939 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7025 transitions. [2020-01-16 18:15:01,939 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:15:01,939 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7025 transitions. [2020-01-16 18:15:01,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:15:01,941 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:15:01,942 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 18:15:01,942 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 18:15:01,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:15:01,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1134818144, now seen corresponding path program 904 times [2020-01-16 18:15:01,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:15:01,942 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570883065] [2020-01-16 18:15:01,942 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:15:01,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:15:02,443 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 18:15:02,443 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570883065] [2020-01-16 18:15:02,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:15:02,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:15:02,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659160984] [2020-01-16 18:15:02,444 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:15:02,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:15:02,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:15:02,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:15:02,444 INFO L87 Difference]: Start difference. First operand 1567 states and 7025 transitions. Second operand 11 states. [2020-01-16 18:15:02,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:15:02,629 INFO L93 Difference]: Finished difference Result 2858 states and 11402 transitions. [2020-01-16 18:15:02,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:15:02,629 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:15:02,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:15:02,637 INFO L225 Difference]: With dead ends: 2858 [2020-01-16 18:15:02,637 INFO L226 Difference]: Without dead ends: 2842 [2020-01-16 18:15:02,637 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 18:15:02,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2020-01-16 18:15:02,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1564. [2020-01-16 18:15:02,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1564 states. [2020-01-16 18:15:02,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 7017 transitions. [2020-01-16 18:15:02,705 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 7017 transitions. Word has length 28 [2020-01-16 18:15:02,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:15:02,705 INFO L478 AbstractCegarLoop]: Abstraction has 1564 states and 7017 transitions. [2020-01-16 18:15:02,705 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:15:02,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 7017 transitions. [2020-01-16 18:15:02,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:15:02,707 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:15:02,707 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:15:02,707 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 18:15:02,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:15:02,707 INFO L82 PathProgramCache]: Analyzing trace with hash 452598410, now seen corresponding path program 905 times [2020-01-16 18:15:02,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:15:02,708 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396026869] [2020-01-16 18:15:02,708 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:15:02,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:15:03,212 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 18:15:03,212 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396026869] [2020-01-16 18:15:03,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:15:03,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:15:03,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006972759] [2020-01-16 18:15:03,212 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:15:03,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:15:03,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:15:03,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:15:03,213 INFO L87 Difference]: Start difference. First operand 1564 states and 7017 transitions. Second operand 11 states. [2020-01-16 18:15:03,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:15:03,412 INFO L93 Difference]: Finished difference Result 2866 states and 11418 transitions. [2020-01-16 18:15:03,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:15:03,413 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:15:03,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:15:03,420 INFO L225 Difference]: With dead ends: 2866 [2020-01-16 18:15:03,420 INFO L226 Difference]: Without dead ends: 2848 [2020-01-16 18:15:03,420 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 18:15:03,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2848 states. [2020-01-16 18:15:03,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2848 to 1567. [2020-01-16 18:15:03,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:15:03,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7022 transitions. [2020-01-16 18:15:03,485 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7022 transitions. Word has length 28 [2020-01-16 18:15:03,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:15:03,485 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7022 transitions. [2020-01-16 18:15:03,485 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:15:03,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7022 transitions. [2020-01-16 18:15:03,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:15:03,488 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:15:03,488 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 18:15:03,488 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 18:15:03,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:15:03,488 INFO L82 PathProgramCache]: Analyzing trace with hash 628471878, now seen corresponding path program 906 times [2020-01-16 18:15:03,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:15:03,488 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402406188] [2020-01-16 18:15:03,488 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:15:03,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:15:03,968 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 18:15:03,968 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402406188] [2020-01-16 18:15:03,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:15:03,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:15:03,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632601451] [2020-01-16 18:15:03,968 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:15:03,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:15:03,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:15:03,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:15:03,969 INFO L87 Difference]: Start difference. First operand 1567 states and 7022 transitions. Second operand 11 states. [2020-01-16 18:15:04,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:15:04,163 INFO L93 Difference]: Finished difference Result 2861 states and 11405 transitions. [2020-01-16 18:15:04,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:15:04,163 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:15:04,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:15:04,170 INFO L225 Difference]: With dead ends: 2861 [2020-01-16 18:15:04,171 INFO L226 Difference]: Without dead ends: 2842 [2020-01-16 18:15:04,171 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 18:15:04,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2020-01-16 18:15:04,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1561. [2020-01-16 18:15:04,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1561 states. [2020-01-16 18:15:04,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1561 states to 1561 states and 7009 transitions. [2020-01-16 18:15:04,236 INFO L78 Accepts]: Start accepts. Automaton has 1561 states and 7009 transitions. Word has length 28 [2020-01-16 18:15:04,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:15:04,236 INFO L478 AbstractCegarLoop]: Abstraction has 1561 states and 7009 transitions. [2020-01-16 18:15:04,236 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:15:04,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1561 states and 7009 transitions. [2020-01-16 18:15:04,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:15:04,239 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:15:04,239 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 18:15:04,239 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 18:15:04,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:15:04,239 INFO L82 PathProgramCache]: Analyzing trace with hash -288888928, now seen corresponding path program 907 times [2020-01-16 18:15:04,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:15:04,239 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494012272] [2020-01-16 18:15:04,239 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:15:04,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:15:04,729 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 18:15:04,729 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494012272] [2020-01-16 18:15:04,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:15:04,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:15:04,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421855776] [2020-01-16 18:15:04,729 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:15:04,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:15:04,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:15:04,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:15:04,730 INFO L87 Difference]: Start difference. First operand 1561 states and 7009 transitions. Second operand 11 states. [2020-01-16 18:15:04,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:15:04,899 INFO L93 Difference]: Finished difference Result 2872 states and 11437 transitions. [2020-01-16 18:15:04,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:15:04,899 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:15:04,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:15:04,907 INFO L225 Difference]: With dead ends: 2872 [2020-01-16 18:15:04,907 INFO L226 Difference]: Without dead ends: 2856 [2020-01-16 18:15:04,907 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 18:15:04,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2856 states. [2020-01-16 18:15:04,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2856 to 1570. [2020-01-16 18:15:04,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:15:04,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7031 transitions. [2020-01-16 18:15:04,973 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7031 transitions. Word has length 28 [2020-01-16 18:15:04,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:15:04,973 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7031 transitions. [2020-01-16 18:15:04,973 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:15:04,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7031 transitions. [2020-01-16 18:15:04,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:15:04,975 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:15:04,975 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 18:15:04,975 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 18:15:04,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:15:04,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1200516068, now seen corresponding path program 908 times [2020-01-16 18:15:04,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:15:04,976 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374950732] [2020-01-16 18:15:04,976 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:15:04,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:15:05,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:15:05,473 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374950732] [2020-01-16 18:15:05,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:15:05,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:15:05,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057291146] [2020-01-16 18:15:05,473 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:15:05,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:15:05,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:15:05,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:15:05,474 INFO L87 Difference]: Start difference. First operand 1570 states and 7031 transitions. Second operand 11 states. [2020-01-16 18:15:05,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:15:05,642 INFO L93 Difference]: Finished difference Result 2874 states and 11435 transitions. [2020-01-16 18:15:05,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:15:05,642 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:15:05,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:15:05,650 INFO L225 Difference]: With dead ends: 2874 [2020-01-16 18:15:05,650 INFO L226 Difference]: Without dead ends: 2850 [2020-01-16 18:15:05,650 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 18:15:05,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2850 states. [2020-01-16 18:15:05,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2850 to 1564. [2020-01-16 18:15:05,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1564 states. [2020-01-16 18:15:05,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 7017 transitions. [2020-01-16 18:15:05,716 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 7017 transitions. Word has length 28 [2020-01-16 18:15:05,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:15:05,716 INFO L478 AbstractCegarLoop]: Abstraction has 1564 states and 7017 transitions. [2020-01-16 18:15:05,716 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:15:05,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 7017 transitions. [2020-01-16 18:15:05,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:15:05,718 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:15:05,718 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 18:15:05,718 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 18:15:05,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:15:05,718 INFO L82 PathProgramCache]: Analyzing trace with hash 868221284, now seen corresponding path program 909 times [2020-01-16 18:15:05,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:15:05,719 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862437721] [2020-01-16 18:15:05,719 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:15:05,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:15:06,219 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 18:15:06,219 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862437721] [2020-01-16 18:15:06,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:15:06,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:15:06,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245823146] [2020-01-16 18:15:06,219 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:15:06,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:15:06,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:15:06,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:15:06,220 INFO L87 Difference]: Start difference. First operand 1564 states and 7017 transitions. Second operand 11 states. [2020-01-16 18:15:06,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:15:06,399 INFO L93 Difference]: Finished difference Result 2864 states and 11415 transitions. [2020-01-16 18:15:06,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:15:06,399 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:15:06,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:15:06,407 INFO L225 Difference]: With dead ends: 2864 [2020-01-16 18:15:06,407 INFO L226 Difference]: Without dead ends: 2848 [2020-01-16 18:15:06,408 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:15:06,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2848 states. [2020-01-16 18:15:06,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2848 to 1567. [2020-01-16 18:15:06,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:15:06,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7022 transitions. [2020-01-16 18:15:06,474 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7022 transitions. Word has length 28 [2020-01-16 18:15:06,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:15:06,474 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7022 transitions. [2020-01-16 18:15:06,474 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:15:06,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7022 transitions. [2020-01-16 18:15:06,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:15:06,476 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:15:06,476 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 18:15:06,476 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 18:15:06,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:15:06,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1460414368, now seen corresponding path program 910 times [2020-01-16 18:15:06,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:15:06,477 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639450076] [2020-01-16 18:15:06,477 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:15:06,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:15:06,997 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 18:15:06,998 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639450076] [2020-01-16 18:15:06,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:15:06,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:15:06,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175276697] [2020-01-16 18:15:06,998 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:15:06,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:15:06,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:15:06,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:15:06,999 INFO L87 Difference]: Start difference. First operand 1567 states and 7022 transitions. Second operand 11 states. [2020-01-16 18:15:07,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:15:07,208 INFO L93 Difference]: Finished difference Result 2861 states and 11406 transitions. [2020-01-16 18:15:07,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:15:07,208 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:15:07,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:15:07,215 INFO L225 Difference]: With dead ends: 2861 [2020-01-16 18:15:07,215 INFO L226 Difference]: Without dead ends: 2845 [2020-01-16 18:15:07,215 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:15:07,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2845 states. [2020-01-16 18:15:07,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2845 to 1564. [2020-01-16 18:15:07,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1564 states. [2020-01-16 18:15:07,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 7014 transitions. [2020-01-16 18:15:07,282 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 7014 transitions. Word has length 28 [2020-01-16 18:15:07,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:15:07,282 INFO L478 AbstractCegarLoop]: Abstraction has 1564 states and 7014 transitions. [2020-01-16 18:15:07,282 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:15:07,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 7014 transitions. [2020-01-16 18:15:07,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:15:07,284 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:15:07,284 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 18:15:07,284 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 18:15:07,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:15:07,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1916334808, now seen corresponding path program 911 times [2020-01-16 18:15:07,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:15:07,285 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137469733] [2020-01-16 18:15:07,285 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:15:07,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:15:07,800 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 18:15:07,800 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137469733] [2020-01-16 18:15:07,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:15:07,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:15:07,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845067686] [2020-01-16 18:15:07,801 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:15:07,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:15:07,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:15:07,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:15:07,801 INFO L87 Difference]: Start difference. First operand 1564 states and 7014 transitions. Second operand 11 states. [2020-01-16 18:15:07,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:15:07,990 INFO L93 Difference]: Finished difference Result 2868 states and 11420 transitions. [2020-01-16 18:15:07,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:15:07,990 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:15:07,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:15:07,998 INFO L225 Difference]: With dead ends: 2868 [2020-01-16 18:15:07,998 INFO L226 Difference]: Without dead ends: 2850 [2020-01-16 18:15:07,998 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 18:15:08,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2850 states. [2020-01-16 18:15:08,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2850 to 1567. [2020-01-16 18:15:08,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:15:08,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7019 transitions. [2020-01-16 18:15:08,064 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7019 transitions. Word has length 28 [2020-01-16 18:15:08,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:15:08,065 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7019 transitions. [2020-01-16 18:15:08,065 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:15:08,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7019 transitions. [2020-01-16 18:15:08,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:15:08,067 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:15:08,067 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 18:15:08,067 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 18:15:08,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:15:08,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1740461340, now seen corresponding path program 912 times [2020-01-16 18:15:08,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:15:08,067 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417820127] [2020-01-16 18:15:08,068 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:15:08,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:15:08,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:15:08,571 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417820127] [2020-01-16 18:15:08,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:15:08,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:15:08,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551588192] [2020-01-16 18:15:08,571 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:15:08,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:15:08,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:15:08,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:15:08,571 INFO L87 Difference]: Start difference. First operand 1567 states and 7019 transitions. Second operand 11 states. [2020-01-16 18:15:08,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:15:08,761 INFO L93 Difference]: Finished difference Result 2863 states and 11407 transitions. [2020-01-16 18:15:08,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:15:08,761 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:15:08,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:15:08,767 INFO L225 Difference]: With dead ends: 2863 [2020-01-16 18:15:08,767 INFO L226 Difference]: Without dead ends: 2841 [2020-01-16 18:15:08,768 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 18:15:08,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2841 states. [2020-01-16 18:15:08,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2841 to 1558. [2020-01-16 18:15:08,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1558 states. [2020-01-16 18:15:08,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 7001 transitions. [2020-01-16 18:15:08,830 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 7001 transitions. Word has length 28 [2020-01-16 18:15:08,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:15:08,830 INFO L478 AbstractCegarLoop]: Abstraction has 1558 states and 7001 transitions. [2020-01-16 18:15:08,830 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:15:08,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 7001 transitions. [2020-01-16 18:15:08,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:15:08,832 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:15:08,832 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:15:08,832 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 18:15:08,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:15:08,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1750104872, now seen corresponding path program 913 times [2020-01-16 18:15:08,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:15:08,832 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522648418] [2020-01-16 18:15:08,832 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:15:08,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:15:09,343 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 18:15:09,343 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522648418] [2020-01-16 18:15:09,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:15:09,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:15:09,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040206665] [2020-01-16 18:15:09,344 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:15:09,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:15:09,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:15:09,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:15:09,344 INFO L87 Difference]: Start difference. First operand 1558 states and 7001 transitions. Second operand 11 states. [2020-01-16 18:15:09,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:15:09,502 INFO L93 Difference]: Finished difference Result 2908 states and 11528 transitions. [2020-01-16 18:15:09,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:15:09,503 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:15:09,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:15:09,509 INFO L225 Difference]: With dead ends: 2908 [2020-01-16 18:15:09,509 INFO L226 Difference]: Without dead ends: 2893 [2020-01-16 18:15:09,509 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:15:09,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2893 states. [2020-01-16 18:15:09,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2893 to 1576. [2020-01-16 18:15:09,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-01-16 18:15:09,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 7057 transitions. [2020-01-16 18:15:09,572 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 7057 transitions. Word has length 28 [2020-01-16 18:15:09,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:15:09,573 INFO L478 AbstractCegarLoop]: Abstraction has 1576 states and 7057 transitions. [2020-01-16 18:15:09,573 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:15:09,573 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 7057 transitions. [2020-01-16 18:15:09,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:15:09,575 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:15:09,575 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 18:15:09,575 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 18:15:09,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:15:09,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1055457428, now seen corresponding path program 914 times [2020-01-16 18:15:09,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:15:09,575 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519162333] [2020-01-16 18:15:09,575 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:15:09,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:15:10,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:15:10,068 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519162333] [2020-01-16 18:15:10,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:15:10,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:15:10,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623335409] [2020-01-16 18:15:10,069 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:15:10,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:15:10,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:15:10,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:15:10,069 INFO L87 Difference]: Start difference. First operand 1576 states and 7057 transitions. Second operand 11 states. [2020-01-16 18:15:10,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:15:10,234 INFO L93 Difference]: Finished difference Result 2913 states and 11532 transitions. [2020-01-16 18:15:10,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:15:10,235 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:15:10,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:15:10,242 INFO L225 Difference]: With dead ends: 2913 [2020-01-16 18:15:10,242 INFO L226 Difference]: Without dead ends: 2887 [2020-01-16 18:15:10,242 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:15:10,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2887 states. [2020-01-16 18:15:10,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2887 to 1570. [2020-01-16 18:15:10,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:15:10,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7040 transitions. [2020-01-16 18:15:10,305 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7040 transitions. Word has length 28 [2020-01-16 18:15:10,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:15:10,305 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7040 transitions. [2020-01-16 18:15:10,305 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:15:10,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7040 transitions. [2020-01-16 18:15:10,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:15:10,307 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:15:10,307 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 18:15:10,307 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 18:15:10,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:15:10,307 INFO L82 PathProgramCache]: Analyzing trace with hash -933921466, now seen corresponding path program 915 times [2020-01-16 18:15:10,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:15:10,308 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84127743] [2020-01-16 18:15:10,308 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:15:10,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:15:10,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:15:10,799 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84127743] [2020-01-16 18:15:10,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:15:10,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:15:10,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511748257] [2020-01-16 18:15:10,800 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:15:10,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:15:10,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:15:10,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:15:10,800 INFO L87 Difference]: Start difference. First operand 1570 states and 7040 transitions. Second operand 11 states. [2020-01-16 18:15:10,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:15:10,977 INFO L93 Difference]: Finished difference Result 2905 states and 11517 transitions. [2020-01-16 18:15:10,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:15:10,977 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:15:10,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:15:10,983 INFO L225 Difference]: With dead ends: 2905 [2020-01-16 18:15:10,983 INFO L226 Difference]: Without dead ends: 2890 [2020-01-16 18:15:10,984 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 18:15:11,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2890 states. [2020-01-16 18:15:11,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2890 to 1575. [2020-01-16 18:15:11,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2020-01-16 18:15:11,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 7049 transitions. [2020-01-16 18:15:11,047 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 7049 transitions. Word has length 28 [2020-01-16 18:15:11,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:15:11,047 INFO L478 AbstractCegarLoop]: Abstraction has 1575 states and 7049 transitions. [2020-01-16 18:15:11,047 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:15:11,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 7049 transitions. [2020-01-16 18:15:11,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:15:11,049 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:15:11,049 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 18:15:11,049 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 18:15:11,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:15:11,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1300186028, now seen corresponding path program 916 times [2020-01-16 18:15:11,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:15:11,050 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922547401] [2020-01-16 18:15:11,050 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:15:11,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:15:11,534 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 18:15:11,535 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922547401] [2020-01-16 18:15:11,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:15:11,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:15:11,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18416113] [2020-01-16 18:15:11,535 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:15:11,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:15:11,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:15:11,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:15:11,535 INFO L87 Difference]: Start difference. First operand 1575 states and 7049 transitions. Second operand 11 states. [2020-01-16 18:15:11,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:15:11,702 INFO L93 Difference]: Finished difference Result 2908 states and 11518 transitions. [2020-01-16 18:15:11,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:15:11,703 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:15:11,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:15:11,710 INFO L225 Difference]: With dead ends: 2908 [2020-01-16 18:15:11,710 INFO L226 Difference]: Without dead ends: 2885 [2020-01-16 18:15:11,710 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 18:15:11,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2885 states. [2020-01-16 18:15:11,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2885 to 1570. [2020-01-16 18:15:11,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:15:11,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7035 transitions. [2020-01-16 18:15:11,773 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7035 transitions. Word has length 28 [2020-01-16 18:15:11,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:15:11,773 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7035 transitions. [2020-01-16 18:15:11,773 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:15:11,773 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7035 transitions. [2020-01-16 18:15:11,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:15:11,775 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:15:11,775 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 18:15:11,775 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 18:15:11,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:15:11,775 INFO L82 PathProgramCache]: Analyzing trace with hash -517601850, now seen corresponding path program 917 times [2020-01-16 18:15:11,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:15:11,775 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757659478] [2020-01-16 18:15:11,775 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:15:11,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:15:12,275 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 18:15:12,275 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757659478] [2020-01-16 18:15:12,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:15:12,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:15:12,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517577489] [2020-01-16 18:15:12,276 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:15:12,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:15:12,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:15:12,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:15:12,276 INFO L87 Difference]: Start difference. First operand 1570 states and 7035 transitions. Second operand 11 states. [2020-01-16 18:15:12,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:15:12,409 INFO L93 Difference]: Finished difference Result 2920 states and 11542 transitions. [2020-01-16 18:15:12,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:15:12,410 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:15:12,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:15:12,416 INFO L225 Difference]: With dead ends: 2920 [2020-01-16 18:15:12,416 INFO L226 Difference]: Without dead ends: 2900 [2020-01-16 18:15:12,416 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 18:15:12,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2900 states. [2020-01-16 18:15:12,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2900 to 1580. [2020-01-16 18:15:12,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-01-16 18:15:12,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 7052 transitions. [2020-01-16 18:15:12,480 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 7052 transitions. Word has length 28 [2020-01-16 18:15:12,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:15:12,480 INFO L478 AbstractCegarLoop]: Abstraction has 1580 states and 7052 transitions. [2020-01-16 18:15:12,480 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:15:12,480 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 7052 transitions. [2020-01-16 18:15:12,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:15:12,482 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:15:12,482 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:15:12,482 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 18:15:12,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:15:12,482 INFO L82 PathProgramCache]: Analyzing trace with hash 227100648, now seen corresponding path program 918 times [2020-01-16 18:15:12,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:15:12,483 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542297364] [2020-01-16 18:15:12,483 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:15:12,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:15:12,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:15:12,977 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542297364] [2020-01-16 18:15:12,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:15:12,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:15:12,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191013008] [2020-01-16 18:15:12,977 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:15:12,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:15:12,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:15:12,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:15:12,977 INFO L87 Difference]: Start difference. First operand 1580 states and 7052 transitions. Second operand 11 states. [2020-01-16 18:15:13,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:15:13,172 INFO L93 Difference]: Finished difference Result 2918 states and 11530 transitions. [2020-01-16 18:15:13,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:15:13,173 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:15:13,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:15:13,179 INFO L225 Difference]: With dead ends: 2918 [2020-01-16 18:15:13,179 INFO L226 Difference]: Without dead ends: 2883 [2020-01-16 18:15:13,179 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:15:13,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2883 states. [2020-01-16 18:15:13,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2883 to 1563. [2020-01-16 18:15:13,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 18:15:13,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7017 transitions. [2020-01-16 18:15:13,243 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7017 transitions. Word has length 28 [2020-01-16 18:15:13,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:15:13,243 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7017 transitions. [2020-01-16 18:15:13,243 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:15:13,243 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7017 transitions. [2020-01-16 18:15:13,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:15:13,245 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:15:13,245 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 18:15:13,245 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 18:15:13,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:15:13,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1034184220, now seen corresponding path program 919 times [2020-01-16 18:15:13,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:15:13,246 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179926120] [2020-01-16 18:15:13,246 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:15:13,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:15:13,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:15:13,717 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179926120] [2020-01-16 18:15:13,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:15:13,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:15:13,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130601532] [2020-01-16 18:15:13,717 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:15:13,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:15:13,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:15:13,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:15:13,718 INFO L87 Difference]: Start difference. First operand 1563 states and 7017 transitions. Second operand 11 states. [2020-01-16 18:15:13,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:15:13,882 INFO L93 Difference]: Finished difference Result 2892 states and 11481 transitions. [2020-01-16 18:15:13,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:15:13,882 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:15:13,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:15:13,889 INFO L225 Difference]: With dead ends: 2892 [2020-01-16 18:15:13,889 INFO L226 Difference]: Without dead ends: 2877 [2020-01-16 18:15:13,889 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:15:13,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2877 states. [2020-01-16 18:15:13,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2877 to 1573. [2020-01-16 18:15:13,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-01-16 18:15:13,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 7042 transitions. [2020-01-16 18:15:13,952 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 7042 transitions. Word has length 28 [2020-01-16 18:15:13,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:15:13,952 INFO L478 AbstractCegarLoop]: Abstraction has 1573 states and 7042 transitions. [2020-01-16 18:15:13,952 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:15:13,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 7042 transitions. [2020-01-16 18:15:13,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:15:13,954 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:15:13,954 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 18:15:13,954 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 18:15:13,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:15:13,955 INFO L82 PathProgramCache]: Analyzing trace with hash 455220776, now seen corresponding path program 920 times [2020-01-16 18:15:13,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:15:13,955 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506265677] [2020-01-16 18:15:13,955 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:15:13,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:15:14,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:15:14,453 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506265677] [2020-01-16 18:15:14,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:15:14,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:15:14,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902820707] [2020-01-16 18:15:14,454 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:15:14,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:15:14,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:15:14,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:15:14,454 INFO L87 Difference]: Start difference. First operand 1573 states and 7042 transitions. Second operand 11 states. [2020-01-16 18:15:14,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:15:14,586 INFO L93 Difference]: Finished difference Result 2897 states and 11485 transitions. [2020-01-16 18:15:14,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:15:14,587 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:15:14,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:15:14,593 INFO L225 Difference]: With dead ends: 2897 [2020-01-16 18:15:14,594 INFO L226 Difference]: Without dead ends: 2871 [2020-01-16 18:15:14,594 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 18:15:14,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2871 states. [2020-01-16 18:15:14,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2871 to 1567. [2020-01-16 18:15:14,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:15:14,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7027 transitions. [2020-01-16 18:15:14,658 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7027 transitions. Word has length 28 [2020-01-16 18:15:14,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:15:14,658 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7027 transitions. [2020-01-16 18:15:14,658 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:15:14,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7027 transitions. [2020-01-16 18:15:14,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:15:14,660 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:15:14,660 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 18:15:14,660 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 18:15:14,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:15:14,660 INFO L82 PathProgramCache]: Analyzing trace with hash 133429096, now seen corresponding path program 921 times [2020-01-16 18:15:14,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:15:14,661 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801967655] [2020-01-16 18:15:14,661 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:15:14,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:15:15,127 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 18:15:15,127 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801967655] [2020-01-16 18:15:15,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:15:15,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:15:15,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782109533] [2020-01-16 18:15:15,127 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:15:15,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:15:15,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:15:15,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:15:15,128 INFO L87 Difference]: Start difference. First operand 1567 states and 7027 transitions. Second operand 11 states. [2020-01-16 18:15:15,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:15:15,289 INFO L93 Difference]: Finished difference Result 2882 states and 11456 transitions. [2020-01-16 18:15:15,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:15:15,289 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:15:15,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:15:15,295 INFO L225 Difference]: With dead ends: 2882 [2020-01-16 18:15:15,295 INFO L226 Difference]: Without dead ends: 2867 [2020-01-16 18:15:15,296 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 18:15:15,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2867 states. [2020-01-16 18:15:15,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2867 to 1570. [2020-01-16 18:15:15,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2020-01-16 18:15:15,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 7032 transitions. [2020-01-16 18:15:15,359 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 7032 transitions. Word has length 28 [2020-01-16 18:15:15,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:15:15,359 INFO L478 AbstractCegarLoop]: Abstraction has 1570 states and 7032 transitions. [2020-01-16 18:15:15,359 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:15:15,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 7032 transitions. [2020-01-16 18:15:15,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:15:15,361 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:15:15,361 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 18:15:15,361 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 18:15:15,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:15:15,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1213701660, now seen corresponding path program 922 times [2020-01-16 18:15:15,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:15:15,361 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880468843] [2020-01-16 18:15:15,362 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:15:15,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:15:15,901 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 29 [2020-01-16 18:15:15,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:15:15,908 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880468843] [2020-01-16 18:15:15,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:15:15,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:15:15,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061888914] [2020-01-16 18:15:15,908 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:15:15,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:15:15,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:15:15,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:15:15,909 INFO L87 Difference]: Start difference. First operand 1570 states and 7032 transitions. Second operand 11 states. [2020-01-16 18:15:16,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:15:16,071 INFO L93 Difference]: Finished difference Result 2880 states and 11449 transitions. [2020-01-16 18:15:16,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:15:16,072 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:15:16,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:15:16,078 INFO L225 Difference]: With dead ends: 2880 [2020-01-16 18:15:16,078 INFO L226 Difference]: Without dead ends: 2864 [2020-01-16 18:15:16,079 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 18:15:16,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2864 states. [2020-01-16 18:15:16,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2864 to 1567. [2020-01-16 18:15:16,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-01-16 18:15:16,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 7024 transitions. [2020-01-16 18:15:16,141 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 7024 transitions. Word has length 28 [2020-01-16 18:15:16,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:15:16,141 INFO L478 AbstractCegarLoop]: Abstraction has 1567 states and 7024 transitions. [2020-01-16 18:15:16,141 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:15:16,141 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 7024 transitions. [2020-01-16 18:15:16,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:15:16,143 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:15:16,144 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 18:15:16,144 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 18:15:16,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:15:16,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1643840300, now seen corresponding path program 923 times [2020-01-16 18:15:16,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:15:16,144 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203406751] [2020-01-16 18:15:16,144 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:15:16,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:15:16,627 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 18:15:16,627 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203406751] [2020-01-16 18:15:16,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:15:16,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:15:16,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025893741] [2020-01-16 18:15:16,627 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:15:16,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:15:16,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:15:16,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:15:16,628 INFO L87 Difference]: Start difference. First operand 1567 states and 7024 transitions. Second operand 11 states. [2020-01-16 18:15:16,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:15:16,764 INFO L93 Difference]: Finished difference Result 2893 states and 11473 transitions. [2020-01-16 18:15:16,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:15:16,765 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:15:16,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:15:16,771 INFO L225 Difference]: With dead ends: 2893 [2020-01-16 18:15:16,771 INFO L226 Difference]: Without dead ends: 2873 [2020-01-16 18:15:16,772 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 18:15:16,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2873 states. [2020-01-16 18:15:16,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2873 to 1571. [2020-01-16 18:15:16,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:15:16,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7030 transitions. [2020-01-16 18:15:16,834 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7030 transitions. Word has length 28 [2020-01-16 18:15:16,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:15:16,834 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7030 transitions. [2020-01-16 18:15:16,834 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:15:16,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7030 transitions. [2020-01-16 18:15:16,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:15:16,836 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:15:16,836 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 18:15:16,837 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 18:15:16,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:15:16,837 INFO L82 PathProgramCache]: Analyzing trace with hash -119610072, now seen corresponding path program 924 times [2020-01-16 18:15:16,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:15:16,837 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970991006] [2020-01-16 18:15:16,837 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:15:16,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:15:17,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:15:17,308 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970991006] [2020-01-16 18:15:17,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:15:17,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:15:17,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354363764] [2020-01-16 18:15:17,308 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:15:17,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:15:17,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:15:17,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:15:17,309 INFO L87 Difference]: Start difference. First operand 1571 states and 7030 transitions. Second operand 11 states. [2020-01-16 18:15:17,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:15:17,473 INFO L93 Difference]: Finished difference Result 2886 states and 11456 transitions. [2020-01-16 18:15:17,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:15:17,474 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:15:17,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:15:17,480 INFO L225 Difference]: With dead ends: 2886 [2020-01-16 18:15:17,480 INFO L226 Difference]: Without dead ends: 2865 [2020-01-16 18:15:17,481 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:15:17,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2865 states. [2020-01-16 18:15:17,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2865 to 1563. [2020-01-16 18:15:17,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 18:15:17,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7013 transitions. [2020-01-16 18:15:17,544 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7013 transitions. Word has length 28 [2020-01-16 18:15:17,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:15:17,544 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7013 transitions. [2020-01-16 18:15:17,544 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:15:17,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7013 transitions. [2020-01-16 18:15:17,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:15:17,546 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:15:17,546 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 18:15:17,546 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 18:15:17,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:15:17,546 INFO L82 PathProgramCache]: Analyzing trace with hash 902352962, now seen corresponding path program 925 times [2020-01-16 18:15:17,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:15:17,546 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540826961] [2020-01-16 18:15:17,547 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:15:17,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:15:18,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:15:18,017 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540826961] [2020-01-16 18:15:18,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:15:18,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:15:18,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025005655] [2020-01-16 18:15:18,018 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:15:18,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:15:18,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:15:18,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:15:18,018 INFO L87 Difference]: Start difference. First operand 1563 states and 7013 transitions. Second operand 11 states. [2020-01-16 18:15:18,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:15:18,203 INFO L93 Difference]: Finished difference Result 2884 states and 11462 transitions. [2020-01-16 18:15:18,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:15:18,203 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:15:18,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:15:18,210 INFO L225 Difference]: With dead ends: 2884 [2020-01-16 18:15:18,210 INFO L226 Difference]: Without dead ends: 2869 [2020-01-16 18:15:18,210 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:15:18,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2869 states. [2020-01-16 18:15:18,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2869 to 1571. [2020-01-16 18:15:18,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-01-16 18:15:18,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 7033 transitions. [2020-01-16 18:15:18,274 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 7033 transitions. Word has length 28 [2020-01-16 18:15:18,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:15:18,275 INFO L478 AbstractCegarLoop]: Abstraction has 1571 states and 7033 transitions. [2020-01-16 18:15:18,275 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:15:18,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 7033 transitions. [2020-01-16 18:15:18,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:15:18,277 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:15:18,277 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:15:18,277 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 18:15:18,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:15:18,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1158506840, now seen corresponding path program 926 times [2020-01-16 18:15:18,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:15:18,277 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149563377] [2020-01-16 18:15:18,277 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:15:18,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:15:18,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:15:18,741 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149563377] [2020-01-16 18:15:18,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:15:18,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:15:18,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533627715] [2020-01-16 18:15:18,742 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:15:18,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:15:18,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:15:18,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:15:18,742 INFO L87 Difference]: Start difference. First operand 1571 states and 7033 transitions. Second operand 11 states. [2020-01-16 18:15:18,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:15:18,908 INFO L93 Difference]: Finished difference Result 2887 states and 11463 transitions. [2020-01-16 18:15:18,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:15:18,908 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:15:18,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:15:18,914 INFO L225 Difference]: With dead ends: 2887 [2020-01-16 18:15:18,915 INFO L226 Difference]: Without dead ends: 2864 [2020-01-16 18:15:18,915 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:15:18,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2864 states. [2020-01-16 18:15:18,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2864 to 1566. [2020-01-16 18:15:18,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1566 states. [2020-01-16 18:15:18,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 7021 transitions. [2020-01-16 18:15:18,977 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 7021 transitions. Word has length 28 [2020-01-16 18:15:18,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:15:18,978 INFO L478 AbstractCegarLoop]: Abstraction has 1566 states and 7021 transitions. [2020-01-16 18:15:18,978 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:15:18,978 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 7021 transitions. [2020-01-16 18:15:18,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:15:18,980 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:15:18,980 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 18:15:18,980 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 18:15:18,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:15:18,980 INFO L82 PathProgramCache]: Analyzing trace with hash 2059463174, now seen corresponding path program 927 times [2020-01-16 18:15:18,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:15:18,980 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70469115] [2020-01-16 18:15:18,980 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:15:18,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:15:19,472 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 18:15:19,472 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70469115] [2020-01-16 18:15:19,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:15:19,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:15:19,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727646721] [2020-01-16 18:15:19,473 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:15:19,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:15:19,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:15:19,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:15:19,473 INFO L87 Difference]: Start difference. First operand 1566 states and 7021 transitions. Second operand 11 states. [2020-01-16 18:15:19,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:15:19,636 INFO L93 Difference]: Finished difference Result 2877 states and 11443 transitions. [2020-01-16 18:15:19,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:15:19,637 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:15:19,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:15:19,643 INFO L225 Difference]: With dead ends: 2877 [2020-01-16 18:15:19,644 INFO L226 Difference]: Without dead ends: 2862 [2020-01-16 18:15:19,644 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:15:19,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2862 states. [2020-01-16 18:15:19,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2862 to 1569. [2020-01-16 18:15:19,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:15:19,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7026 transitions. [2020-01-16 18:15:19,708 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7026 transitions. Word has length 28 [2020-01-16 18:15:19,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:15:19,708 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7026 transitions. [2020-01-16 18:15:19,708 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:15:19,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7026 transitions. [2020-01-16 18:15:19,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:15:19,710 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:15:19,710 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 18:15:19,710 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 18:15:19,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:15:19,710 INFO L82 PathProgramCache]: Analyzing trace with hash 712332418, now seen corresponding path program 928 times [2020-01-16 18:15:19,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:15:19,710 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167251919] [2020-01-16 18:15:19,710 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:15:19,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:15:20,181 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 18:15:20,181 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167251919] [2020-01-16 18:15:20,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:15:20,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:15:20,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133868328] [2020-01-16 18:15:20,181 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:15:20,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:15:20,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:15:20,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:15:20,182 INFO L87 Difference]: Start difference. First operand 1569 states and 7026 transitions. Second operand 11 states. [2020-01-16 18:15:20,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:15:20,366 INFO L93 Difference]: Finished difference Result 2875 states and 11436 transitions. [2020-01-16 18:15:20,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:15:20,366 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:15:20,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:15:20,373 INFO L225 Difference]: With dead ends: 2875 [2020-01-16 18:15:20,373 INFO L226 Difference]: Without dead ends: 2859 [2020-01-16 18:15:20,374 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 18:15:20,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2859 states. [2020-01-16 18:15:20,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2859 to 1566. [2020-01-16 18:15:20,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1566 states. [2020-01-16 18:15:20,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 7018 transitions. [2020-01-16 18:15:20,437 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 7018 transitions. Word has length 28 [2020-01-16 18:15:20,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:15:20,437 INFO L478 AbstractCegarLoop]: Abstraction has 1566 states and 7018 transitions. [2020-01-16 18:15:20,437 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:15:20,437 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 7018 transitions. [2020-01-16 18:15:20,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:15:20,439 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:15:20,439 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:15:20,439 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 18:15:20,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:15:20,440 INFO L82 PathProgramCache]: Analyzing trace with hash 30112684, now seen corresponding path program 929 times [2020-01-16 18:15:20,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:15:20,440 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135446807] [2020-01-16 18:15:20,440 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:15:20,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:15:20,895 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 18:15:20,896 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135446807] [2020-01-16 18:15:20,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:15:20,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:15:20,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463399888] [2020-01-16 18:15:20,896 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:15:20,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:15:20,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:15:20,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:15:20,896 INFO L87 Difference]: Start difference. First operand 1566 states and 7018 transitions. Second operand 11 states. [2020-01-16 18:15:21,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:15:21,062 INFO L93 Difference]: Finished difference Result 2883 states and 11452 transitions. [2020-01-16 18:15:21,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:15:21,062 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:15:21,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:15:21,069 INFO L225 Difference]: With dead ends: 2883 [2020-01-16 18:15:21,069 INFO L226 Difference]: Without dead ends: 2865 [2020-01-16 18:15:21,069 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:15:21,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2865 states. [2020-01-16 18:15:21,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2865 to 1569. [2020-01-16 18:15:21,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-01-16 18:15:21,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 7023 transitions. [2020-01-16 18:15:21,132 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 7023 transitions. Word has length 28 [2020-01-16 18:15:21,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:15:21,133 INFO L478 AbstractCegarLoop]: Abstraction has 1569 states and 7023 transitions. [2020-01-16 18:15:21,133 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:15:21,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 7023 transitions. [2020-01-16 18:15:21,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:15:21,135 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:15:21,135 INFO L415 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 18:15:21,135 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 18:15:21,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:15:21,135 INFO L82 PathProgramCache]: Analyzing trace with hash 205986152, now seen corresponding path program 930 times [2020-01-16 18:15:21,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:15:21,135 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591132862] [2020-01-16 18:15:21,135 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:15:21,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:15:21,607 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 18:15:21,608 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591132862] [2020-01-16 18:15:21,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:15:21,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:15:21,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806984478] [2020-01-16 18:15:21,608 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:15:21,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:15:21,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:15:21,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:15:21,608 INFO L87 Difference]: Start difference. First operand 1569 states and 7023 transitions. Second operand 11 states. [2020-01-16 18:15:21,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:15:21,781 INFO L93 Difference]: Finished difference Result 2878 states and 11439 transitions. [2020-01-16 18:15:21,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:15:21,782 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:15:21,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:15:21,788 INFO L225 Difference]: With dead ends: 2878 [2020-01-16 18:15:21,789 INFO L226 Difference]: Without dead ends: 2859 [2020-01-16 18:15:21,789 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 18:15:21,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2859 states. [2020-01-16 18:15:21,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2859 to 1563. [2020-01-16 18:15:21,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1563 states. [2020-01-16 18:15:21,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 7010 transitions. [2020-01-16 18:15:21,851 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 7010 transitions. Word has length 28 [2020-01-16 18:15:21,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:15:21,851 INFO L478 AbstractCegarLoop]: Abstraction has 1563 states and 7010 transitions. [2020-01-16 18:15:21,851 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:15:21,851 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 7010 transitions. [2020-01-16 18:15:21,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:15:21,853 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:15:21,853 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 18:15:21,853 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 18:15:21,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:15:21,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1969865026, now seen corresponding path program 931 times [2020-01-16 18:15:21,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:15:21,854 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560772869] [2020-01-16 18:15:21,854 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:15:21,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:15:22,349 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 18:15:22,350 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560772869] [2020-01-16 18:15:22,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:15:22,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:15:22,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651225960] [2020-01-16 18:15:22,350 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:15:22,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:15:22,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:15:22,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:15:22,350 INFO L87 Difference]: Start difference. First operand 1563 states and 7010 transitions. Second operand 11 states. [2020-01-16 18:15:22,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:15:22,481 INFO L93 Difference]: Finished difference Result 2912 states and 11517 transitions. [2020-01-16 18:15:22,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:15:22,481 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:15:22,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:15:22,488 INFO L225 Difference]: With dead ends: 2912 [2020-01-16 18:15:22,488 INFO L226 Difference]: Without dead ends: 2892 [2020-01-16 18:15:22,488 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 18:15:22,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2892 states. [2020-01-16 18:15:22,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2892 to 1578. [2020-01-16 18:15:22,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-01-16 18:15:22,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 7043 transitions. [2020-01-16 18:15:22,552 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 7043 transitions. Word has length 28 [2020-01-16 18:15:22,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:15:22,552 INFO L478 AbstractCegarLoop]: Abstraction has 1578 states and 7043 transitions. [2020-01-16 18:15:22,552 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:15:22,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 7043 transitions. [2020-01-16 18:15:22,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:15:22,554 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:15:22,554 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 18:15:22,554 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 18:15:22,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:15:22,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1580399772, now seen corresponding path program 932 times [2020-01-16 18:15:22,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:15:22,555 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317367933] [2020-01-16 18:15:22,555 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:15:22,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:15:23,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:15:23,040 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317367933] [2020-01-16 18:15:23,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:15:23,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:15:23,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237777234] [2020-01-16 18:15:23,041 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:15:23,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:15:23,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:15:23,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:15:23,041 INFO L87 Difference]: Start difference. First operand 1578 states and 7043 transitions. Second operand 11 states. [2020-01-16 18:15:23,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:15:23,201 INFO L93 Difference]: Finished difference Result 2910 states and 11505 transitions. [2020-01-16 18:15:23,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:15:23,201 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:15:23,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:15:23,208 INFO L225 Difference]: With dead ends: 2910 [2020-01-16 18:15:23,208 INFO L226 Difference]: Without dead ends: 2882 [2020-01-16 18:15:23,208 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 18:15:23,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2882 states. [2020-01-16 18:15:23,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2882 to 1568. [2020-01-16 18:15:23,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 18:15:23,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7021 transitions. [2020-01-16 18:15:23,272 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7021 transitions. Word has length 28 [2020-01-16 18:15:23,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:15:23,272 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7021 transitions. [2020-01-16 18:15:23,272 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:15:23,272 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7021 transitions. [2020-01-16 18:15:23,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:15:23,274 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:15:23,274 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 18:15:23,275 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 18:15:23,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:15:23,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1167992058, now seen corresponding path program 933 times [2020-01-16 18:15:23,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:15:23,275 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657157896] [2020-01-16 18:15:23,275 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:15:23,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:15:23,761 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 29 [2020-01-16 18:15:23,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 18:15:23,768 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657157896] [2020-01-16 18:15:23,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:15:23,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:15:23,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895673168] [2020-01-16 18:15:23,768 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:15:23,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:15:23,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:15:23,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:15:23,769 INFO L87 Difference]: Start difference. First operand 1568 states and 7021 transitions. Second operand 11 states. [2020-01-16 18:15:23,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:15:23,898 INFO L93 Difference]: Finished difference Result 2901 states and 11486 transitions. [2020-01-16 18:15:23,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:15:23,899 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:15:23,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:15:23,905 INFO L225 Difference]: With dead ends: 2901 [2020-01-16 18:15:23,905 INFO L226 Difference]: Without dead ends: 2881 [2020-01-16 18:15:23,905 INFO L633 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-01-16 18:15:23,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2881 states. [2020-01-16 18:15:23,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2881 to 1572. [2020-01-16 18:15:23,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-01-16 18:15:23,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 7027 transitions. [2020-01-16 18:15:23,969 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 7027 transitions. Word has length 28 [2020-01-16 18:15:23,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:15:23,969 INFO L478 AbstractCegarLoop]: Abstraction has 1572 states and 7027 transitions. [2020-01-16 18:15:23,969 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:15:23,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 7027 transitions. [2020-01-16 18:15:23,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:15:23,971 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:15:23,972 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 18:15:23,972 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 18:15:23,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:15:23,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1363524866, now seen corresponding path program 934 times [2020-01-16 18:15:23,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:15:23,972 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846528832] [2020-01-16 18:15:23,972 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:15:23,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 18:15:24,426 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 18:15:24,426 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846528832] [2020-01-16 18:15:24,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 18:15:24,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-01-16 18:15:24,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400523126] [2020-01-16 18:15:24,427 INFO L458 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-01-16 18:15:24,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-01-16 18:15:24,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-01-16 18:15:24,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-01-16 18:15:24,427 INFO L87 Difference]: Start difference. First operand 1572 states and 7027 transitions. Second operand 11 states. [2020-01-16 18:15:24,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-01-16 18:15:24,611 INFO L93 Difference]: Finished difference Result 2894 states and 11469 transitions. [2020-01-16 18:15:24,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-01-16 18:15:24,611 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-01-16 18:15:24,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-01-16 18:15:24,618 INFO L225 Difference]: With dead ends: 2894 [2020-01-16 18:15:24,618 INFO L226 Difference]: Without dead ends: 2877 [2020-01-16 18:15:24,619 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 18:15:24,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2877 states. [2020-01-16 18:15:24,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2877 to 1568. [2020-01-16 18:15:24,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-01-16 18:15:24,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 7017 transitions. [2020-01-16 18:15:24,682 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 7017 transitions. Word has length 28 [2020-01-16 18:15:24,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-01-16 18:15:24,682 INFO L478 AbstractCegarLoop]: Abstraction has 1568 states and 7017 transitions. [2020-01-16 18:15:24,682 INFO L479 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-01-16 18:15:24,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 7017 transitions. [2020-01-16 18:15:24,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-01-16 18:15:24,684 INFO L407 BasicCegarLoop]: Found error trace [2020-01-16 18:15:24,684 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 18:15:24,684 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 18:15:24,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 18:15:24,684 INFO L82 PathProgramCache]: Analyzing trace with hash -412786456, now seen corresponding path program 935 times [2020-01-16 18:15:24,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 18:15:24,685 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713922881] [2020-01-16 18:15:24,685 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 18:15:24,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2020-01-16 18:15:24,756 WARN L209 SmtUtils]: Removed 8 from assertion stack [2020-01-16 18:15:24,757 WARN L543 AbstractCegarLoop]: Verification canceled [2020-01-16 18:15:24,761 WARN L227 ceAbstractionStarter]: Timeout [2020-01-16 18:15:24,761 INFO L202 PluginConnector]: Adding new model example_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.01 06:15:24 BasicIcfg [2020-01-16 18:15:24,761 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-01-16 18:15:24,762 INFO L168 Benchmark]: Toolchain (without parser) took 771547.30 ms. Allocated memory was 138.9 MB in the beginning and 1.4 GB in the end (delta: 1.3 GB). Free memory was 119.6 MB in the beginning and 902.6 MB in the end (delta: -783.0 MB). Peak memory consumption was 503.6 MB. Max. memory is 7.1 GB. [2020-01-16 18:15:24,763 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.18 ms. Allocated memory is still 138.9 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-01-16 18:15:24,763 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.88 ms. Allocated memory is still 138.9 MB. Free memory was 119.4 MB in the beginning and 117.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. [2020-01-16 18:15:24,763 INFO L168 Benchmark]: Boogie Preprocessor took 25.23 ms. Allocated memory is still 138.9 MB. Free memory was 117.8 MB in the beginning and 116.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-01-16 18:15:24,763 INFO L168 Benchmark]: RCFGBuilder took 399.09 ms. Allocated memory is still 138.9 MB. Free memory was 116.5 MB in the beginning and 102.8 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2020-01-16 18:15:24,764 INFO L168 Benchmark]: TraceAbstraction took 771079.42 ms. Allocated memory was 138.9 MB in the beginning and 1.4 GB in the end (delta: 1.3 GB). Free memory was 102.4 MB in the beginning and 902.6 MB in the end (delta: -800.2 MB). Peak memory consumption was 486.4 MB. Max. memory is 7.1 GB. [2020-01-16 18:15:24,765 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 0.18 ms. Allocated memory is still 138.9 MB. Free memory was 120.8 MB in the beginning and 120.6 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 37.88 ms. Allocated memory is still 138.9 MB. Free memory was 119.4 MB in the beginning and 117.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.23 ms. Allocated memory is still 138.9 MB. Free memory was 117.8 MB in the beginning and 116.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 399.09 ms. Allocated memory is still 138.9 MB. Free memory was 116.5 MB in the beginning and 102.8 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 771079.42 ms. Allocated memory was 138.9 MB in the beginning and 1.4 GB in the end (delta: 1.3 GB). Free memory was 102.4 MB in the beginning and 902.6 MB in the end (delta: -800.2 MB). Peak memory consumption was 486.4 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 19 for 11ms.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 49 locations, 1 error locations. Started 1 CEGAR loops. Result: TIMEOUT, OverallTime: 770.8s, OverallIterations: 943, TraceHistogramMax: 1, AutomataDifference: 192.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.8s, HoareTripleCheckerStatistics: 115199 SDtfs, 168782 SDslu, 305653 SDs, 0 SdLazy, 83171 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 81.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10298 GetRequests, 950 SyntacticMatches, 0 SemanticMatches, 9348 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6538 ImplicationChecksByTransitivity, 542.3s 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: 70.0s AutomataMinimizationTime, 942 MinimizatonAttempts, 1270592 StatesRemovedByMinimization, 934 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 491.9s InterpolantComputationTime, 26376 NumberOfCodeBlocks, 26376 NumberOfCodeBlocksAsserted, 942 NumberOfCheckSat, 25434 ConstructedInterpolants, 0 QuantifiedInterpolants, 22581288 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 942 InterpolantComputations, 942 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